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Journal articles on the topic 'Composite adsorbent'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Putri, Silvia Devi Eka, Sri Mulijani, and Komar Sutriah. "Facile Synthesis of Composite Chitosan and Durio zibethinus Seed and Its Applications as Adsorbent of Metal Ion Ni(II)." ALCHEMY Jurnal Penelitian Kimia 19, no. 2 (2023): 197. http://dx.doi.org/10.20961/alchemy.19.2.65948.197-209.

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Nickel is one of the most dangerous heavy metals that impact water ecosystems and human health. In the study, natural and harmless composite materials such as biochar and chitosan were modified to build adsorbent composites and form optimal conditions for the adsorption of nickel heavy metal ions from contaminated wastewater. Biochar was prepared from <em>Durio zibethinus</em> seeds by hydrothermal method to form nanopowder. It was treated with acid, while chitosan was designed as nanopowder by hydrothermal method, also without acid treatment. Composite adsorbents were prepared by

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2

Belyanovskaya, Elena A., Grigoriy N. Pustovoy, Kostyntyn M. Sukhyy, et al. "Adsorptive Solar Refrigerators Based on Composite Adsorbents ’Silica Gel – Sodium Sulphate’." Civil and Environmental Engineering Reports 29, no. 3 (2019): 200–208. http://dx.doi.org/10.2478/ceer-2019-0035.

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Abstract The operation processes of adsorptive solar refrigerators based on composite adsorbents ‘silica gel - sodium sulphate’ were studied. The correlation between the adsorbent composition and the coefficient of the energy performance of the device was stated. As a consequence of the decreasing of adsorbent mass, the coefficient of performance is increased when sodium sulphate content in the composite increased. Effect of the regeneration process parameters on the composite on the coefficient of performance of the adsorptive refrigenerator was stated. The growth of the coefficient of perfor

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3

Nitayaphat, Walaikorn, and Thanut Jintakosol. "Removal of Silver (I) from Aqueous Solutions by Chitosan/Carbon Nanotube Nanocomposite Beads." Advanced Materials Research 893 (February 2014): 166–69. http://dx.doi.org/10.4028/www.scientific.net/amr.893.166.

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Chitosan/CNT nanocomposites were prepared by blending chitosan with carbon nanotubes (CNTs) and forming composite beads. The composites were used as Ag+adsorbents. Adsorption equilibrium experiments were carried out as a function of contact time, CNTs concentration, pH value, and adsorbent dosage level. The equilibrium time of Ag+adsorption was found to be 160 min. Composite adsorbent had the highest adsorption efficiency when the weight of CNTs was 0.01 wt%. The maximum Ag+removal took place at the initial pH value of 3. The optimum adsorbent dosage for Ag+removal was 5 g. Under above optimal

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4

Doušová, Barbora, Eva Bedrnová, Kateřina Maxová, et al. "Kaolin–Fly Ash Composite for Pb2+ and AsO43− Adsorption from Aqueous System." Applied Sciences 14, no. 12 (2024): 5358. http://dx.doi.org/10.3390/app14125358.

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The expected benefit of composite adsorbents generally consists in their growing applicability, thanks to the combination of the adsorption properties of individual components. Composite adsorbents were prepared as mixtures of kaolin from a Czech deposit (kaolin Sedlec, SK) and two fly ashes (FAs) from a fluidised bed boiler in Czech operations differing in fuel type. The mixtures of SK with FA in a ratio of 50:50% wt. were prepared at 20 °C, 65 °C, and 110 °C in an autoclave. The source materials and composite adsorbents were tested for the adsorption of lead as Pb2+, and arsenic as AsO43− fr

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MOHAMAD, NORHABIBAH, NOORDINI M. SALLEH, and HABIBUN NABI MUHAMMAD EKRAMUL MAHMUD. "Investigation of Polypyrrole and Polypyrrolepolyethyleneimine as Adsorbents for Methyl Orange Dye Adsorption." Journal of Polymer Materials 40, no. 3-4 (2024): 165–89. http://dx.doi.org/10.32381/jpm.2023.40.3-4.4.

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The present study has explored the adsorption properties of polypyrrole-based adsorbents (polypyrrole and polypyrrole-polyethyleneimine composite) as novel conducting polymers in adsorbing methyl orange (MO) (an anionic dye) effectively from aqueous solution. The adsorption characteristics of the prepared polymer-based adsorbents were characterized by BET, FTIR, FESEM, and XRD methods. The effectiveness of PPy-based adsorbents for MO dye adsorption was examined using the batch adsorption method. Different parameters were changed during the adsorption process, including contact time, solution p

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Ehsan, Asma, Haq Nawaz Bhatti, Munawar Iqbal, and Saima Noreen. "Native, acidic pre-treated and composite clay efficiency for the adsorption of dicationic dye in aqueous medium." Water Science and Technology 75, no. 4 (2016): 753–64. http://dx.doi.org/10.2166/wst.2016.435.

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Environmental applications of composites have attracted the interests of researchers due to their excellent adsorption efficiency for pollutants. Native, HCl pre-treated clay and MnFe2O4/clay composite were investigated as an adsorbent for removal of methyl green from aqueous solution. The adsorption behaviors of dye onto native, HCl pre-treated and composite clays were studied as a function of contact time, adsorbent dose, pH, initial dye concentration and temperature. Maximum dye adsorption of 44 mg/g was achieved at pH of 8, contact time 40 min, adsorbent dose 0.20 g/L and initial dye conce

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Laksmono, Joddy Arya, Mahmud Sudibandriyo, Asep Handaya Saputra, and Agus Haryono. "Structured Polyvinyl Alcohol/Zeolite/Carbon Composites Prepared Using Supercritical Fluid Extraction Techniques as Adsorbent for Bioethanol Dehydration." International Journal of Chemical Engineering 2019 (January 16, 2019): 1–11. http://dx.doi.org/10.1155/2019/6036479.

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Introduction. Adsorption is a purification process with a more efficient energy level than others. Adsorption performance is strongly influenced by the ability of the adsorbent to be used; therefore, the modification of the adsorbent becomes a very important key for the purification process that occurs. Methods. In this study, the preparation of composite adsorbents was carried out by combining polyvinyl alcohol (PVA), zeolite (Zeo), and activated carbon (AC) as precursors. The crosslinking process was fulfilled by adding glutaraldehyde to the precursor mixtures followed by a supercritical flu

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8

Kusumaningrum, Irma Kartika, Mira Nur Fadilah, Anugrah Ricky Wijaya, Habiddin Habiddin, and Meliza Armaya. "Synthesis of Nanomagnetite/Crosslinked Carboxymethyl kappa Carrageenan Nickel Imprinted Composite." Malaysian Journal of Fundamental and Applied Sciences 19, no. 4 (2023): 707–21. http://dx.doi.org/10.11113/mjfas.v19n4.3038.

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Nickel(II) ions are carcinogenic water pollutants. To increase the accuracy of instrumental analysis of Ni(II) content, several analytical preparation methods have been developed, including solid phase adsorption extraction. The development of magnetic solid phase extraction adsorbents for metal ions is required, to support the application of magnetic solid phase adsorption as a method of separating metal ions in aqueous samples. This research describes the synthesis of Magnetic Solid Phase Extraction adsorbents as Ni(II) ion adsorbents, nano magnetite/carboxymethyl kappa-carrageenan (CMKC) cr

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Njoku, Chukwunonso O., and B. R. Etuk. "Optimization and Modeling of Cyanide Removal from Cassava Waste Water Using Calcined and Activated Adsorbent Mixtures of Oyster Shell and Periwinkle Shell Ash." Journal of Engineering Research and Reports 24, no. 8 (2023): 20–35. http://dx.doi.org/10.9734/jerr/2023/v24i8835.

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Cyanide, a toxic compound found in cassava wastewater which on frequent basis is discharged to the environment poses danger to the ecosystem; this research work aims to curb this menace. Temperature, pH, dosage, contact time, adsorbent mixture ratio and initial concentration were optimized using CCD on periwinkle-oyster shells composite mixtures for activated and also, calcined adsorbents on the cyanide adsorption from cassava wastewater. Three RSM models (linear, 2FI and quadratic) were applied to study, optimize and predict this adsorption process. ANOVA showed that quadratic model best pred

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Haryono, Atiek Rostika Noviyanti, and Engela Evy Ernawati. "Sintesis, Karakterisasi, dan Uji Adsorpsi Komposit Silika/Karbon dari Limbah Sekam Padi sebagai Adsorben Tembaga (II)." Jurnal Teknologi Lingkungan 24, no. 1 (2023): 058–66. http://dx.doi.org/10.55981/jtl.2023.241.

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Copper ion as one of the pollutants in industrial wastewater can be treated by the adsorption method. One type of adsorbent can be prepared from rice husk. Rice husk as agricultural waste contains carbon and silica which can act as metal adsorbents. The purpose of this study was to synthesize and characterize silica/carbon composites, as well as test their adsorption as adsorbent on copper (II) ion adsorption by determining the optimum composition of silica/carbon, adsorption capacity, and model of isotherm adsorption. The research method consisted of gasification of rice husks, extraction of

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Mayangsari, Novi Eka, Tarikh Azis Ramadani, and Ulvi Pri Astuti. "Synthesis of a Cellulose/PVA Adsorbent Composite from Pineapple Leaves Waste (Ananas Comosus) for the Degradation of Methylene Blue in Aqueous Solution." IJCA (Indonesian Journal of Chemical Analysis) 8, no. 1 (2025): 62–73. https://doi.org/10.20885/ijca.vol8.iss1.art6.

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Methylene blue is disastrous for the environment due to their high toxicity. This needs to be mitigated to ensure that the effects can be reduced. Pineapple peel waste (Ananas comosus) can be valorized as cellulose adsorbent and cellulose/PVA adsorbent is a potential solution to minimize the impact of these contaminants. The objective of this research is to investigate the performance of the cellulose/PVA composite in the methylene blue adsorption process and to evaluate its performance with a cellulose adsorbent. The adsorption process results showed that the percentage of MB removal reached

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Mahawong, Sirinad, Piyatida Thaveemas, Parichart Onsri, et al. "Single-Step Upcycling of Sugarcane Bagasse and Iron Scrap into Magnetic Carbon for High-Performance Adsorbents." Molecules 30, no. 9 (2025): 2040. https://doi.org/10.3390/molecules30092040.

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The sugar industry produces significant quantities of waste biomass, while other industrial sectors generate iron scrap as waste. This study seeks to make use of these waste products using an in situ approach that integrates carbonization, activation, and magnetization to convert sugarcane waste and iron scrap into a magnetic carbon composite adsorbent. The porosity of the activated carbon was enhanced by the activating agent potassium hydroxide (KOH) and further improved by the addition of iron scrap, which also imparted magnetic properties to the composite. The developed porosity of the comp

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13

Manalu, Rotua Natalia, Zaqiya Artha Zahara, and Risfidian Mohadi. "Ni-Cr Layered Double Hydroxide/Microcrystalline Cellulose Composite as Adsorbents for Malachite Green Dye." Indonesian Journal of Material Research 1, no. 2 (2023): 51–60. http://dx.doi.org/10.26554/ijmr.2023128.

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Malachite green dye in industrial wastewater can be removed by the adsorption method. The adsorbents used in the adsorption method were Ni-Cr LDH, microcrystalline cellulose, and Ni Cr LDH/microcrystalline cellulose composite. Regeneration process of malachite green dye with the Ni-Cr/microcrystalline cellulose adsorbent resulted in the adsorbent having the highest percent adsorbed when compared to Ni-Cr LDH and microcrystalline cellulose adsorbents. This is proof that Ni-Cr/microcrystalline cellulose LDH composite adsorbent can be used repeatedly as much as five cycles. Ni-Cr LDH material and

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14

Nikoshvili, Linda Z., Boris B. Tikhonov, Pavel E. Ivanov, Polina Y. Stadolnikova, Mikhail G. Sulman, and Valentina G. Matveeva. "Recent Progress in Chitosan-Containing Composite Materials for Sustainable Approaches to Adsorption and Catalysis." Catalysts 13, no. 2 (2023): 367. http://dx.doi.org/10.3390/catal13020367.

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In recent years, composite materials including organic–inorganic systems have drawn special attention due to their enhanced properties such as adsorbents and heterogeneous catalysts. At the same time, large-scale production of environmentally benign functionalized biopolymers, such as chitosan (CS), allows for constantly developing new materials, since CS reveals remarkable properties as a stabilizing agent for metal-containing compounds and enzymes and as an adsorbent of organic molecules. This review is focused on CS-based materials and on the composite systems including CS–oxide and CS–meta

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15

Hermanto, Dhony, Putri Jauhar Prihatini, Niza Yusnita Apriani, et al. "FACILE SYNTHESIS OF ACTIVATED CARBON/ALGINATE/CHITOSAN COMPOSITE BEADS AS RHEMAZOLE BRILLIANT BLUE R ADSORBENT." Indonesian Physical Review 7, no. 3 (2024): 480–95. http://dx.doi.org/10.29303/ipr.v7i3.343.

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Developing composite beads composed of chitosan, alginate, and activated carbon for dye removal is essential due to their improved adsorption capabilities and environmental benefits. By utilizing natural resources efficiently for an effective dye removal process, this study developed an activated carbon/alginate/chitosan composite bead as Rhemazole Brilliant Blue R (RBBR) adsorbent. The surface shape of composites exhibits more protrusions, grooves, and asymmetric pores than activated carbon, which could improve dye adsorption capability. FTIR analysis verified that functional groups such as O

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16

Elsheniti, Mahmoud Badawy, Mohamed Shaaban Eissa, Hany Al-Ansary, Jamel Orfi, Abdelrahman El-Leathy, and Osama Elsamni. "Using a Combination of Activated Carbon and Graphene Nanoparticles in a Consolidated Form for Adsorption Ice Maker: A System-Level Modeling." Applied Sciences 12, no. 15 (2022): 7602. http://dx.doi.org/10.3390/app12157602.

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Adsorption refrigeration systems are one of the emerging decarbonization technologies that can use eco-friendly heating sources and working fluids. However, the highly porous adsorbent materials used in these systems have a low thermal conductivity that hinders their system performance enhancement. Graphene nanoplatelets are proposed in the literature to improve the conductive heat transfer through the adsorbent field and the resulting composite adsorbents were favorably testified at the material level. In this study, the impact of employing a composite adsorbent that comprises of 50% activate

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17

Wang, Cuiru, Juanjuan Yin, Ran Wang, et al. "Facile Preparation of Self-Assembled Polydopamine-Modified Electrospun Fibers for Highly Effective Removal of Organic Dyes." Nanomaterials 9, no. 1 (2019): 116. http://dx.doi.org/10.3390/nano9010116.

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Polydopamine (PDA) nanoparticles can be used as an adsorbent with excellent adsorption capacity. However, nanosized adsorbents are prone to aggregation and thus are severely limited in the field of adsorption. In order to solve this problem, we utilized polydopamine in-situ oxidation self-polymerization on the surface of polycaprolactone (PCL)/polyethylene oxide (PEO) electrospun fiber after solvent vapor annealing (SVA) treatment, and successfully designed and prepared a PCL/PEO@PDA composite membrane. The SVA treatment regulated the microscopic morphology of smooth PCL/PEO electrospun fibers

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18

Tran, Chinh Van, Phuong Thi Hoai Nguyen, Dinh Duc Nguyen, Hanh T. T. Pham, Dinh Trung Do, and Duong Duc La. "Facile Fabrication of Fe2O3/TiO2 Composite from Titanium Slag as Adsorbent for As(V) Removal from Aqueous Media." Sustainability 15, no. 9 (2023): 7253. http://dx.doi.org/10.3390/su15097253.

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Mixed metal oxide composites have been widely used as adsorbents for the removal of heavy metal ions from wastewater. In this work, Fe2O3/TiO2 composite was sustainably prepared via the treatment of titanium slag with a low-concentration sulfuric acid solution (20%) and used for the removal of As(V) from aqueous solutions. The resulting products were characterized by X-ray diffraction (XRD), N2 adsorption−desorption, Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX). The batch adsorption was employed to investigat

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Dat Mai, Ngoc Xuan, Tan Le-Hoang Doan, Le Nguyen Bao Thu, and Bach Thang Phan. "EvaluationofremovalefficiencyofFe(III)andAl(III)ionsinacidsulfate waterusing agarose-basedmagnesiumoxidecomposite." Ministry of Science and Technology, Vietnam 63, no. 3 (2021): 30–34. http://dx.doi.org/10.31276/vjste.63(3).30-34.

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Agarose/MgO composite adsorbents were developed through interspersing MgO nanoparticles with agarose to create an absorbent. The elimination capacity of the composite towards iron (Fe), aluminium (Al), and arsenate (As) in acid sulfate water was evaluated by means of batch method at room temperature. The constituents of the composite were characterized by thermal gravimetric analysis (TGA). The removal efficiency was determined through inductively coupled plasma (ICP) mass spectrometry. The composite adsorbent exhibited an excellent adsorption capacity towards three types of ions and heavy met

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Wu, Wenjuan, Penghui Li, Mingkang Wang, et al. "Comprehensive Evaluation of Polyaniline-Doped Lignosulfonate in Adsorbing Dye and Heavy Metal Ions." International Journal of Molecular Sciences 25, no. 1 (2023): 133. http://dx.doi.org/10.3390/ijms25010133.

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Lignosulfonate/polyaniline (LS/PANI) nanocomposite adsorbent materials were prepared by the chemical polymerization of lignosulfonate with an aniline monomer as a dopant and structure-directing agent, and the adsorption behavior of dyes as well as heavy metal ions was investigated. LS/PANI composites were used as dye adsorbents for the removal of different cationic dyes (malachite green, methylene blue, and crystal violet). The adsorption behavior of LS/PANI composites as dye adsorbents for malachite green was investigated by examining the effects of the adsorbent dosage, solution pH, initial

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Zhang, Wang, Li, Liu, An, and Zheng. "Preferable Adsorption of Nitrogen and Phosphorus from Agricultural Wastewater Using Thermally Modified Zeolite–Diatomite Composite Adsorbent." Water 11, no. 10 (2019): 2053. http://dx.doi.org/10.3390/w11102053.

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Nitrogen and phosphorus adsorbents are widely used to mitigate agricultural non-point source pollution. However, research on adsorbents mainly involves studying chemical adsorption properties, and analyzes of the effects of adsorbent on pollutant removal has not considered the surface morphology of the adsorbent or the surface distribution of pollutants. In this study, we focus on the surface morphology of the adsorbent and the surface distribution of contaminants while examining chemical adsorption properties. The crystal composition of the adsorbent was evaluated by x-ray diffraction (XRD) c

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Mungondori, Henry H., Sandile Mtetwa, Lilian Tichagwa, David M. Katwire, and Pardon Nyamukamba. "Synthesis and application of a ternary composite of clay, saw-dust and peanut husks in heavy metal adsorption." Water Science and Technology 75, no. 10 (2017): 2443–53. http://dx.doi.org/10.2166/wst.2017.123.

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The adsorption of a multi-component system of ferrous, chromium, copper, nickel and lead on single, binary and ternary composites was studied. The aim of the study was to investigate whether a ternary composite of clay, peanut husks (PH) and saw-dust (SD) exhibited a higher adsorption capacity than that of a binary system of clay and SD as well as a single component adsorbent of PH alone. The materials were used in their raw state without any chemical modifications. This was done to retain the cost effective aspect of the naturally occurring adsorbents. The adsorption capacities of the ternary

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Bijang, Catherina M., M. F. J. D. P. Tanasale, Adhi G. Kelrey, Inda Ulfa Mansur, and Thamrin Azis. "Preparation of Natural Ouw Clay-Chitosan Composite and Its Application as Lead and Cadmium Metal Adsorbent." Indo. J. Chem. Res. 9, no. 1 (2021): 15–20. http://dx.doi.org/10.30598//ijcr.2021.9-bij.

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This study aims to obtain the optimum ratio of Ouw Natural Clay (LAO):Chitosan in the manufacture of chitosan-LAO composites. The composite will be used as an adsorbent for heavy metals Lead (Pb) and Cadmium (Cd). LAO-Chitosan composites were made with the ratio of LAO:Chitosan = 1.25:1, 2.5:1, 5:1. XRD and SEM were carried out for each composite. The performance as a Cd metal adsorbent was determined by calculating the adsorption capacity. Composites with a ratio of 1.25:1 have the best adsorption capacity. The performance as adsorbent for Cd metal was determined by calculating the absorbed C

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Bijang, Catherina M., M. F. J. D. P. Tanasale, Adhi G. Kelrey, Inda Ulfa Mansur, and Thamrin Azis. "Preparation of Natural Ouw Clay-Chitosan Composite and Its Application as Lead and Cadmium Metal Adsorbent." Indonesian Journal of Chemical Research 9, no. 1 (2021): 15–20. http://dx.doi.org/10.30598/ijcr.2021.9-bij.

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This study aims to obtain the optimum ratio of Ouw Natural Clay (LAO):Chitosan in the manufacture of chitosan-LAO composites. The composite will be used as an adsorbent for heavy metals Lead (Pb) and Cadmium (Cd). LAO-Chitosan composites were made with the ratio of LAO:Chitosan = 1.25:1, 2.5:1, 5:1. XRD and SEM were carried out for each composite. The performance as a Cd metal adsorbent was determined by calculating the adsorption capacity. Composites with a ratio of 1.25:1 have the best adsorption capacity. The performance as adsorbent for Cd metal was determined by calculating the absorbed C

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Chen, Yu, Yanli Ma, Weipeng Lu та ін. "Environmentally Friendly Gelatin/β-Cyclodextrin Composite Fiber Adsorbents for the Efficient Removal of Dyes from Wastewater". Molecules 23, № 10 (2018): 2473. http://dx.doi.org/10.3390/molecules23102473.

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In this paper, environmentally friendly gelatin/β-cyclodextrin (β-CD) composite fiber adsorbents prepared by electrospinning were used for the removal of dyes from wastewater. Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and a universal materials tester were employed to characterize the internal structures, surface morphologies and mechanical strength of the composite fiber adsorbents. Additionally, the fiber was evaluated as an adsorbent for the removal of methylene blue (MB) from aqueous solution. The effects of the raw material ratio, pH, temperature, c

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Bhagat, R. M., and S. R. Khandeshwar. "Removal of Nickel from Industrial Wastewater by an Agro-based Composite Adsorbent." Nature Environment and Pollution Technology 23, no. 1 (2024): 505–15. http://dx.doi.org/10.46488/nept.2024.v23i01.047.

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For many years, especially in emerging nations like India, the environment has been threatened by the increased output of industrial wastes and heavy metal toxicity. The usage of inexpensive adsorbents has recently attracted a lot of attention in studies on the removal of heavy metals like nickel from industrial wastewater. The use of agro-based adsorbent is an alternative to conventionally used activated charcoal. In this research, adsorption experiments were carried out using agro-based adsorbent prepared from rice husk, wheat husk, and soybean husk to reduce nickel from industrial wastewate

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Pachiyappan, Jayakaran, Balakrishna Pillai Sankari Naveen Prasad, and Sivamani Selvaraju. "ZnO Impregnated Graphene Silica Composite to Enhance Cr(VI) Adsorption: Batch Studies." IOP Conference Series: Earth and Environmental Science 1401, no. 1 (2024): 012002. http://dx.doi.org/10.1088/1755-1315/1401/1/012002.

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Abstract Hexavalent chromium [Cr(VI)] is a profoundly poisonous heavy metal due to its significant mobility across cell membranes as HCrO4 − and CrO4 2- ions. There is a limited amount of research on the effectiveness of metal oxide impregnated graphene silica composite (GSC) as adsorbents for treating [Cr(VI)]. However, the existing studies indicate that these composites are very efficient. The project involved synthesizing a new type of adsorbent by impregnating zinc oxide (ZnO) particles onto a composite material of graphene and silica. This was achieved using the co-precipitation method. T

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Pasenko, Olexander, Liliya Frolova, and Ihnat Shunkin. "Characteristics of diatomite-alginate-Fe3O4 composite as a phosphate adsorbent." Bulletin of the National Technical University «KhPI» Series: New solutions in modern technologies, no. 3(9) (October 18, 2021): 61–65. http://dx.doi.org/10.20998/2413-4295.2021.03.09.

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Technological approaches to the use of diatomaceous earth as a raw material for the creation of composite adsorbents for wastewater treatment from phosphate ions are analysed. It is shown that the developed surface of diatomite can be used to create a granular adsorbent, and iron (III) oxides (magnetite, goethite, lepidocrocite, ferrihydrite, hematite and goethite) are environmentally safe, cheap, economically feasible modifiers. Emphasis is placed on the possibility of obtaining magnetic granules due to the formation of magnetite. The use of the deposition method for the formation of the appl

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El-Aassar, Mohamed R., Tamer M. Tamer, Mohamed Y. El-Sayed, et al. "Development of Azo Dye Immobilized Poly (Glycidyl Methacrylate-Co-Methyl Methacrylate) Polymers Composites as Novel Adsorbents for Water Treatment Applications: Methylene Blue-Polymers Composites." Polymers 14, no. 21 (2022): 4672. http://dx.doi.org/10.3390/polym14214672.

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Methylene blue azo dye (MB) immobilized onto Poly (glycidyl methacrylate-Co-methyl methacrylate), (PGMA-co-PMMA), and sulphonated Poly (glycidyl methacrylate-Co-methyl methacrylate), (SPGMA-co-PMMA), polymers composites have been developed as novel adsorbents for water treatment applications. The effect of copolymer composition and sulphonation on the MB content has been studied. Maximum MB content was correlated to the Polyglycidyl methacrylate content for both native and sulphonated copolymers. Furthermore, the effect of the adsorption conditions on the MB content was studied. Sulfonated Pol

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Weng, Zhang, Z. Q. Jing, Yu Kong, and Wei Shen. "Comparative Studies of Activated Carbon-Attapulgite and Zeolite-Attapulgite Composite Adsorbent on Congo Red Adsorption." Applied Mechanics and Materials 33 (October 2010): 34–37. http://dx.doi.org/10.4028/www.scientific.net/amm.33.34.

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This study investigated the adsorption of congo red by activated carbon-attapulgite composite adsorbent (ACA) and zeolite-attapulgite composite adsorbent (ZA) from aqueous solution. All of these two adsorbents have mesopores and macropores structure different from general activated carbon adsorbent with micropores distribution through analysis of mercury porosimeter .The research focused on the effects of adsorption capacity in four aspects: contact time, solution pH, temperature and initial dye concentration. The results indicated that ACA had higher adsorption rate in the first 30 min contac

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Esaifan, Muayad, Laurence N. Warr, Georg Grathoff, et al. "Synthesis of Hydroxy-Sodalite/Cancrinite Zeolites from Calcite-Bearing Kaolin for the Removal of Heavy Metal Ions in Aqueous Media." Minerals 9, no. 8 (2019): 484. http://dx.doi.org/10.3390/min9080484.

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A hydroxy-sodalite/cancrinite zeolite composite was synthesized from low-grade calcite-bearing kaolin by hydrothermal alkali-activation method at 160 °C for 6 h. The effect of calcite addition on the formation of the hydroxy-sodalite/cancrinite composite was investigated using artificial mixtures. The chemical composition and crystal morphology of the synthesized zeolite composite were characterized by X-ray powder diffraction, infrared spectroscopy, scanning electron microscopy, and N2 adsorption/desorption analyses. The average specific surface area is around 17–20 m2·g−1, whereas the averag

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Belyanovskaya, Elena, Grigoriy Pustovoy, Yana Sergiyenko, et al. "Performance of the Adsorptive Solar Refrigerators Based on Composite Adsobents ’Silica Gel – Sodium Sulphate’." Advances in Thermal Processes and Energy Transformation 2, no. 2 (2019): 19–23. http://dx.doi.org/10.54570/atpet2019/02/02/0019.

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The performance of adsorptive solar refrigerators based on composite adsorbents ‘silica gel - sodium sulphate’ is studied. An optimum composition of adsorbent ’silica gel – sodium sulphate’ is suggested to be of 20 % silica gel and 80 % sodium sulphate. The basic factors affected the net coefficient of energy performance of the adsorptive solar refrigerator were stated. Net coefficients of performance of solar adsorptive refrigerator based on composite ‘silica gel – sodium sulphate’ are stated to change from 0.25 to 0.34 during operating period. Utilization of the adsorption heat is suggested

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LI, Yanhong, Yinian ZHU, Zongqiang ZHU, Xuehong ZHANG, Dunqiu WANG, and Liwei XIE. "FIXED-BED COLUMN ADSORPTION OF ARSENIC(V) BY POROUS COMPOSITE OF MAGNETITE/HEMATITE/CARBON WITH EUCALYPTUS WOOD MICROSTRUCTURE." Journal of Environmental Engineering and Landscape Management 26, no. 1 (2018): 38–56. http://dx.doi.org/10.3846/16486897.2017.1346513.

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The fixed-bed column adsorption-desorption of As(V) by the porous composite of iron oxides and carbon with eucalyptus wood hierarchical microstructure (PC-Fe/C) was experimentally studied. The increase in the influent As(V) concentration and the inflow rate resulted in an earlier exhaustion of the column. The breakthrough curves indicated that a larger adsorbent mass, a smaller adsorbent grain size and a lower influent pH prolonged the column life span. The operating temperature had negligible effect. All breakthrough curves could be well fitted with the Thomas and Yoon–Nelson models. Under th

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Wulan, Putri, Yuni Kusumastuti, and Agus Prasetya. "Removal of Fe (II) from Aqueous Solution by Chitosan Activated Carbon Composite Beads." Applied Mechanics and Materials 898 (May 2020): 3–8. http://dx.doi.org/10.4028/www.scientific.net/amm.898.3.

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The high levels of Fe2+ metal ion in water can be reduced by adsorption process. The adsorbent used is a composite of chitosan activated carbon. The composites were prepared by adding 1.5 g of activated carbon into chitosan solution 1.5% (w/v). The gels of chitosan activated carbon were then dropped into a 2.8% NaOH solution mixture to produce composite beads. The beads were neutralized using aquadest and dried in an oven at 50oC for 2 hours. The dried bead was used as adsorbent. The adsorption process was carried out with erlenmeyer in shaker bath with 0.5 g, 1 g, and 1.5 g at 25oC, 35oC and

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Zhu, Yuanrong, Xianming Yue, and Fazhi Xie. "Adsorptive removal of phosphate by a Fe–Mn–La tri-metal composite sorbent: Adsorption capacity, influence factors, and mechanism." Adsorption Science & Technology 38, no. 7-8 (2020): 254–70. http://dx.doi.org/10.1177/0263617420942709.

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Reducing input of phosphorus is the key step for control of eutrophication and algal blooming in freshwater lakes. Adsorption technology is a cost-effective technology for phosphate removal in water for the purpose. Thus, in this study, a novel Fe–Mn–La tri-metal composite sorbent was developed, and then evaluated for phosphate removal. The results showed that the maximum adsorption capacity could be approached to 61.80 mg g−1 at 25°C under pH of 6.03. Adsorption of phosphate by Fe–Mn–La tri-metal composite adsorbent fitted better by pseudo-second-order kinetic equation and Langmuir model, whi

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Sari, Lisa, Anis Shofiyani, and Ajuk Sapar. "Synthesis and Characterization of Silica-Biochar Composite as Rhodamine B Dye Adsorbent." Jurnal Kimia Sains dan Aplikasi 27, no. 6 (2024): 284–92. http://dx.doi.org/10.14710/jksa.27.6.284-292.

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Composites are synthesized by combining different materials, resulting in properties suitable for use as adsorbents due to the combination of pores and functional groups within the constituent materials. This study developed a silica-biochar composite to serve as an adsorbent for rhodamine B dye, utilizing silica derived from red mud and biochar obtained from oil palm empty fruit bunches (OPEFB). This research focused on analyzing the characteristics and effectiveness of the composite as an adsorbent by varying its composition. Silica from red mud exhibited a purity of 80.05% and possessed sil

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Ji, Zheng, Yansong Zhang, Huchuan Wang, and Chuanrun Li. "Polypropylene Glycol Modified Chitosan Composite as a Novel Adsorbent to Remove Cu(II) From Wastewater." Tenside Surfactants Detergents 58, no. 6 (2021): 486–89. http://dx.doi.org/10.1515/tsd-2021-2388.

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Abstract Pollution by heavy metals has become a problem that needs to be solved urgently. Therefore, the development of new efficient adsorbents to treat this pollution is of great importance. Due to their excellent adsorption properties and good biodegradability, natural polymeric materials are potential problem solvers. This study reports on the production and application of polypropylene glycol modified chitosan composites (PMC). The PMC composite material has many functional groups (–OH and –NH2). Its maximum adsorption capacity for Cu(II) is 661.8 mg g–1. The corresponding adsorption stud

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Susilawati, E. Frida, Andriayani, et al. "Characterization of Adsorbents Based on Pahae Natural Zeolite and Candlenut Shell Activated Carbon for Peat Water Purification." Journal of Physics: Conference Series 2866, no. 1 (2024): 012010. http://dx.doi.org/10.1088/1742-6596/2866/1/012010.

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Abstract The importance of developing effective adsorbents for environmental applications cannot be overstated, particularly in the context of water and wastewater treatment. Previous research has extensively explored various natural and synthetic materials for their adsorption capabilities. Pahae natural zeolite, a naturally occurring aluminosilicate mineral, is known for its excellent ion-exchange properties and high surface area, making it a promising candidate for pollutant removal. Similarly, activated carbon derived from agricultural by-products, such as candlenut shells, has been recogn

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Tabrizi, Nooshin Salman, and Maryam Yavari. "Preparation of Shaped Carbon Nanotube Composites with Porous Structures." Advanced Materials Research 829 (November 2013): 46–51. http://dx.doi.org/10.4028/www.scientific.net/amr.829.46.

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Porous structures of carbon nanotube (CNT) composites with highly accessible surface areas have numerous potential applications such as heterogeneous catalysts and adsorbents. In this study sodium alginate was added to CNTs dispersions as gelling agent. Before being dried, the hydrogels were shaped into bead, disk, and sheet forms. The alginate in the composites was then decomposed by heating up the samples under an inert gas. The morphology of the as-prepared composite was studied by scanning and transmission electron microscopy and the pore size distribution was measured by BJH method. The M

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Okon, Okon E., Edu J. Inam, Nnanake-Abasi O. Offiong, and Ukana D. Akpabio. "Aqueous Adsorptive Removal of Bisphenol A Using Tripartite Magnetic Montmorillonite Composites." Pollutants 2, no. 3 (2022): 363–87. http://dx.doi.org/10.3390/pollutants2030025.

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The adsorption of bisphenol A into untreated montmorillonite clay, doped titanium composite and cationic polymer modified tripartite magnetic montmorillonite composite was investigated under different conditions. The magnetic property of the modified adsorbent was ascertained by action of external magnetic field on the materials when dispersed in aqueous media. The XRD results for the unmodified and modified adsorbents showed that interlayer spacing of the clay material increases due to intercalation of the precursor molecules. The textural properties of the adsorbents from BET analysis showed

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Sultana, Marzia, Md Raju Ahmmed, Md Inzamam Ul Hoque, et al. "Biodegradable Composite of Gelatin Blend Microcrystalline Cellulose for Cd2+, Pb2+, and Cr3+ Adsorption from an Aqueous Solution." Advances in Polymer Technology 2023 (June 29, 2023): 1–17. http://dx.doi.org/10.1155/2023/1893660.

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Biodegradable and eco-friendly composite adsorbent was synthesized from modified jute fiber and gelatin and evaluated its efficacy in removing cadmium (Cd2+), lead (Pb2+), and chromium (Cr3+) ions from an aqueous solution. The prepared sample was characterized using Fourier transform infrared spectroscopy, scanning electron microscopy, and energy dispersive X-ray analyses, which revealed that gelatin successfully intercalated into the microcrystalline cellulose matrix. In batch adsorption studies, the effects of pH, adsorbent dosage, initial metal ions concentration, and temperature on the rem

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Seo, Jin Ho, Cheol Soon Choi, Jin Ho Bae, Hanseob Jeong, Seung-Hwan Lee, and Yong Sik Kim. "Preparation of a lignin/polyaniline composite and its application in Cr(VI) removal from aqueous solutions." BioResources 14, no. 4 (2019): 9169–82. http://dx.doi.org/10.15376/biores.14.4.9169-9182.

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Lignin/polyaniline composites were prepared by adding kraft lignin for the synthesis of polyaniline (PANI), a typical conductive polymer. The composites were utilized as an adsorbent for the removal of hexavalent chromium (Cr(VI)). When lignin alone was used as an adsorbent, the removal efficiency of Cr was low. However, when the lignin/PANI composite was used, lignin and PANI adsorbed Cr(III) together. The PANI reduced Cr(VI), which resulted in the efficient removal of Cr. In addition, as the dosage of the lignin/PANI composite decreased as an adsorbent, the Cr removal efficiency of the compo

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Benhachem, Fatima, Hanane Mahroug, Meriem Bendjelloul, et al. "Enhanced adsorption properties of Algerian bentonite modified by starch and glycerol for methylene blue and red methyl retention." Journal of the Serbian Chemical Society, no. 00 (2024): 108. https://doi.org/10.2298/jsc240219108b.

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This paper describes the preparation of novel bentonite-starch composites, and assesses their effectiveness as adsorbents for removing methylene blue (MB) and methyl red (MR) dyes from aqueous solutions. The adsorbents were characterized using X-ray diffraction and FTIR spectroscopy. The study aimed to optimize the removal process by investigating the effect of pH, adsorbent dose, contact time, and initial concentration. The sorption kinetics of MB and MR dyes were analyzed using the pseudo-first order and pseudo-second-order models. The experimental results indicate that the pseudo-second ord

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Nahid, Rasouli, and Khalili Atefeh. "Enhanced adsorption capability of Congo red dye onto novel Polypyrrole/ZnO/ZnCr2O4 composite." Chemistry Research Journal 2, no. 3 (2017): 1–10. https://doi.org/10.5281/zenodo.13954812.

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In this study, the polypyrrole/ZnO/ZnCr<sub>2</sub>O<sub>4</sub>composite as an efficient adsorbent was synthesized by two steps. At first, zinc oxide/zinc chromite (ZnO/ZnCr<sub>2</sub>O<sub>4</sub>) composite was synthesized using simple and facile co-precipitation method. Then, ZnO/ZnCr<sub>2</sub>O<sub>4</sub>composite was modified by polypyrrole (PPy). The adsorbent was characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDXA). The PPy/ZnO/ZnCr<sub>2</sub>O<sub>4</sub> compositesho

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Nahid, Rasouli, and Khalili Atefeh. "Enhanced adsorption capability of Congo red dye onto novel Polypyrrole/ZnO/ZnCr2O4 composite." Chemistry Research Journal 2, no. 3 (2017): 98–107. https://doi.org/10.5281/zenodo.13955182.

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In this study, the polypyrrole/ZnO/ZnCr<sub>2</sub>O<sub>4</sub>composite as an efficient adsorbent was synthesized by two steps. At first, zinc oxide/zinc chromite (ZnO/ZnCr<sub>2</sub>O<sub>4</sub>) composite was synthesized using simple and facile co-precipitation method. Then, ZnO/ZnCr<sub>2</sub>O<sub>4</sub>composite was modified by polypyrrole (PPy). The adsorbent was characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDXA). The PPy/ZnO/ZnCr<sub>2</sub>O<sub>4</sub> compositesho

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Nursanto, Edy, and Mycelia Pradise. "Adsorption of Iron (Fe) Heavy Metal in Acid Mine Drainage from Coal Mining." RSF Conference Series: Engineering and Technology 1, no. 1 (2021): 500–509. http://dx.doi.org/10.31098/cset.v1i1.421.

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Adsorption is one of effective method to overcome acid mine drainage issue because of its economy and abundant availability of adsorbents. The research aimed to analyze the adsorption effectiveness and capacity of composite as the iron adsorbent in acid mine drainage. Composite consists of claystone from coal overburden, zeolite, and activated carbon from coconut shell. This study used experimental approaches in laboratory. Types of mineral contained in adsorbent materials (claystone, zeolite, and activated carbon) were: kaolinite, mordenite, and cristobalite. Composites were constructed with

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Shafiq, Muhammad, Abdulrahman Ali Alazba, and Muhammad Tahir Amin. "Functionalized Bentonite Clay Composite with NiAl-Layered Double Hydroxide for the Effective Removal of Cd(II) from Contaminated Water." Sustainability 14, no. 22 (2022): 15462. http://dx.doi.org/10.3390/su142215462.

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In this study, the efficiency of functionalized bentonite (F-bentonite) and NiAl-layered double hydroxide (LDH), as well as their nanocomposites, was explored regarding the adsorption of cadmium ions (Cd2+) in batch tests. Surface characterization using SEM, EDX, and FTIR analyses confirmed the successful loading of LDH (NiAl) onto the F-bentonite and the adsorption of Cd2+ onto the F-bentonite, LDH (NiAl), and LDH/F-bentonite composite adsorbent, suggesting ion exchange and surface precipitation as the main controlling mechanisms of the formation of adsorbent. An equilibrium contact period of

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Rodinkov, Oleg, Victor Postnov, Valery Spivakovskyi, et al. "Comparison of Adsorbents Containing Carbon Nanotubes for Express Pre-Concentration of Volatile Organic Compounds from the Air Flow." Separations 8, no. 4 (2021): 50. http://dx.doi.org/10.3390/separations8040050.

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New composite adsorbents including silica supports (silica, aerosilogel, and diatomite) and carbon materials (multiwall carbon nanotubes and pyrolytic carbon) have been prepared and characterized. The analytical capabilities of the produced sorbents have been evaluated by their efficiency in the express pre-concentration of volatile organic compounds (butanol and phenols) from the air stream. The prepared surface-layered adsorbents containing multiwall carbon nanotubes placed onto the surface of aerosilogel by use of the carbon vapor deposition method with preloading cobalt nanostructures as a

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Wasti, Tanzeela Z., Muhammad Sultan, Muhammad Aleem, et al. "An overview of solid and liquid materials for adsorption-based atmospheric water harvesting." Advances in Mechanical Engineering 14, no. 3 (2022): 168781322210827. http://dx.doi.org/10.1177/16878132221082768.

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Thermally driven adsorption-based atmospheric water harvesting (AWH) is becoming an emerging technology to provide potable water. In this regard, various adsorbent materials including solid (MOFs, silica-gels, and zeolites), liquid (CaCl2 and LiCl), and composite adsorbents are explored in the literature. This study reviews recent advancements in adsorbent materials based on their water production capacity at different conditions that is air temperature and relative humidity (RH). The MOF of type MIL-101(Cr) shows water production capacity of 3.10 L/m2/day at RH ranging from 10% to 40%. Simila

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Susilowati, Atika Wahyu Wulan Romadoni, Dimas Anugrah Ramadhan, and Jimmy Jimmy. "The Effectiveness of Ferric Chloride (FeCl₃) And Zeolite in Reducing Copper Heavy Metal and Dye Contaminants in Batik Industry Wastewater Treatment." Revista de Gestão Social e Ambiental 19, no. 2 (2025): e011240. https://doi.org/10.24857/rgsa.v19n2-032.

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Objective: This study aims to evaluate the effectiveness of ferric chloride (FeCl₃) and zeolite as adsorbents in reducing copper content and dye pollutants in batik wastewater. Theoretical Framework: Adsorption was chosen as the method for this study due to its suitability in addressing the challenges of batik wastewater treatment. Modifications in the preparation of adsorbents represent an effective approach for developing adsorption models and assessing their performance. The adsorbent used in this study is FeCl₃/zeolite, a composite material created through an impregnation process that comb

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