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1

Zahro, Septi Fatimatus, and Sandyanto Adityosulindro. "Literature Review: Penggunaan Bahan Berbasis Limbah Sebagai Adsorben untuk Degradasi Zat Warna pada Air Limbah." Jurnal Kesehatan Lingkungan Indonesia 22, no. 3 (2023): 359–68. http://dx.doi.org/10.14710/jkli.22.3.359-368.

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Latar belakang: Penggunaan adsorben bahan limbah dari limbah pertanian, industri maupun bahan alam menjadi alternatif baru dalam pengolahan air limbah yang mengandung zat warna. Limbah ini dapat menyebabkan berbagai masalah kesehatan bagi makhluk hidup mulai dari alergi, cidera permanen, asma, bahkan kanker. Tujuan review artikel ini adalah untuk memberikan informasi tren penelitian penggunaan adsorben dari bahan limbah dalam penyisihan zat warna serta informasi mengenai komposisi bahan, dan pengaplikasiannya sebagai potensi alternatif baru bahan adsorben dalam pengolahan limbah.Metode: Metode
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2

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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Purbaningtias, Tri Esti, Bayu Wiyantoko, Puji Kurniawati, and Didik Prasetyoko. "A Study of Isotherm and Kinetic Models of Methylene Blue and Methyl Orange Adsorption Using Indonesian Natural Zeolite and Agricultural Waste." Advanced Materials Research 1162 (April 2021): 93–100. http://dx.doi.org/10.4028/www.scientific.net/amr.1162.93.

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This study discusses the development of Indonesian natural zeolite and agricultural waste i.e bagasse ash and rice husk ash as natural adsorbents. These materials were used as an adsorbent for methyl orange and methylene blue adsorption for isotherm and kinetic study. Adsorption kinetic models for methyl orange and methylene blue with all adsorbents were a pseudo-second-order except methyl orange adsorption with bagasse ash adsorbent (MA) that followed pseudo-first-order. Isotherm models for all adsorption experiments were Langmuir type except methyl orange adsorption using rice husk adsorbent
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Fadhilah, Lailatul, Jasmidi Jasmidi, Rini Selly, and Moondra Zubir. "Water Purification Process Uses Adsorbents From Natural." Indonesian Journal of Chemical Science and Technology (IJCST) 4, no. 1 (2021): 42. http://dx.doi.org/10.24114/ijcst.v4i1.23095.

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Adsorbent is an adsorption that is used to absorb various pollutants. Adsorbents can be used from natural materials. Natural ingredients that can be used are oil palm empty bunches. Oil palm empty bunches are a carbon-rich material that is getting new research interest in adsorption because of its abundance and properties. Oil palm empty bunches contain carbon, nitrogen, hydrogen, oxygen, sulfur, lignin, hemicellulose, and cellulose. Oil palm empty bunches are used as adsorbent for water saturation.
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Putra, Alfian, Zaimahwati, Rizal Syahyadi, Teuku Rihayat, and Nurhanifa Aidy. "REMOVAL OF HG(II) METAL IONS USING KAOLIN ADSORBENTS MODIFIED WITH ANIONIC SURFACTANT AND EFFICIENT ULTRASONIC ASSISTED." International Journal of Research -GRANTHAALAYAH 9, no. 11 (2021): 72–84. http://dx.doi.org/10.29121/granthaalayah.v9.i11.2021.4379.

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This study reported the reduction of metal Hg(II) from water using natural kaolinite (NK) based adsorbents compared with modified kaolinite adsorbents with Hexadecyl trimethyl ammonium bromide anionic surfactants using ultrasonic technology (SMK). These adsorbent samples were characterized using several different techniques such as FTIR, X-RD and AAS analysis. The adsorption capacity is influenced by variables such as the contact time and adsorben dosage. The results of the analysis reported that the maximum waste reduction efficiency occurs in modified kaolin (SMK), where adsorption occurs fa
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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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7

YEO, Kanfolo Franck Herve, Chaokun Li, Hui Zhang, Jin Chen, Wendong Wang, and Yingying Dong. "Arsenic Removal from Contaminated Water Using Natural Adsorbents: A Review." Coatings 11, no. 11 (2021): 1407. http://dx.doi.org/10.3390/coatings11111407.

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More than 170 million individuals have been influenced by arsenic (As) because of the ingestion of As-polluted groundwater. The presence of As in water bodies, particularly groundwater, has been found to become a widespread issue in the past few decades. Because arsenic causes extreme wellbeing impacts, even at a low concentration in drinking water, the innovations of As removal from contaminated water are of significant importance. Traditional strategies, for example, reverse osmosis, ion exchange, and electro-dialysis are generally utilized for the remediation of As-polluted water; however,
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8

Cornejo, J., R. Celis, I. Pavlovic, and M. A. Ulibarri. "Interactions of pesticides with clays and layered double hydroxides: a review." Clay Minerals 43, no. 2 (2008): 155–75. http://dx.doi.org/10.1180/claymin.2008.043.2.01.

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AbstractThe increasing presence of pesticides in natural ecosystems has stimulated research to look for improved adsorbent materials which can be used to remediate and prevent soil and water contamination by these compounds. Among the different materials that have been assayed as adsorbents of pesticides are natural clay minerals, particularly 2:1 phyllosilicates and their structurally complementary synthetic analogues layered double hydroxides (LDHs). The great interest in natural clays and LDHs as adsorbent materials is mainly related to the large specific surface areas associated with their
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9

Sawalha, Hassan, Aseel Bader, Jinan Sarsour, Maher Al-Jabari, and Eldon R. Rene. "Removal of Dye (Methylene Blue) from Wastewater Using Bio-Char Derived from Agricultural Residues in Palestine: Performance and Isotherm Analysis." Processes 10, no. 10 (2022): 2039. http://dx.doi.org/10.3390/pr10102039.

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The main aim of this study was to perform a parametric study for treating a model dye containing wastewater (i.e., methylene blue, MB) using locally available biomass wastes in Palestine as the adsorbent. Eight different types of biomasses were investigated in batch adsorption tests, including coffee grains, almond shells, pistachio shells, date pits, jute sticks, sunflower shells, peanut shells, and grapevine sticks. The experiments were conducted on three different phases of processing for these materials: as natural adsorbents, biochar, and activated carbon. The biochar was prepared by pyro
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10

Baimuratova, Zhaina, Sayat Ermekov, Adriano Silva, Hélder Gomes, and Marzhan Kalmakhanova. "New magnetic clays MnFe2O4/Shymkent for removal of heavy metals from wastewater." E3S Web of Conferences 474 (2024): 01034. http://dx.doi.org/10.1051/e3sconf/202447401034.

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This paper reports the development of a new method. Production of modified clay with magnetic properties based on natural clay from the Shymkent deposit (MnFe2O4/Shymkent nanocomposite), determination of its chemical composition and structure, as well as the study of basic physicochemical properties. The resulting magnetic nanocomposite was then used as an adsorbent to remove nickel (II) ions from wastewater. The prepared magnetic nano composite was then used as adsorbent to remove Ni (II) ions from wastewater, and the optimal conditions for determining thermodynamic and kinetic parameters wer
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11

Sankari, J., P. Kalaivani, D. Sitrarasu, R. Pagutharivalan, and N. Kannan. "Adsorption Study With Different Eco-Friendly Activated Carbons For The Removal Of Basic Dye From Aqueous Solution." International Journal of Environmental Sciences 11, no. 5s (2025): 323–36. https://doi.org/10.64252/4gd42g36.

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A carbonaceous adsorbent prepared from plant material like Acacia Arabic Bark Carbon (AABC) was found to show good porosity, appreciable surface area and consequently adsorbs dyes to an appreciable extent. Effect of various experimental parameters have been investigated using batch adsorption technique at room temperature (30±1°C) and the adsorption of Rhodamine B (RB) on carbonaceous adsorbent confirms to Langmuir equation, is a first-order process and pore diffusion controlled. The efficiency of carbonaceous adsorbent was evaluated by comparing the results with those obtained on a Commercial
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12

Mudasir, Mudasir, Febbi Rahmayuni, and Sri Sudiono. "Removal of Pb(II) Ion from Aqueous Solution Using Dithizone-Immobilized Natural Bentonite." Key Engineering Materials 884 (May 2021): 10–16. http://dx.doi.org/10.4028/www.scientific.net/kem.884.10.

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Removal of Pb(II) ion using activated and dithizone-immobilized natural bentonites has been carried out. Natural bentonite was activated by immersing and stirring the bentonite in 6M HCl solution. The dithizone-immobilized natural bentonite was prepared by mixing the bentonite and dithizone in toluene at 50 °C for 6 h and the immobilized adsorbents was characterized by FTIR and XRD. The dithizone immobilization is aimed to increase the capacity and selectivity of the adsorbent towards Pb(II) ions. Characterization results suggest that dithizone has been successfully immobilized on the surface
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13

Kyzas, George, Evi Christodoulou, and Dimitrios Bikiaris. "Basic Dye Removal with Sorption onto Low-Cost Natural Textile Fibers." Processes 6, no. 9 (2018): 166. http://dx.doi.org/10.3390/pr6090166.

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Over the last several years, the trend of researchers has been to use some very low-cost materials as adsorbents. For this purpose, some already commercially used bast fibers were selected as potential adsorbent materials to remove basic dye from synthetic effluents. The adsorption of basic yellow 37 dye was studied using three different bast fibers under the names of flax, ramie, and kenaf. Their morphological structure was examined using several techniques such as scanning electron microscopy (SEM), crystallinity, X-Ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR), as
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14

Uçurum, Metin, Akın Özdemir, Çağatay Teke, Hüseyin Serencam, and Mümtaz İpek. "Optimization of Adsorption Parameters for Ultra-Fine Calcite Using a Box-Behnken Experimental Design." Open Chemistry 16, no. 1 (2018): 992–1000. http://dx.doi.org/10.1515/chem-2018-0114.

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AbstractRemoval of heavy metals from wastewater is a significant issue because it prevents environmental-based concerns and impacts a large number of diseases and disorders. Many low-cost natural materials have been offered recently as possible precursors to commercial synthetic adsorbents. Ultra-fine calcite, one of these natural materials, has been investigated as a potential commercial adsorbent. Response surface designs are effective experimental techniques to investigate the heavy metal adsorption capacity of ultra-fine calcite. In the present study, one such response surface design, Box-
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15

Miura, A., T. Kubota, K. Hamada, and T. Hitomi. "Adsorption efficiency of natural materials for low-concentration cesium in solution." Water Science and Technology 73, no. 10 (2016): 2453–60. http://dx.doi.org/10.2166/wst.2016.098.

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In this study, several natural materials were investigated in order to clarify their potential use as cesium (Cs) adsorbents in situ. Four materials – carbonized rice hull, beech sawdust, oak sawdust, and charcoal (Japanese cedar) – which were previously shown to have Cs adsorption capabilities, were examined. Cs adsorption experiments were conducted using different initial Cs and adsorbent concentrations. The physical properties, adsorption isotherms, and adsorption processes were then examined, so as to exploit the Cs adsorption characteristics in the field. Based on these findings, carboniz
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16

Sukmana, Hadid, Naoufal Bellahsen, Fernanda Pantoja, and Cecilia Hodur. "Adsorption and coagulation in wastewater treatment – Review." Progress in Agricultural Engineering Sciences 17, no. 1 (2021): 49–68. http://dx.doi.org/10.1556/446.2021.00029.

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Abstract Wastewater issues became a complex challenge in the world. There are several methods in wastewater treatment, such as chemical, physical, biological, and the combination of each method. However, each process has advantages and disadvantages. The physicochemical methods are common methods used in wastewater treatment, such as adsorption and coagulation. Adsorption and coagulation are excellent methods to remove pollutants. The adsorption process is greatly influenced by pH, adsorbent dose, temperature, and contact time. Coagulant dose, settling time, and pH are the main factors in the
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17

NASIRUDDIN KHAN, M., and ANILA SARWAR. "DETERMINATION OF POINTS OF ZERO CHARGE OF NATURAL AND TREATED ADSORBENTS." Surface Review and Letters 14, no. 03 (2007): 461–69. http://dx.doi.org/10.1142/s0218625x07009517.

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Although particle size and its measurement are intuitively familiar to particle technologists, the concept of point of zero charge (pzc) is less widely understood and applied. This is unfortunate since it is at least as fundamentally important as particle size in determining the behavior of particulate materials, especially those with sizes in the colloidal range below a micrometer. pzc is related to the charge on the surface of the particle and strongly depends on the pH of the material; so it influences a wide range of properties of colloidal materials, such as their stability, interaction w
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18

Gopakumar, Abhijith, Rakesh Narayan, Sidharth Ajay Nagath, Nishanthan P, Razim Mohammed. S, and Smitha Chandran S. "Waste Water Treatment Using Economically Viable Natural Adsorbent Materials." Materials Today: Proceedings 5, no. 9 (2018): 17699–703. http://dx.doi.org/10.1016/j.matpr.2018.06.091.

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Nhung, Nguyen Thi Hong, Vo Dinh Long, and Toyohisa Fujita. "A Critical Review of Snail Shell Material Modification for Applications in Wastewater Treatment." Materials 16, no. 3 (2023): 1095. http://dx.doi.org/10.3390/ma16031095.

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Sea material is becoming increasingly popular and widely used as an adsorbent in wastewater treatment. Snail shell, a low-cost and natural animal waste material, has been shown to have a high calcium content (>99%) and a large potential surface area for the development of sustainable adsorbents. This paper presents a novel synthesis of methods for using snail shell absorbent materials in the treatment of wastewater containing heavy metals, textile dyes, and other organic substances. Modified biochar made from snail shells has gained popularity in recent years due to its numerous benefits. T
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20

Hadoudi, Nouhaila, Hassan Amhamdi, and M’hamed Ahari. "Sorption of bisphenol A from aqueous solutions using natural adsorbents: isotherm, kinetic and effect of temperature." E3S Web of Conferences 314 (2021): 07003. http://dx.doi.org/10.1051/e3sconf/202131407003.

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Emerging organic micropollutants, such as bisphenol A (BPA), have raised concerns about their negative impact on human health and ecological safety. This review article aims to demonstrate and highlight recent advances in adsorption applications for bisphenol A, a toxic environmental pollutant commonly found in wastewater. There are many reasons to use non-toxic materials and eco-friendly technologies to remove this pollutant from sewage. [1] Several adsorbents previously used have shown significant efficiency and performance for the removal of BPAs, and current research is directed towards th
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Afolabi, Matluck, Ogechi Amanda Onukogu, Thompson Odion Igunma, Adeniyi K. Adeleke, and Zamathula Q. Sikhakhane Nwokediegwu. "Systematic Review of Adsorbent Materials for Heavy Metal Removal in Continuous Wastewater Flow Systems." Journal of Frontiers in Multidisciplinary Research 3, no. 1 (2022): 294–310. https://doi.org/10.54660/.jfmr.2022.3.1.294-310.

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This systematic review examines the application of adsorbent materials for the removal of heavy metals in continuous flow wastewater treatment systems, emphasizing their effectiveness, regeneration potential, and scalability in real-time industrial and municipal settings. Heavy metal contamination, originating from industries such as electroplating, mining, and battery manufacturing, poses severe ecological and public health risks. Continuous flow systems offer operational advantages over batch processes, including consistent throughput, automation compatibility, and suitability for large-scal
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Haryanto, B., A. Pelawi, Octavia, et al. "Natural operation in removing waste compounds within cooking oil using corn cob as adsorbent." IOP Conference Series: Earth and Environmental Science 1241, no. 1 (2023): 012114. http://dx.doi.org/10.1088/1755-1315/1241/1/012114.

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Abstract Cooking oil as foodstuffs that people necessary daily, both industry and households. The high price of cooking oil encourages people to use it repeatedly. The use of used cooking oil continuously can decrease the intrinsic value of the oil and toxic. One method to enhance the quality of used cooking oil is adsorption. The effort to regenerate used cooking oil for sustainability, adsorbents from environment materials are used to adsorb components in used cooking oil in order to raise the standard of cooking oil after purification and can be processed into other products such as biodies
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Ali Akbar, Said, Lisa Mauliza, and Rahmad Rizki Fazli. "Recent advances in carbon-based adsorbent materials for ammonium removal from water." BIO Web of Conferences 156 (2025): 02014. https://doi.org/10.1051/bioconf/202515602014.

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This systematic review examines recent advancements in carbon-based adsorbent materials for ammonium removal from water, a critical issue due to contamination from agricultural, domestic, and industrial sources. Elevated ammonium levels disrupt aquatic ecosystems and compromise water quality. Among various technologies, ion exchange and adsorption using materials such as activated carbon (AC) and biochar are highlighted for their efficiency, cost-effectiveness, and environmental benefits. Modified adsorbents, like manganese oxide-loaded AC, significantly enhance removal performance. Biochars,
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Mosoarca, Giannin, Cosmin Vancea, Simona Popa, and Sorina Boran. "Bathurst Burr (Xanthium spinosum) Powder—A New Natural Effective Adsorbent for Crystal Violet Dye Removal from Synthetic Wastewaters." Materials 14, no. 19 (2021): 5861. http://dx.doi.org/10.3390/ma14195861.

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A new natural adsorbent material, Bathurst burr powder, was used to remove crystal violet dye from synthetic wastewaters. Particle size distribution and SEM and FTIR analyses were performed to characterize it. The effect of the operational adsorption process parameters (pH, ionic strength, initial dye concentration, adsorbent dose, contact time, temperature) onto the adsorption process was evaluated in a batch system. Equilibrium, kinetic, and thermodynamic studies were performed in order to understand the adsorption process. Taguchi method and ANOVA test were used to optimize the dye adsorpti
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Bocarov-Stancic, A., M. Adamovic, N. Salma, M. Bodroza-Solarov, J. Vuckovic, and V. Pantic. "In vitro efficacy of mycotoxins adsorption by natural mineral adsorbents." Biotehnologija u stocarstvu 27, no. 3 (2011): 1241–51. http://dx.doi.org/10.2298/bah1103241b.

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The paper describes in vitro model for evaluation of natural mineral adsorbents ability to adsorb mycotoxins. Bentonite, diatomite and zeolite were prepared in the Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade. A total of six mycotoxins: aflatoxin B1 (AFL), ochratoxin A (OTA), deoxynivalenol (DON), zearalenone (ZON), diacetoxyscirpenol (DAS) and T-2 toxin were tested in vitro. For adsorption experiments crude extracts of mycotoxins, produced in the Department of Microbiology of Bio-ecological Center in Zrenjanin, were used. The ability for binding mycotoxins was
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Berdiyev, Sherzodbek, Furkat Erkabayev, Tuychi Pirimov, and Dilshod Rakhimov. "Comparison of zeolite adsorbent with N-permutite adsorbent." BIO Web of Conferences 116 (2024): 03008. http://dx.doi.org/10.1051/bioconf/202411603008.

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Zeolite is an aluminosilicate mineral with a three-dimensional framework structure with interconnected cavities and channels, which makes its surface area very large and effective as an adsorbent. There are currently natural and artificial types of zeolites. The high adsorption efficiency of zeolite is used as an adsorbent in all areas of the chemical industry. This scientific work obtained an alternative version of zeolite by synthesizing H-permutite based on natural raw materials. To study the characteristics of the structure of the molecular compounds of the studied samples, the Nicolet iS5
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Tolkou, Athanasia K., Konstantinos N. Maroulas, Dimitrios Theologis, Ioannis A. Katsoyiannis, and George Z. Kyzas. "Comparison of Modified Peels: Natural Peels or Peels-Based Activated Carbons for the Removal of Several Pollutants Found in Wastewaters." C 10, no. 1 (2024): 22. http://dx.doi.org/10.3390/c10010022.

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Wastewater treatment has attracted much attention in recent years as a potential source of water, and there are some concerns about its safety for human use. Eco-friendly and cost-effective adsorbent materials were successfully synthesized from several peels, such as orange, banana, pomegranate, avocado, kiwi, etc., and were used as natural adsorbents or as activated carbons derived from these peels for water and wastewater treatment. In this review, the latest research focusing on the effective modification of these peels for the removal of several pollutants found in wastewaters are summariz
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Eakta, Thakre*1 &. Devendra Dohare2. "DEVELOPMENT OF LOW COST NATURAL ADSORBENT FOR THE TREATMENT OF WASTE WATER: A REVIEW." GLOBAL JOURNAL OF ENGINEERING SCIENCE AND RESEARCHES 6, no. 6 (2019): 196–201. https://doi.org/10.5281/zenodo.3262352.

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At present the environmental pollution is the biggest problem in front of world in recent years, the use of physical and Chemical treatments for the waste water are not economically feasible. Theuse of different Natural Adsorbent as  an  alternative  low  cost  adsorbent  for the treatment of waste water has  been extensively studied and compiled, together with their adsorption capacities. The advantages of adsorption over the conventional methods are low operating cost, selectivity for specific metal, short operational time and no chemical sludge. Removing o
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Sanford, Serena, Kripa S. Singh, Sahil Chaini, and Gaetan LeClair. "Study of natural adsorbent chitosan and derivatives for the removal of caffeine from water." Water Quality Research Journal 47, no. 1 (2012): 80–90. http://dx.doi.org/10.2166/wqrjc.2012.021.

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The adsorption of caffeine was evaluated using natural adsorbent chitosan and three derivates of the material. Raw, H2O2 pre-treated, and a chemically altered chitosan were compared to activated carbon. Activated carbon was found to have a high affinity for caffeine (98% removal) while raw chitosan performed poorly with an average adsorption of 15.9%. Batch tests in acidic and basic conditions as well as increasing dosage did not have an effect on the performance. Chemical modifications to chitosan included calcinated mesoporous materials and non-calcinated materials, both of which increased c
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Popadić, Daliborka, Nemanja Gavrilov, Ljubiša Ignjatović, et al. "How to Obtain Maximum Environmental Applicability from Natural Silicates." Catalysts 12, no. 5 (2022): 519. http://dx.doi.org/10.3390/catal12050519.

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Unmodified natural silicates (bentonite, kaolin, clinoptilolite and diatomites) were tested as adsorbents for the organic pollutants in water tables using Methylene Blue (MB) as the model adsorbate. Among the selected materials, bentonite adsorbed as much as 237 mg/g, confirming its excellent suitability for pollutant removal. Spectral evidence confirmed successful MB immobilization at the bentonite surface. Furthermore, the thermal treatment of MB-saturated adsorbent in an inert atmosphere at 700 °C produced a carbon/silicate composite. EDX confirmed the formation of the nitrogen-doped carbon
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Gracias, Wayan, Bonusa Nabila huda, Adhitasari Suratman, and Mudasir Mudasir. "Immobilization of Dithizone on Magnetic Zeolite in Less Toxic Medium and its Application as Adsorbent Cd(II) Ion in Water." Materials Science Forum 1076 (December 8, 2022): 133–42. http://dx.doi.org/10.4028/p-o0173e.

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One of the most dangerous pollutants frequently found in environment are heavy metal ions. Industrial effluents especially those rich in heavy metals are potential pollution source for aquatic environment. In this study, magnetic modification of activated natural zeolite (MZ) was prepared and then used as host for immobilization of dithizone in less toxic alkaline medium. The obtained material, dithizone-immobilized magnetic zeolite (MZD) was applied as adsorbents for adsorption of heavy metal Cd (II) ion in water. The mechanism of interaction between the adsorbent and Cd (II) ion was studied
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Bernal, M. P., and J. M. Lopez-Real. "Natural zeolites and sepiolite as ammonium and ammonia adsorbent materials." Bioresource Technology 43, no. 1 (1993): 27–33. http://dx.doi.org/10.1016/0960-8524(93)90078-p.

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Farhan, Muhammad Alfiza, Yuichi Sugai, Nuhindro Priagung Widodo, and Syafrizal Syafrizal. "The Development of a Low-Cost Method for Monitoring Methane Leakage from the Subsurface of Natural Gas Fields." Methane 1, no. 1 (2021): 24–37. http://dx.doi.org/10.3390/methane1010003.

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The leakage of methane from the subsurface on the coalfield or natural gas field invariably becomes an important issue nowadays. In notable addition, materials such as activated carbon, zeolites, and Porapak have been successfully identified as adsorbents. Those adsorbents could adsorb methane at atmospheric pressure and room temperature. Therefore, in this scholarly study, a new method using adsorbents to detect points of methane leakage that can cover a wide-scale area was developed. In the beginning, the most capable adsorbent should be determined by quantifying adsorbed methane amount. Fur
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Santoso, Shella Permatasari, Artik Elisa Angkawijaya, Kuan-Chen Cheng, et al. "Unlocking the Potential of Gallic Acid-Based Metal Phenolic Networks for Innovative Adsorbent Design." Molecules 30, no. 6 (2025): 1218. https://doi.org/10.3390/molecules30061218.

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Metal phenolic networks (MPNs) have attracted significant attention due to their environmentally benign nature, broad compatibility, and universal adhesive properties, making them highly effective for modifying adsorbent surfaces. These supramolecular complexes are formed through the coordination of metal ions with natural phenolic ligands, resulting in stable structures while retaining the active adsorption sites of the ligands, thereby enhancing the adsorption performance of unmodified substrates. Among various MPNs, metal ion gallic acid (GA) networks are particularly well-known for their e
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Yuliusman, Yuliusman, Widodo Wahyu Purwanto, and Yulianto Sulistyo Nugroho. "PEMILIHAN ADSORBEN UNTUK PENJERAPAN KARBON MONOKSIDA MENGGUNAKAN MODEL ADSORPSI ISOTERMIS LANGMUIR." Reaktor 14, no. 3 (2013): 225. http://dx.doi.org/10.14710/reaktor.14.3.225-233.

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ADSORBENT SELECTION FOR CO ADSORPTION USING LANGMUIR ISOTHERMIC ADSORPTION MODEL. The objective of this research is to choose the adsorbent that can be applied to decrease toxicity level and to purify fire smoke. In case of fire, toxicity level is high due to carbon monoxide. Adsorbent is chosen based on its ability to adsorb carbon monoxide using volumetric method in constant temperature. Materials to be tested are natural zeolite, active carbon, TiO2, CuO, MgO. Due to existence of organic and mineral polluters, natural zeolite needs to be activated prior to adsorption test using fluoride aci
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Khosla, Ekta. "Natural Clay -An Adsorbent for Basic Dye." International Journal of Advance Research and Innovation 4, no. 1 (2016): 1–4. http://dx.doi.org/10.51976/ijari.411601.

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The adsorption behaviour of Basic Red-12 on Vermiculite and has been investigated to understand the physicochemical process involved and to explore the potential use of low cost materials in textile effluent treatment and management. The adsorption process was found to be pH dependent and optimum pH obtained is 8.0. The equilibrium was established in 2 h. The process obeys Langmuir and Freundlich model. Scanning electron microscopic analysis reveals a conspicuous surface morphology of VC. The results of XRD and FTIR spectroscopy reveal that the process is electrostatic complexation mechanism d
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TÖZÜM AKGÜL, Seda, and Şehnaz Şule KAPLAN BEKAROĞLU. "Removal of Arsenic From Water With Low Cost and Environmentally-benign Adsorbents." Journal of the Institute of Science and Technology 12, no. 3 (2022): 1395–404. http://dx.doi.org/10.21597/jist.1081668.

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Arsenic, which is widespread in receiving environments through natural and anthropogenic sources, is one of the most important problems encountered in ground and surface waters in terms of public health in recent years due to its toxic and carcinogenic properties. In this study, the adsorptive removal of arsenic was investigated by using low cost and environmentally-benign adsorbents obtained from natural and waste materials. For this purpose, pumice was chosen as natural material, red mud and steel slag were chosen as waste material. The influence of contact time and adsorbent dosage was inve
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Liya, Merin Stanly, and Umesh Mridul. "Keratin as a sustainable biopolymer for waste water treatment." Research Journal of Chemistry and Environment 26, no. 9 (2022): 157–66. http://dx.doi.org/10.25303/2609rjce1570166.

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Keratin is one of the most abundant natural polymers with potential application in various fields but is usually seen discarded as waste generated from poultry farms along roadsides and landfills. These are indeed the cheapest source of keratin protein which could be used for various applications. Owing to the structural properties, keratinous materials are now being exploited in wastewater treatment systems as adsorbents. The rich amino acid content having hydroxyl, carboxyl and amino groups has been found to be beneficial in removing contaminants from waste waters like heavy metals and dyes.
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Aranda-Figueroa, Ma Guadalupe, Rosenberg J. Romero, Mario Rodríguez, et al. "Removal of Azo Dyes From Water on a Large Scale Using a Low-Cost and Eco-Friendly Adsorbent." Sustainability 17, no. 11 (2025): 4816. https://doi.org/10.3390/su17114816.

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The use of natural materials as adsorbents and the environmentally friendly removal of pollutants and azo dyes from water are important topics today. The goal of this research work was to assess the utility of Luffa cylindrica (L. cylindrica) as a natural and non-conventional adsorbent for azo dyes in water on a large scale (2 L). An azo dye (AD) at a concentration of 0.250 g/L was removed from the solution at a rate of 63.07% using 10.0 g/L doses of L. cylindrica, and the maximum adsorption capacity of L. cylindrica was 25.25 mg/g. L. cylindrica desorbed 95.8% of the AD in 0.1 M NaOH. Thermod
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40

Shabalala, Ayanda N., and Moses Basitere. "Interactive Relationship between Cementitious Materials and Acid Mine Drainage: Their Effects on Chromium Cr(VI) Removal." Minerals 10, no. 11 (2020): 932. http://dx.doi.org/10.3390/min10110932.

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Elevated hexavalent chromium (Cr(VI)) levels in pervious concrete may undermine its successful application in water treatment. Portland cement CEM I 52.5R (CEM I), coal fly ash (FA), natural zeolite and ground granulated blast-furnace slag (GGBS) were evaluated as adsorbents for removal of Cr(VI) from acid mine drainage (AMD). Adsorption experiments were conducted at dosages of 6, 10, 30 and 60 g of adsorbent in 200 mL of AMD, while the mixing contact time was varied from 15 to 300 min. It was found that the use of CEM1 and FA adsorbents strongly increased the Cr(VI) concentration in AMD. Conv
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Ishtiaq, Hira, Norheen Amina, Amina Irfan, Habiba Mohsin, and Ahsan Shahbaz. "REMOVAL OF FLUORIDE FROM DRINKING WATER THROUGH LOW-COST TECHNIQUES." Advances in Civil and Architectural Engineering 14, no. 26 (2023): 80–94. http://dx.doi.org/10.13167/2023.26.6.

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Fluoride ions (F-) from natural sources or industrial wastewater are the main cause of many pathological conditions in people living in more than 25 countries. Thus, removing F- from drinking water is pivotal for preventing serious health consequences. The WHO recommends a limit of 1,5 mg/L for fluoride in drinking. Excessive amounts of fluoride in drinking water are prevalent in Pakistan, leading to related health risks. Low-cost techniques for the defluoridation of drinking water can be used. In this study, the removal of fluoride from drinking water by an adsorption method using low-cost ma
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Dienullah, Muhammad, Hendry Sakke Tira, and Yesung Allo Padang. "PEMURNIAN BIOGAS DENGAN SISTEM BERLAPIS MENGGUNAKANN Fe2O3, ZEOLIT SINTETIK DAN ZEOLIT ALAM." POROS 15, no. 1 (2018): 1. http://dx.doi.org/10.24912/poros.v15i1.1249.

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Abstract: Biogas purification process aims to reduce biogas impurities such as carbon dioxide (CO2) and hydrogen sulfide (H2S) to obtain higher methane (CH4) concentration. Adsorption is one method for purifying biogas using solids. The research used 3 adsorbent materials such as natural zeolite mordenite, synthetic zeolite 3A and Fe2O3. To maximize the performance of natural zeolite as adsorbent, it is necessary to activate with NaOH solution which NaOH concentration used is 0%, 5%, and 15% NaOH and then they were activated by physical activation under heating treatment at 250oC for 4 hours.
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Dosa, Melodj, Nadia Grifasi, Camilla Galletti, Debora Fino, and Marco Piumetti. "Natural Zeolite Clinoptilolite Application in Wastewater Treatment: Methylene Blue, Zinc and Cadmium Abatement Tests and Kinetic Studies." Materials 15, no. 22 (2022): 8191. http://dx.doi.org/10.3390/ma15228191.

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In recent decades, several abatement techniques have been proposed for organic dyes and metal cations. In this scenario, adsorption is the most known and studied. Clinoptilolite was considered, since it is a zeolite with a relatively low cost (100–600 $ tons−1) compared to the most well-known adsorbent used in wastewater treatment. In this work, Clinoptilolite was used for the adsorption of Methylene Blue (MB) at three different concentrations, namely, 100, 200, and 250 ppm. Furthermore, the adsorption capacity of the natural zeolite was compared with that of Activated Charcoal (250 ppm of MB)
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Ibrahim Hamadamin, Shireen, Sewgil Saaduldeen Anwer, Kwestan Hassan Sdiq, and Parween Mohsin Abdulkareem. "Competence kinetic and thermodynamic studies between natural bio-adsorbent green microalgae and synthetic adsorbent magnetic nanoparticles for copper(II) ion in water." Bulletin of the Chemical Society of Ethiopia 37, no. 1 (2022): 183–95. http://dx.doi.org/10.4314/bcse.v37i1.15.

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ABSTRACT. The present work investigated the kinetic and thermodynamic study of adsorbents to remove copper ions from aqueous solutions and compared the efficiency between the natural microalgae bio-adsorbent chlorella species (sp.) and synthetic magnetic nanoparticles. All materials synthesized and characterized by Fourier transform infrared (FT-IR), scanning electron microscope (SEM), energy dispersive X-ray (EDX). The highest Cu+2 ion adsorption for the copper solution at 100 mg/L was 57.2%, while at pH 8 it was 59.7%. The more efficient adsorbent for Cu+2 acquired by chlorella was 0.24 mg/g
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Liu, Jifa, Ping Zhao, Yue Xu, and Xibin Jia. "Mg-Al Mixed Oxide Adsorbent Synthesized Using FCT Template for Fluoride Removal from Drinking Water." Bioinorganic Chemistry and Applications 2019 (July 7, 2019): 1–11. http://dx.doi.org/10.1155/2019/5840205.

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To make full use of natural waste, a novel Mg-Al mixed oxide adsorbent was synthesized by the dip-calcination method using the fluff of the chinar tree (FCT) and an Mg(II) and Al(III) chloride solution as raw materials. The adsorbents were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). The effects of the Mg/Al molar ratio and calcination temperature on the performance of the novel Mg-Al mixed oxide adsorbent were investigated. The optimized Mg-Al mixed oxide adsorbent had
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Padmaja, M., R. Bhavani, and R. Pamila. "Adsorption of Cadmium from Aqueous Solutions Using Low cost Materials-A Review." International Journal of Engineering & Technology 7, no. 4.2 (2018): 26. http://dx.doi.org/10.14419/ijet.v7i4.2.19995.

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With the onset of industrialization, a lot of anthropogenic sources of cadmium, including industrial emissions, application of fertilizers and sewage sludge to farm land has lead to the contamination of water bodies, and has increased cadmium uptake by agricultural crops, grown for human consumption. Cadmium when present, even at low concentrations may pose serious health as well as environmental hazards. The use of various materials has been widely investigated as a replacement of recent expensive methods for removing cadmium from water and wastewater. Plant based natural materials, agricultu
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Schwantes, Daniel, Affonso Celso Gonçalves Junior, Henrique Alipio Perina, et al. "Ecofriendly Biosorbents Produced from Cassava Solid Wastes: Sustainable Technology for the Removal of Cd2+, Pb2+, and Crtotal." Adsorption Science & Technology 2022 (March 9, 2022): 1–18. http://dx.doi.org/10.1155/2022/5935712.

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This research is aimed at investigating the possible use of cassava agroindustry solid wastes in manufacturing adsorbents and their use in removing heavy metals Cd2+, Pb2+, and Crtotal from water. Thus, a pilot study was conducted in two main steps: (1) obtaining and characterizing the adsorbents and (2) laboratory studies focused on the evaluation of critical physicochemical parameters on adsorption, such as pH of the solution containing heavy metals, the effect of adsorbent dose, besides kinetics and equilibrium adsorption and desorption studies. Three adsorbents were studied, cassava barks,
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A. Bezdeneznych, L., O. V. Kharlamova, and V. M. Shmandiy. "Composite Granulated Adsorbents Based on Chitosan and Agricultural Processing Waste for Sewage Treatment." International Journal of Engineering & Technology 7, no. 4.3 (2018): 320. http://dx.doi.org/10.14419/ijet.v7i4.3.19825.

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To minimize the impact of industrial enterprises on water objects, a wide variety of adsorbents (based on activated carbon, natural materials, nanomaterials, vegetable waste of agro-industrial complex, etc.) is used. Recently, chitin and chitosan have attracted the attention of scientists due to a number of unique physico-chemical and biological properties (adsorption, antioxidant, radioprotective, immunomodulating, lamina-forming). We have improved the method of obtaining powdered chitosan and established the basic physical and chemical parameters (bulk density, humidity). The method of obtai
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Wang, Zhe, Feng-Yu Huang, Yan Liu, et al. "Adsorption properties and mechanism of uranium by three biomass materials." Radiochimica Acta 110, no. 1 (2021): 23–35. http://dx.doi.org/10.1515/ract-2021-1078.

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Abstract Wood fibers, bamboo fibers and rice husk were applied to the adsorption of uranium from aqueous solution to understand the uranium adsorption behavior and mechanism by these natural sorbents. The effects of time, adsorbent particle size, pH, adsorbent dosage, temperature and initial concentration were studied using batch technique. The adsorption mechanism was discussed by isothermal adsorption models, adsorption kinetic models. The results suggested that the three biomass adsorbents showed great efficiency of adsorption for uranium. The adsorption capacity of biosorbents of comparati
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Bakouan, Corneille, Louise Chenoy, Boubié Guel, and Anne-Lise Hantson. "Physicochemical and Mineralogical Characterizations of Two Natural Laterites from Burkina Faso: Assessing Their Potential Usage as Adsorbent Materials." Minerals 15, no. 4 (2025): 379. https://doi.org/10.3390/min15040379.

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In the framework of lateritic material valorization, we demonstrated how the geological environment determines the mineralogical characterizations of two laterite samples, KN and LA. KN and LA originate from the Birimian and Precambrian environments, respectively. We showed that the geological criterion alone does not determine the applicability of these laterites as potential adsorbents but must be associated with their physicochemical properties. The characterizations were carried out using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Thermal analysis, and Atomic
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