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Journal articles on the topic 'Heavy metal Adsorption'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Huang, Sui Liang. "Adsorption of Cadmium Ions onto the Yellow River Sediment." Water Quality Research Journal 38, no. 2 (2003): 413–32. http://dx.doi.org/10.2166/wqrj.2003.026.

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Abstract Adsorption of cadmium ions onto Yellow River sediment was studied in a batch reactor. Equilibrium adsorption of cadmium ions onto Yellow River sediment can be well described by the Langmuir adsorption isotherm. In view of common experimental conditions in the batch reactor, a set of equations for describing variations of both the dissolved heavy metal pollutant concentration and the particulate heavy metal pollutant concentrations (the adsorption content of heavy metal pollutant on unit weight of sediment) with time was formulated with the use of an adsorptive reaction kinetic equatio

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2

Song, Guanling, Lijing Cao, Xiao Chen, Wenhua Hou, and Qunhui Wang. "Heavy metal adsorption changes of EAF steel slag after phosphorus adsorption." Water Science and Technology 65, no. 9 (2012): 1570–76. http://dx.doi.org/10.2166/wst.2012.048.

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A kind of electric arc furnace (EAF) steel slag was phosphated, and its isothermal and dynamic adsorptions of copper, cadmium, and lead ions were measured to determine if heavy metal adsorption changes after phosphorus adsorption. The surface area increased greatly after the slag was phosphated. Isothermal adsorption experiments showed that the theoretical Qmax of the EAF steel slag on Cu2+, Cd2+, and Pb2+ improved 59, 50, and 89% respectively after it was phosphated. Dynamic adsorption results showed that the greatest adsorption capacities of unit volume of Cu2+, Cd2+, and Pb2+ were 2.2, 1.8,

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3

Naseem, Khalida, Zahoor H. Farooqi, Muhammad Z. Ur Rehman, et al. "A systematic study for removal of heavy metals from aqueous media using Sorghum bicolor: an efficient biosorbent." Water Science and Technology 77, no. 10 (2018): 2355–68. http://dx.doi.org/10.2166/wst.2018.190.

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Abstract This review is based on the adsorption characteristics of sorghum (Sorghum bicolor) for removal of heavy metals from aqueous media. Different parameters like pH, temperature of the medium, sorghum concentration, sorghum particle size, contact time, stirring speed and heavy metal concentration control the adsorption efficiency of sorghum biomass for heavy metal ions. Sorghum biomass showed maximum efficiency for removal of heavy metal ions in the pH range of 5 to 6. It is an agricultural waste and is regarded as the cheapest biosorbent, having high adsorption capacity for heavy metals

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4

Wang, Jei-Pil, Urtnasan Erdenebold, and Hankwon Lim. "Study on Heavy Metal Removal Rates According to Lithium Content in Post-Use Induction Top Plate Comminuted Powder." International Journal of Membrane Science and Technology 10, no. 2 (2023): 3561–72. http://dx.doi.org/10.15379/ijmst.v10i2.3183.

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This study investigated the liquid-phase adsorption reactions of heavy metal ions (Pb, Cd, Cr6+, Hg) in wastewater using post-use Li2O-Al2O3-SiO2 crystalline glass derived from induction top plate materials. The heavy metal ion adsorption characteristics were compared using samples before and after the Li removal process in LAS sample. The amount of zeolite used as an adsorbent, adsorption time, concentration of heavy metal elements, and pH were examined for their effects on adsorption capacity. Lithium-removed zeolite demonstrated an average improvement of 30% in heavy metal adsorption abilit

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5

Li, Jiashi, Xiaoqiang Dong, Xiaofeng Liu, et al. "Comparative Study on the Adsorption Characteristics of Heavy Metal Ions by Activated Carbon and Selected Natural Adsorbents." Sustainability 14, no. 23 (2022): 15579. http://dx.doi.org/10.3390/su142315579.

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In this study, adsorption of the heavy metal ions (Pb(II), Cu(II) and Cd(II)) from water by peanut shells (PS), sawdust (S) and commercial activated carbon (AC) were comparatively studied. Thus, the relationship between different adsorption parameters and different heavy metal ion removal rates was investigated. The adsorption capacity of the three adsorbents for heavy metal ions increased with an increase in temperature, pH value, contact time, adsorbent dosage, and heavy metal ion concentration, however, it decreased with an increase of adsorbent particle size. All the adsorption processes a

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6

Li, Y. W., B. W. Zhao, L. Wang, et al. "Competitive Adsorption of Cd(II) and Zn(II) on Biochar, Loess, and Biochar-loess Mixture." Nature Environment and Pollution Technology 23, no. 1 (2024): 265–73. http://dx.doi.org/10.46488/nept.2024.v23i01.022.

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Combined heavy metal contamination in soil is a common phenomenon. Biochar amendment into the soil is considered to be an alternative for immobilization remediation of soil contaminated with heavy metals due to its adsorption and alkalization. However, much attention has been paid to the adsorption and immobilization of single heavy metals by biochar. In this paper, the competitive adsorption of Cd(II) and Zn(II) on biochar derived from cotton straw and pig manure at 500℃ (BCS500 and BPM500), loess and biochar-loess mixtures were investigated using the batch equilibrium method. The results sho

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Mingu, N., S. A. Aziz, E. Y. Stidi, M. H. A. Majid, J. Idris, and M. S. Sarjadi. "Study of Composition and Surface Morphology of Seaweed as Biosorbent: A Review." Journal of Physics: Conference Series 2314, no. 1 (2022): 012029. http://dx.doi.org/10.1088/1742-6596/2314/1/012029.

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Abstract Heavy metal contamination is harmful to living creatures and deteriorate environment. Adsorption of heavy metal by biomass as adsorbent been the best alternative for heavy metal removal. Despite abundance of biomass as biosorbent, approach on adsorption by seaweed been studied because of its prominence benefits such as accessibility, minimal cost and ease of use. Some metal can be accumulated by seaweed without causing any hazardous by product. Thus, sorption of heavy metal by seaweed as biosorbent is studied. In this article, relationship between adsorption of heavy metal ions with c

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8

L, Sirajo, Musa L., and Ndanusa I. A. "DETERMINATION OF ADSORPTION KINETICS OF COCONUT HUSK ADSORBENT FOR HEAVY METALS REMOVAL USING LANGMUIR AND FREUNDLICH ISOTHERM EXPRESSIONS." International Journal of Research -GRANTHAALAYAH 6, no. 10 (2018): 87–94. http://dx.doi.org/10.29121/granthaalayah.v6.i10.2018.1165.

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Adsorption of heavy metal cationic ions (Cr, Pb, and Cu) onto coconut husk carbon (CHC) adsorbent has been studied using batch-adsorption method. The study was carried out to investigate the adsorption kinetic and adsorption isotherm of the coconut husk adsorbent for the removal of heavy metals in waste liquid effluent. The influence of pH, contact time, adsorbent dose, and adsorbent concentration, and temperature on the adsorption process was also studied. Results indicated an initial increase in adsorption rate, and optimal removal of heavy metal was reached within 70 minutes, further increa

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9

Yang, Dong-qing, Jun-wen Chen, Peng Lu, Song Li, Yapeng Song, and Hongyu Yue. "Study on the Treatment of Heavy Metal Ions in COD Detection Waste Liquid by Molecular Sieve." Applied and Computational Engineering 136, no. 1 (2025): 46–51. https://doi.org/10.54254/2755-2721/2025.20988.

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By studying the removal effect of different pore size molecular sieves on heavy metal Ag+ in COD detection waste liquid, molecular sieves with excellent adsorption performance for heavy metal ions were screened. The removal rate of Ag+ can reach over 60%. By studying the structural changes of molecular sieves before and after adsorption and desorption of heavy metal ions, exploring the principles of molecular sieve adsorption and desorption, the method for the recycling and utilization of heavy metal ions and molecular sieves was established.

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10

F.V. Yusubov, S.R. Namazova, F. V. Yusubov, S. R. Namazova. "FEATURES OF ADSORPTION OF HEAVY METAL IONS Pb2+, Cd2+ AND Zn2+ FROM WASTEWATER IN ENVIRONMENTAL PROTECTION." PAHTEI-Procedings of Azerbaijan High Technical Educational Institutions 148, no. 02-02 (2024): 430–37. https://doi.org/10.36962/pahtei14802-022024-430.

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Research work is devoted to studying the adsorption properties of heavy metal ions Pb 2+ , Cd 2+ and Zn 2+ in industrial wastewater. Natural clinoptilolite was used to adsorb heavy metal ions. Clinoptilolite belongs to the Ai-Dag deposit of Azerbaijan. The isotherm and kinetic curves of adsorption of heavy metal ions Pb 2+ , Cd 2+ and Zn 2+ were determined . The dependence of the adsorption of heavy metal ions on the pH value is also shown. It was revealed that the separation process occurs more intensely at pH values of 6,5-7. It was determined that the maximum adsorp-tion equilibrium is achi

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11

V.F. Rzayeva, Ş.Z. Göyüşov, V. F. Rzayeva, Ş. Z. Göyüşov. "BƏRPA OLUNAN ENERJİ – DAHA TƏHLÜKƏSİZ GƏLƏCƏYƏ GÜC VERİR." PAHTEI-Procedings of Azerbaijan High Technical Educational Institutions 148, no. 02-02 (2024): 438–47. https://doi.org/10.36962/pahtei14802-022024-438.

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Research work is devoted to studying the adsorption properties of heavy metal ions Pb 2+ , Cd 2+ and Zn 2+ in industrial wastewater. Natural clinoptilolite was used to adsorb heavy metal ions. Clinoptilolite belongs to the Ai-Dag deposit of Azerbaijan. The isotherm and kinetic curves of adsorption of heavy metal ions Pb 2+ , Cd 2+ and Zn 2+ were determined . The dependence of the adsorption of heavy metal ions on the pH value is also shown. It was revealed that the separation process occurs more intensely at pH values of 6,5-7. It was determined that the maximum adsorp-tion equilibrium is achi

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12

Li, Qi, and Yanan Li. "Adsorption Features of Loess Calcareous Nodules to Heavy-Metal Ions in Aqueous Solution." Coatings 11, no. 11 (2021): 1314. http://dx.doi.org/10.3390/coatings11111314.

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This paper explores the use of calcareous tuberculosis as an adsorbent and heavy-metal ions (Cu2+, Zn2+, Cd2+, and Pb2+) as adsorbates, and the influence of varying levels of particle size, adsorption time, pH, adsorbent dosage, and initial concentration of heavy metals is studied through an experiment of single heavy-metal adsorption. In addition, the impact of the temperature and other factors on the adsorption of heavy-metal ions by calcareous nodules is analyzed to identify the optimal conditions for the adsorption of heavy-metal ions by calcareous nodules. As shown by the research finding

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13

Solihin, Khoirul Ihsan, St Mardiana, Handajaya Rusli, and Grandprix Thomryes Marth Kadja. "Removal of Heavy Metal Ions Using Pristine and Functionalized Natural Zeolites." Indonesian Journal of Chemistry 23, no. 3 (2023): 863. http://dx.doi.org/10.22146/ijc.81098.

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Heavy metal ions have attracted significant concern regarding their toxicity in living organisms. Concurrently, the removal of heavy metals by the adsorption method is also under the spotlight because it is effective, less cost-demanding, and easy to operate. To date, natural zeolites become one of the most used adsorbents for it is low cost, abundant in reserve, and has high selectivity towards heavy metal. Zeolites possess negatively charged three-dimensional frameworks built by SiO4 and AlO4 tetrahedra, which are balanced by counter-cations. The cations within zeolite frameworks can be exch

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14

Munirah Muhaidin, Fatin Hana Naning, Juniza Md Saad, Rafeah Wahi, and Tasiu Zangina. "Heavy Metal Ion Adsorbent in Aqueous Solution: A Review on Chitosan and Chitosan Composites." Journal of Advanced Research in Micro and Nano Engieering 18, no. 1 (2024): 78–102. http://dx.doi.org/10.37934/armne.18.1.78102.

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One prominent contributor to environmental degradation is the presence of heavy metal ions, which are commonly introduced into ecosystems through diverse channels, including mining operations, paint manufacturing, battery production, and agricultural practises. The unprocessed waste from these industries typically undergoes direct discharge into rivers and seas, thereby adversely influencing the potable water supply and marine ecosystem. This results in the accumulation of heavy metals within living organisms and subsequent environmental degradation that poses a significant risk to human healt

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15

Sirajo, L., L. Musa, and I. A. Ndanusa. "DETERMINATION OF ADSORPTION KINETICS OF COCONUT HUSK ADSORBENT FOR HEAVY METALS REMOVAL USING LANGMUIR AND FREUNDLICH ISOTHERM EXPRESSIONS." International Journal of Research - Granthaalayah 6, no. 10 (2018): 87–94. https://doi.org/10.5281/zenodo.1475405.

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Adsorption of heavy metal cationic ions (Cr, Pb, and Cu) onto coconut husk carbon (CHC) adsorbent has been studied using batch-adsorption method. The study was carried out to investigate the adsorption kinetic and adsorption isotherm of the coconut husk adsorbent for the removal of heavy metals in waste liquid effluent. The influence of pH, contact time, adsorbent dose, and adsorbent concentration, and temperature on the adsorption process was also studied. Results indicated an initial increase in adsorption rate, and optimal removal of heavy metal was reached within 70 minutes, further increa

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16

Baby, Rabia, Mohd Hussein, Zulkarnain Zainal, and Abdul Abdullah. "Functionalized Activated Carbon Derived from Palm Kernel Shells for the Treatment of Simulated Heavy Metal-Contaminated Water." Nanomaterials 11, no. 11 (2021): 3133. http://dx.doi.org/10.3390/nano11113133.

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Heavy metal contamination in water poses a great risk to human health as well as to the lives of other creatures. Activated carbon is a useful material to be applied for the treatment of heavy metal-contaminated water. In this study, functionalized activated carbon (FAC) was produced by the induction of nitro groups onto activated carbon using nitric acid. The resulting material was characterized in detail using the XRD, Raman, BET, FTIR, and FESEM techniques. The FAC was used for the treatment of heavy metal-contaminated water using different adsorption parameters, i.e., solution pH, contact

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17

Czikkely, Marton, Eva Neubauer, Ilona Fekete, Prespa Ymeri, and Csaba Fogarassy. "Review of Heavy Metal Adsorption Processes by Several Organic Matters from Wastewaters." Water 10, no. 10 (2018): 1377. http://dx.doi.org/10.3390/w10101377.

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Heavy metal contamination of natural rivers and wastewaters is a problem for both the environment and human society. The accumulation and adsorption of heavy metals could happen with several organic and inorganic matters, but the most used adsorbents are (biological and chemical) organic compounds. This review article presents the basics of heavy metal adsorption on several organic surfaces. There are many organic matters, which seem to be useful as agents for heavy metal adsorption. All of the cited authors and articles present the adsorption kinetics by the most used isotherm models (such as

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18

Mohammed, Y., M. D. Faruruwa, Aminu Muhammad, and A. S. Haruna. "Kinetics and Thermodynamics of Heavy Metal Adsorption using Activated Carbon Developed from Doum Palm Seeds." Journal of Basics and Applied Sciences Research 2, no. 1 (2024): 177–94. http://dx.doi.org/10.33003/jobasr-2024-v2i1-44.

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The increase in human population which prompted the need for the construction of industries has led to indiscriminate discharge of industrial effluent by these industries into our environment. This discharges most times contain heavy metal which adversely affected the ecosystem. This research evaluates the adsorption behaviour of activated carbon prepared from Hyphaenethebaica nut shells treated with K2CO3 for the treatment of heavy metal contaminated water. The characterization was carried out using FTIR and SEM. The batch adsorption technique was employed and the optimum adsorption was obser

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19

Wang, Jei-Pil, and Tserendejid Bayarmaa. "Study on Heavy Metal Adsorption Capacity According to Modification Conditions with Ca-Zeolite." International Journal of Membrane Science and Technology 10, no. 3 (2023): 3160–72. http://dx.doi.org/10.15379/ijmst.v10i3.3141.

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This study investigated the liquid-phase adsorption reactions of heavy metal ions (Pb, Cd, Cr6+, Hg) in wastewater using post-use Li2O-Al2O3-SiO2 crystalline glass derived from induction top plate materials in which Li had been removed through a sulfuric acid heat reaction. Two types of zeolites, before and after Ca2+ modification, were used for heavy metal adsorption. The amount of zeolite used as an adsorbent, adsorption time, concentration of heavy metal elements, and pH were examined for their effects on adsorption capacity. Ca-zeolite showed an average adsorption removal rate improvement

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20

Asha, Singh, and Kumar Sunil. "Application of Aquatic Plants Dead Biomass in Remediation of Heavy Metals Pollution by Adsorption: A Review." Indian Journal of Science and Technology 15, no. 16 (2022): 729–35. https://doi.org/10.17485/IJST/v15i16.82.

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Abstract <strong>Objectives:</strong> To figure out the sources of heavy metals pollution in water bodies, their toxicity, and utilization of aquatic plants’ dead biomass as adsorbents for heavy metals removal. In addition, this review also explains the adsorption mechanism through adsorption isotherms and kinetics. <strong>Methods:</strong> Various research papers related to aquatic plant adsorbents from various sources have been compiled to assess the adsorption capacity of heavy metals from synthetic solutions as well as from the wastewater. <strong>Findings:</stro

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21

Wang, Jei-Pil, and Chimeddorj Ganzorig. "Study on Heavy Metal Adsorption Capacity According to Modification Conditions with K-Zeolite." International Journal of Membrane Science and Technology 10, no. 3 (2023): 3173–85. http://dx.doi.org/10.15379/ijmst.v10i3.3142.

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In this study, synthetic zeolites were prepared using a sample obtained by removing Li from used LAS (Li2O-Al2O3-SiO2) crystallized glass, which is a material for induction top plates, through a sulfuric acid heat reaction. The removal experiment of heavy metals (Pb, Cd, Cr6+, Hg) ions present in wastewater was conducted. Two types of zeolites were used for heavy metal adsorption: before and after K+ modification. The changes in the amount of heavy metal adsorption were investigated depending on the adsorption reaction conditions, such as the amount of zeolite used as an adsorbent, adsorption

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22

Li, Chonghua. "Study on Adsorption Properties of New Sodium Alginate and Chitosan Quaternary Ammonium Salt for Heavy Metal Ions." Advances in Engineering Technology Research 10, no. 1 (2024): 602. http://dx.doi.org/10.56028/aetr.10.1.602.2024.

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Up against accelerating industrialization, heavy metal pollution has been a global environmental problem. Hence, it is urgent to develop high-efficiency, low-cost and environmentally friendly heavy metal adsorption materials. This study aims to explore sodium alginate and chitosan quaternary ammonium salt (Alg/HTACC), a new biosorption material, and evaluate its adsorbability for heavy metal ions. Alg/HTACC is prepared by solution mixing, with its structure and morphology characterized by Fourier transform infrared spectroscopy and X-ray diffraction. Alg/HTACC is porous in structure, which is

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23

Zhang, Yuzhe, Bin Wang, Qian Cheng, Xinling Li, and Zhongyu Li. "Removal of Toxic Heavy Metal Ions (Pb, Cr, Cu, Ni, Zn, Co, Hg, and Cd) from Waste Batteries or Lithium Cells Using Nanosized Metal Oxides: A Review." Journal of Nanoscience and Nanotechnology 20, no. 12 (2020): 7231–54. http://dx.doi.org/10.1166/jnn.2020.18748.

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How to remove harmful heavy metal ions from waste batteries or lithium cells efficiently has been the focus of scholars. More and more metal oxides had been used to deal with the pollution of heavy metal caused by waste batteries in recent years. Nanostructured metal oxides have great potential because of their large comparative areas. The adsorption for these heavy metal ions can be further improved by using modified metal oxides as adsorbents. At present, iron oxide is widely used in this field. Other metal oxides have also been studied in removing these heavy metal ions. Compared to other m

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24

Guo, Xue Yi, Sha Liang, and Qing Hua Tian. "Removal of Heavy Metal Ions from Aqueous Solutions by Adsorption Using Modified Orange Peel as Adsorbent." Advanced Materials Research 236-238 (May 2011): 237–40. http://dx.doi.org/10.4028/www.scientific.net/amr.236-238.237.

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In this study, orange peel (OP) was modified by KCl to prepare a novel orange peel adsorbent named as KOP. The adsorption behaviors of KOP for five heavy metals (Cu2+, Cd2+, Pb2+, Zn2+, Ni2+) were studied. The effects of pH, adsorption time and metal ion concentration on single heavy metal solution adsorption by KOP were investigated. All adsorption processes can attain equilibrium with 20min and kinetics data of five heavy metal ions were fitted to pseudo-second-equation; the maximum adsorption capacities for Cu2+, Cd2+, Pb2+, Zn2+and Ni2+were calculated as 59.77, 125.63, 141.84, 45.29 and 49

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25

Zheng, Liwen, Yongchao Gao, Jianhua Du, et al. "Single and Binary Adsorption Behaviour and Mechanisms of Cd2+, Cu2+ and Ni2+ onto Modified Biochar in Aqueous Solutions." Processes 9, no. 10 (2021): 1829. http://dx.doi.org/10.3390/pr9101829.

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The chitosan–EDTA modified magnetic biochar (E–CMBC) was successfully used as a novel adsorbent to remove heavy metals. The adsorption behaviour and mechanisms of E–CMBC to Cd2+, Cu2+ and Ni2+ were performed in single and binary system in aqueous solutions. In single–metal system, the adsorption process of Cd2+, Cu2+ and Ni2+ on E–CMBC fitted well with the Avrami fractional–order kinetics model and the Langmuir isotherm model. The measured maximum adsorption capacities were 61.08 mg g−1, 48.36 mg g−1 and 41.17 mg g−1 for Cd2+, Cu2+ and Ni2+, respectively. In binary–metal system, coexisting ion

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26

Weißpflog, Janek, Alexander Gündel, David Vehlow, et al. "Solubility and Selectivity Effects of the Anion on the Adsorption of Different Heavy Metal Ions onto Chitosan." Molecules 25, no. 11 (2020): 2482. http://dx.doi.org/10.3390/molecules25112482.

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The biopolymer chitosan is a very efficient adsorber material for the removal of heavy metal ions from aqueous solutions. Due to the solubility properties of chitosan it can be used as both a liquid adsorber and a solid flocculant for water treatment reaching outstanding adsorption capacities for a number of heavy metal ions. However, the type of anion corresponding to the investigated heavy metal ions has a strong influence on the adsorption capacity and sorption mechanism on chitosan. In this work, the adsorption capacity of the heavy metal ions manganese, iron, cobalt, nickel, copper, and z

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27

Wang, Keming, Chengli Wang, Wenbing Jin, and Liuming Qi. "Detection and remediation of heavy metal pollution in seawater using instrumentation and nanomaterials." Materials Express 13, no. 9 (2023): 1597–604. http://dx.doi.org/10.1166/mex.2023.2499.

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This study explores methodologies for removing heavy metal elements such as nickel (Ni), copper (Cu), cadmium (Cd), and lead (Pb) from diverse aquatic environments, including rivers, lakes, and oceans. Nanosized montmorillonite (MON) was used as the raw material and was subjected to organic chemical modification through silanization using cetyltrimethylammonium bromide and grafting of amino groups to produce amino-functionalized nanomontmorillonite composite (NH2-MON). The removal effectiveness of NH2-MON on heavy metal elements in water bodies was evaluated. Experiments involving adsorption w

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Xu, Xiaojiang, Junling Zeng, Yue Wu, Qiaoying Wang, Shengchao Wu, and Hongbo Gu. "Preparation and Application of Graphene–Based Materials for Heavy Metal Removal in Tobacco Industry: A Review." Separations 9, no. 12 (2022): 401. http://dx.doi.org/10.3390/separations9120401.

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Heavy metals are nondegradable in the natural environment and harmful to the ecological system and human beings, causing an increased environmental pollution problem. It is required to remove heavy metals from wastewater urgently. Up until now, various methods have been involved in the heavy metal removals, such as chemical precipitation, chemical reduction, electrochemical, membrane separation, ion exchange, biological, and adsorption methods. Among them, adsorption by graphene–based materials has attracted much more attentions for the removal of heavy metals from wastewater systems in recent

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Naveed, Ahmad, Najaf Ali, Muhammad Ashraf, and Hafiz Miqdad Masood. "Removal of Heavy Metals from Wastewater of Textile Industry Using Polymeric Nano-Adsorbent." NFC IEFR Journal of Engineering and Scientific Research 7, no. 1 (2019): 10–18. http://dx.doi.org/10.24081/nijesr.2019.1.0003.

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Wastewater of textile industry having impurities and heavy metal ions cause problems in human society that can endanger the human health through food chain. Adsorption of heavy metal ions before draining makes wastewater safe for aquatic life and human health. Now a day’s adsorption of heavy metal through polymeric nano adsorbents is the emerging technology which is more efficient than conventional adsorbents like activated carbon. The pH 9.0 gave maximum 96% sorption of Co at 1.0 g/L adsorbent dosage, due to increased electrostatic force of attraction produced by the negative charge at the su

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Sun, Jian, Ziqi Jin, Jiyang Wang, et al. "Application of Ionic Liquid Crosslinked Hydrogel for Removing Heavy Metal Ions from Water: Different Concentration Ranges with Different Adsorption Mechanisms." Polymers 15, no. 13 (2023): 2784. http://dx.doi.org/10.3390/polym15132784.

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Heavy metal wastewater poses a significant environmental challenge due to its harmful effect on organisms and difficult biodegradation. To address this issue, hydrogel has been used as a promising solution for the adsorption of heavy metal ions in water, offering advantages such as low cost, simple design, and environmental friendliness. In this study, we synthetized a novel poly-acrylamide/acrylic acid/vinyl imidazole bromide (PAM/AA/[Vim]Br2) hydrogel as an effective adsorbent for the removal of NiII, CuII, ZnII, and CrIII from water. The structure of the hydrogel was characterized by using

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Susanto Barus, Beta, Anna Ida Sunaryo Purwiyanto, and Yulianto Suteja. "Microplastic and heavy metal interactions (adsorption and desorption) at different salinities." BIO Web of Conferences 74 (2023): 05004. http://dx.doi.org/10.1051/bioconf/20237405004.

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Heavy metals and microplastics (MPs) are two pollutants that are currently gaining a lot of attention, and it has been observed that they can interact. The objective of this research was to observe the adsorption and desorption of heavy metals concerning various types of MP particles, different heavy metals and concentrations, and salinity. The findings demonstrate that among all particle types, PP particles absorb heavy metals at the highest rate. Contrarily, PP particles release lower heavy metals and more slowly than other particles. Pb consistently absorbed more metal by MPs than Cu, Zn, o

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Chen, Peng, and Peng Hua Cao. "The Residue of Heavy Metals in Lobster Sauce and the Shallow Analysis of Occurred Mechanism." Advanced Materials Research 518-523 (May 2012): 2267–73. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.2267.

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Using thiol-activated-carbon adsorption heavy metal (Cd) in lobster sauce were studied.The content of Cd in lobster sauce from the different manufacturers are detected in the appropriate adsorption conditions and analytical conditions, while on the mechanism of heavy metals in lobster sauce were analyzed. The results show that: the thiol-activated-carbon adsorption of heavy metals in the lobster sauce has a good effect on adsorption and desorption .At the same time ,it is to be found that the content of heavy metal (Cd) after using this method to dispose the samples is higher than the national

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Raji, Zarifeh, Ahasanul Karim, Antoine Karam, and Seddik Khalloufi. "Adsorption of Heavy Metals: Mechanisms, Kinetics, and Applications of Various Adsorbents in Wastewater Remediation—A Review." Waste 1, no. 3 (2023): 775–805. http://dx.doi.org/10.3390/waste1030046.

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Heavy metal contamination in wastewater is a significant concern for human health and the environment, prompting increased efforts to develop efficient and sustainable removal methods. Despite significant efforts in the last few decades, further research initiatives remain vital to comprehensively address the long-term performance and practical scalability of various adsorption methods and adsorbents for heavy metal remediation. This article aims to provide an overview of the mechanisms, kinetics, and applications of diverse adsorbents in remediating heavy metal-contaminated effluents. Physica

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Dong, Guo Ri, and Yan Zhang. "Diatomite Modification and its Adsorption of Heavy Metal Ions." Advanced Materials Research 864-867 (December 2013): 664–67. http://dx.doi.org/10.4028/www.scientific.net/amr.864-867.664.

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Diatomite plays a very important role in sewage adsorption and especially has vast prospect in adsorbing heavy metal ions. The paper, on the basis of domestic and overseas literatures concerning diatomite, summarizes the modification methods of diatomite and adsorption research of heavy metal ions. Besides, it also forecasts the prospect of using diatomite to specifically adsorb heavy metal ion.

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Liyanage, Malithi. "Heavy metal adsorption to tea waste." Bolgoda Plains 2, no. 1 (2022): 10–13. http://dx.doi.org/10.31705/bprm.v2(1).2022.2.

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When the cool morning breeze seeps through the window, sipping a warm cup of tea breathes life into your body and heart. Yet, the tea dregs that remain are a mere afterthought miserably lying at the bottom of a waste basket. However, the dregs that we consider waste can be used to address a significant problem in the country—heavy metal contamination.

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Celis, Rafael, M. Carmen HermosÍn, and Juan Cornejo. "Heavy Metal Adsorption by Functionalized Clays." Environmental Science & Technology 34, no. 21 (2000): 4593–99. http://dx.doi.org/10.1021/es000013c.

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Jiang, Wei, Ying Hu, and Zhenyuan Zhu. "Biosorption Characteristic and Cytoprotective Effect of Pb2+, Cu2+ and Cd2+ by a Novel Polysaccharide from Zingiber strioatum." Molecules 27, no. 22 (2022): 8036. http://dx.doi.org/10.3390/molecules27228036.

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The pollution of heavy metal ions can cause damage to the human body through food, so developing a new biocompatible material that can remove the damage of heavy metal ions has a good application prospect. In this study, we obtained a new homogeneous polysaccharide composed of seven monosaccharides from Zingiber strioatum by using the method of separation and purification of polysaccharide. The results of adsorption behavior showed that the concentration, temperature and pH value could affect the adsorption effect of Zingiber strioatum polysaccharide (ZSP). Through model fitting of the data of

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Xie, Jian Jun, Na Li, Kai Huang, and Xin Qiang Han. "Adsorption Properties for Superabsorbent of Inverse Suspension Polymerization Poly(acrylate-Co-Acrylamide)." Advanced Materials Research 239-242 (May 2011): 851–54. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.851.

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Superabsorbent polymers are lightly crosslinked, hydrophilic polymer network having many functional groups. The adsorption properties in heavy metal ion solutions using poly(acrylate-co-acrylamide)(PAAM) are investigated. It is found that PAAM has a high uptake to heavy metal ions, and that the adsorption of heavy metal ions is greatly influenced by pH and the initial solution concentrations. The biggest and the smallest amount of adsorption are Cu2+and Cr3+in CuCl2and CrCl3solution, respectively. It was feasible for selective adsorption of the metal ions in the solution onto PAAM hydrogel by

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Liu, Chuan-Wen, Min-Hsien Liu, To-Mai Wang, and Cheng-Lung Chen. "Study of the metal ion adsorption capacity of palygorskite by computer simulation." Journal of the Serbian Chemical Society, no. 00 (2023): 82. http://dx.doi.org/10.2298/jsc230708082l.

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Palygorskite is a magnesium-rich aluminosilicate clay mineral with a unique chain-layered structure. This structure gives palygorskite a large specific surface area and interesting physical properties. Many researchers have investigated the applications of palygorskite in various fields, including heavy metal adsorption, petroleum and chemical industries, building materials, medicine, and agriculture. In this study, molecular dynamics simulations were used to explore the heavy metal adsorption ability of palygorskite. The results showed that polyacrylic acid (PAA) had a heavy metal adsorption

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Cheung, Sinming, Yalin Cao, and Quansheng Jiang. "Study on Removal of Heavy Metal Pollution from Water by Biochar and Its Composite Materials." Highlights in Science, Engineering and Technology 40 (March 29, 2023): 227–32. http://dx.doi.org/10.54097/hset.v40i.6634.

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Heavy metal pollution is a long-term pollution problem that is difficult to control. Water microorganisms cannot directly degrade heavy metals, and heavy metals can produce mutual transformation, dispersion and enrichment in various forms in water. Adsorption is the most effective techniques to remove harmful heavy metals from water. Biochar (BC) and its composite materials, because of their simple and abundant source, abundant pore structure and unique surface chemical properties, are a new type of efficient adsorption material. Their technical development offers a new idea for solving the he

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Tao, Jin, Ying Zhu, Tao Huang, Jishu Zhang, Jianbing Wu, and Leigen Liu. "Fe₃O₄/SiO₂/polymer hybrid biosorbent based on an etch-fill strategy for heavy metal ion adsorption." Journal of Industrial Textiles 53 (January 2023): 152808372211462. http://dx.doi.org/10.1177/15280837221146292.

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Heavy metal contamination is a serious concern worldwide. In order to remove heavy metal ions from wastewater efficiently, multifunctinoal biomass-based material have been utilized. Herein, hyperbranched polymer modified cellulose biomass (HBP-CB) derived from textile waste materials ramie fibers was successfully developed by construction of Fe3O4/SiO2/polymer multiple structure through an etch-fill strategy. Specifically, Fe3O4 and SiO2 particles were introduced to the oxidation etching cellulose surface, and subsequently modified by hyperbranched polymer The adsorption behavior of the adsorb

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Zhang, Lulu, and Chao Guo. "Research Progress on the Adsorption Effect of Cellulose-based Modified Materials on Heavy Metals." Scientific Journal of Technology 4, no. 6 (2022): 22–25. http://dx.doi.org/10.54691/sjt.v4i6.877.

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Heavy metal pollution, as an increasingly concerned environmental issue, has attracted social attention for its causes and effects. At present, heavy metals enter soil/water bodies mainly through man-made factors such as mining, metal smelting, application of pesticides and fertilizers, and natural factors such as geological erosion and weathering. Heavy metals have the characteristics of high toxicity, non-degradation, and easy bioaccumulation, which seriously threaten the survival and safety of human beings. At present, people's research on the treatment of heavy metal ions is more in-depth,

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Wei, Qun, Haijian Sun, Haoqi Qi, Conghan Wang, Gairen Yang, and Xiangmeng Ma. "Enhancement of Tetradesmus obliquus Adsorption for Heavy Metals Through Lysine Addition: Optimization and Competitive Study." Water 17, no. 7 (2025): 935. https://doi.org/10.3390/w17070935.

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Heavy metal wastewater often contains multiple metal ions, and competition among them reduces the adsorption efficiency of microalgae. Enhancing this efficiency is crucial for improving heavy metal removal. This study optimized lysine addition to facilitating the formation of a ternary complex between microalgae, lysine, and heavy metals, thereby enhancing adsorption in both single- and mixed-metal systems. In a single-metal system at 64 mg/L, lysine improved the removal rates of copper, zinc, and cadmium by 13.96%, 41.21%, and 33.26%, respectively. In binary systems (Cu-Zn, Cu-Cd, and Cu-Pb)

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Maranescu, Bianca, Lavinia Lupa, and Aurelia Visa. "Heavy metal removal from waste waters by phosphonate metal organic frameworks." Pure and Applied Chemistry 90, no. 1 (2018): 35–47. http://dx.doi.org/10.1515/pac-2017-0307.

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AbstractThe increase attention in the area of phosphonate metal organic framework is exemplified with a variety of applications and a rich chemistry of these compounds. Water pollution caused by heavy metal ions is a major concern due to their toxicity to many life forms. In order to decrease the heavy metals impact upon the environment various technologies of water treatment such as: chemical sedimentation, ion exchange, redox process are studied. The tendency is to find a versatile and economical method of heavy metals removal from waste waters. Phosphonate metal organic frameworks were obta

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Al-Asheh, Sameer, Fawzi Banat, and Dheaya‘ Al-Rousan. "Adsorption of Copper, Zinc and Nickel Ions from Single and Binary Metal Ion Mixtures on to Chicken Feathers." Adsorption Science & Technology 20, no. 9 (2002): 849–64. http://dx.doi.org/10.1260/02636170260555778.

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Certain industries often produce mixtures of heavy metal ions in their waste products. Because of the nature of heavy metal ions and the adsorption process, such metal ions can compete with each other for the sorption sites on an adsorbent during adsorption processes. In the present work, binary systems composed of copper, zinc and nickel ions were selected as examples of heavy metal ion mixtures and tested via batch adsorption processes using chicken feathers as an adsorbent. The uptake of individual metal ions was depressed by the presence of another. Thus, the uptake of copper ions from an

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Rajakaruna, R. M. A. S. Dhananjana, B. G. N. Sewwandi, Mohamed M. M. Najim, Mirza Barjees Baig, Bader Alhafi Alotaibi, and Abou Traore. "Sustainable Approaches for Wastewater Treatment: An Analysis of Sludge-Based Materials for Heavy Metal Removal from Wastewater by Adsorption." Sustainability 15, no. 20 (2023): 14937. http://dx.doi.org/10.3390/su152014937.

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A comprehensive study incorporating results from different findings related to heavy metal removals from wastewater using sludge as an absorbent will assist researchers and practitioners in planning wastewater treatment processes. This study aims to provide a comprehensive foundation on the potential of using sludge-based materials to remove heavy metals from wastewater based on recent studies. The physicochemical properties of sludge and the nature of metal ions have significantly contributed to the adsorption of heavy metals into sludge-based materials. Many researchers found the effects of

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Kuldeyev, Erzhan, Makpal Seitzhanova, Sandugash Tanirbergenova, et al. "Modifying Natural Zeolites to Improve Heavy Metal Adsorption." Water 15, no. 12 (2023): 2215. http://dx.doi.org/10.3390/w15122215.

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Problems with increasing heavy metal contents in natural waters are becoming a global issue. At the same time, improved methods for water treatment are becoming increasingly important. In this context, natural zeolites can be used to purify polluted water. In this paper, we investigated how the adsorption capacity of natural zeolites can be improved. Natural zeolites from the Shankanay district, Almaty, Kazakhstan, were used as adsorbent material for experiments on improving the water treatment of heavy metals. We found that the adsorption capacity for heavy metals was increased greatly by the

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Esrafili, Leili, Vahid Safarifard, Elham Tahmasebi, M. D. Esrafili, and Ali Morsali. "Functional group effect of isoreticular metal–organic frameworks on heavy metal ion adsorption." New Journal of Chemistry 42, no. 11 (2018): 8864–73. http://dx.doi.org/10.1039/c8nj01150h.

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Chen, Feng, Xiu Lian Zhu, and Wei Yu. "The Transformation of Heavy Metal Be in Activated Sludge Process." Applied Mechanics and Materials 178-181 (May 2012): 633–36. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.633.

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Municipalsludge is refers to the product of sewage treatment plant, facing the huge number of municipalsludge, the disposal of the municipalsludge has aroused wide attention of all countries. Many studies consider that urban land use of the municipalsludge is the most effective method, However heavy metal accumulats in the sludge and the environment of the risk with agricultural appears day after day.The purpose of this study is: analysis the transfermation of heavy metals in the activated sludge system of various structures. put forward the solution of reducing heavy metal exceeded in the act

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Liang, Yuting, Zhengwei Han, Qiang Zeng, et al. "Effective Removal of Pb2+ from Aqueous Solution Using Magnetic Mesoporous Silica Prepared by Rubidium-Containing Biotite Leaching Residues and Wastewater." Water 14, no. 17 (2022): 2652. http://dx.doi.org/10.3390/w14172652.

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The rubidium leaching process from biotite generates a large amount of waste materials that should ideally be reused for heavy metal ion adsorption so as not to create environmental problems. Ferric oxide/mesoporous silica (FO/MS) is a novel adsorbent used for heavy metal ion removal with a high removal capacity of Pb2+ (143.47 mg/g within 60 min) that was prepared for the first time by comprehensively utilizing both rubidium-containing biotite leaching residues and wastewater. The incorporation of mesoporous silica prepared by leaching residues could provide a porous framework and channel for

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