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Journal articles on the topic 'Adsorption of Cadmium'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Chansuvarn, Woravith, Yuttapoom Pandee, Ariya Saechim, and Kritsana Habunmee. "Adsorption of Cadmium(II) Ion from Aqueous Solution onto a Raw Material of Bamboo Powder and its Surface Modification." Applied Mechanics and Materials 879 (March 2018): 131–36. http://dx.doi.org/10.4028/www.scientific.net/amm.879.131.

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This work was focused on evaluating the potential of bamboo powder modified with manganese oxide (MnO-BP) as a low-cost byproduct adsorbent for the adsorption of cadmium(II) ion. A batch method was carried out at room temperature and the optimized conditions. The optimization of adsorption parameters including pH, equilibrium time, dosage and initial Cd(II) concentration was also systematically studied for the removal of cadmium(II) ion. The maximum monolayer adsorption capacity of MnO-BP was estimated as 8.57 mg/g that it more adsorption capacity than untreated-bamboo powder by about 5 times.

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2

Dai, Shu Juan, Dong Qin Zhou, De Zhou Wei, and Shu Yong Yang. "Mechanism of Adsorbing Cadmium in Electroplating Wastewater by Water-Washing Waste Saccharomyces cerevisiae." Advanced Materials Research 183-185 (January 2011): 314–18. http://dx.doi.org/10.4028/www.scientific.net/amr.183-185.314.

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The function mechanism of water-washing waste saccharomyces cerevisiae and cadmium in electroplating wastewater was studied by desorption by washing experiment，chemiscal modification experiment and XPS analysis of water-washing saccharomyces cerevisiae pre-adsorbing and post-adsorbing cadmium. The desorption by washing experiment result show that chemiscal adsorption is the main adsorption form; phsicalffunt chemiscal modification experiment result show –NH2 –COOH was important groups of water-washing saccharomyces cerevisiae effecting on cadmium, XPS analysis result show that effect on water-

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3

P Vishwakarma, P. "Adsorptive Capacity, Adsorption Isotherm and Adsorption Kinetics of Activated Carbon for the Removal of Toxic Cadmium from Polluted Water." International Journal of Science and Research (IJSR) 11, no. 2 (2022): 1056–62. http://dx.doi.org/10.21275/sr22225160155.

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4

Motitswe, Moeng Geluk, Kassim Olasunkanmi Badmus, and Lindiwe Khotseng. "Application of Reduced Graphene Oxide-Zinc Oxide Nanocomposite in the Removal of Pb(II) and Cd(II) Contaminated Wastewater." Applied Nano 5, no. 3 (2024): 162–89. http://dx.doi.org/10.3390/applnano5030012.

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Toxic metal wastewater is a challenge for exposed terrestrial and aquatic environments, as well as the recyclability of the water, prompting inputs for the development of promising treatment methods. Consequently, the rGO/ZnONP nanocomposite was synthesized at room temperature for four hours and was tested for the adsorption of cadmium and lead in wastewater. The optimized nanocomposite had the lowest band gap energy (2.69 eV), and functional group interactions were at 516, 1220, 1732, 3009, and 3460 cm−1. The nanocomposite showed good ZnO nanoparticle size distribution and separation on rGO s

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5

Shifera, Leta. "Equilibrium, Kinetics and Thermodynamics Studies of Cadmium (II) Ion Adsorption on to Anchote Peel (Coccinia abyssinica Peel) Activated Carbon Adsorbent." American Journal of Physical Chemistry 13, no. 2 (2024): 50–58. http://dx.doi.org/10.11648/j.ajpc.20241302.14.

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Powdered Activated Carbon Adsorbent produced from Anchote peel (Coccinia abyssinica peel). Powdered Activated Carbon Adsorbent was investigated for its adsorption capacity for Cadmium (II) ion. Effects of parameters: pH, contact time, adsorbent dose, initial metal ion concentration, and temperature on adsorption of Cadmium (II) ion were investigated. The best adsorption of Cadmium (II) ion occurred at pH 5, where the adsorption reached equilibrium within 210 min. for the optimum 0.025 mg/l initial Cadmium (II) ion concentration. Kinetic studies of the data showed that the adsorption follows th

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6

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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7

Wang, Hui, Yiming Zhou, Xinjiang Hu, et al. "Optimization of Cadmium Adsorption by Magnetic Graphene Oxide Using a Fractional Factorial Design." International Journal of Environmental Research and Public Health 17, no. 18 (2020): 6648. http://dx.doi.org/10.3390/ijerph17186648.

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Graphene materials have attracted increasing interest in water remediation. In this study, magnetic graphene oxide (MGO) was prepared through the modified Hummers method and the adsorption behaviors of cadmium were investigated. Firstly, the sorption kinetics, isotherms, as well as the effects of pH were investigated. Then, fractional factorial design (FFD) was used to optimize the effects of pH, temperature, time, initial concentration of cadmium ion and NaCl on cadmium adsorption. The results indicate that MGO could effectively remove cadmium ions from an aqueous solution and the sorption da

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8

Gao, Hai Ying, Xiao Qian Li, Hui Jie Yan, and Xiao Wei Wang. "Simultaneous Adsorption of Trichloroethylene and Cadmium on Attapulgite in the Groundwater." Advanced Materials Research 610-613 (December 2012): 3202–5. http://dx.doi.org/10.4028/www.scientific.net/amr.610-613.3202.

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The adsorption of trichloroethylene (TCE) and Cd2+ combined contamination in the groundwater by attapulgite were studied, and the effects of pH, dosage of attapulgite and adsorption time on adsorption were investigated, equilibrium of the adsorptions processes were further conducted. Results showed that the adsorption rate of TCE affected little by the pH; TCE adsorption equilibrium reached after 3d, the removal rate was 71.34%; when attapulgite dosage was 0.03g, the adsorption rate was up to more than 51.08%. Freundlich isotherm was best fitted the adsorption process of TCE. Compound contamin

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9

Hussein, N. S., and A. A. Alhadethi. "The Role of Zeolite and the Adsorption of Cadmium from Polluted Water." IOP Conference Series: Earth and Environmental Science 1449, no. 1 (2025): 012105. https://doi.org/10.1088/1755-1315/1449/1/012105.

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Abstract The aim of this study is to remove cadmium from cadmium-contaminated water using adsorption technology with natural and synthetic Zeolite and the possibility of discharging this water after treatment into rivers without harming the environment. Two types of Zeolites were employed: natural Zeolite sourced from Jordanian, and synthetic Zeolite, which was prepared from Kaolin using the hydrothermal method. The effect of adsorbent weight, adsorption temperature, and isothermal adsorption of cadmium in cadmium-contaminated water were investigated. The results showed that synthetic nano-zeo

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10

Bi, Qiang, Juan Qin Xue, Ying Juan Guo, Yu Jie Wang, and Yun Feng Xue. "Study on the Kinetics of Adsorption of Cadmium by Chitosan." Advanced Materials Research 160-162 (November 2010): 1804–9. http://dx.doi.org/10.4028/www.scientific.net/amr.160-162.1804.

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The adsorption of cadmium in simulated wastewater by chitosan was investigated. The influence of temperature, contact time and pH on adsorption efficiency of cadmium was examined. Some related mathematical models were used in the fitting of experimental data. The results showed that at room temperature, the optimum pH of adsorption is between 4 and 7. At lower pH values, a strong competition existed between cadmium ions and protons for sorption sites and the sorption efficiency was decreased. After 60 minutes the adsorption equilibrium can be achieved. Chitosan is very effective at removing ca

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11

Krisnawati, Jasinda, and Iriany. "PENJERAPAN LOGAM KADMIUM (Cd2+) DENGAN ADSORBEN CANGKANG TELUR BEBEK YANG TELAH DIAKTIVASI." Jurnal Teknik Kimia USU 2, no. 3 (2013): 29–32. http://dx.doi.org/10.32734/jtk.v2i3.1446.

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Harzadous waste water is the waste that can be harmful to human’s health. One of heavy metals that contains in harzadous waste is cadmium. This research aims to investigate the characteristic of cadmium adsorption, equilibrium time, percentage adsorption, adsorption kinetic, adsorption isotherm and capacity of cadmium adsorption by using duck egg’s shell adsorbent. Duck egg’s shell adsorbent that had been activated at 600 oC were put into cadmium solution and mixed together. Every 10 minutes experimental samples were analyzed using AAS. The results indicated that percentage adsorption increase

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12

Khoshbouy, Reza, Rico Lejiu, Fumitake Takahashi, and Kunio Yoshikawa. "Effect of acid-assisted hydrothermal carbonization (HTC) process of tree branches using nitric acid on cadmium adsorption." E3S Web of Conferences 67 (2018): 03033. http://dx.doi.org/10.1051/e3sconf/20186703033.

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Application of acid in HTC process has been confirmed to have effect on hydrochar properties related to its adsorption capacity. Woody materials (tree branches) were used to investigate the relation of nitric acid addition in HTC process on the hydrochar surface properties and its adsorption mechanism toward cadmium in water solution. Tree branches were processed at 200-260 °C mixed with water and nitric acid (HNO3) at ratio 0-50% to hydrochar mass and held for holding time of 30, 105 and 180 minutes. Batch adsorption test was conducted by mixing the hydrochars with cadmium solution at 100 ppm

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13

Cui, Yan Hui, and Shou Gang Yan. "The Experimental Study of the Adsorption Behavior of Cd on Manganese Dioxides." Advanced Materials Research 1089 (January 2015): 125–28. http://dx.doi.org/10.4028/www.scientific.net/amr.1089.125.

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This paper studied the adsorption behavior of Cd on manganese dioxide, focusing on the factors of affecting the adsorption. The results showed that the adsorption equilibrium was reached in about six hours. The amount of manganese dioxide adsorption of cadmium ions increased with the increasing of the initial Cd2+ concentration, and then decreased, adsorption isotherms accorded with Langmuir isotherm equation. The most influence factor on the adsorption properties of manganese dioxide was pH value. After the addition of inorganic salts, only ammonium bicarbonate could promote the adsorption of

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14

Ai, Jing, Hong-Rui Tian, Xue Min, Zi-Chuan Wang, and Zhong-Ming Sun. "A fast and highly selective Congo red adsorption material based on a cadmium-phosphonate network." Dalton Transactions 49, no. 12 (2020): 3700–3705. http://dx.doi.org/10.1039/c9dt01545k.

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15

Cui, Hongbiao, Zhi Xu, Tengfei Guo, et al. "Calcium Hydroxide–Phosphate-Modified Fly Ash Enhances the Adsorption and Stabilization of Soil Lead and Cadmium." Agronomy 14, no. 12 (2024): 2905. https://doi.org/10.3390/agronomy14122905.

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Fly ash (FA) is characterized by its porous structure and richness in silicon and aluminum oxides; thus, it can be used as an adsorbent for heavy metals. In order to enhance the absorption efficiency and stabilization effect, we prepared a new fly ash (FAKCa) using calcium hydroxide (Ca(OH)2) and phosphate (KH2PO4) through a simple one-step low-temperature alkali dissolution method and investigated its adsorption performance for lead and cadmium in water solutions and the stabilization effects of lead and cadmium in soils under flooding condition. Results showed that the Langmuir model best fi

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16

Kakaei, Ahmad, and Mohammad Kazemeini. "Removal of Cd (II) in Water Samples Using Modified Magnetic Iron Oxide Nanoparticle." Iranian Journal of Toxicology 10, no. 1 (2016): 9–14. http://dx.doi.org/10.32598/ijt.10.1.299.1.

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Background: Heavy metals, even at low concentrations, are harmful to human health and environment. Cadmium as a heavy metal is highly toxic and can cause serious threat to living organisms. This research was designed to evaluate the adsorption potential of modified magnetic iron nanoparticles by 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol ligand for the removal of cadmium ions from water solutions. Methods: This study was conducted in Ilam Branch, Islamic Azad University, Iran, in 2014. Modified magnetic iron nanoparticle was used as adsorbent for the removal of cadmium from aqueous solution

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17

Cundari, Lia, Alna Livia Fanneza, Nanda Citra Arisma, and Asha Aisha Julian. "Isotherm and Kinetic Adsorption of Cadmium (Cd) onto Biosorbent Made from Kepok Banana Peel (Musa Acuminata balbisian): the Effect of Activator Type and Biosorbent Dosage." Aceh International Journal of Science and Technology 12, no. 2 (2023): 297–303. http://dx.doi.org/10.13170/aijst.12.2.27947.

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The present study determined the isotherm and kinetics model of the cadmium adsorption process onto a biosorbent made from kepok banana peel (Musa Acuminata balbisian). The experiments were carried out in batch process, laboratories scale, room temperature, pH of Cadmium of 4, volume of Cd solution of 20 ml, and biosorbent size particle of 60 mesh—the biosorbent produced using chemical activation method onto dry banana peel. The variation in this research was the type of activator (H3PO4 and H2SO4) and the biosorbent dosage (1, 1.5, and 2 g). The experimental data was used to calculate the Lan

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18

Cahyaningrum, Sari Edi, and Amaria Amaria. "UTILIZATION OF Penaus monodon SHRIMP SHELL WASTE AS ADSORBENT OF CADMIUM(II) IN WATER MEDIUM." Indonesian Journal of Chemistry 5, no. 2 (2010): 130–34. http://dx.doi.org/10.22146/ijc.21819.

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Utilization of shrimp shell has been optimum so that in this research preparation of adsorbent chitosan from shell of shrimp (Penaus monodon) as raw materials for cadmium(II) adsorption was carried out. The chitin was made by the deproteination, demineralization; chitosan was prepared by chitin deacetylation. This work was started with Infra Red Spectroscopic identification of functional group. Percentage of deacetylation was determined also by Infra Red Spectroscopy. Contant of nitrogen was determined by Kjeldhal method. The isotherm adsorption Langmuir model was employed for the determinatio

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19

Dobi-Brice, Kouassi Kouadio, Yacouba Zoungranan, and Koffi Kouakou Urbain, et. al. "Cadmium Removal from Synthetic Aqueous Solutions by Adsorption on Peanut Shells: Kinetic and Thermodynamic Studies." Academic Journal of Chemistry, no. 84 (December 1, 2023): 66–75. http://dx.doi.org/10.32861/ajc.84.66.75.

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Peanut shells were used in this study as an adsorbent carrier in the treatment of wastewater containing a trace metal element (TME), namely cadmium, a pollutant with adverse effects on health and the environment. The influences of contact time between adsorbent and adsorbate, initial cadmium concentration, adsorbent mass, reaction medium temperature and solution pH were evaluated. To determine the optimum parameters, pseudo-first-order and pseudo-second-order kinetic models were applied to the experimental results of the contact time study. Similarly, experimental results relating to the influ

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20

Cut Raziah, Zerlinda Putri, Atika Rahmi Lubis, et al. "PENURUNAN KADAR LOGAM KADMIUM MENGGUNAKAN ADSORBEN NANO ZEOLIT ALAM ACEH." Jurnal Teknik Kimia USU 6, no. 1 (2017): 1–6. http://dx.doi.org/10.32734/jtk.v6i1.1557.

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 The presence of Cadmium (Cd) in groundwater is an issue that needs serious handling as it causes problems to human health. The removal of Cadmium (Cd) can be done by various methods such as adsorption, oxidation, filtration, and many more. In this study, the method used was adsorption using Aceh natural zeolite. This process was expected to reduce Cd metal as effectively as possible. The adsorption was conducted by varying contact time, adsorbent dosage, pH and initial concentration of Cd metal. The crystallized Aceh natural zeolite was characterized by X-Ray Fluorescence (XRF) with Si/

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21

Banat, Fawzi, Sameer Al-Asheh, and Leema Al-Makhadmeh. "Kinetics and Equilibrium Study of Cadmium Ion Sorption onto Date Pits — An Agricultural Waste." Adsorption Science & Technology 21, no. 3 (2003): 245–60. http://dx.doi.org/10.1260/026361703322404395.

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Activated carbons derived from date pits obtained as a surplus agricultural solid waste and natural date pits were used for the adsorption of cadmium ions from water. The effect of contact time, pH, temperature, cadmium ion concentration, sorbent dose, salinity, as well as the activation temperature on the removal of cadmium ions by date pits was studied. The maximum adsorption capacity of date pits for cadmium ions was obtained using the linear Langmuir isotherm model and used as a basis for comparative purposes. Three sorption kinetic models were used for explaining the probable mechanisms o

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22

Yang, Ting, Lin-Yu Ma, Ming-Li Chen, and Jian-Hua Wang. "Metallothionein isoforms for selective biosorption and preconcentration of cadmium at ultra-trace levels." Journal of Analytical Atomic Spectrometry 30, no. 4 (2015): 929–35. http://dx.doi.org/10.1039/c4ja00418c.

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Metallothioneins immobilized on spherical SiO<sub>2</sub> particles exhibit favorable adsorption behavior toward cadmium, which facilitate selective adsorption of cadmium from complex sample matrices.

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23

Kim, ND, and JE Fergusson. "Adsorption of cadmium by an aquent New Zealand soil and Its components." Soil Research 30, no. 2 (1992): 159. http://dx.doi.org/10.1071/sr9920159.

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Cadmium adsorption by a New Zealand soil, three of its particle size fractions, the soil with organic matter removed, and the soil with iron and manganese oxides removed, was studied at the soil's natural pH (5.70) and at cadmium concentrations (0.01 to 0.23 �g mL-1) typical of those found in the environment. Under these conditions, the whole soil had a strong affinity for trace amounts of cadmium, adsorbing about nine-tenths of that added. Relative conditional equilibrium constants for cadmium adsorption by the soil's components decrease in the following order: clay (1.59) > [whole soil (1

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24

Naseem, Khalida, Zahoor H. Farooqi, Robina Begum, et al. "Removal of Cadmium (II) from Aqueous Medium Using Vigna radiata Leave Biomass: Equilibrium Isotherms, Kinetics and Thermodynamics." Zeitschrift für Physikalische Chemie 233, no. 5 (2019): 669–90. http://dx.doi.org/10.1515/zpch-2018-1223.

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Abstract In the present study, a novel biosorbent Vigna radiata leaves biomass (L. biomass) was utilized for cadmium (II) extraction from aqueous medium. Cadmium (II) free and cadmium (II) loaded L. biomass was analyzed by Fourier transform infrared (FTIR) spectroscopy. Adsorption of cadmium (II) from aqueous medium was studied under various conditions such as adsorbent dose, agitation time, pH and temperature of the medium to optimize the process variables. Different models including Langmuir, Freundlich, Temkin and Dubinin–Radushkevich (DR) were used to elaborate the insight of adsorption pr

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25

Wang, Fangting, Ke Bao, Changsheng Huang, Xinwen Zhao, Wenjing Han, and Zhibin Yin. "Adsorption and pH Values Determine the Distribution of Cadmium in Terrestrial and Marine Soils in the Nansha Area, Pearl River Delta." International Journal of Environmental Research and Public Health 19, no. 2 (2022): 793. http://dx.doi.org/10.3390/ijerph19020793.

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Cadmium is a toxic element with a half-life of several decades, which can accumulate in the human body by entering the food chain and seriously harm health. The cadmium adsorption and desorption processes in the soil directly affect the migration, transformation, bioavailability, and ecotoxicity of this element in soil-plant systems. Coastal zones are located in the transitional zone between land and sea, and large amounts of terrigenous material input have important environmental effects on this ecosystem. The pH, hydrodynamic conditions, soil organic matter (SOM), and other factors defining

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Li, Kun, Guangcai Yin, Qiuyuan Xu, et al. "Influence of Aged Biochar Modified by Cd2+ on Soil Properties and Microbial Community." Sustainability 12, no. 12 (2020): 4868. http://dx.doi.org/10.3390/su12124868.

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Biochar is a promising addition for cadmium-contaminated soil in-situ remediation, but its surface properties change after aging, cadmium adsorption is not well-documented, and subsequent environmental effects are still unknown. In this study, wood-derived (Eucalyptus saligna Sm.) biochar was pre-treated to simulate aging and the cadmium sorption process. We then analyzed the resulting physicochemical characteristics. We conducted comparative incubation studies on three age stages of biochar under cadmium adsorption or no cadmium adsorption and then measured soil properties and microbial commu

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27

Alguacil, Francisco José. "A Kinetic study of Cadmium(Ii) Adsorption on Lewatit Tp260 Resin." Journal of Chemical Research 2003, no. 3 (2003): 144–46. http://dx.doi.org/10.3184/030823403103173282.

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Cadmium(II) adsorption from aqueous sulphate medium on Lewatit TP260 cationic (di-Na+) ion exchange resin was investigated. The influence of operating variables such as aqueous pH, metal concentration, time and temperature on the equilibrium parameters was studied. Cadmium(II) adsorption on the resin can described by the Langmuir equation, whereas cadmium(II) uptake is particle diffusion controlled. The moving boundary particle diffusion model only fits the initial metal adsorption on the resin.

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Oranratmanee, Marisa, and Warapong Tungittiplakorn. "Application of Biochar for Cadmium Stabilization in Contaminated Paddy Soil." E3S Web of Conferences 302 (2021): 02021. http://dx.doi.org/10.1051/e3sconf/202130202021.

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Cadmium contamination in rice fields near zinc mines in Mae Sot District, Tak Province has been a persistent problem for decades. The contamination covers a vast area, making several soil remediation methods, such as soil washing or excavation impractical. Phytoremediation would also take several years and interfere with farming. However, there are recent reports on the potential of biochar in cadmium stabilization which resulted in reduced cadmium uptake by rice. Therefore, in this study, several biomaterials were investigated to produce the most suitable biochar for cadmium stabilization in

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29

Liu, Xiaofeng, Xin Xu, Xiaoqiang Dong, and Junboum Park. "Adsorption characteristics of cadmium ions from aqueous solution onto pine sawdust biomass and biochar." BioResources 14, no. 2 (2019): 4270–83. http://dx.doi.org/10.15376/biores.14.2.4270-4283.

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The adsorption capacity of cadmium ions by pine sawdust biomass and biochar was evaluated in batch experiments. Pine sawdust biochars were pyrolyzed at 500 °C and 700 °C and obtained in the absence of oxygen. The adsorption capacity of biochar was higher than the raw biomass (3.47 mg/g). Biochars produced at 700 °C showed better adsorption efficiency (6.09 mg/g) than that produced at 500 °C (4.78 mg/g). Also, the adsorption kinetics and adsorption isotherms were studied. The adsorption behavior of cadmium by pine sawdust biomass and biochar fitted Langmuir isotherms and pseudo-second order kin

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Annath, Hamza, Oluwafikayo Jaiyeola, and Chirangano Mangwandi. "Highly Efficient Removal of Cadmium from Wastewater Using Eco-Friendly and Cost-Effective Amorphous Silicoaluminophosphates as Adsorbent Particles." Separations 12, no. 5 (2025): 128. https://doi.org/10.3390/separations12050128.

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This article presents a study on the development of amorphous aluminophosphate (Am-AlP) and silico-aluminophosphate (Am-SiAlP) materials for the removal of cadmium (Cd) from wastewater. Cadmium is a toxic heavy metal that poses significant environmental and health risks, and its removal from water sources is crucial. This study explores the synthesis of these materials, focusing on the impact of silicon content on their adsorption properties. The materials were characterized using various techniques, including FTIR, XRD, TGA, and BET analysis, which revealed that the incorporation of silicon i

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Alyasi, Haya, Hamish R. Mackey, and Gordon McKay. "Removal of cadmium from waters by adsorption using nanochitosan." Energy & Environment 31, no. 3 (2019): 517–34. http://dx.doi.org/10.1177/0958305x19876191.

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This study is based on the removal of cadmium from water by adsorption onto nanochitosan in order to reduce the impact of cadmium toxicity to humans and animals. The adsorption of cadmium onto this particular nanochitosan is a novel study assessed through equilibrium and kinetic experiments. It provides an effective method of cadmium removal to avoid cadmium health impacts described herein. The influence of different parameters on the effectiveness and efficiency of cadmium adsorption onto nanochitosan are presented by studying the effects of pH, initial cadmium concentration and the dosage of

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Boriskov, Dmitry E., Sania Yu Efremova, and Nadezhda А. Komarova. "Study of adsorption of cadmium ions from solutions on natural and modified diatomites." Izvestiya of Saratov University. Chemistry. Biology. Ecology 23, no. 1 (2023): 70–76. http://dx.doi.org/10.18500/1816-9775-2023-23-1-70-76.

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The search for new technologies for the purification of natural and waste water does not lose its relevance. Biologically, heavy metals are among the most dangerous pollutants. The highest toxicity among them has cadmium, causing serious environmental problems during technogenic pollution of the aquatic environment, and its extraction is an urgent task. The analysis of foreign studies on the extraction of cadmium ions is carried out. The adsorption of cadmium has been studied by many authors and described in many works on kaolin oxides / iron hydroxides, in contrast to siliceous rocks. In this

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Mathialagan, Thyagarajan, Thiruvenkatachari Viraraghavan, and Denis Roy Cullimore. "Adsorption of Cadmium from Aqueous Solutions by Edible Mushrooms (Agaricus bisporus and Lentinus edodes)." Water Quality Research Journal 38, no. 3 (2003): 499–514. http://dx.doi.org/10.2166/wqrj.2003.032.

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Abstract Fungal organisms can remove heavy metals from aqueous solutions. Macro fungi such as Agaricus bisporus and Lentinus edodes (shiitake), commonly called mushrooms, are edible and are grown commercially. Laboratory batch studies were conducted at room temperature (21 ± 1°C) to determine the potential of these fungal biomasses for adsorption of cadmium from aqueous solutions containing 1 mg/L cadmium. Results from batch studies showed that biomasses prepared from A. bisporus and L. edodes had good potential for removing cadmium from aqueous solutions. The maximum adsorption capacity of A.

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Jebril, Nadia Mahmoud Tawfiq. "Nanobiopolymer: Potential Applications in Bioremediation of Cadmium Contaminated Water." Iraqi Journal of Industrial Research 10, no. 2 (2023): 117–25. http://dx.doi.org/10.53523/ijoirvol10i2id290.

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Nanobiopolymer nanotechnology, bacterial extracellular polymeric substances (EPS), has been used markedly for various water treatments.EPS has polysaccharides, proteins, and lipids, which have functional groups such as amino, sulfhydryl, carboxylic, and phosphate groups that allow binding to metal ions. The accumulation of the metal ions onto the EPS bacterial cell walls is used widely in the bioremediation of cadmium and other metals. This study objectives were extracting EPSs from the bacterium Bacillus subtilis 168 Cd2 and investigating their cadmium adsorption in bead column reactors after

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Bahrami, Shirin, Amarjeet S. Bassi, and Ernest K. Yanful. "Sorption of Heavy Metals with Sol-Gel Particles Containing Crude Metallothionein Extracts from Scchizosaccharomyces pombe." Water Quality Research Journal 42, no. 2 (2007): 123–29. http://dx.doi.org/10.2166/wqrj.2007.015.

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Abstract Crude metallothionein (MT) extracts from Scchizosaccharomyces pombe entrapped in sol-gels were investigated for the removal of heavy metals such as cadmium and zinc. The sol-gel provided a robust immobilization matrix for the protein extract. Adsorption and desorption isotherms were developed for both cadmium and zinc. Both metals were recovered from the sol-gel by desorption using a 1 M NaCl solution. The adsorption kinetic studies showed that cadmium and zinc adsorption followed the Langmuir isotherm. The distribution factors for cadmium and zinc were found to be 5.43 L/mg and 2.88

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Anggraini, Galuh Kirana, Ade Novitasari та Amri Amri. "Ca-Al Layered Double Hydroxides Pillared H4[α-PW12O40]•nH2O as Adsorbent Material for Cadmium (II) Removal from Aqueous Solution". Indonesian Journal of Material Research 2, № 2 (2024): 56–60. http://dx.doi.org/10.26554/ijmr.20242235.

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Heavy metals in the environment can have a detrimental impact on human health. This study successfully used a new adsorbent material, specifically layered double hydroxide pillared with keggin polyoxometalate H4[α-PW12O40]•nH2O (Ca-Al/POM), to effectively remove cadmium (II) from aqueous solution. The Ca-Al/POM adsorbent has been thoroughly analyzed using X-ray diffraction and FT-IR. The findings showed an increase in the maximum adsorption capacity for cadmium (II) when using Ca-Al LDH intercalated with POM. The study of equilibrium adsorption isotherms showed that the Ca-Al/POM adsorbent eff

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Boriskov, D. E., S. Yu Efremova, N. A. Komarova, and E. I. Tikhomirova. "Study of adsorption of cadmium ions from solutions on natural and modified diatomites." IOP Conference Series: Earth and Environmental Science 1061, no. 1 (2022): 012030. http://dx.doi.org/10.1088/1755-1315/1061/1/012030.

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Abstract In this work, the use of the sorption method is proposed for the purification of wastewater from ions of heavy metals. The aim was to study the sorption activity of diatomite in relation to cadmium ions. The studies were carried out under static conditions. The processes of physicochemical modification of diatomite for the extraction of cadmium ions from aqueous solutions were investigated. The influence of time and pH on the value of sorption was studied. The optimal conditions for sorption extraction have been determined. Adsorption isotherms have been constructed, and quantitative

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Khan, A. S. A. "Equilibrium and Thermodynamic Study of Cadmium Adsorption on Dalbergia Sissoo Sawdust." Nucleus 53, no. 1 (2017): 1–8. https://doi.org/10.71330/thenucleus.2016.231.

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In the present paper, the equilibrium and thermodynamic parameters of cadmium adsorption from aqueous solution on sodium hydroxide modified Dalbergia sissoo sawdust were evaluated on the basis of Langmuir, Temkin and Dubinin-Radushkevich isotherms. The adsorption of cadmium on sawdust was monolayer type, renewable and occurred by complexation mechanism. The analysis of thermodynamic data indicated that adsorption of cadmium on Dalbergia sissoo sawdust is spontaneous, exothermic and entropy driven. The linear form of Dubinin-Radushkevich isotherm was established which can be used for evaluation

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Faisal, Muhammad, Siti Kana, Nabila, Hisbullah, Abrar Muslim, and Asri Gani. "ADSORPTION OF Cd(II) IN A SEMI-CONTINUOUS PROCESS BY RESIDUAL CHARCOAL FROM THE PYROLYZED OIL PALM SHELLS." RASAYAN Journal of Chemistry 15, no. 03 (2022): 1792–98. http://dx.doi.org/10.31788/rjc.2022.1536909.

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This study aims to evaluate the utilization of residual charcoal from the pyrolysis of oil palm shells as activated carbon for the adsorption of cadmium metal ions in a semi-continuous process. The charcoal was crushed with a ball mill to a size of 80-100 mesh and its activation was carried out chemically using 0.1 N NaOH. Cadmium metal ions were adsorbed in a semi-continuous operation using a cylindrical packed bed column, with variations in the inlet feed concentration, pH, column inside diameter, bed height, and flow rate. The initial concentration of cadmium before and after the adsorption

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Li, Xiang, Shun Guo Bai, Bei Dou Xi, Zhi Ye Yuan, and Yue Ying Wang. "Research of Effect of Groundwater Table Fluctuation on Migration Law of Cadmium." Advanced Materials Research 599 (November 2012): 455–61. http://dx.doi.org/10.4028/www.scientific.net/amr.599.455.

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In this paper, we conduct the soil-column experiment on underground soil in a laboratory of Changping, Beijing, to simulate the effect of water table fluctuation on the cadmium migration law after twice pollution. The main job of the experience is to test the adsorption and desorption characteristics of the soil as well as the temporal and spatial distribution of cadmium ions in soil column. The experimental data show that (1) the two kinds of soil used in the test both have a strong adsorption capacity to cadmium ions, and the values could reach to 1026mg/kg and 2804mg/kg. (2) The dominant fa

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Chu, K. H., M. A. Hashim, S. M. Phang, and V. B. Samuel. "Biosorption of cadmium by algal biomass: adsorption and desorption characteristics." Water Science and Technology 35, no. 7 (1997): 115–22. http://dx.doi.org/10.2166/wst.1997.0267.

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The adsorption and desorption characteristics of a biosorption process comprising the biomass of the marine alga Sargassum baccularia, cadmium ions and desorbing agents hydrochloric acid and ethylenediaminetetraacetic acid (EDTA) were investigated using a batch reactor system. Both desorbents were effective in stripping adsorbed cadmium from the biomass. It was found that HCl at pH 2 could desorb 80% of the cadmium initially loaded onto the biomass. Almost complete recovery of cadmium was achieved by a 3.24 mM EDTA solution. The reusability of the biomass was tested in five consecutive adsorpt

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Simić, Marija, Jelena Petrović, Tatjana Šoštarić, et al. "A Mechanism Assessment and Differences of Cadmium Adsorption on Raw and Alkali-Modified Agricultural Waste." Processes 10, no. 10 (2022): 1957. http://dx.doi.org/10.3390/pr10101957.

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In this study, raw corn silk was considered for the removal of cadmium ions from aqueous solutions. In order to improve adsorption characteristics, the KOH treatment was applied as a route to obtain modified materials. Both materials before and after metal adsorption were characterized by pHPZC, SEM-EDX and FTIR analysis. SEM images and FTIR spectra revealed that alkali modification caused some structural changes that could improve the adsorption properties of the investigated material. The experimental results and the ion-exchange study revealed that the biosorption process of cadmium ions on

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Chen, Ya, Ruifeng Shan, and Xiaoyin Sun. "Adsorption of cadmium by magnesium-modified biochar at different pyrolysis temperatures." BioResources 15, no. 1 (2019): 767–86. http://dx.doi.org/10.15376/biores.15.1.767-786.

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Metal pollution in soil is an increasing concern. Cadmium poses significant risks to ecosystems, and methodologies for its removal, including adsorption, have been researched. There are several environmentally friendly adsorbing materials (such as Biochar) for Cd removal. In this study, to improve the adsorptive capacity of Cd, coconut and peanut shells were used as raw materials to prepare Biochar at 300 °C and 600 °C. The effects of the pyrolysis temperature and material type on the physicochemical properties of the adsorbents were investigated by elemental analysis, scanning electron micros

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Tian, Lingna, Daiwei Wang, Yueying Liu, et al. "Construction of Genetically Engineered Escherichia coli Cell Factory for Enhanced Cadmium Bioaccumulation in Wastewater." Water 16, no. 13 (2024): 1759. http://dx.doi.org/10.3390/w16131759.

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The heavy metal cadmium poses severe threats to both ecosystems and human health. Utilizing genetic engineering to enhance the microbial capability for efficient cadmium accumulation has emerged as a pivotal research direction. This study constructed a genetically engineered bacterium capable of expressing multivalent phytochelatins with a self-assembly ability and explored its efficacy in cadmium adsorption. Molecular biology techniques were adopted to fuse the recombinant human ferritin (rHF) gene and the synthetic phytochelatin (EC) gene, known for its robust adsorption capacity for heavy m

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Song, Xiu Ling, and Hui Qian. "Study on the Experiment of Adsorption Cadmium (II) with Insoluble Starch Xanthate." Advanced Materials Research 413 (December 2011): 34–37. http://dx.doi.org/10.4028/www.scientific.net/amr.413.34.

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Insoluble starch xanthate (ISX) is made with the potato starch and can be used for the treatment of cadmium-containing waste water. The performance of treatment and the influence factors with ISX made in this experiment are studied in this paper. It is shown that the removal rate of cadmium ion in wastewater can reach over 96%, when pH value of reaction liquid is 8.0, the adsorption time is 0.5h, and the concentration of cadmium ions in waste water is 30 mg·L-1.The adsorption mechanism was also discussed. It is shown that ISX promises to be a new treatment adsorbent to wastewater containing th

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Zhu, Guangxu, Xingfeng Wang, Ronghui Du, Shuangxi Wen, Lifen Du, and Qiang Tu. "Adsorption of Cd2+ by Lactobacillus plantarum Immobilized on Distiller’s Grains Biochar: Mechanism and Action." Microorganisms 12, no. 7 (2024): 1406. http://dx.doi.org/10.3390/microorganisms12071406.

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Immobilized microbial technology has recently emerged as a prominent research focus for the remediation of heavy metal pollution because of its superior treatment efficiency, ease of operation, environmental friendliness, and cost-effectiveness. This study investigated the adsorption characteristics and mechanisms of Cd2+ solutions by Lactobacillus plantarum adsorbed immobilized on distiller’s grains biochar (XIM) and Lactobacillus plantarum–encapsulated immobilized on distiller’s grains biochar (BIM). The findings reveal that the maximum adsorption capacity and efficiency were achieved at a p

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Danila, Vaidotas, and Saulius Vasarevičius. "Theoretical Modelling of Immobilization of Cadmium and Nickel in Soil Using Iron Nanoparticles." Mokslas - Lietuvos ateitis 9, no. 4 (2017): 381–86. http://dx.doi.org/10.3846/mla.2017.1067.

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Immobilization using zero valent using iron nanoparticles is a soil remediation technology that reduces concentrations of dissolved contaminants in soil solution. Immobilization of heavy metals in soil can be achieved through heavy metals adsorption and surface complexation reactions. These processes result in adsorption of heavy metals from solution phase and thus reducing their mobility in soil. Theoretical modelling of heavy metals, namely, cadmium and nickel, adsorption using zero valent iron nanoparticles was conducted using Visual MINTEQ. Adsorption of cadmium and nickel from soil soluti

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Imanova, J. R., A. A. Azizov, A. M. Nabiev, F. G. Khalilova, and R. M. Alosmanov. "ADSORPTION OF CADMIUM IONS ISOTHERM FROM WATER INTO POLYMER NANOCOMPOSITE." Chemical Problems 2018, no. 1 (2018): 73–77. http://dx.doi.org/10.32737/2221-8688-2018-1-73-77.

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Shachneva, Evgeniya, and Darya Archibasova. "Adsorption of Cadmium Ions from Aqueous Solutions on Modified Sorbents." Chemistry & Chemical Technology 12, no. 2 (2018): 182–87. http://dx.doi.org/10.23939/chcht12.02.182.

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Wang, Meng, Xiao Li Li, and Yu Li. "Characteristic of Competitive Adsorption of Dimethoate with a Variety of Pollutants on Surficial Sediments through Fractional Factorial Design." Advanced Materials Research 599 (November 2012): 467–71. http://dx.doi.org/10.4028/www.scientific.net/amr.599.467.

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In order to reveal the combined pollution characteristic of dimethoate adsorption onto the surficial sediments in pesticide (dimethoate, metalaxyl, atrazine, malathion, prometryn)/heavy metals (copper, zinc, lead, cadmium, nickel) composite contamination system, a completely foldover design and confounding design assisted resolution Ⅲ of 210-6 fractional factorial design method is used to identify the main effects and interactions of these ten pollution factors. The study found that the main effects of zinc, cadmium, malathion, prometryn have significant effect (α=0.05) to dimethoate adsorptio

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