Results 271 to 280 of about 133,911 (314)

Adsorption of Heavy Metals–A Review

Materials Today: Proceedings, 2019
Abstract Many researchers have used coal fly ash; rice husk ash, nano material and conducting polymer- as adsorbents to remove water pollutants including Cr, Pb, Hg, Zn, Mn and Cu, heavy metal. The main objective in this study to identify the nano materials used for heavy metal adsorption process effectively.
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The Adsorption of Heavy Metal Ions

Advances in Science and Technology
The aim of the study is to research of the adsorption properties of heavy metal ions Pb2+, Cd2+ and Ni2+ from industrial wastewater. For the adsorption of heavy metal ions, natural clinoptilolite was used, which belongs to the Ai-Dag deposit of the Tovuz-Kazakh region of Azerbaijan.
Fakhraddin Yusubov, Miryusif Mirbabayev, Gulahmad Talibov, Ilham Aliyev, Govhar Valiyeva   +4 more
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Heavy metal adsorption by sulphide mineral surfaces

Geochimica et Cosmochimica Acta, 1986
Abstract The adsorption of aqueous Hg2+, Pb2+, Zn2+ and Cd2+ complexes on a variety of sulphide minerals has been studied as a function of the solution pH and also as a function of the nature of the ligands in solution. Sulphide minerals are excellent scavengers for these heavy metals. The adsorption is strongly pH dependent, i.e. there is a critical
Gilles E. Jean, G.Michael Bancroft
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Functionalized silica for heavy metal ions adsorption

Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2003
Abstract Heavy metals adsorbents were prepared by co-condensation of tetraethoxysilane and functionalized trialkoxysilane RSi(OR′)3. Functionalized porous silicas with aminopropyl (H2N(CH2)3-), [amino-ethylamino]propyl- (H2N-(CH2)2-NH(CH2)3), (2-aminoethylamino)-ethylamino]propyl (H2N-(CH2)2-NH-(CH2)2-NH(CH2)3-), and mercaptopropyl (HS-(CH2)3 ...
Bois, Laurence, Bonhommé, Anne, Ribes, Annie, Pais, Bernadette, Raffin, Guy, Tessier, Franck   +5 more
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Novel modified pectin for heavy metal adsorption

Chinese Chemical Letters, 2007
Abstract Modified pectin cross-linked with adipic acid, was synthesized and used for heavy metal removal from wastewater. SEM and FTIR were used to investigate its structure and morphology. The modified pectin had a rough, porous phase covered with carboxy groups, resulting a high adsorption capacity.
Feng Ting Li, Hong Yang, Yan Zhao, Ran Xu   +3 more
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Competitive Adsorption of Heavy Metals by Soils

Journal of Environmental Quality, 1986
AbstractThe competitive adsorption of Cd, Cu, Pb, and Zn from 0.025 M NaClO4 solutions onto four soils with differing chemical properties was investigated with batch adsorption experiments. For two mineral soils, adsorption under acidic conditions (pH 5.0) followed the sequence Pb > Cu > Zn > Cd, which corresponds to the order of increasing pK
H. A. Elliott, M. R. Liberati, C. P. Huang   +2 more
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Heavy metal adsorption on bacterially produced FeS

Minerals Engineering, 1995
Abstract This paper describes experiments to investigate the adsorbent properties of an iron sulphide material produced by sulphate reducing microorganisms when they are grown with a substrate containing appreciable quantities of iron. It is found that the material when compared with other adsorbents has excellent adsorptive properties with respect ...
J.H.P. Watson, D.C. Ellwood, Qixi Deng, S. Mikhalovsky, C.E. Hayter, J. Evans   +5 more
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Heavy metal adsorption using biogenic iron compounds

Hydrometallurgy, 2018
Abstract A significant number of industries produce large volumes of aqueous effluents containing heavy metals that discharge into the environment threatening biodiversity and human life. However, such effluents pose serious problems for the industry because of the high cost of metal decontamination using conventional technologies.
Laura Castro, M. Luisa Blázquez, Felisa González, Jesús A. Muñoz, Antonio Ballester   +4 more
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Adsorption of Heavy Metals to Microbial Biomass

2003
The finding that several microorganisms are able to bind and accumulate heavy metals suggested the possibility to use them for removal of metals from solutions by the process called biosorption. Although biosorption of heavy metals was studied also with plants (mosses, leaves of trees) and marine macroalgae, microorganisms seem to be the most promising
P. Baldrian, J. Gabriel
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Recent Advances of Metal–Organic Framework for Heavy Metal Ions Adsorption

Langmuir
Heavy metal ion wastewater is a pressing and inescapable issue that is closely related to human health and ecological security due to its toxicity, carcinogenicity, and the unmanageable property of this type of wastewater. Metal-Organic Frameworks (MOFs) are a class of crystalline nanoporous materials with flexible designability and controllability ...
Xueyi Zhang, Zihao Zhai, Xiaoquan Feng, Hongwei Hou, Yatao Zhang   +4 more
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