Book ChapterDOI
Conventional Methods of Wastewater Treatment
Inga Zinicovscaia,Inga Zinicovscaia +1 more
- pp 17-25
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TLDR
In this paper, a review of physico-chemical techniques applied to pollutants for their removal from wastewater is given, where a particular focus is given to coagulation-flocculation, chemical precipitation, ion exchange, adsorption, membrane filtration and electrochemical treatments.Abstract:
This chapter reviews various physico–chemical techniques applied to pollutants for their removal from wastewater. A particular focus is given to coagulation–flocculation, chemical precipitation, ion exchange, adsorption, membrane filtration and electrochemical treatments. The main particularities, advantages and disadvantages of the described techniques are presented. Coagulation–flocculation and chemical precipitation can be applied for the treatment of wastewater with metal concentrations higher than 1000 mg/L. Ion exchange and adsorption are recognized as effective and economic methods of pollutant removal from wastewaters at pollutants concentrations in the range of <10–100 mg/L. Membrane filtration and electrochemical treatment can only be feasible for special technological tasks because of their high costs.read more
Citations
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Synthesis and photocatalytic activities of a CuO/TiO2 composite catalyst using aquatic plants with accumulated copper as a template
Dongfang Lu,Osman Ahmed Zelekew,Angaw Kelemework Abay,Qitang Huang,Xiaoyun Chen,Yushan Zheng +5 more
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References
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Journal ArticleDOI
Removal of heavy metal ions from wastewaters: A review
Fenglian Fu,Qi Wang +1 more
TL;DR: It is evident from the literature survey articles that ion-exchange, adsorption and membrane filtration are the most frequently studied for the treatment of heavy metal wastewater.
Journal ArticleDOI
A review of potentially low-cost sorbents for heavy metals
TL;DR: The use of low-cost sorbents has been investigated as a replacement for current costly methods of removing heavy metals from solution as mentioned in this paper, where natural materials or waste products from certain industries with a high capacity for heavy metals can be obtained, employed and disposed of with little cost.
Journal ArticleDOI
Physico-chemical treatment techniques for wastewater laden with heavy metals
TL;DR: In this article, the technical applicability of various physico-chemical treatments for the removal of heavy metals such as Cd(II), Cr(III, Cr(VI), Cu(II, Ni(II) and Zn(II).
Journal ArticleDOI
Removal of heavy metal ions from wastewater by chemically modified plant wastes as adsorbents: A review
TL;DR: In this review, an extensive list of plant wastes as adsorbents including rice husks, spent grain, sawdust, sugarcane bagasse, fruit wastes, weeds and others has been compiled and some of the treated adsorbent show good adsorption capacities.
Journal ArticleDOI
Removal of Hexavalent Chromium-Contaminated Water and Wastewater: A Review
TL;DR: A survey of removal techniques for Cr(VI)-contaminated aqueous solutions is given in this article, with a particular focus on adsorption, membrane filtration, ion exchange, and electrochemical treatment methods.