Removal and Recovery of Heavy Metals from Industrial Wastewater by Precipitation and Foam Separation Using Lime and Casein

2017 ◽  
Vol 11 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Maralmaa Byambaa ◽  
Erdenechimeg Dolgor ◽  
Koichiro Shiomori ◽  
Yoshihiro Suzuki
1992 ◽  
Vol 26 (9-11) ◽  
pp. 2149-2152 ◽  
Author(s):  
A. Grappelli ◽  
L. Campanella ◽  
E. Cardarelli ◽  
F. Mazzei ◽  
M. Cordatore ◽  
...  

Experiments on the real possibility of employing microorganisms to capture inorganic polluting substances, mainly heavy metals from urban and industrial wastes, are running using bacteria biomass. Many strains of Arthrobacter spp., gram-negative bacteria, diffused in the soil also inacondition of environmental stresses, have been proved to be particulary effective in heavy metal capture (Cd, Cr, Pb, Cu, Zn). The active and passive processes in accumulation of metals by bacteria were studied. Our experiments have been done on fluid biomass and on a membrane both for practical use and for an easy recovery.


Author(s):  
Rakesh Shrestha ◽  
Sagar Ban ◽  
Sijan Devkota ◽  
Sudip Sharma ◽  
Rajendra Joshi ◽  
...  

1996 ◽  
Vol 33 (10-11) ◽  
pp. 139-147 ◽  
Author(s):  
Dongye Zhao ◽  
Arup K. Sengupta

This paper reports salient features of a new fixed-bed sorption process in regard to ultimate removal and recovery of phosphate from municipal and industrial wastewater. The sorbent, referred to as polymeric ligand exchanger(PLE), is essentially a copper(II) loaded specialty chelating polymer. Laboratory experiments have demonstrated that the PLE: can remove phosphate selectively from municipal and synthetic wastewater; is amenable to efficient regeneration; and provides opportunities to recover phosphate and reuse the spent regenerant for multiple numbers of cycles.


RSC Advances ◽  
2015 ◽  
Vol 5 (37) ◽  
pp. 29145-29152 ◽  
Author(s):  
Yunchuan Long ◽  
Qiao Li ◽  
Jiangxia Ni ◽  
Fei Xu ◽  
Heng Xu

This study investigated the biosorption of heavy metals from industrial wastewater using mushrooms at small-sized pilot-scale.


2014 ◽  
Vol 4 (1) ◽  
pp. 29-39 ◽  
Author(s):  
Rajender Singh Rana ◽  
Vikash Kandari ◽  
Prashant Singh ◽  
Sanjay Gupta

2013 ◽  
Vol 2 (1) ◽  
pp. 150 ◽  
Author(s):  
Jamil Rima ◽  
Karine Assaker

<p>In this study, B-Cyclodextrinn polymerized with beetroot fibers (Bio-polymer), was prepared and applied to the removal of organic and inorganic contaminants from wastewater. An investigation into the use of cross-linked cyclodextrin polyurethanes copolymerised with beetroot fibers as adsorbents for organic pollutants and heavy metals has yielded very useful results which may have an impact in future water treatment applications.</p> The Biopolymer was tested in water contaminated by dyes, polycyclic aromatic hydrocarbons (PAH) and heavy metals. The effectiveness to eliminate dyes such as methylene blue and Rhodamine B with concentrations around 100 ppm was more than 99%, while the pyrene,which was chosen as an example among PAHs, showed a potential of elimination exceeding the 97% for solutions of 10 ppm. Also, heavy metals, such as Lead, Zn, and Cu, were tested and showed an efficacy exceeding the 99.8%. The results indicated that the biopolymer developed in this study has the potential to be a promising material for the removal of mixed pollutants from industrial wastewater or from contaminated groundwater.


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