scholarly journals Environmentally friendly chitosan/PEI-grafted magnetic gelatin for the highly effective removal of heavy metals from drinking water

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Bingbing Li ◽  
Feng Zhou ◽  
Kai Huang ◽  
Yipei Wang ◽  
Surong Mei ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Drinking Water ◽  
Environmentally Friendly ◽  
Effective Removal ◽  
Highly Effective ◽  
Removal Of Heavy Metals

scholarly journals A novel carboxylic-functional indole-based aerogel for highly effective removal of heavy metals from aqueous solution via synergistic effects of face–point and point–point interactions

RSC Advances ◽  
2019 ◽  
Vol 9 (43) ◽  
pp. 24875-24879 ◽  
Author(s):  
Li Yang ◽  
Peng Yang ◽  
Yuanchi Ma ◽  
Guanjun Chang
Keyword(s):  
Heavy Metals ◽  
Aqueous Solution ◽  
Synergistic Effects ◽  
Point Interactions ◽  
Effective Removal ◽  
Highly Effective ◽  
Removal Of Heavy Metals ◽  
New Type

A new type of carboxylic-functional indole-based aerogel (CHIFA) has been successfully prepared, which possessed highly effective removal of heavy metals from aqueous solution through the synergistic effects of face–point and point–point interactions.

Highly effective removal of heavy metals by polymer-based zirconium phosphate: A case study of lead ion

2007 ◽  
Vol 310 (1) ◽  
pp. 99-105 ◽  
Author(s):  
B.C. Pan ◽  
Q.R. Zhang ◽  
W.M. Zhang ◽  
B.J. Pan ◽  
W. Du ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Zirconium Phosphate ◽  
Lead Ion ◽  
Effective Removal ◽  
Highly Effective ◽  
Removal Of Heavy Metals

scholarly journals Assessment of sulfonated homo and co-polyimides incorporated polysulfone ultrafiltration blend membranes for effective removal of heavy metals and proteins

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Mohammad A. Jafar Mazumder ◽  
Panchami H. Raja ◽  
Arun M. Isloor ◽  
Muhammad Usman ◽  
Shakhawat H. Chowdhury ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Effective Removal ◽  
Blend Membranes ◽  
Removal Of Heavy Metals

Use of citric acid for heavy metals extraction from contaminated sewage sludge for land application

2006 ◽  
Vol 54 (9) ◽  
pp. 129-135 ◽  
Author(s):  
D. del Mundo Dacera ◽  
S. Babel
Keyword(s):  
Heavy Metals ◽  
Citric Acid ◽  
Land Application ◽  
Metal Extraction ◽  
Lead Removal ◽  
Inorganic Matter ◽  
Highly Effective ◽  
Removal Of Heavy Metals ◽  
Anaerobically Digested Sludge ◽  
Extracting Agents

Recent studies revealed that organic acids such as citric and oxalic acids seemed to be more promising as chemical extracting agents for removal of heavy metals from contaminated sludge, since they are biodegradable and can attain a higher metal extraction efficiency at mildly acidic pH compared to other extracting agents. Results of a lab-scale study on the efficiency of citric acid in the extraction of chromium (Cr), copper (Cu), lead (Pb), nickel (Ni) and zinc (Zn) from anaerobically digested sludge, revealed that citric acid seemed to be highly effective in extracting Cr (at 100%), Cu (at 88%), Ni (at 98%) and Zn (at 100%) at pH 2.33, mostly at 5 days leaching time except for Cu and Zn, which are at 1 day and 2 h contact times respectively. Lead removal at the same pH was also high at 95% but at a longer leaching time of 11 days. At pH 3, citric acid seemed to be highly effective in extracting Pb (at 100%) at 1 day leaching time, although higher removals were also attained for Ni (70%) and Zn (80%) at only 2 h leaching time. Chemical speciation studies showed that Cr, Cu and Ni in the sludge sample seem to predominate in residual fractions, while Pb and Zn were found mostly bound to organic and inorganic matter forms, hence the potential of the sludge for land application.

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