Removal properties of crosslinked poly(2-acrylamido glycolic acid) for trace heavy metal ions: Effect of pH, temperature, contact time, and salinity on the adsorption behavior

2003 ◽  
Vol 88 (11) ◽  
pp. 2614-2621 ◽  
Author(s):  
Bernabé L. Rivas ◽  
Benita Quilodrán ◽  
Eduardo Quiroz
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Contact Time ◽  
Heavy Metal Ions ◽  
Glycolic Acid ◽  
Adsorption Behavior ◽  
Effect Of Ph

Bioremediation of heavy metal contaminated aqueous solution by using red algae Porphyra leucosticta

2015 ◽  
Vol 72 (9) ◽  
pp. 1662-1666 ◽  
Author(s):  
Jianjun Ye ◽  
Henglin Xiao ◽  
Benlin Xiao ◽  
Weisheng Xu ◽  
Linxia Gao ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Red Algae ◽  
Contact Time ◽  
Heavy Metal Ions ◽  
Industrial Effluent ◽  
Optimal Conditions ◽  
Removal Capacity ◽  
Experimental Parameters ◽  
Biomass Dosage

Bioremediation is an effective process for the removal and recovery of heavy metal ions from aqueous solutions. In this study, red algae Porphyra leucosticta was examined to remove Cd(II) and Pb(II) ions from wastewater through biological enrichment and biological precipitation. The experimental parameters that affect the bioremediation process such as pH, contact time and biomass dosage were studied. The maximum bioremediation capacity of metal ions was 31.45 mg/g for Cd(II) and 36.63 mg/g for Pb(II) at biomass dosage 15 g/L, pH 8.0 and contact time 120 minutes containing initial 10.0 mg/L of Cd(II) and 10.0 mg/L of Pb(II) solution. Red algae Porphyra leucosticta biomass was efficient at removing metal ions of 10.0 mg/L of Cd(II) and 10.0 mg/L of Pb(II) solution with bioremediation efficiency of 70% for Cd(II) and 90% for Pb(II) in optimal conditions. At the same time, the removal capacity for real industrial effluent was gained at 75% for 7.6 mg/L Cd(II) and 95% for 8.9 mg/L Pb(II). In conclusion, it is demonstrated that red algae Porphyra leucosticta is a promising, efficient, cheap and biodegradable sorbent biomaterial for reducing heavy metal pollution in the environment and wastewater.

Adsorption behavior of heavy metal ions on a polymer-immobilized amphoteric biosorbent: Surface interaction assessment

2021 ◽  
Vol 403 ◽  
pp. 123801
Author(s):  
Chaofan Zheng ◽  
Qinzhen Wu ◽  
Xuebin Hu ◽  
Yongjuan Wang ◽  
Yi Chen ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Surface Interaction ◽  
Adsorption Behavior
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