Heavy metal precipitation by polycation-polyanion complex of PEI and its phosphonomethylated derivative [An article from: Journal of Hazardous Materials]
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By: R.R. Navarro, S. Wada and K. Tatsumi
Format: Digital
From: Elsevier
From: Elsevier
Product Details:
Catalog: Book
Media: Digital
Format: HTML
Catalog: Book
Media: Digital
Format: HTML
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This digital document is a journal article from Journal of Hazardous Materials, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
The removal of various heavy metal ions such as Cu^2^+, Co^2^+, Zn^2^+, Ni^2^+ and Pb^2^+ from aqueous solutions by precipitation with polyelectrolyte complex of PPEI and PEI was conducted. Heavy metal binding with PPEI was initially allowed to occur and then upon equilibration, PEI was added to initiate precipitation of the polyelectrolyte complex together with the heavy metal ion. The PPEI-PEI system was found effective for heavy metal scavenging purposes even in the presence of high concentrations of non-transition metal ions like Na^+. Heavy metal concentration may be reduced beyond emission standards for industrial wastewaters. The PPEI-PEI polyelectrolyte complex was found to be more effective than traditional precipitation methods for the treatment of a representative electroless Ni plating waste solution.
Description:
The removal of various heavy metal ions such as Cu^2^+, Co^2^+, Zn^2^+, Ni^2^+ and Pb^2^+ from aqueous solutions by precipitation with polyelectrolyte complex of PPEI and PEI was conducted. Heavy metal binding with PPEI was initially allowed to occur and then upon equilibration, PEI was added to initiate precipitation of the polyelectrolyte complex together with the heavy metal ion. The PPEI-PEI system was found effective for heavy metal scavenging purposes even in the presence of high concentrations of non-transition metal ions like Na^+. Heavy metal concentration may be reduced beyond emission standards for industrial wastewaters. The PPEI-PEI polyelectrolyte complex was found to be more effective than traditional precipitation methods for the treatment of a representative electroless Ni plating waste solution.