fulltext.study @t Gmail

Removal of copper(II) ions from aqueous medium by biosorption onto powdered waste sludge

Paper ID Volume ID Publish Year Pages File Format Full-Text
36074 45120 2006 8 PDF Available
Title
Removal of copper(II) ions from aqueous medium by biosorption onto powdered waste sludge
Abstract

Powdered waste sludge (PWS) was used for removal of copper(II) ions from aqueous solution by biosorption. Waste activated sludge obtained from a paint industry wastewater treatment plant was pre-treated with 1% hydrogen peroxide solution dried, ground and sieved to a number of fractions with different particle sizes. Biosorption capacity of pre-treated PWS for Cu(II) ion removal was investigated as function of particle sizes (external surface area), copper(II) and PWS concentrations and also pH using batch biosorption experiments. Biosorbed copper ion concentrations increased with increasing specific external surface area of PWS, initial Cu2+ concentration and pH, but decreased with increasing PWS concentration. Percent copper removal from the solution also increased with increasing external surface area or decreasing particle size of the adsorbent, PWS concentration and pH, but decreased with increasing initial copper ion concentration. The maximum biosorption capacity was 156 mg Cu2+ g PWS−1 when PWS concentration was 0.25 g l−1 with an average particle size of 64 μm. The initial volumetric rate of biosorption also increased with increasing specific external surface area of PWS resulting in nearly 70 mg Cu l−1 h−1 at a specific external surface area of 943 cm2 g−1 with the smallest particle size (53 μm) tested. Optimal pH resulting in maximum biosorption was 5 with a minimum zeta potential (−15.6 mV) on the surface of the PWS particles.

Keywords
Biosorption; copper(II) ions; Powdered waste sludge (PWS)
First Page Preview
Removal of copper(II) ions from aqueous medium by biosorption onto powdered waste sludge
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 41, Issue 5, May 2006, Pages 1047–1054
Authors
, ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us