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Performance and mechanism in binding of Reactive Orange 16 to various types of sludge

Paper ID Volume ID Publish Year Pages File Format Full-Text
4838 249 2006 7 PDF Available
Title
Performance and mechanism in binding of Reactive Orange 16 to various types of sludge
Abstract

Four types of waste sludge were collected from a drinking water treatment plant (waterworks sludge; WS), sewage treatment plant (sewage sludge; SS), anaerobic digestion (digested sludge; DS) and landfill site (landfill sludge; LS). These sludges were evaluated as biosorbents for the removal of Reactive Orange 16 (RO 16). The maximum sorption capacities of the four waste sludges estimated using the Langmuir equation at pH 2 were in order LS (159.0 ± 6.0 mg g−1) > SS (114.7 ± 4.7 mg g−1) > DS (86.8 ± 4.5 mg g−1) > WS (47.0 ± 5.8 mg g−1). However, the desorption efficiency of LS was insufficient (43.2%) compared with that of SS (90.0%), indicating that the SS has the potential to be regenerated as a biosorbent. From the potentiometric titration and FTIR study, the binding sites present in the SS were considered to be protonated amine groups (–NH3+), which play a role in the electrostatic interaction with the negatively charged sulfonate groups of RO 16.

Keywords
Biosorption; Batch processing; Separation; Affinity; Waterworks sludge; Sewage sludge; Digested sludge; Leachate sludge; Reactive Orange 16
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Performance and mechanism in binding of Reactive Orange 16 to various types of sludge
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 28, Issue 2, 15 February 2006, Pages 208–214
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Price was $35.95
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