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Photoremediation of natural leachate from a municipal solid waste site in a pilot-scale bubble column reactor

Paper ID Volume ID Publish Year Pages File Format Full-Text
52455 46875 2007 6 PDF Available
Title
Photoremediation of natural leachate from a municipal solid waste site in a pilot-scale bubble column reactor
Abstract

An 18-litre pilot-scale bubble column photoreactor has been used to carry out the mineralisation of a municipal solid waste dirty brown leachate. Rate data collected at 300 K and atmospheric pressure with titania particles suspended in upward flowing oxidising air through a stationary liquid phase suggested that the mineralisation of humic compounds was accompanied by a parallel hydrolytic photodecomposition of nitrogenous matter to NH4+ ions. The total organic carbon (TOC) reduction rate followed a Langmuir–Hinshelwood kinetics, while NH4+ ions production is competitively inhibited at high TOC concentration (>35 mM). Photoremediation was also attended by significant (50–70%) decolourisation. The treated leachate may be recycled for agricultural use.

Keywords
Photoremediation; Titania; Bubble column reactor; Total organic carbon; Municipal solid waste leachate
First Page Preview
Photoremediation of natural leachate from a municipal solid waste site in a pilot-scale bubble column reactor
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 12, December 2007, Pages 1917–1922
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis