Open Journal Systems

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Open Journal Systems

Treating leachate by Fenton oxidation

Roger Iván Méndez Novelo, Refugio Bernardo García Reyes, Elba René Castillo Borges, María Rosa Sauri Riancho

Abstract

Leachates are formed from liquids, mainly rainwater, percolating through solid wastes during stabilisation. Their composition is variable and highly toxic; leachate treatment is therefore a complex task. Leachates represent a high risk to health due to the Yucatan Peninsula’s highly permeable soil. The results are presented from applying the Fenton process to treating leachate from the sanitary Merida landfill, Yucatan, Mexico. The Fenton process consists of treating the contaminant load with an H2O2 and FeSO4 combination in acidic conditions. Optimal reaction time, pH value, Fenton reagent dose, post treatment coagulation – flocculation doses and increased biodegradability index were all determined. Optimal oxidation conditions and doses were 202+ minute contact time, 4 pH, 600 mg/L H2O2 concentration and 1,000 mg/L Fe. Average organic matter removal rate, measured as CODS and TOC, were 78% and 87% respectively. The biodegradability index increased from 0.07 to 0.11 during the Fenton process and up to 0.13 when the Fenton process was followed by coagulation-flocculation.

Keywords

Fenton; leachate; physicochemical treatment; biodegradability index

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ISSN: 0120-5609 (print)
ISSN: 2248-8723 (online)

Indexed in:

	IBN Publindex Publindex is a Colombian bibliographic index for classifying, updating, rating and certifying scientific and technological publications. It is recognised by COLCIENCIAS and ICFES in Colombia.
	Directory of Open Access Journals DOAJ increases the visibility and ease of use of open access scientific and scholarly journals, aims to be comprehensive and cover all that journals that use a quality control system to guarantee the content. It's a one stop shop for users of OA Journals.
	SciELO Colombia SciELO Colombia is a virtual library for Latin-America, the Caribbean, Spain and Portugal, which was created by FAPESP in 1997 in Sao Pablo, Brazil. It is currently being managed in Colombia by the Universidad Nacional de Colombia.
	e-Revistas This is a web page providing open access to Spanish and Latin-American electronic journals. It was created in Spain.
	Science Citation Index Expanded^TM Thomson Reuters SCI is a prestigious online indexing system which incorporates bibliographic and citation data of scientific publications worldwide.
	Scopus Scopus is a bibliographic database publishing summaries and references concerning articles from scientific journals. It covers around 19,500 titles by more than 5,000 international editors, including coverage of about 16,500 journals.
	Latindex Latindex is the product of cooperation by a network of Latin-American institutions operating in a coordinated way to gather and disseminate bibliographic information about serialised scientific publications produced in the region.
	Redalyc Redalyc stands for the Latin-American, Caribbean, Spanish and Portuguese Scientific journals’ Network (Red de Revistas Científicas de América Latina y el Caribe, España y Portugal) sponsored by the Universidad Autónoma in México.
	Dialnet Dialnet is a webpage for disseminating Spanish-speaking scientific production; it began operating in 2001. It specializes in human and social sciences. Its open access database was created by the Universidad de La Rioja (Spain).
See more indexes here.