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Life cycle assessment of a coupled solar photocatalytic-biological process for wastewater treatment.
Water Res. 2006 Nov; 40(19):3533-40.WR

Abstract

A comparative life cycle assessment (LCA) of two solar-driven advanced oxidation processes, namely heterogeneous semiconductor photocatalysis and homogeneous photo-Fenton, both coupled to biological treatment, is carried out in order to identify the environmentally preferable alternative to treat industrial wastewaters containing non-biodegradable priority hazardous substances. The study is based on solar pilot plant tests using alpha-methyl-phenylglycine as a target substance. The LCA study is based on the experimental results obtained, along with data from an industrial-scale plant. The system under study includes production of the plant infrastructure, chemicals, electricity, transport of all these materials to the plant site, management of the spent catalyst by transport and landfilling, as well as treatment of the biodegradable effluent obtained in a conventional municipal wastewater treatment plant, and excess sludge treatment by incineration. Nine environmental impact categories are included in the LCA: global warming, ozone depletion, human toxicity, freshwater aquatic toxicity, photochemical ozone formation, acidification, eutrophication, energy consumption, and land use. The experimental results obtained in the pilot plant show that solar photo-Fenton is able to obtain a biodegradable effluent much faster than solar heterogeneous photocatalysis, implying that the latter would require a much larger solar collector area in an industrial application. The results of the LCA show that, an industrial wastewater treatment plant based on heterogeneous photocatalysis involves a higher environmental impact than the photo-Fenton alternative, which displays impact scores 80-90% lower in most impact categories assessed. These results are mainly due to the larger size of the solar collector field needed by the plant.

Authors+Show Affiliations

Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16989886

Citation

Muñoz, Ivan, et al. "Life Cycle Assessment of a Coupled Solar Photocatalytic-biological Process for Wastewater Treatment." Water Research, vol. 40, no. 19, 2006, pp. 3533-40.
Muñoz I, Peral J, Ayllón JA, et al. Life cycle assessment of a coupled solar photocatalytic-biological process for wastewater treatment. Water Res. 2006;40(19):3533-40.
Muñoz, I., Peral, J., Ayllón, J. A., Malato, S., Passarinho, P., & Domènech, X. (2006). Life cycle assessment of a coupled solar photocatalytic-biological process for wastewater treatment. Water Research, 40(19), 3533-40.
Muñoz I, et al. Life Cycle Assessment of a Coupled Solar Photocatalytic-biological Process for Wastewater Treatment. Water Res. 2006;40(19):3533-40. PubMed PMID: 16989886.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Life cycle assessment of a coupled solar photocatalytic-biological process for wastewater treatment. AU - Muñoz,Ivan, AU - Peral,José, AU - Ayllón,José Antonio, AU - Malato,Sixto, AU - Passarinho,Paula, AU - Domènech,Xavier, Y1 - 2006/09/20/ PY - 2006/04/28/received PY - 2006/07/11/revised PY - 2006/08/08/accepted PY - 2006/9/23/pubmed PY - 2007/2/6/medline PY - 2006/9/23/entrez SP - 3533 EP - 40 JF - Water research JO - Water Res VL - 40 IS - 19 N2 - A comparative life cycle assessment (LCA) of two solar-driven advanced oxidation processes, namely heterogeneous semiconductor photocatalysis and homogeneous photo-Fenton, both coupled to biological treatment, is carried out in order to identify the environmentally preferable alternative to treat industrial wastewaters containing non-biodegradable priority hazardous substances. The study is based on solar pilot plant tests using alpha-methyl-phenylglycine as a target substance. The LCA study is based on the experimental results obtained, along with data from an industrial-scale plant. The system under study includes production of the plant infrastructure, chemicals, electricity, transport of all these materials to the plant site, management of the spent catalyst by transport and landfilling, as well as treatment of the biodegradable effluent obtained in a conventional municipal wastewater treatment plant, and excess sludge treatment by incineration. Nine environmental impact categories are included in the LCA: global warming, ozone depletion, human toxicity, freshwater aquatic toxicity, photochemical ozone formation, acidification, eutrophication, energy consumption, and land use. The experimental results obtained in the pilot plant show that solar photo-Fenton is able to obtain a biodegradable effluent much faster than solar heterogeneous photocatalysis, implying that the latter would require a much larger solar collector area in an industrial application. The results of the LCA show that, an industrial wastewater treatment plant based on heterogeneous photocatalysis involves a higher environmental impact than the photo-Fenton alternative, which displays impact scores 80-90% lower in most impact categories assessed. These results are mainly due to the larger size of the solar collector field needed by the plant. SN - 0043-1354 UR - https://www.unboundmedicine.com/medline/citation/16989886/Life_cycle_assessment_of_a_coupled_solar_photocatalytic_biological_process_for_wastewater_treatment_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0043-1354(06)00449-0 DB - PRIME DP - Unbound Medicine ER -