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Titolo:
Biodegradation potential of photocatalyzed surfactant washwater
Autore:
Maillacheruvu, K; Buck, L; Lee, E;
Indirizzi:
Bradley Univ, Dept Civil Engn & Construct, Peoria, IL 61625 USA Bradley Univ Peoria IL USA 61625 l Engn & Construct, Peoria, IL 61625 USA Suffolk Cty Community Coll, Long Isl City, NY USA Suffolk Cty Community Coll Long Isl City NY USA l, Long Isl City, NY USA Lawler Matusky & Skelly Engineers, Pearl River, NY USA Lawler Matusky & Skelly Engineers Pearl River NY USA Pearl River, NY USA
Titolo Testata:
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
fascicolo: 6, volume: 36, anno: 2001,
pagine: 883 - 895
SICI:
1093-4529(2001)36:6<883:BPOPSW>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
ULTRAVIOLET-RADIATION; WATER; DEGRADATION; PHOTODEGRADATION; DECONTAMINATION; SUSPENSIONS; DESTRUCTION;
Keywords:
surfactants; naphthalene; hazardous waste; UV; titanium; dioxide; activated sludge; bioremedation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Maillacheruvu, K Bradley Univ, Dept Civil Engn & Construct, Peoria, IL 61625 USA Bradley Univ Peoria IL USA 61625 t, Peoria, IL 61625 USA
Citazione:
K. Maillacheruvu et al., "Biodegradation potential of photocatalyzed surfactant washwater", J ENVIR S A, 36(6), 2001, pp. 883-895

Abstract

Enhanced release of hydrophobic compounds from a soil matrix can be achieved by use of soil-washing or soil-flushing using various surfactants. However, the surfactants used in achieving the desorption of organic contaminants may also cause a problem in subsequent removal/disposal of these contaminants. UV radiation in the presence of TiO2 as a pretreatment step to achieve initial (or partial) breakdown of naphthalene and Sodium Dodecyl Sulfate (SDS) using batch experiments indicated that 56% to 88% naphthalene degradation occurred within 30 minutes to one hour. Preliminary results on the estimate of the batch aerobic biodegradation potential of photocatalyzed washwater containing naphthalene and SDS suggested that SDS was the major carbon and energy source for an activated sludge enrichment culture and an enrichment culture obtained from microorganisms ata contaminated site. Continuous-flow stirred tank reactors (CSTRs) wit with a solids retention time (SRT) of 4 days were not effective, but an SRT of8 days was successful in biodegrading the naphthalene and surfactant. These results indicated that photocatalytic treatment as a pre-treatment step followed by a biodegradation step may offer potential in cleaning up surfactant washwaters containing organic contaminants.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/10/20 alle ore 15:13:17