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Biodegradation of four phthalate esters in sludge.
Chemosphere. 2007 Oct; 69(7):1116-23.C

Abstract

This study investigated the effects of ultrasonic pretreatment and various treatments on the aerobic degradation of four phthalic acid esters (PAEs) such as diethyl phthalate (DEP), benzyl butyl phthalate (BBP), di-n-butyl phthalate (DBP) and di-(2-ethyl hexyl)phthalate (DEHP) in sludge. The effect on PAE degradation of treating sludge with a 20 min sonication period at a power level of 0.1 W ml(-1) was evaluated. The degradation rates of the four PAEs were DBP>BBP>DEP>DEHP. Degradation rate constants (k(1)) and half-lives (t(1/2)) for the four PAEs (50 mg kg(-1)) ranged from 0.182 to 0.379 day(-1) and 1.8 to 3.8 days, respectively. The optimal pH for PAE degradation in sludge was 7.0 at 30 degrees C. PAE degradation was enhanced by the addition of yeast extract, brij 30 or brij 35 and inhibited by the addition of hydrogen peroxide. Our results show that a combination of ultrasonic pretreatment and biodegradation can effectively remove PAE from sludge.

Authors+Show Affiliations

Department of Microbiology, Soochow University, Taipei, Taiwan.No affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

17524449

Citation

Chang, B V., et al. "Biodegradation of Four Phthalate Esters in Sludge." Chemosphere, vol. 69, no. 7, 2007, pp. 1116-23.
Chang BV, Wang TH, Yuan SY. Biodegradation of four phthalate esters in sludge. Chemosphere. 2007;69(7):1116-23.
Chang, B. V., Wang, T. H., & Yuan, S. Y. (2007). Biodegradation of four phthalate esters in sludge. Chemosphere, 69(7), 1116-23.
Chang BV, Wang TH, Yuan SY. Biodegradation of Four Phthalate Esters in Sludge. Chemosphere. 2007;69(7):1116-23. PubMed PMID: 17524449.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Biodegradation of four phthalate esters in sludge. AU - Chang,B V, AU - Wang,T H, AU - Yuan,S Y, Y1 - 2007/05/23/ PY - 2006/09/12/received PY - 2007/04/03/revised PY - 2007/04/04/accepted PY - 2007/5/26/pubmed PY - 2007/12/29/medline PY - 2007/5/26/entrez SP - 1116 EP - 23 JF - Chemosphere JO - Chemosphere VL - 69 IS - 7 N2 - This study investigated the effects of ultrasonic pretreatment and various treatments on the aerobic degradation of four phthalic acid esters (PAEs) such as diethyl phthalate (DEP), benzyl butyl phthalate (BBP), di-n-butyl phthalate (DBP) and di-(2-ethyl hexyl)phthalate (DEHP) in sludge. The effect on PAE degradation of treating sludge with a 20 min sonication period at a power level of 0.1 W ml(-1) was evaluated. The degradation rates of the four PAEs were DBP>BBP>DEP>DEHP. Degradation rate constants (k(1)) and half-lives (t(1/2)) for the four PAEs (50 mg kg(-1)) ranged from 0.182 to 0.379 day(-1) and 1.8 to 3.8 days, respectively. The optimal pH for PAE degradation in sludge was 7.0 at 30 degrees C. PAE degradation was enhanced by the addition of yeast extract, brij 30 or brij 35 and inhibited by the addition of hydrogen peroxide. Our results show that a combination of ultrasonic pretreatment and biodegradation can effectively remove PAE from sludge. SN - 0045-6535 UR - https://www.unboundmedicine.com/medline/citation/17524449/Biodegradation_of_four_phthalate_esters_in_sludge_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(07)00476-6 DB - PRIME DP - Unbound Medicine ER -