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蒽醌染料中间体催化强化偶氮染料生物脱色

Release Time:2019-03-11  Hits:

Indexed by: Journal Article

Date of Publication: 2008-07-15

Journal: 环境科学

Included Journals: CSCD、ISTIC、PKU、PubMed、SCIE

Volume: 29

Issue: 7

Page Number: 1986-1991

ISSN: 0250-3301

Key Words: 醌还原菌;偶氮染料;溴氨酸;氧化还原介体;生物脱色;废物资源化

Abstract: 考察了醌还原菌群利用6种蒽醌染料中间体对偶氮染料生物脱色的催化强化作用.结果表明,溴氨酸(1-氨基-4-溴蒽醌-2-磺酸, BAA)的催化强化效果最好;游离态菌群以BAA作为氧化还原介体可催化强化多种偶氮染料的生物脱色,其中对酸性大红3R脱色的适宜条件为pH 6~9之间;外加葡萄糖浓度400~600 mg/L;BAA浓度19~34.2 mg/L,染料起始浓度≤900 mg/L.在此条件下,最大脱色率约为95%、达到最大脱色率的时间<7 h.同时发现,投加氧化还原介体BAA浓度为38~57mg/L时,固定化菌群降解酸性大红3R(180 mg/L)的最大脱色率在14 h内达到93%;在不补加BAA的情况下,固定化菌群经7次循环使用后,脱色率仍保持在85%以上.

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