Biodegradation of salicylic acid, acetaminophen and ibuprofen by bacteria collected from a full-scale drinking water biofilter

被引：37

作者：

Hasan, Mahmudul ^{[1
]}

Alfredo, Katherine ^{[2
]}

Murthy, Sudhir ^{[3
]}

Riffat, Rumana ^{[1
]}

机构：

[1] George Washington Univ, Dept Civil & Environm Engn, 800 22nd St NW, Washington, DC 20052 USA

[2] Univ S Florida, Dept Civil & Environm Engn, 4202 E Fowler Ave, Tampa, FL 33620 USA

[3] NewHUB, Herndon, VA USA

来源：

JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2021年 / 295卷

关键词：

Salicylic acid; Acetaminophen; Ibuprofen; Biofiltration; Extracellular polymeric substances; Adenosine tri phosphate; EXTRACELLULAR POLYMERIC SUBSTANCES; PERSONAL CARE PRODUCTS; WASTE-WATER; ACTIVATED-SLUDGE; PHARMACEUTICAL RESIDUES; SEASONAL-VARIATION; TREATMENT PLANTS; EPS MATRIX; REMOVAL; DEGRADATION;

D O I：

10.1016/j.jenvman.2021.113071

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study examined the biodegradation of two pharmaceuticals-acetaminophen, and ibuprofen, and one natural organic surrogate-salicylic acid, by bacteria seeded from backwash water collected from a full-scale biofiltration plant. The degradation was studied in the presence of oxygen. Complete removal of salicylic acid was observed in 27-66 h depending on the seasonality of the collected backwash water, while 90-92% acetaminophen removal was observed in more than 225 h. Ibuprofen demonstrated poor removal efficiencies with only 50% biodegradation after 230 h. Adenosine tri phosphate (ATP) in the reactor was found to be linked with the biodegradation rate. ATP was found to be correlated with oxygen uptake rate (OUR). ATP also had a correlation with each of extracellular polymeric substances (EPS), protein and polysaccharides. These results highlight the potential for increasing the biodegradation rates to achieve enhanced contaminant removal.

引用

页数：12

共 119 条

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