Reduction of toxicity of antimicrobial compounds by degradation processes using activated sludge, gamma radiation, and UV

被引：20

作者：

Kim, Hyun Young ^{[1
,3
]}

Jeon, Junho ^{[2
]}

Yu, Seungho ^{[3
]}

Lee, Myunjoo ^{[3
]}

Kim, Tae-Hun ^{[1
,3
]}

Kim, Sang D. ^{[1
]}

机构：

[1] Gwangju Inst Sci & Technol GIST, Sch Environm Sci & Engn, Kwangju 500712, South Korea

[2] Swiss Fed Inst Aquat Sci & Technol, Eawag, CH-8600 Dubendorf, Switzerland

[3] Korea Atom Energy Res Inst, Adv Radiat Technol Inst, Jeongeup 580185, Jeonbuk, South Korea

来源：

CHEMOSPHERE | 2013年 / 93卷 / 10期

关键词：

Antimicrobials; gamma-irradiation; UV; Activated sludge; Pseudokirchneriella subcapitata; Toxicity change; WASTE-WATER TREATMENT; AQUATIC ENVIRONMENT; ALGAL TOXICITY; SULFA DRUGS; ANTIBIOTICS; REMOVAL; TETRACYCLINE; FATE; PHARMACEUTICALS; SORPTION;

D O I：

10.1016/j.chemosphere.2013.08.091

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The occurrence and persistence of pharmacologically active compounds in the environment has been an increasingly important issue. The objectives of this study were to investigate the decomposition of aqueous antimicrobial compounds using activated sludge, gamma-irradiation, and UV treatment, and to evaluate the toxicity towards green algae, Pseudokirchneriella subcapitata, before and after treatment. Tetracycline (TCN), lincomycin (LMC) and sulfamethazine (SMZ) were used as target compounds. Gamma (gamma)-irradiation showed the highest removal efficiency for all target compounds, while UV and activated sludge treatment showed compound-dependent removal efficiencies. TCN and SMZ were well degraded by all three treatment methods. However, LMC showed extremely low removal efficiency for UV and activated sludge treatments. Overall, the algal toxicity after degradation processes was significantly decreased, and was closely correlated to removal efficiency. However, in the case of gamma-irradiated TCN, UV and activated sludge treated LMC as well as sludge treated SMZ, the observed toxicity was higher than expected, which indicates the substantial generation of byproducts or transformed compounds of a greater toxicity in the treated sample. Consequently, gamma-radiation treatment could be an effective method for removal of recalcitrant compounds such as antibiotics. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：2480 / 2487

页数：8