期刊
CHEMICAL ENGINEERING JOURNAL
卷 318, 期 -, 页码 161-170出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2016.06.031
关键词
EDDS; Acute and chronic toxicity; Economic assessment; Municipal wastewater effluent; Photo-Fenton process; Circumneutral pH
资金
- Regional Government of Andalusia [RNM-1739]
- SERC-Chile FONDAP Project [15110019]
This study shows solar photo-Fenton combined with nanofiltration (NF) to treat microcontaminants (MCs) in actual MWTP effluents. Photo-Fenton was operated at circumneutral pH using (S,S)-Ethylened iamine-N,N'-disuccinic acid trisodium salt (EDDS) as the iron complexing agent (Fe:EDDS in a molar ratio of 1:2) and compared with classical photo-Fenton at pH3. Starting H2O2 concentration was 50 mg/L and Fe was 0.1 mM or 0.2 mM. MC degradation was over 90% in all cases and 35 different MCs were monitored by Liquid Chromatography-Mass Spectrometry enabling the two processes to be compared under real conditions. NF pretreatment enabled photocatalysis to be run at lower flow rates and with higher starting concentrations reducing the surface area of solar collectors and reagents needed. Acute and chronic toxicity tests were also carried out before and at the end of each treatment evaluated and it seemed clear that MC degradation did not produce intermediates with any significant effect on toxicity. In addition, a detailed economic assessment was also performed. Operating costs were higher at circumneutral pH (0.76 (sic)/m(3)) with EDDS than with classical photo-Fenton at pH3 (0.48 (sic)/m(3)). (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据