4.7 Article

Influence of algal organic matter of Microcystis aeruginosa on ferrate decay and MS2 bacteriophage inactivation

期刊

CHEMOSPHERE
卷 236, 期 -, 页码 -

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2019.124727

关键词

Fe(VI); Intracellular algal organic matter; Extracellular algal organic matter; Enteric viruses; MS2; Inactivation

资金

  1. program for the Natural Science Foundation of China [51678255, 51178117]
  2. Key Projects of Enterprise and University Cooperation in Fujian [2018Y4010]
  3. Quanzhou City Sciences & Technology Program of China [2018C082R]
  4. Project for Postgraduates' Innovative Fund in Scientific Research of Huaqiao University

向作者/读者索取更多资源

Surface water contaminated with algae and with enteric viruses is a global problem. When surface water is used as a drinking water source, it is important to know the influence of algal organic matter on the disinfection of viruses. In this work, we studied the disinfection efficacy of ferrate and the influence of algal organic matter on the disinfection. We determined the MS2 inactivation kinetics by ferrate under three pH conditions (7, 8, and 8.7). The experimental results and pH-dependent calculation suggest that H2FeO4 and HFeO4- are 1935 and 8 times as effective as FeO42- in MS2 inactivation. We also found that intracellular algal organic matter (IAOM) had a stronger effect on MS2 inactivation kinetics than extracellular algal organic matter (EAOM) suggesting that IAOM led to higher consumption of Fe(VI) compared to EAOM. At pH 8.7, while significant consumption of FeO42- by as low as 8 mg C/L of EAOM and 2 mg C/L. of IAOM was detected, MS2 inactivation was negatively influenced only when 13 mg C/L of IAOM present. This study showed that it is important to control pH and to determine the concentration of algal organic matter if ferrate is used for disinfection of surface water contaminated with algae. (C) 2019 Elsevier Ltd. All rights reserved.

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