The oxidation of As(III) in groundwater using biological manganese removal filtration columns

Yang, Hong, Sun, Wenyong, Ge, Huoqing and Yao, Renda (2015) The oxidation of As(III) in groundwater using biological manganese removal filtration columns. Environmental Technology, 36 21: 2732-2739. doi:10.1080/09593330.2015.1045039


Author Yang, Hong
Sun, Wenyong
Ge, Huoqing
Yao, Renda
Title The oxidation of As(III) in groundwater using biological manganese removal filtration columns
Journal name Environmental Technology   Check publisher's open access policy
ISSN 1479-487X
Publication date 2015-06-09
Year available 2015
Sub-type Article (original research)
DOI 10.1080/09593330.2015.1045039
Open Access Status
Volume 36
Issue 21
Start page 2732
End page 2739
Total pages 8
Place of publication Oxfordshire, United Kingdom
Publisher Taylor and Francis
Collection year 2016
Language eng
Formatted abstract
Arsenic is known as a toxic element to humans, and has been reported to co-exist with iron and manganese in groundwater worldwide. The typical method for arsenic removal from groundwater is to oxidize trivalent (As(III)) to pentavalent (As(V)) followed by the As(V) removal. This study aims to evaluate the oxidization efficiency of As(III) in a mature biological manganese (Mn2+) removal filtration system with different elevated influent As(III) concentrations. The effects of influent Mn2+ concentrations, influent As(III) concentrations, filtration rates and dissolved oxygen (DO) levels on the efficiency of As(III) oxidation were assessed. The results showed that As(III) oxidation can be simultaneously achieved with removing Mn2+ in the filtration system. The oxidation efficiency was not impacted by increasing the influent As(III) concentration up to nearly 2500 µg L−1, but the filtration rate was limited at 11 m h−1 for maintaining the effluent As(III) concentration below 10 µg L−1. The oxidation process followed first-order kinetics with the constant reaching 0.56–0.61 min−1. The As(III) oxidation process was most likely to be mediated by the bacterial community initially developed for Mn2+ removal in the filtration system, which performed the catalytic oxidation for As(III).
Keyword As(III) oxidation
Biological manganese removal filtration columns
Catalytic oxidation
Groundwater
Oxidation kinetics
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
Advanced Water Management Centre Publications
 
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