Simultaneous removal of fluoride and arsenic from water by hybrid Al-Fe electrocoagulation: process optimization through surface response method

The electrocoagulation process using hybrid aluminum-iron electrode was used for the removal of arsenic and fluoride from water. The operation parameters; current density, initial pH, treatment time, initial concentration of arsenic and fluoride were optimized using the Box Behnken Design. The R 2 v...

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Published inSeparation science and technology Vol. 56; no. 15; pp. 2648 - 2658
Main Authors Nyangi, Magori J., Chebude, Yonas, Kilulya, Kessy F., Andrew, Minu
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 13.10.2021
Taylor & Francis Ltd
Subjects
Aluminium
Aluminum
Arsenic
Current density
Design optimization
Electrocoagulation
fluoride
Fluorides
groundwater
Iron
Operating costs
Parameters
pH effects
Pollutant removal
reduction
Removal
response surface methodology
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Summary:The electrocoagulation process using hybrid aluminum-iron electrode was used for the removal of arsenic and fluoride from water. The operation parameters; current density, initial pH, treatment time, initial concentration of arsenic and fluoride were optimized using the Box Behnken Design. The R 2 values for arsenic and fluoride removal were 0.83 and 0.96, respectively ensure a satisfactory of a developed quadratic model. At the optimized operation parameter of 9.90 mAcm −2 , pH 7.5; the Al-Fe EC reduced 16 mg/L and arsenic 200 µg/L to 1.12 mg/L and 9.60 µg/L, respectively in 50 minutes with an operating cost estimated to 0.99 $/m 3 .
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:0149-6395
1520-5754
DOI:10.1080/01496395.2020.1837877