Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/6475
Title: Arsenite and arsenate removals from groundwater by electrocoagulation using iron ball anodes: Influence of operating parameters
Authors: Şık, E.
Demirbaş, Erhan
Gören, Ayşegül Yağmur
Öncel, Mehmet Salim
Kobya, Mehmet
Gören, Ayşegül Yağmur
Izmir Institute of Technology. Environmental Engineering
Keywords: Arsenite and arsenate removals
Electrocoagulation
Groundwater
Iron ball electrode
Operating cost
Issue Date: Aug-2017
Publisher: Elsevier Ltd.
Source: Şık, E., Demirbaş, E., Gören, A. Y., Öncel, M. S., and Kobya, M. (2017). Arsenite and arsenate removals from groundwater by electrocoagulation using iron ball anodes: Influence of operating parameters. Journal of Water Process Engineering, 18, 83-91. doi:10.1016/j.jwpe.2017.06.004
Abstract: Removals of arsenite (As(III)) and arsenate (As(V)) from groundwater by a cylindrical packed-bed electrocoagulation (EC) reactor using Fe ball anodes were investigated in this study. Effects of some operating parameters such as initial pH (pHi of 6.5–8.5), applied current (i of 0.075–0.30 A), initial concentration (Co of 30–200 μg/L), diameter of iron ball (dp of 5.0–10.0 mm), height of anode balls in the reactor (h of 2–8 cm) and airflow rate (Qair of 0.0–6.0 L/min) on the removal efficiency of arsenic were evaluated. The removal efficiency of arsenic decreased with increase in concentrations of arsenic from 30 to 200 μg/L while its removal efficiency increased with increase in operating time, applied current, height of anode in the reactor, and airflow rate. The optimum operating conditions for effective As(III) and As(V) removals to meet the permissible level of arsenic effluent concentration of <10 μg/L were determined as 0.3 A, 14 min of EC time for As(III) and 12 min for As(V), a pHi of 7.5, Co of 200 μg/L, dp of 7.5 mm, h of 7.5 cm and Qair of 6 L/min, respectively. Arsenic removal efficiency, energy and electrode consumptions, operating cost, charge loading and arsenic removed capacity per amount of electrochemically generated Fe at the optimum conditions were also calculated as 96.0%, 1.442 kWh/m3, 0.0752 kg/m3, 0.612 $/m3, 252 C and 2.55 μg/mg Fe (0.762 μg/C) for As(III) removal and 95.8%, 1.386 kWh/m3, 0.0628 kg/m3, 0.546 $/m3, 216 C and 3.05 μg/mg Fe (0.887 μg/C) for As(V) removal, respectively.
URI: http://doi.org/10.1016/j.jwpe.2017.06.004
http://hdl.handle.net/11147/6475
ISSN: 2214-7144
2214-7144
Appears in Collections:Environmental Engineering / Çevre Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

Files in This Item:
File Description SizeFormat 
6475.pdfMakale984.97 kBAdobe PDFThumbnail
View/Open
Show full item record

CORE Recommender

SCOPUSTM   
Citations

14
checked on Sep 18, 2021

WEB OF SCIENCETM
Citations

17
checked on Sep 18, 2021

Page view(s)

30
checked on Sep 23, 2021

Download(s)

24
checked on Sep 23, 2021

Google ScholarTM

Check

Altmetric


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.