TY - GEN
T1 - Evaluating the arsenic removal potential of japanese oak wood biochar in aqueous solutions and groundwater
AU - Niazi, N. K.
AU - Bibi, I.
AU - Shahid, M.
AU - Ok, Y. S.
N1 - Funding Information:
We are thankful to the IFS (Sweden; W/5698-1) for financial support. This work was supported by the National Research Foundation of Korea (NRF) (NRF-2015R1A2A2A11001432). Thanks are extended by Dr Bibi (Ref 3.5 – PAK – 1164117 – GFHERMES-P) to the Alexander von Humboldt Foundation for a Postdoctoral Research Fellowship. The authors thank the members of the Pohang Accelerator Laboratory (PAL), Korea for providing synchrotron user facilities for XAFS spectroscopy experimentation.
Funding Information:
We acknowledge the Swedish International Development Cooperation Agency (Sida) for supporting the DAFWAT program (Contribution: 51170072).
Publisher Copyright:
© 2018, CRC Press/Balkema. All rights reserved.
PY - 2018
Y1 - 2018
N2 - This study evaluated arsenic (As) removal efficiency of Japanese oak wood biochar (JOW-BC) produced at 500° C in aqueous environments. Langmuir model was the best to fit arsenite (As(III)) and arsenate (As(V)) sorption on JOW-BC, with slightly higher sorption affinity, QL, for As(V) than As(III). The maximumAs removal was 81% and 84% for As(III)-and As(V)-JOW-BC systems at pH 7 and 6, respectively, which decreased above these pH values. Surface functional moieties contributed to As sequestration by the biochar examined here. Arsenic K-edge XANES spectroscopy demonstrated complex redox transformation of As(III)/As(V) with JOW-BC. The JOW-BC led to remove As from As-contaminated drinking well water with As depletion ranging from 92–100% of total As.
AB - This study evaluated arsenic (As) removal efficiency of Japanese oak wood biochar (JOW-BC) produced at 500° C in aqueous environments. Langmuir model was the best to fit arsenite (As(III)) and arsenate (As(V)) sorption on JOW-BC, with slightly higher sorption affinity, QL, for As(V) than As(III). The maximumAs removal was 81% and 84% for As(III)-and As(V)-JOW-BC systems at pH 7 and 6, respectively, which decreased above these pH values. Surface functional moieties contributed to As sequestration by the biochar examined here. Arsenic K-edge XANES spectroscopy demonstrated complex redox transformation of As(III)/As(V) with JOW-BC. The JOW-BC led to remove As from As-contaminated drinking well water with As depletion ranging from 92–100% of total As.
UR - http://www.scopus.com/inward/record.url?scp=85079251270&partnerID=8YFLogxK
U2 - 10.1201/9781351046633-169
DO - 10.1201/9781351046633-169
M3 - Conference contribution
AN - SCOPUS:85079251270
SN - 9781138486096
T3 - Environmental Arsenic in a ChangingWorld - 7th International Congress and Exhibition Arsenic in the Environment, 2018
SP - 430
EP - 431
BT - Environmental Arsenic in a ChangingWorld - 7th International Congress and Exhibition Arsenic in the Environment, 2018
A2 - Zhu, Yong-Guan
A2 - Zhu, Yong-Guan
A2 - Guo, Huaming
A2 - Guo, Huaming
A2 - Bhattacharya, Prosun
A2 - Bhattacharya, Prosun
A2 - Bundschuh, Jochen
A2 - Ahmad, Arslan
A2 - Ahmad, Arslan
A2 - Ahmad, Arslan
A2 - Naidu, Ravi
A2 - Naidu, Ravi
PB - CRC Press/Balkema
T2 - 7th International Congress and Exhibition Arsenic in the Environment, 2018
Y2 - 1 July 2018 through 6 July 2018
ER -