TY - JOUR
T1 - Mercury removal from water streams through the ion exchange membrane bioreactor concept
AU - Oehmen, Adrian
AU - Vergel, Dario
AU - Fradinho, Joana
AU - Reis, Maria A. M.
AU - Crespo, João G.
AU - Velizarov, Svetlozar
N1 - The authors wish to thank Susana Serra and Javier Llanos for technical assistance. The financial support by Fundacao para a Ciencia e a Tecnologia (FCT), Lisbon, Portugal through projects PEst-C/EQB/LA0006/2011 and PPCDT/AMB/5735612004 is gratefully acknowledged.
PY - 2014/1/15
Y1 - 2014/1/15
N2 - Mercury is a highly toxic heavy metal that causes human health problems and environmental contamination. In this study, an ion exchange membrane bioreactor (IEMB) process was developed to achieve Hg(II) removal from drinking water and industrial effluents. Hg(II) transport through a cation exchange membrane was coupled with its bioreduction to Hg0 in order to achieve Hg removal from concentrated streams, with minimal production of contaminated by-products observed. This study involves (1) membrane selection, (2) demonstration of process effectiveness for removing Hg from drinking water to below the 1ppb recommended limit, and (3) process application for treatment of concentrated water streams, where >98% of the Hg was removed, and the throughput of contaminated water was optimised through membrane pre-treatment. The IEMB process represents a novel mercury treatment technology with minimal generation of contaminated waste, thereby reducing the overall environmental impact of the process.
AB - Mercury is a highly toxic heavy metal that causes human health problems and environmental contamination. In this study, an ion exchange membrane bioreactor (IEMB) process was developed to achieve Hg(II) removal from drinking water and industrial effluents. Hg(II) transport through a cation exchange membrane was coupled with its bioreduction to Hg0 in order to achieve Hg removal from concentrated streams, with minimal production of contaminated by-products observed. This study involves (1) membrane selection, (2) demonstration of process effectiveness for removing Hg from drinking water to below the 1ppb recommended limit, and (3) process application for treatment of concentrated water streams, where >98% of the Hg was removed, and the throughput of contaminated water was optimised through membrane pre-treatment. The IEMB process represents a novel mercury treatment technology with minimal generation of contaminated waste, thereby reducing the overall environmental impact of the process.
KW - Donnan dialysis
KW - Ion exchange membrane bioreactor (IEMB)
KW - Mercury bioremediation
KW - Mixed microbial cultures
KW - Water treatment
UR - http://www.scopus.com/inward/record.url?scp=84888036111&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2013.10.067
DO - 10.1016/j.jhazmat.2013.10.067
M3 - Article
C2 - 24275472
AN - SCOPUS:84888036111
SN - 0304-3894
VL - 264
SP - 65
EP - 70
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
ER -
