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GRANULATED BOG IRON ORES AS SORBENTS IN PASSIVE (BIO)REMEDIATION SYSTEMS FOR ARSENIC REMOVAL
Debiec, K., G. Rzepa, T. Bajda, W. Uhrynowski, A. Sklodowska, J.Krzysztoforski, et al.
Frontiers in Environmental Chemistry 6:54(2018)

This study (i) investigated the ability of granulated bog iron ores (gBIOs) to remove arsenic from various types of contaminated waters, and (ii) estimated the application potential of gBIOs in technologies dedicated to water treatment. Studies conducted on synthetic solutions of arsenic and environmental samples of As-contaminated water showed gBIOs as an appropriate As and Zn adsorbent, confirmed by dynamic adsorption studies. The actual sorption efficiency of gBIOs depended on the adsorbate concentration. Desorption analysis showed that As-loaded gBIOs are characterized by high chemical stability and they may be reused for the (ad)sorption of other elements. The effective removal of inorganic As suggests that gBIOs might be used for remediation of both highly oxygenated waters and groundwater or settling ponds, where the oxygen level is low. Arsenic concentration after treatment was <100 µg/L, which is below the limit for industrial water. This article is Open Access at https://www.frontiersin.org/articles/10.3389/fchem.2018.00054/full



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