Arsenate removal by zero valent iron: Batch and column tests

Arsenic Removal from Contaminated Groundwater by Zero Valent Iron: a Mechanistic and Long-Term Performance Study

“…Hence, zero valent iron is an in‰uential factor for the changes in the pH and the Eh levels in the solution. Other investigators have reported similar observations for pH and Eh (Su and Puls, 2001a;Biterna et al, 2007).…”

“…As to the overall behavior of arsenic removal, most of the researches have been focused on performance evaluations using ZVI based on batch studies and/or on shortperiod column experiments Puls, 2001a, 2001b;Bang et al, 2005;Leupin and Hug, 2005;Biterna et al, 2007), and limited researches have been focused on XRD and SEM analyses of the corrosion products for short periods of reaction time (Manning et al, 2002;Kanel et al, 2005). However, the previous studies are inadequate for highlighting the insights into the entire process of arsenic mitigation.…”

Preparation of alumina–iron oxide compounds by gel evaporation method and its simultaneous uptake properties for Ni2+, NH4+ and H2PO4−

“…Fe-and Al-hydroxides and oxides are well known to show high uptake of anions [5], especially toxic oxyanions such as arsenate [6,7] and phosphate [8][9][10]. Chubar et al [11] synthesized Fe 2 O 3 ·Al 2 O 3 ·xH 2 O with high specific surface area (c.a.…”

Effect of spatial distribution and aging of ZVI on the reactivity of resin–ZVI composites for arsenite removal

“…Application of zero-valent iron (ZVI or Fe 0 ) is an environmental benign approach of remediation/treatment of contaminated groundwater and wastewater, because it is cost-effective and readily available and can remove a variety of organic and inorganic contaminants including chlorinated organic compounds [1,2], nitroaromatic compounds [3,4], dyes [5,6], heavy metals [7,8], arsenic [9,10], nitrate [11,12], and phenol [13]. ZVI system can take advantage of not only the reductive but also oxidative reactions, which may make the ZVI technology more versatile.…”