Removing arsenic from aqueous solution and long-term product storage

Metallic Iron (Fe0) Provide Possible Solution to Universal Safe Drinking Water Provision

“…In the context of fluoride removal using electro coagulation, Al-alloyed have shown better efficiency that Fe electrodes [133]. The similitude of both processes [36,37,[134][135][136] suggests that Al-alloyed materials will be better for fluoride mitigation [137,138]. Coincidentally, such materials have already been developed and used for other contaminants including pathogens [134,135,139,140].…”

Continuous bioscorodite crystallization in CSTRs for arsenic removal and disposal

“…At many production sites, arsenic trioxide is accumulated and stored until a suitable technology for its disposal is developed. Arsenic is traditionally removed from industrial wastewaters from mineral processing and metallurgical operations by lime neutralization with co-precipitation of arsenic with ferric iron Twidwell and McCloskey, 2011). Arsenical ferrihydrite precipitation requires a high iron consumption with respect to arsenic, i.e.…”

“…Arsenical ferrihydrite precipitation requires a high iron consumption with respect to arsenic, i.e. Fe/As >4 and thus large amounts of waste material are produced Twidwell and McCloskey, 2011). Solideliquid separation of arsenical ferrihydrite is extremely inefficient.…”

Rescuing Fe0 remediation research from its systemic flaws

“…Hereby, reduction is mostly regarded as a stand-alone removal mechanism and possible paths for contaminant reduction in Fe [21,141,142]. The removal of arsenic and selenium species have also been documented, but the importance of reduction was less emphasized [40,108,134,[143][144][145][146][147].…”