Abstract
Using the methods of chemical analysis and bioassays, we investigated the toxicity and detoxication of model solutions containing arsenic salts. The ability of zeolites to absorb arsenic from model solutions was examined. Commercially available humic substances (“Powhumus”, “Humate-80”), as well as zeolites, activated with their application were shown to reduce toxic effect of pollutants. Zeolite activated by degassing, decationization, thermal and chemical treatment showed the highest sorbent efficiency.
Highlights
To date, the negative effects of arsenic derivatives on the environment are fairly well known (Berg et al, 2007)
They are capable of selectively binding cations of heavy metals, arsenic and several other substances due to the cation exchange properties (Wu and Zhou, 2009; Camacho et al, 2011)
As control we evaluated the effectiveness of binding of arsenic by calcined zeolite without humic substances (HS) or other reagents added
Summary
The negative effects of arsenic derivatives on the environment are fairly well known (Berg et al, 2007). Natural zeolites deserve special interest as absorbers of various pollutants. They are distinguished by sufficiently cheapness and availability (Mohan and Pittman, 2007; Yadanaparthi et al, 2009). The volume of pores in the zeolite is up to 50% of the frame volume. They are capable of selectively binding cations of heavy metals, arsenic and several other substances due to the cation exchange properties (Wu and Zhou, 2009; Camacho et al, 2011)
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