One of the causes of water pollution is the presence of heavy metals in water. In the present study, an adsorbent prepared from the raw bark of the Pongamia pinnata tree is used for the removal of ferrous or ferric ions from aqueous and waste water containing heavy metals. Adsorption studies were conducted at different pH, concentration of metal ion, amount of adsorbent, contact time, agitation...

Background and objectives: Artemisia aucheri Boiss. is regarded as one of 34 Artemisia species growing in Iran. The aim of this study was to undertake an investigation of the antioxidant activity as well as identification of main compound of different extracts and fractions of A. aucheri. Methods: Antioxidant activity and tot...

Present study reports the antioxidant activities of methanolic extracts of Actiniopteris radiata and Equisetum ramosissimum. The analyses carried out were DPPH radical scavenging, ABTS·+, reducing power, and ferrous ion chelating tests. From the analyses, Actiniopteris radiata and Equisetum ramosissimum, were found to have potent antioxidant activity against DPPH with the IC50 value of 93.48 an...

Nitroaromatic and cyclic nitramine compounds are frequently encountered as energetic residues in live-fire military training ranges. Careful assessment on the redox fate of current and emerging explosives will allow accurate assessment of potential site risks and remediation strategies to protect the warfighter. This study employed the naturally-occurring reductant ferrous iron to investigate t...

The biological oxidation of ferrous to ferric ion by iron oxidizing bacteria is potentially a useful industrial process for the removal of H2S from industrial gases, desulphurization of coal, and removal of sulfur dioxide from flue gas. In the bioprocess of H2S removal an aqueous Fe2(SO4)3 solution is used as an absorbent. H2S is absorbed and oxidized to elemental sulfur. At the same time, Fe i...