Removal ofArsenite and Arsenateby Indigenous IronOres of Pakistan

Pakistan Journal of Analytical & Environmental Chemistry

Ghulamullah Maitlo¹  Zulfiqar Ali Bhatti²  Khadija Qureshi²  Ghulam Abbas Kandhro³ 

[1] Chemical Engineering Department, Dawood University of Engineering and Technology, Karachi, Sindh Pakistan.;Chemical Engineering Department, Mehran University of Engineering and Technology, Jamshoro, Sindh Pakistan. ;Department of Basic Sciences, Mathematics and Humanities, Dawood University of Engineering and Technology, Karachi, Sindh, Pakistan.;

关键词: arsenite;    arsenate;    adsorption;    iron ores;   

DOI  :  doi.org/10.21743/pjaec/2020.12.31

来源: DOAJ

【 摘 要 】

This study is focusing on the comparative study of arsenite and arsenate adsorption from the water via indigenous iron ores. The Sindh and Punjab provinces of Pakistan are badly affected by Arsenic (As) toxicity as the people are consuming arsenic contaminated groundwater. The aim of this study is to investigate the effect of anions on adsorption of arsenite As(III) and arsenate As(V). Impact of pH, contact time, adsorbent dose and shaking speed on adsorption of arsenite and arsenate is studied with the two selected iron ores from Hoshi and Shikarap from Balochistan. Hoshi and Shikarap ores exhibited higher As(III) and As (V) adsorption, respectively thus selected for further removal studies. Hoshi iron ore without sodium carbonate yields higher adsorption as compared to the samples with 100 mg/L and 1000 mg/L sodium carbonate in both As(III) and As(V). Hoshi ore exhibited the highest adsorption of 85% for As (V) without sodium phosphate dibasic and 83% for As(III). Shikarap ore for As(V) adsorbs 75% without sodium phosphate dibasic and 67% adsorption for As(III) without sodium phosphate dibasic. Shikarap ore with sodium silicate at 100 mg/L adsorbs 62% As(III) and at 1000 mg/L adsorb 52% As(III). Shikarap ore As(V) adsorption decreases from 75% without sodium silicate to 70% at 100 mg/L and even lower adsorption of 65% at a higher concentration of 1000 mg/L.

【 授权许可】

Unknown