Piso sto Chorio … I Apantisi stin Krisi einai i Agrotiki Paragogi[Back to the Village … The Answer to the Crisis is Agricultural Production] |
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| Authors: | Evangelos I Manolas |
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| Affiliation: | 1. Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region, Chang’an University, Ministry of Education, Xi’an 710054, P.R. Chinaxiaohongzh95@126.com;3. Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region, Chang’an University, Ministry of Education, Xi’an 710054, P.R. China;4. UCD Dooge Centre for Water Resources Research, School of Civil Engineering, University College Dublin, Belfield, Dublin 4, Ireland |
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| Abstract: | In this study, groups of batch experiments were designed to identify the characteristics of alum sludge for arsenic (As) adsorption. Air-dried alum sludge (moisture content 13.9%) collected from a water treatment works in Xi’an, China, was subjected to artificial As-rich wastewater adsorption tests using As2O3 as a model As source. Adsorption behaviours were investigated and the results have shown that the Langmuir adsorption isotherm well fits the experimental data (R2 = 0.94957–0.99365). The maximum adsorption capacities range from 0.61 to 0.96 mg-As/g when the pH of the As solution was varied from 9.0 to 4.0. The prospects in China for the outcome of this study are discussed. This promising low-cost technique can eradicate As contamination in China. |
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| Keywords: | Al-WTRs Adsorption Arsenic removal Kinetics |
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