Efficiency Investigating of Biochar for Desalination in the Presence of Copper Ions
Document Type : Research Paper
Authors
- 1 M.Sc. Alumnus, Department of Water Sciences and Engineering, Collage of Agriculture and Natural Resources, Ardakan University, Ardakan, Iran
- 2 Assoc. Professor, Department of Water Sciences and Engineering, Collage of Agriculture and Natural Resources, Ardakan University, Ardakan, Iran
- 3 PhD of Water Sciences and Engineering, Planning, Yazd Regional Water Company, Yazd, Iran
- 4 Assist. Professor, Department of Water Sciences and Engineering, Collage of Agriculture and Natural Resources, Ardakan University, Ardakan, Iran
Abstract
With the aim of investigating the efficiency of biochar for desalination, experiments with adsorbent treatment at four levels including sesame flour, biochar at temperatures of 400, 500 and 600 ℃ and salt water treatment at four levels including 5, 10, 20 and 35 dS/m were conducted in three replications as a factorial experiment in the form of a completely randomized design in a discontinuous environment. The adsorption of the salinity factor ions was studied in the presence and absence of copper ions. The results showed that the desalination capacity without the presence of copper ions in the best adsorbent (Biochar 600) was obtained at the studied salinities of 411.6 mg/g. While the desalination capacity in the presence of copper ions using the same adsorbent at the studied salinities was 382.2 mg/g, indicating competition between ions and 8.0% decrease in adsorption capacity for salinity 35 dS/m. In both the presence and absence of copper, the highest adsorption was assigned to chlorine and sodium ions and the lowest to potassium ion. In summary, sesame flour biochar, owing to its high active surface area, porous structure, and suitable functional groups on the surface, effectively adsorbs salt ions in the presence of copper ions during the adsorption process.
Keywords
Subjects
environment
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