Use of three types of magnetic biochar in the removal of copper(II) ions from wastewaters |
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Authors: | D. Kołodyńska |
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Affiliation: | Department of Inorganic Chemistry, Faculty of Chemistry, Maria Curie-Sk?odowska University, Lublin, Poland |
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Abstract: | Three types of magnetic biochars (MBC1, MBC2, and MBC3) were synthesized from biochar using NaBH4 as a reducing agent of Fe(II) to Fe(0) to remove copper(II) ions from different wastewaters. Based on the research it was found that removal of copper(II) ions by MBC1 occurs with a yield of 99.8% for the concentration 50 mg/dm3 and decreases to 71.7% at 200 mg/dm3. The maximum pH sorption was found at pH 5. The highest correlation coefficient values (65.55 mg/g) were obtained for the Langmuir isotherm model. Application of 0.5 mol/dm3 HNO3 as a desorbing agent gives the highest desorption percentage 98.92%. |
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Keywords: | Copper(II) ions desorption magnetic biochar modification sorption |
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