Use of three types of magnetic biochar in the removal of copper(II) ions from wastewaters (original) (raw)

Three types of magnetic biochars (MBC1, MBC2 and MBC3) were synthesized from biochar using NaBH 4 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/dm 3 and decreases to 71.7% at 200 mg/dm 3. 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/dm 3 HNO 3 as a desorbing agent gives the highest desorption percentage 98.92%.