The purpose of this study is to clarify the zinc removal mechanism by a natural component of organic soils, namely leaf mold and construct quantitative model. We performed batch removal experiments at different concentrations of zinc in the range 10-50 mg/dm3. The dosage of leaf mold was also changed up to 20 g/dm3. The obtained results highlighted that sorption isotherm showed a Langmuir type for each initial concentration of zinc. X-ray absorption fine structure analysis revealed that atomic arrangement of leaf mold was not changed between before and after zinc removal experiments. From above results, it was confirmed that the zinc removal mechanism by leaf mold was surface complexation formation. Based on the experimental results, we constructed a quantitative model incorporating surface complexation by leaf mold. The pH edge for Zn(II) removal by leaf mold was successfully represented by the quantitative model.
|Number of pages||6|
|Journal||Journal of the Society of Powder Technology, Japan|
|Publication status||Published - 2019 Mar 10|
- Leaf mold
- Surface complexation modeling
- X-ray absorption fine structure.
ASJC Scopus subject areas
- Process Chemistry and Technology
- Fluid Flow and Transfer Processes
- Filtration and Separation