The goal of this research was to separate potassium ion from calcium ion, which affects potassium purity when extracted and recovered from incineration ash, as well as to lessen the environmental burden of the final waste liquid. Potassium tartrate is made by extracting calcium as calcium tartrate using acetic acid, a weak acid, then adding tartaric acid to the filtrate to separate calcium as calcium tartrate, then concentrating and evaporating the solution. All of the experiments were carried out in a batch mode. When the solid–liquid ratio was 1:20, an acetic acid solution of 0.5 mol/L was utilised for extraction, and the extraction extent was 95.4 percent. Following the filtration of the extract, 10 mL of 10% tartaric acid was added to 20 mL of extract, resulting in solid precipitation. When the solids were separated and potassium was dissolved in the acid, 72 percent of the extract was recovered. The syngenite technique works best when a magnesium dosage of 5 mmol/L is added, and the Ca:K ratio is 1:2.1 with 42mol percent K at pH 11. This might be a suggestion as to which way of recovering K is most successful and efficient.

Author(s) Details:

Hiroyuki Harada,
Graduate School of Comprehensive Academic Studies, Prefectural University of Hiroshima, Japan.

Endar Hidatat,
Graduate School of Comprehensive Academic Studies, Prefectural University of Hiroshima, Japan.

Afan Bagus Mananda,
Graduate School of Comprehensive Academic Studies, Prefectural University of Hiroshima, Japan.

Please see the link here: https://stm.bookpi.org/RACMS-V1/article/view/7107