Alkaline Extraction of Organomineral Potassium Humate from Coal Mining Waste

Applied Sciences

Dina Assylbekova¹  Yerkebulan Raiymbekov¹  Saule Nazarbekova¹  Perizat Abdurazova¹  Ulzhalgas Nazarbek¹  Maksat Kambatyrov¹ 

[1] High School of Chemical Engineering and Biotechnology, M. Auezov South Kazakhstan University, Shymkent 160012, Kazakhstan;

关键词: potassium humate;    organomineral;    coal mining waste;    activation energy;    alkaline extraction;   

DOI  :  10.3390/app12073658

来源: DOAJ

【 摘 要 】

Organomineral potassium humate was extracted from coal mining waste from the Lenger deposit (Turkestan region, Kazakhstan) by alkaline extraction using an aqueous solution of potassium hydroxide. The time and temperature of the process were investigated for the degree of extraction and yield of the product. A comprehensive study of the physicochemical properties of the raw material and the resulting production potassium humate was carried out by chemical analysis, scanning electron microscope, energy dispersion, IR-Fourier spectrometric and X-ray diffractographic analyses. The maximum degree of extraction and yield of the product wasachieved at 80 °C and 90 min. Moreover, the experimental data were subjected to kinetic processing, as a result of which it was established that the process of extraction of potassium humate occurs in the external diffusion region.

【 授权许可】

Unknown