RESULTS OF CHEMICAL ACTIVATION OF BIOCHAR OBTAINED BY THE METHOD OF ACCELERATED HYDROTHERMAL CARBONIZATION OF SEWAGE SLUDGE

An investigation has been made into accelerated hydrothermal fl uidized carbonization of sewage sludge in a superheated steam medium. It is shown that an increase in the process temperature has no effect on its duration but has a signifi cant effect on the composition of noncondensable gases. Biochar activation has been investigated in potassium hydroxide at a temperature of 750^o C and the biochar–KOH ratios of 1:1.5, 1:2, and 1:3. It is shown that the KOH concentration has no effect, in practice, on the sorption characteristics of the obtained product which is more suitable for the use as a soil improver
   
Author:  N. S. Muratova, R. L. Is′emin, A. V. Melezhik, S. N. Kuz′min, A. V. Nebyvaev, A. V. Mikhalev, O. Yu. Milovanov, V. S. Kokh-Tatarenko, Yu. A. Teplitskii, É. K. Buchilko, E. A. Pitsukha, and A. Zh. Greben′kov
Keywords:  hydrothermal carbonization, fl uidized bed, superheated steam, waste water, chemical activation, adsorption
Page:  1557