TY JOUR TI INVESTIGATION OF THE POSSIBILITY OF RECYCLING EXCESS ACTIVATED SLUDGE TO PRODUCE SORPTION MATERIAL KW EXCESS ACTIVATED SLUDGE KW UTILIZATION KW PYROLYSIS KW SORBENT JO Herald of Technological University AU Pavlikova, D.A. AU Kartushina, Y.N. PY 2025 IS 28 PB Kazan National Research Technological University