Energy of adsorption of an adsorbent in solving environmental problems Dilnoza Jumaeva, Akmal Abdurakhimov, Khodjiakbar Abdurakhimov, Nigora Rakhmatullaeva and Olimjon Toirov E3S Web Conf., 288 (2021) 01082 Published online: 14 July 2021 DOI: 10.1051/e3sconf/202128801082