Improving the efficiency of biogas utilisation as motor fuel Varvara Druzyanova, Sofya Petrova, Nadezhda Khiterkheeva, Lena Yakovleva, Nikolay Petrov, Daba Radnaev, Zlata Strekalovskaya and Mikhail Shadrin E3S Web Conf., 460 (2023) 07004 Published online: 11 December 2023 DOI: 10.1051/e3sconf/202346007004