1. Professor, Oil and Gas Business Dept., M. Auezov South Kazakhstan State Univ., Tauke Khan Ave., Shymkent 160012, Republic of Kazakhstan. ORCID:
2. Associate Professor, Oil and Gas Business Dept., M. Auezov South Kazakhstan State Univ., Tauke Khan Ave., Shymkent 160012, Republic of Kazakhstan (corresponding author).
3. Doctoral Student, Petroleum Processing and Petrochemistry Dept., M. Auezov South Kazakhstan State Univ., Tauke Khan Ave., Shymkent 160012, Republic of Kazakhstan.
4. Associate Professor, Oil and Gas Business Dept., M. Auezov South Kazakhstan State Univ., Tauke Khan Ave., Shymkent 160012, Republic of Kazakhstan.
5. Head of the Chair of Petroleum Processing and Petrochemistry, M. Auezov South Kazakhstan State Univ., Tauke Khan Ave., Shymkent 160012, Republic of Kazakhstan. ORCID:
6. Professor, Ecology Dept., M. Auezov South Kazakhstan State Univ., Tauke Khan Ave., Shymkent 160012, Republic of Kazakhstan.
7. Professor, Ecology Dept., M. Auezov South Kazakhstan State Univ., Tauke Khan Ave., Shymkent 160012, Republic of Kazakhstan. ORCID: