1 School of Minerals Processing & Bioengineering, Central South University No. 932 Lushan South Road, Yuelu District Changsha Hunan 410083 China alexandercsu@126.com.
2 Key Lab of Biohydrometallurgy of Ministry of Education Changsha Hunan China.
3 CSIR - National Metallurgical Laboratory Jamshedpur 831007 India.
4 Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology (NUST) Sector H-12 Islamabad Pakistan.