1 | Master Program of Environmental Science, School of Postgraduate Studies, Diponegoro University, Semarang 50421, Indonesia |
2 | Environmental Management Office of Solok Regency Government, Arosuka 27365, Indonesia |
3 | Department of Biology, Faculty of Sains and Mathematics, Diponegoro University, Semarang 50421, Indonesia |
4 | Department of Chemical Enginering, Faculty of Enginering, Diponegoro University, Semarang 50421, Indonesia |