Potassium-phosphorus-sulfur augmented biochar production from potentially toxic elements abated gypsum pond wastewater of phosphate fertilizer industry

1. Ray, A.
2. Kumar, M.
3. Karim, A.A.
4. Biswas, K.
5. Mohanty, S.
6. Shadangi, K.P.
7. Kumar, S.
8. Sarkar, B.