Nguyen LH, Van HT, Nguyen QT, Nguyen TH, Nguyen TBL, Pham TPT, Le TH, Bui MH, Ho VT, Tilpo OHJ, Ivan Jimenez MGS, Ngo TM. Removal of chromium from wastewater using paper waste sludge-derived hyrdrochar modified by naoh. Vietnam J. Earth Sci. [Internet]. 2020 Dec. 14 [cited 2024 Nov. 23];43(1):71-80. Available from: https://vjs.ac.vn/index.php/jse/article/view/15704