1.Thi TTH, Thi TLD, Nguyen DH. Research on the recycling of waste activated sludge as an adsorbent material for ammonium removal in wastewater. Vietnam J. Sci. Technol. [Internet]. 2022 Jul. 8 [cited 2026 Apr. 19];60(3):527-40. Available from: https://vjst.vast.vn/jst/article/view/16148