THI, Thai Thanh Hoang; THI, Truc Linh Do; NGUYEN, Dai Hai. Research on the recycling of waste activated sludge as an adsorbent material for ammonium removal in wastewater. <b>Vietnam Journal of Science and Technology</b>, Hanoi, VN, v. 60, n. 3, p. 527–540, 2022. DOI: 10.15625/2525-2518/16148. Disponível em: https://vjs.ac.vn/jst/article/view/16148. Acesso em: 10 jan. 2026.