Truong DQ, Pham VP, Tran LM, Nguyen TV. Utilizing Coffee Husk Biochar as an Effective Adsorbent for Ammonium Removal in Groundwater. SSAD [Internet]. 2023 Nov. 30 [cited 2025 Jul. 10];33(5):26-33. Available from: https://jst.vn/index.php/ssad/article/view/6