Lan Huong Nguyen and Tuan Hiep Tran 2024. Preliminary study on simultaneous adsorption of nitrate and phosphate using CaFe₂O₄-modified biochar originated from lychee peels. Vietnam Journal of Science, Technology and Engineering. 66, 3 (Sep. 2024), 55-62. DOI:https://doi.org/10.31276/VJSTE.2023.0092.