Trinh, B.-S., Thi Kieu Chinh, P. and Đoan Tram, H. 2020. Color removal efficiency of rice husk biochar modified with magnetized iron oxides and nano zero valent iron for decolorization of dyeing wastewater. VNUHCM Journal of Earth Science and Environment. 3, 2 (Jan. 2020), 105-114. DOI:https://doi.org/https://doi.org/10.32508/stdjsee.v3i2.478.