Loan, T., Thuy, H. and Huyen, P. 2021. A review on the modification techniques to enhance the heavy metals sorption capacity of kaolin clay from south east Vietnam. Science & Technology Development Journal: Science of the Earth & Environment. 5, SI2 (Nov. 2021), SI176-SI199. DOI:https://doi.org/https://doi.org/10.32508/stdjsee.v5iSI2.641.