Nawaz, R. and Kait, C.F. and Chia, H.Y. and Isa, M.H. and Huei, L.W. and Sahrin, N.T. and Khan, N. (2021) Countering major challenges confronting photocatalytic technology for the remediation of treated palm oil mill effluent: A review. Environmental Technology and Innovation, 23. ISSN 23521864