1. Rival A, Levang P. (2014) Palms of controversies: Oil palm and development challenges. Bogor, Indonesia. http://www.cifor.org/publications/pdf_files/Books/BLevang1401.pdf. Accessed 27 June 2019.
2. Ohimain EI, Izah SC (2013) Water minimization and optimization by small-scale palm oil mill in Niger Delta, Nigeria. J Water Res 135:190–198
3. Wakil SM, Adelabu AB, Fasiku SA, Onilude AA (2013) Production of bioethanol from palm oil mill effluent using starter cultures. N Y Sci J 6:77–85
4. Awotoye OO, Dada AC, Arawomo G (2011) Impact of palm oil processing effluent discharging on the quality of receiving soil and rivers in south western Nigeria. J appl sci res 7:111–118
5. Iwuagwu JO, Ugwuanyi JO (2014) Treatment and valorization of palm oil mill effluent through production of food grade yeast biomass. J Waste Manag 2014:1–9. https://doi.org/10.1155/2014/439071