@article{article44,
  title = {Optimization of colour pigments removal from palm oil using activated ogbunike kaolinite},
  author = {NNANWUBE, I.A. and OKAFOR, V.N. and OBIBUENYI, J.I. and ONUKWULI, O.D. and AJEMBA, R.O.},
  journal = {Sigma Journal of Engineering and Natural Sciences},
  year = {2020},
  volume = {38},
  pages = {253-263},
  doi = {}
}