Mehdi Seifollahi and  Ashkan Forootan and  Sajjad Bahrami Reyhan,  Examination of the Reasons for the Formation of Red Oil in Spent Caustic from Olefin Plant.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2016, vol. 116(8). 1162 - 1169
    [viewed 18 April 2024]. Available from: https://publications.waset.org/pdf/10007069.