Investigation of GO-MNP-HAP hollow fibre and disc membrane for oily wastewater treatment

As we know, both water and oil cannot mix together due to different density. However, when it comes to produced water, the water and oil were mixed well together because both phase were formed and through maturation process at long period of time. Oil and gas industry encounter with large amount of oily wastewater produced from the upstream until downstream process with the ratio of 3 barrel of produced water to 1 barrel oil. Several technology has been implemented to treat the oily wastewater. However the results is not effective enough and high in cost. Therefore, some studies had been made in order to find the best method for oily wastewater treatment that is efficient enough and low in cost. Therefore, the membrane technology was seen as one of the emerging technology that can be imply. The membrane separation technology has been seen as an alternative wastewater treatment toward the conventional treatment. However, the membrane separation also has several disadvantages such as fouling and generally low selectivity. Thus, a new material which is graphene oxide magneticnanoparticles hydroxyapatite (GO-MNP-HAP) was introduced. GO-MNPHAP was synthesized through the modified Hummer’s method and chemical in situ method. Then the GO-MNP-HAP was further investigated by using, X-ray diffraction (XRD), and Fourier Transform Infrared (FTIR). The result obtained show that the GOMNP-HAP was successfully synthesized. The GO-MNP-HAP solution was prepared through sonication method and used to coat the surface of ceramic supported hollow fibre and disc membrane by using vacuum suction and dip coating method. The performance study of both bare and GO-MNP-HAP membrane was evaluated through permeation flux rate and oily wastewater rejection at 100 ppm, 500 ppm and 1000 ppm of oily wastewater. The oily wastewater was prepared by mixing crude oil, SDS in 1000 mL of deionized water at high rpm. The performance study of both bare and modified membrane was evaluated using dead-end permeation test. The permeate passed through the membrane was collected every 15 minutes for 2 hours and tested with UV-VIS spectroscopy. The GO-MNP-HAP coated hollow fibre and disc membrane display higher permeate flux with each membrane produced varied 1201.58 L/m2h and 16728.13 L/m2h oil rejection rate up to 98% compared to the bare membrane.