Low cost palm oil fuel ash based ceramic membranes for oily water separation

Abstract

Ceramic membranes have been gaining so much interest for oily water separation due to their superior characteristics such as good anti-fouling property, superhydrophilic, as well as excellent thermal and chemical stabilities. However, ceramic membranes are very expensive which hinders their uses in large scale applications. Therefore, the aim of our study is to develop a low cost palm oil fuel ash (POFA) based ceramic hollow fiber ceramic membrane for oily water separation application. An asymmetric membrane structure consisting of sponge-like and macrovoid layers were acquired using a combined phase inversion and sintering technique. The membranes were sintered at different temperatures ranging from 1000 to 1150 °C. The sintered membranes were characterized in terms of morphology, mechanical strength, porosity, permeate flux and oil rejection performance. A high oil rejection efficiency of up to 96.0% was obtained for the membrane sintered at 1050 °C with the permeate flux of 185.42 L/m2h at the applied pressure of 3 bar. Based on the comparison with other ceramic membranes reported in the literature, it can be concluded that POFA based ceramic hollow fiber membrane showed a comparable performance and thus can be a promising low cost alternative ceramic membrane for oily water separation application.

Research and Development Journey and Future Trends of Hollow Fiber Membranes for Purification Applications (1970–2020): A Bibliometric Analysis

“…Research on HFM and its versatile applications increased continually and rocketed in the past two decades (2001–2020) with a total of 5626 research articles, achieving the highest figure in the year 2018 (375 articles), as shown in Figure 1 . This variation trend of research papers reflected the development process of HFM applications specifically for gas separation and water treatment technology [ 3 , 37 ]. Factors such as increasing problems of water pollution and water scarcity with an increasing global population contributed to the development of new methods for water purification.…”

Sustainable ceramics derived from solid wastes: a review

“…37.5 wt.% heattreated RH content and 1200ºC sintered specimen shows bending strength of ~71 MPa, open porosity of ~50% and permeate water flux of ~300 L/m 2 •h. Tai et al (2018) [242] have synthesized hollow fiber ceramic membrane for oily water separation using waste palm oil fuel ash (it is generated through the burning of palm kernel shells, empty fruit bunches and mesocarp fiber) through the combination of phase inversion and sintering method. 38 wt.% palm oil fuel ash containing 1050°C sintered membrane shows 96% oil rejection efficiency and 185.42 L/m 2 •h permeate flux at 3 bar applied pressure.…”

Potensi Penggunaan Abu Terbang Cangkang Sawit sebagai Adsorben Logam Arsen dari Air Limbah Tambang

“…Sekitar 4,5 juta ton limbah padat kelapa sawit, khususnya abu terbang cangkang sawit diproduksi per tahun, data ini menunjukkan potensi abu terbang cangkang sawit sebagai bahan baku adsorben untuk menghilangkan kandungan Arsen pada air limbah (Yusof et al, 2020). Penggunaan abu terbang cangkang sawit cukup layak dan juga menarik untuk dilakukan karena abu terbang cangkang sawit yang tidak diolah (raw) mengandung 68% SiO 2 (Tai et al, 2018). Selain itu, abu terbang cangkang sawit merupakan adsorben yang murah (Yanyan et al, 2018), terbarukan, dan menunjukkan pelepasan karbon dioksida yang rendah (Elias et al, 2018).…”