%0 Journal Article
%@ 22279717
%A Basri, W.N.F.W.
%A Daud, H.
%A Lam, M.K.
%A Cheng, C.K.
%A Da Oh, W.
%A Tan, W.N.
%A Shaharun, M.S.
%A Yeong, Y.F.
%A Paman, U.
%A Kusakabe, K.
%A Kadir, E.A.
%A Show, P.L.
%A Lim, J.W.
%D 2019
%F scholars:11350
%I MDPI AG
%J Processes
%N 9
%R 10.3390/pr7090572
%T A sugarcane-bagasse-based adsorbent employed for mitigating eutrophication threats and producing biodiesel simultaneously
%U https://khub.utp.edu.my/scholars/11350/
%V 7
%X Eutrophication is an inevitable phenomenon, and it has recently become an unabated threat. As a positive, the thriving microalgal biomass in eutrophic water is conventionally perceived to be loaded with myriad valuable biochemical compounds. Therefore, a sugarcane-bagasse-based adsorbent was proposed in this study to harvest the microalgal biomass for producing biodiesel. By activating the sugarcane-bagasse-based adsorbent with 1.5 M of H2SO4, a highest adsorption capacity of 108.9 ± 0.3 mg/g was attained. This was fundamentally due to the surface potential of the 1.5 M H2SO4 acid-modified sugarcane-bagasse-based adsorbent possessing the lowest surface positivity value as calculated from its point of zero charge. The adsorption capacity was then improved to 192.9 ± 0.1 mg/g by stepwise optimizing the adsorbent size to 6.7-8.0 mm, adsorption medium pH to 2-4, and adsorbent dosage to 0.4 g per 100mLof adsorption medium. This resulted in 91.5 microalgae removal efficiency. Excellent-quality biodiesel was also obtained as reflected by the fatty acid methyl ester (FAME) profile, showing the dominant species of C16-C18 encompassing 71 of the overall FAMEs. The sustainability of harvesting microalgal biomass via an adsorption-enhanced flocculation processes was also evidenced by the potentiality to reuse the spent acid-modified adsorbent. © 2019 by the authors.
%Z cited By 10