TY  - JOUR
N1  - cited By 77
N2  - The microalgal-bacterial co-cultivation was adopted as an alternative in making microbial-based biofuel production to be more feasible in considering the economic and environmental prospects. Accordingly, the microalgal-bacterial symbiotic relationship was exploited to enhance the microbial biomass yield, while bioremediating the nitrogen-rich municipal wastewater. An optimized inoculation ratio of microalgae and activated sludge (AS:MA) was predetermined and further optimization was performed in terms of different increment ratios to enhance the bioremediation process. The nitrogen removal was found accelerating with the increase of the increment ratios of inoculated AS:MA, though all the increment ratios had recorded a near complete total nitrogen removal (94â??95). In light of treatment efficiency and lipid production, the increment ratio of 0.5 was hailed as the best microbial population size in accounting the total nitrogen removal efficiency of 94.45, while not compromising the lipid production of 0.241 g/L. Moreover, the cultures in municipal wastewater had attained higher biomass and lipid productions of 1.42 g/L and 0.242 g/L, respectively, as compared with the synthetic wastewater which were only 1.12 g/L (biomass yield) and 0.175 g/L (lipid yield). This was possibly due to the presence of trace elements which had contributed to the increase of biomass yield; thus, higher lipid attainability from the microalgal-bacterial culture. This synergistic microalgal-bacterial approach had been proven to be effective in treating wastewater, while also producing useful biomass for eventual lipid production with comparable net energy ratio (NER) value of 0.27, obtained from the life-cycle analysis (LCA) studies. Thereby, contributing towards long-term sustainability and possible commercialization of microbial-based biofuel production. © 2019 Elsevier Ltd
ID  - scholars11189
TI  - Impact of various microalgal-bacterial populations on municipal wastewater bioremediation and its energy feasibility for lipid-based biofuel production
KW  - biodiesel; lipid; nitrogen; trace element; biofuel; lipid
KW  -  activated sludge; bacterium; biofuel; bioremediation; commercialization; energy planning; feasibility study; life cycle analysis; lipid; microalga; nitrogen compound; pollutant removal; population size; wastewater treatment
KW  -  activated sludge; Article; bacterium culture; biofuel production; bioremediation; coculture; energy; environmental sustainability; feasibility study; life cycle assessment; microalga; microbial biomass; municipal wastewater; nonhuman; process optimization; waste water management; biomass; bioremediation; waste water
KW  -  Bacteria (microorganisms)
KW  -  Biodegradation
KW  -  Environmental; Biofuels; Biomass; Feasibility Studies; Lipids; Microalgae; Waste Water
AV  - none
A1  - Leong, W.H.
A1  - Azella Zaine, S.N.
A1  - Ho, Y.C.
A1  - Uemura, Y.
A1  - Lam, M.K.
A1  - Khoo, K.S.
A1  - Kiatkittipong, W.
A1  - Cheng, C.K.
A1  - Show, P.L.
A1  - Lim, J.W.
JF  - Journal of Environmental Management
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85070511909&doi=10.1016%2fj.jenvman.2019.109384&partnerID=40&md5=6b7b6a24f6a5e63c733d1db2c4a876d6
VL  - 249
Y1  - 2019///
PB  - Academic Press
SN  - 03014797
ER  -