relation: https://khub.utp.edu.my/scholars/10277/
title: Co-cultivation of activated sludge and microalgae for the simultaneous enhancements of nitrogen-rich wastewater bioremediation and lipid production
creator: Leong, W.-H.
creator: Lim, J.-W.
creator: Lam, M.-K.
creator: Uemura, Y.
creator: Ho, C.-D.
creator: Ho, Y.-C.
description: The symbiotic relationships between activated sludge and microalgae were explored for bio-remediating nitrogen-rich wastewater and producing lipid-based biofuel simultaneously. Various inoculation ratios of activated sludge to microalgae (AS:MA) biomasses were employed to unveil the mechanism of NH4 +-N removal in relation to lipid production from algal-bacterial biomass. The presence of nitrifiers in converting NH4 +-N into oxidized nitrogen (NO2 �-N and NO3 �-N) had greatly enhanced the total nitrogen removal in the co-cultivation bioreactors as compared with the individual culture of either activated sludge or microalgae. Accordingly, achieving near complete nitrogen removal (97�98) when the bioreactors were inoculated with AS:MA ratios of 1:0.75 and beyond. The kinetic growths of co-cultivated activated sludge and microalgae biomasses were also investigated using Verhulst model; demonstrating a significant increase of specific biomass growth rate with increasing of initial microalgae inoculation ratio. The AS:MA ratio of 1:0.75 was considered optimum for the symbiotic algal-bacterial interactions, attaining the highest lipid yield of 130 mg/L and flocculation efficiency of 42 which would aid the biomass harvesting process. © 2018 Taiwan Institute of Chemical Engineers
publisher: Taiwan Institute of Chemical Engineers
date: 2018
type: Article
type: PeerReviewed
identifier:   Leong, W.-H. and Lim, J.-W. and Lam, M.-K. and Uemura, Y. and Ho, C.-D. and Ho, Y.-C.  (2018) Co-cultivation of activated sludge and microalgae for the simultaneous enhancements of nitrogen-rich wastewater bioremediation and lipid production.  Journal of the Taiwan Institute of Chemical Engineers, 87.  pp. 216-224.  ISSN 18761070     
relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85045013503&doi=10.1016%2fj.jtice.2018.03.038&partnerID=40&md5=99562d572497682bf387269a7ed28707
relation: 10.1016/j.jtice.2018.03.038
identifier: 10.1016/j.jtice.2018.03.038