eprintid: 10277
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/02/77
datestamp: 2023-11-09 16:36:54
lastmod: 2023-11-09 16:36:54
status_changed: 2023-11-09 16:31:00
type: article
metadata_visibility: show
creators_name: Leong, W.-H.
creators_name: Lim, J.-W.
creators_name: Lam, M.-K.
creators_name: Uemura, Y.
creators_name: Ho, C.-D.
creators_name: Ho, Y.-C.
title: Co-cultivation of activated sludge and microalgae for the simultaneous enhancements of nitrogen-rich wastewater bioremediation and lipid production
ispublished: pub
keywords: Algae; Biomass; Bioreactors; Bioremediation; Microorganisms, Activated sludge; Co-cultivation; Kinetic growth; Lipid productions; Micro-algae, Nitrogen removal
note: cited By 63
abstract: 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
date: 2018
publisher: Taiwan Institute of Chemical Engineers
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85045013503&doi=10.1016%2fj.jtice.2018.03.038&partnerID=40&md5=99562d572497682bf387269a7ed28707
id_number: 10.1016/j.jtice.2018.03.038
full_text_status: none
publication: Journal of the Taiwan Institute of Chemical Engineers
volume: 87
pagerange: 216-224
refereed: TRUE
issn: 18761070
citation:   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