eprintid: 14195
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/41/95
datestamp: 2023-11-10 03:28:46
lastmod: 2023-11-10 03:28:46
status_changed: 2023-11-10 01:56:16
type: article
metadata_visibility: show
creators_name: Cheng, Y.W.
creators_name: Lim, J.S.M.
creators_name: Chong, C.C.
creators_name: Lam, M.K.
creators_name: Lim, J.W.
creators_name: Tan, I.S.
creators_name: Foo, H.C.Y.
creators_name: Show, P.L.
creators_name: Lim, S.
title: Unravelling CO2 capture performance of microalgae cultivation and other technologies via comparative carbon balance analysis
ispublished: pub
keywords: Algae; Carbon capture; Flue gases; Flues; Gas permeable membranes; Lakes; Mass transfer; Microorganisms; Photobioreactors; Sensitivity analysis; Separation, Adsorption separation; Airlift photobioreactor; Balance analysis; Carbon balance; CO 2 emission; Membrane separation; Microalgae cultivation; Performance; Raceway pond; Vulgaris, Carbon dioxide
note: cited By 18
abstract: Microalgae cultivation, absorption, adsorption, and membrane separation are widely applauded as promising technologies to sequester CO2 from flue gas. Herein, comparative carbon balance was used to elucidate their CO2 capture performance in the aspects of CO2 emission rates (direct, indirect, total, and net), CO2 removal efficiencies (apparent and actual), and CO2 removal rate per power input ratio. Screening criteria for effective CO2 capture system rule out energy-intensive sorption processes, put forward low energy membrane separation, and disclose alterable competency of microalgae cultivation. For CO2 capture from flue gas, microalgae (Chlorella vulgaris) cultivation in open raceway ponds was only inferior to membrane separation. To improve microalgal CO2 capture, the sensitivity analysis was performed by replacing original microalgae species (C. vulgaris) or cultivation system (open raceway pond). The microalgal CO2 capture in open raceway ponds became worse following the substitution of C. vulgaris with alternatives (Botryococcus braunii, Chlorella kessleri, Chlorella pyrenoidosa, Scenedesmus obliquus, Spirulina sp., or Tetraselmis suecica). For microalgal (C. vulgaris) CO2 capture, the competent cultivation systems included open raceway pond and airlift photobioreactor, while the bubble column, flat panel, or tubular photobioreactors were classified as non-competent systems. In short, microalgal (C. vulgaris) CO2 capture was technically feasible in open raceway pond or airlift photobioreactor; further, the use of airlift photobioreactor was preferred for better CO2 capture and microalgae biomass production. Due to the necessity of a huge working volume, the low scalability of microalgae cultivation could hamper the industrial application of microalgal CO2 capture from flue gas. © 2021
date: 2021
publisher: Elsevier Ltd
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116854837&doi=10.1016%2fj.jece.2021.106519&partnerID=40&md5=cf645f6aabe50f78fe93bdc0682a6bff
id_number: 10.1016/j.jece.2021.106519
full_text_status: none
publication: Journal of Environmental Chemical Engineering
volume: 9
number: 6
refereed: TRUE
issn: 22133437
citation:   Cheng, Y.W. and Lim, J.S.M. and Chong, C.C. and Lam, M.K. and Lim, J.W. and Tan, I.S. and Foo, H.C.Y. and Show, P.L. and Lim, S.  (2021) Unravelling CO2 capture performance of microalgae cultivation and other technologies via comparative carbon balance analysis.  Journal of Environmental Chemical Engineering, 9 (6).   ISSN 22133437