Simultaneous nutrient removal, optimised CO2 mitigation and biofuel feedstock production by Chlorogonium sp. grown in secondary treated non-sterile saline sewage effluent

Kwan Yin Lee; Tsz Wai Ng; Guiying Li; Taicheng An; Ka Ki Kwan; King Ming Chan; Guocheng Huang; Ho Yin Yip; Po Keung Wong

doi:10.1016/j.jhazmat.2015.04.075

Simultaneous nutrient removal, optimised CO₂ mitigation and biofuel feedstock production by Chlorogonium sp. grown in secondary treated non-sterile saline sewage effluent

Kwan Yin Lee
, Tsz Wai Ng
, Guiying Li
, Taicheng An
, Ka Ki Kwan
, King Ming Chan
, Guocheng Huang
, Ho Yin Yip
, Po Keung Wong

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

The phycoremediation process has great potential for effectively addressing environmental pollution. To explore the capabilities of simultaneous algal nutrient removal, CO₂ mitigation and biofuel feedstock production from spent water resources, a Chlorogonium sp. isolated from a tilapia pond in Hong Kong was grown in non-sterile saline sewage effluent for a bioremediation study. With high removal efficiencies of NH₃-N (88.35±14.39%), NO₃^--N (85.39±14.96%), TN (93.34±6.47%) and PO₄^3--P (91.80±17.44%), Chlorogonium sp. achieved a CO₂ consumption rate of 58.96mgL^-1d^-1, which was optimised by the response surface methodology. Under optimised conditions, the lipid content of the algal biomass reached 24.26±2.67%. Overall, the isolated Chlorogonium sp. showed promising potential in the simultaneous purification of saline sewage effluent in terms of tertiary treatment and CO₂ sequestration while delivering feedstock for potential biofuel production in a waste-recycling manner.

Original language	English
Pages (from-to)	241-250
Number of pages	10
Journal	Journal of Hazardous Materials
Volume	297
DOIs	https://doi.org/10.1016/j.jhazmat.2015.04.075
Publication status	Published - 1 Oct 2015
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 12 Responsible Consumption and Production

Keywords

Algal biofuel
CO capture
Microalgae
Phycoremediation
Saline sewage effluent treatment

Access to Document

10.1016/j.jhazmat.2015.04.075

Cite this

Lee, K. Y., Ng, T. W., Li, G., An, T., Kwan, K. K., Chan, K. M., Huang, G., Yip, H. Y., & Wong, P. K. (2015). Simultaneous nutrient removal, optimised CO₂ mitigation and biofuel feedstock production by Chlorogonium sp. grown in secondary treated non-sterile saline sewage effluent. Journal of Hazardous Materials, 297, 241-250. https://doi.org/10.1016/j.jhazmat.2015.04.075

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abstract = "The phycoremediation process has great potential for effectively addressing environmental pollution. To explore the capabilities of simultaneous algal nutrient removal, CO2 mitigation and biofuel feedstock production from spent water resources, a Chlorogonium sp. isolated from a tilapia pond in Hong Kong was grown in non-sterile saline sewage effluent for a bioremediation study. With high removal efficiencies of NH3-N (88.35±14.39\%), NO3--N (85.39±14.96\%), TN (93.34±6.47\%) and PO43--P (91.80±17.44\%), Chlorogonium sp. achieved a CO2 consumption rate of 58.96mgL-1d-1, which was optimised by the response surface methodology. Under optimised conditions, the lipid content of the algal biomass reached 24.26±2.67\%. Overall, the isolated Chlorogonium sp. showed promising potential in the simultaneous purification of saline sewage effluent in terms of tertiary treatment and CO2 sequestration while delivering feedstock for potential biofuel production in a waste-recycling manner.",

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AU - Ng, Tsz Wai

AU - Li, Guiying

AU - An, Taicheng

AU - Kwan, Ka Ki

AU - Chan, King Ming

AU - Huang, Guocheng

AU - Yip, Ho Yin

AU - Wong, Po Keung

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N2 - The phycoremediation process has great potential for effectively addressing environmental pollution. To explore the capabilities of simultaneous algal nutrient removal, CO2 mitigation and biofuel feedstock production from spent water resources, a Chlorogonium sp. isolated from a tilapia pond in Hong Kong was grown in non-sterile saline sewage effluent for a bioremediation study. With high removal efficiencies of NH3-N (88.35±14.39%), NO3--N (85.39±14.96%), TN (93.34±6.47%) and PO43--P (91.80±17.44%), Chlorogonium sp. achieved a CO2 consumption rate of 58.96mgL-1d-1, which was optimised by the response surface methodology. Under optimised conditions, the lipid content of the algal biomass reached 24.26±2.67%. Overall, the isolated Chlorogonium sp. showed promising potential in the simultaneous purification of saline sewage effluent in terms of tertiary treatment and CO2 sequestration while delivering feedstock for potential biofuel production in a waste-recycling manner.

AB - The phycoremediation process has great potential for effectively addressing environmental pollution. To explore the capabilities of simultaneous algal nutrient removal, CO2 mitigation and biofuel feedstock production from spent water resources, a Chlorogonium sp. isolated from a tilapia pond in Hong Kong was grown in non-sterile saline sewage effluent for a bioremediation study. With high removal efficiencies of NH3-N (88.35±14.39%), NO3--N (85.39±14.96%), TN (93.34±6.47%) and PO43--P (91.80±17.44%), Chlorogonium sp. achieved a CO2 consumption rate of 58.96mgL-1d-1, which was optimised by the response surface methodology. Under optimised conditions, the lipid content of the algal biomass reached 24.26±2.67%. Overall, the isolated Chlorogonium sp. showed promising potential in the simultaneous purification of saline sewage effluent in terms of tertiary treatment and CO2 sequestration while delivering feedstock for potential biofuel production in a waste-recycling manner.

KW - Algal biofuel

KW - CO capture

KW - Microalgae

KW - Phycoremediation

KW - Saline sewage effluent treatment

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