Bioflocculation formation of microalgae-bacteria in enhancing microalgae harvesting and nutrient removal from wastewater effluent

Thi Dong Phuong Nguyen; Thi Van Anh Le; Pau Loke Show; Thanh Thuy Nguyen; Minh Hien Tran; Thi Ngoc Thu Tran; Sze Ying Lee

doi:10.1016/j.biortech.2018.09.146

Bioflocculation formation of microalgae-bacteria in enhancing microalgae harvesting and nutrient removal from wastewater effluent

Thi Dong Phuong Nguyen, Thi Van Anh Le, Pau Loke Show, Thanh Thuy Nguyen, Minh Hien Tran, Thi Ngoc Thu Tran, Sze Ying Lee

Chemical and Petroleum Engineering

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

134 Scopus citations

Abstract

Microalgal bacterial flocs can be a promising approach for microalgae harvesting and wastewater treatment. The present study provides an insight on the bioflocs formation to enhance harvesting of Chlorella vulgaris and the removal of nutrients from seafood wastewater effluent. The results showed that the untreated seafood wastewater was the optimal culture medium for the cultivation and bioflocculation of C. vulgaris, with the flocculating activity of 92.0 ± 6.0%, total suspended solids removal of 93.0 ± 5.5%, and nutrient removal of 88.0 ± 2.2%. The bioflocs collected under this optimal condition contained dry matter of 107.2 ± 5.6 g·L⁻¹ and chlorophyll content of 25.5 ± 0.2 mg·L⁻¹. The results were promising when compared to those obtained from the auto-flocculation process that induced by the addition of calcium chloride and pH adjustment. Additionally, bacteria present in the wastewater aided to promote the formation of bioflocculation process.

Original language	British English
Pages (from-to)	34-39
Number of pages	6
Journal	Bioresource Technology
Volume	272
DOIs	https://doi.org/10.1016/j.biortech.2018.09.146
State	Published - Jan 2019

Keywords

Bioflocculation
Chlorella vulgaris
Harvesting
Microalgal bacterial flocs
Wastewater treatment

UN SDGs

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

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10.1016/j.biortech.2018.09.146

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@article{23a84cbb49554b51879872a351ae14ee,

title = "Bioflocculation formation of microalgae-bacteria in enhancing microalgae harvesting and nutrient removal from wastewater effluent",

abstract = "Microalgal bacterial flocs can be a promising approach for microalgae harvesting and wastewater treatment. The present study provides an insight on the bioflocs formation to enhance harvesting of Chlorella vulgaris and the removal of nutrients from seafood wastewater effluent. The results showed that the untreated seafood wastewater was the optimal culture medium for the cultivation and bioflocculation of C. vulgaris, with the flocculating activity of 92.0 ± 6.0%, total suspended solids removal of 93.0 ± 5.5%, and nutrient removal of 88.0 ± 2.2%. The bioflocs collected under this optimal condition contained dry matter of 107.2 ± 5.6 g·L−1 and chlorophyll content of 25.5 ± 0.2 mg·L−1. The results were promising when compared to those obtained from the auto-flocculation process that induced by the addition of calcium chloride and pH adjustment. Additionally, bacteria present in the wastewater aided to promote the formation of bioflocculation process.",

keywords = "Bioflocculation, Chlorella vulgaris, Harvesting, Microalgal bacterial flocs, Wastewater treatment",

author = "Nguyen, {Thi Dong Phuong} and Le, {Thi Van Anh} and Show, {Pau Loke} and Nguyen, {Thanh Thuy} and Tran, {Minh Hien} and Tran, {Thi Ngoc Thu} and Lee, {Sze Ying}",

note = "Funding Information: The first author would like to thank to the colleagues from Faculty of Chemical and Environmental Engineering, Danang University of Technology and Education for their advice. This work was supported by Funds for Science and Technology Development of University of Danang [B2017-DN06-04]. Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2019",

month = jan,

doi = "10.1016/j.biortech.2018.09.146",

language = "British English",

volume = "272",

pages = "34--39",

journal = "Bioresource Technology",

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}

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T1 - Bioflocculation formation of microalgae-bacteria in enhancing microalgae harvesting and nutrient removal from wastewater effluent

AU - Nguyen, Thi Dong Phuong

AU - Le, Thi Van Anh

AU - Show, Pau Loke

AU - Nguyen, Thanh Thuy

AU - Tran, Minh Hien

AU - Tran, Thi Ngoc Thu

AU - Lee, Sze Ying

N1 - Funding Information: The first author would like to thank to the colleagues from Faculty of Chemical and Environmental Engineering, Danang University of Technology and Education for their advice. This work was supported by Funds for Science and Technology Development of University of Danang [B2017-DN06-04]. Publisher Copyright: © 2018 Elsevier Ltd

PY - 2019/1

Y1 - 2019/1

N2 - Microalgal bacterial flocs can be a promising approach for microalgae harvesting and wastewater treatment. The present study provides an insight on the bioflocs formation to enhance harvesting of Chlorella vulgaris and the removal of nutrients from seafood wastewater effluent. The results showed that the untreated seafood wastewater was the optimal culture medium for the cultivation and bioflocculation of C. vulgaris, with the flocculating activity of 92.0 ± 6.0%, total suspended solids removal of 93.0 ± 5.5%, and nutrient removal of 88.0 ± 2.2%. The bioflocs collected under this optimal condition contained dry matter of 107.2 ± 5.6 g·L−1 and chlorophyll content of 25.5 ± 0.2 mg·L−1. The results were promising when compared to those obtained from the auto-flocculation process that induced by the addition of calcium chloride and pH adjustment. Additionally, bacteria present in the wastewater aided to promote the formation of bioflocculation process.

AB - Microalgal bacterial flocs can be a promising approach for microalgae harvesting and wastewater treatment. The present study provides an insight on the bioflocs formation to enhance harvesting of Chlorella vulgaris and the removal of nutrients from seafood wastewater effluent. The results showed that the untreated seafood wastewater was the optimal culture medium for the cultivation and bioflocculation of C. vulgaris, with the flocculating activity of 92.0 ± 6.0%, total suspended solids removal of 93.0 ± 5.5%, and nutrient removal of 88.0 ± 2.2%. The bioflocs collected under this optimal condition contained dry matter of 107.2 ± 5.6 g·L−1 and chlorophyll content of 25.5 ± 0.2 mg·L−1. The results were promising when compared to those obtained from the auto-flocculation process that induced by the addition of calcium chloride and pH adjustment. Additionally, bacteria present in the wastewater aided to promote the formation of bioflocculation process.

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KW - Chlorella vulgaris

KW - Harvesting

KW - Microalgal bacterial flocs

KW - Wastewater treatment

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Bioflocculation formation of microalgae-bacteria in enhancing microalgae harvesting and nutrient removal from wastewater effluent

Abstract

Keywords

UN SDGs

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