Synergistic integration of electrocoagulation and algal cultivation to treat liquid anaerobic digestion effluent and accumulate algal biomass

Zhiguo Liu, Yan Liu

    Research output: Research - peer-reviewArticle

    • 5 Citations

    Abstract

    An integrated system of electrocoagulation and algal cultivation was developed to treat a high strength wastewater - anaerobic digestion liquid effluent for reclaimed water and value-added algal biomass production. The integrated system synergistically takes advantages of both electrocoagulation and algal cultivation to enhance the efficiencies of wastewater treatment. The electrocoagulation treated wastewater had low turbidity with better light penetration (108 NTU) to enable algal growth. The algal cultivation had high removal efficiencies of phosphorus (99.4%) and nitrogen (88.2%). The dissolved iron in the electrocoagulation treated wastewater enhanced lipid accumulation of the algae. The results present that total phosphorus and nitrogen in the reclaimed water were 0.78 g L-1 and 35.5 mg L-1 respectively, and the harvested algal biomass had 35% of lipid, 53% of protein, and 6.4% of carbohydrate. This study concluded a new route for agricultural wastewater treatment that turns wastewater from an environmental liability into a valuable asset.

    LanguageEnglish (US)
    Pages89-94
    Number of pages6
    JournalProcess Biochemistry
    Volume51
    Issue number1
    DOIs
    StatePublished - Jan 1 2016

    Profile

    Anaerobic digestion
    Effluents
    Biomass
    Wastewater
    Liquids
    Electrocoagulation
    Waste Water
    Digestion
    Wastewater treatment
    Phosphorus
    Nitrogen
    Lipids
    Water
    Therapeutics
    Turbidity
    Algae
    Iron
    Carbohydrates
    Proteins
    Light

    Keywords

    • Algal biomass
    • Anaerobic digestion liquid effluent
    • Chlorella vulgaris
    • Electrocoagulation
    • Nitrogen
    • Phosphorus

    ASJC Scopus subject areas

    • Bioengineering
    • Biochemistry
    • Applied Microbiology and Biotechnology

    Cite this

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    abstract = "An integrated system of electrocoagulation and algal cultivation was developed to treat a high strength wastewater - anaerobic digestion liquid effluent for reclaimed water and value-added algal biomass production. The integrated system synergistically takes advantages of both electrocoagulation and algal cultivation to enhance the efficiencies of wastewater treatment. The electrocoagulation treated wastewater had low turbidity with better light penetration (108 NTU) to enable algal growth. The algal cultivation had high removal efficiencies of phosphorus (99.4%) and nitrogen (88.2%). The dissolved iron in the electrocoagulation treated wastewater enhanced lipid accumulation of the algae. The results present that total phosphorus and nitrogen in the reclaimed water were 0.78 g L-1 and 35.5 mg L-1 respectively, and the harvested algal biomass had 35% of lipid, 53% of protein, and 6.4% of carbohydrate. This study concluded a new route for agricultural wastewater treatment that turns wastewater from an environmental liability into a valuable asset.",
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    TY - JOUR

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    AU - Liu,Zhiguo

    AU - Liu,Yan

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    Y1 - 2016/1/1

    N2 - An integrated system of electrocoagulation and algal cultivation was developed to treat a high strength wastewater - anaerobic digestion liquid effluent for reclaimed water and value-added algal biomass production. The integrated system synergistically takes advantages of both electrocoagulation and algal cultivation to enhance the efficiencies of wastewater treatment. The electrocoagulation treated wastewater had low turbidity with better light penetration (108 NTU) to enable algal growth. The algal cultivation had high removal efficiencies of phosphorus (99.4%) and nitrogen (88.2%). The dissolved iron in the electrocoagulation treated wastewater enhanced lipid accumulation of the algae. The results present that total phosphorus and nitrogen in the reclaimed water were 0.78 g L-1 and 35.5 mg L-1 respectively, and the harvested algal biomass had 35% of lipid, 53% of protein, and 6.4% of carbohydrate. This study concluded a new route for agricultural wastewater treatment that turns wastewater from an environmental liability into a valuable asset.

    AB - An integrated system of electrocoagulation and algal cultivation was developed to treat a high strength wastewater - anaerobic digestion liquid effluent for reclaimed water and value-added algal biomass production. The integrated system synergistically takes advantages of both electrocoagulation and algal cultivation to enhance the efficiencies of wastewater treatment. The electrocoagulation treated wastewater had low turbidity with better light penetration (108 NTU) to enable algal growth. The algal cultivation had high removal efficiencies of phosphorus (99.4%) and nitrogen (88.2%). The dissolved iron in the electrocoagulation treated wastewater enhanced lipid accumulation of the algae. The results present that total phosphorus and nitrogen in the reclaimed water were 0.78 g L-1 and 35.5 mg L-1 respectively, and the harvested algal biomass had 35% of lipid, 53% of protein, and 6.4% of carbohydrate. This study concluded a new route for agricultural wastewater treatment that turns wastewater from an environmental liability into a valuable asset.

    KW - Algal biomass

    KW - Anaerobic digestion liquid effluent

    KW - Chlorella vulgaris

    KW - Electrocoagulation

    KW - Nitrogen

    KW - Phosphorus

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