Current progress and future prospect of microalgal biomass harvest using various flocculation technologies

Wan, Chunrong; Alam, Md. Asraful; Zhao, Xin‐Qing; Zhang, Xiaoyue; Guo, Suo-Lian; Ho, Shih‐Hsin; Chang, Jo‐Shu; Bai, Feng‐Wu

doi:10.1016/j.biortech.2014.11.081

Cited by 244 publications

(79 citation statements)

References 72 publications

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“…Current research focuses on flocculation as this method is scalable and does not require any amount of electricity (Wan et al, 2015), except for electroflocculation. Specifically, more focus is given on optimizing the use of chemicals and biomaterials or even new synthetic materials.…”

Section: Harvesting Of Nannochloropsis Biomassmentioning

confidence: 99%

A biorefinery for Nannochloropsis: Induction, harvesting, and extraction of EPA-rich oil and high-value protein

Chua

Schenk

2017

Bioresource Technology

117

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Please cite this article as: Chua, E.T., Schenk, P.M., A biorefinery for Nannochloropsis: induction, harvesting, and extraction of EPA-rich oil and high-value protein, Bioresource Technology (2017), doi: http://dx.doi.org/10. 1016/ j.biortech.2017.05.124 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractMicroalgae have been studied as biofactories for almost four decades. Yet, even until today, many aspects of microalgae farming and processing are still considered exploratory because of the uniqueness of each microalgal species. Thus, it is important to develop the entire process of microalgae farming: from culturing to harvesting, and down to extracting the desired high-value products. Based on its rapid growth and high oil productivities, Nannochloropsis sp. is of particular interest to many industries for the production of highvalue oil containing omega-3 fatty acids, specifically eicosapentaenoic acid (EPA), but also several other products. This review compares the various techniques for induction, harvesting, and extraction of EPA-rich oil and high-value protein explored by academia and industry to develop a multi-product Nannochloropsis biorefinery. Knowledge gaps and opportunities are discussed for culturing and inducing fatty acid biosynthesis, biomass harvesting, and extracting EPA-rich oil and high-value protein from the biomass of Nannochloropsis sp.

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Section: Harvesting Of Nannochloropsis Biomassmentioning

confidence: 99%

A biorefinery for Nannochloropsis: Induction, harvesting, and extraction of EPA-rich oil and high-value protein

Chua

Schenk

2017

Bioresource Technology

117

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“…Wan et al [101] thought that flocculation was a promising method to harvest microalgae with low cost from mass culture when considering harvesting efficiency, operation economics and technological feasibility. However, there are still a lot of challenges in microalgae biomass harvesting using efficient and cost effective flocculating technologies.…”

Section: Harvesting and Extractionmentioning

confidence: 99%

“…Various novel flocculation technologies have been developed. The flocculation process induced by microorganism, extracellular polymer substances, or bioflocculants (or called flocculating agents) produced by microbes is termed as bioflocculation, which distinguishes itself by being environmentally friendly among the flocculation methods used for microalgae harvesting [101]. Fungal/bacterial-assisted flocculation is currently receiving increased attention because of its high harvesting efficiency.…”

Section: Harvesting and Extractionmentioning

confidence: 99%

Microalgal biofuel revisited: An informatics-based analysis of developments to date and future prospects

et al. 2015

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“…In this context, bio-flocculation and auto-flocculation as novel flocculation based methods are highlighted among others, as it could be shown recently. Nevertheless, there are still some technical barriers to decrease costs and complexity of downstream processing in microalgae production that might be solved aiming future industrial applications [78,79].…”

Section: Downstream Processingmentioning

confidence: 99%

Utilization of Volatile Fatty Acids from Microalgae for the Production of High Added Value Compounds

et al. 2017

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Volatile Fatty Acids (VFA) are small organic compounds that have attracted much attention lately, due to their use as a carbon source for microorganisms involved in the production of bioactive compounds, biodegradable materials and energy. Low cost production of VFA from different types of waste streams can occur via dark fermentation, offering a promising approach for the production of biofuels and biochemicals with simultaneous reduction of waste volume. VFA can be subsequently utilized in fermentation processes and efficiently transformed into bioactive compounds that can be used in the food and nutraceutical industry for the development of functional foods with scientifically sustained claims. Microalgae are oleaginous microorganisms that are able to grow in heterotrophic cultures supported by VFA as a carbon source and accumulate high amounts of valuable products, such as omega-3 fatty acids and exopolysaccharides. This article reviews the different types of waste streams in concert with their potential to produce VFA, the possible factors that affect the VFA production process and the utilization of the resulting VFA in microalgae fermentation processes. The biology of VFA utilization, the potential products and the downstream processes are discussed in detail.

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Current progress and future prospect of microalgal biomass harvest using various flocculation technologies

Cited by 244 publications

References 72 publications

A biorefinery for Nannochloropsis: Induction, harvesting, and extraction of EPA-rich oil and high-value protein

A biorefinery for Nannochloropsis: Induction, harvesting, and extraction of EPA-rich oil and high-value protein

Microalgal biofuel revisited: An informatics-based analysis of developments to date and future prospects

Utilization of Volatile Fatty Acids from Microalgae for the Production of High Added Value Compounds

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