A novel one-step method for oil-rich biomass production and harvesting by co-cultivating microalgae with filamentous fungi in molasses wastewater

Yang, Limin; Li, Huankai; Wang, Qin

doi:10.1016/j.biortech.2018.12.036

Cited by 113 publications

(47 citation statements)

References 41 publications

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“…Previous studies have successfully used many fungal species, such as Penicillium sp. and Aspergillus sp., for pellets formation and microalgae harvest . However, the safety assessment of microbial pellets for aquatic animals feed has not been widely conducted.…”

Section: Discussionmentioning

confidence: 99%

“…Criteria for the construction of beneficial microbial consortia include: microorganisms do not release toxic or harmful materials threatening the survival of aquatic animals; microorganisms have synergistic cooperation while do not have serious interspecific competition. In recent years, consortia consisting of microalgae and other microorganisms, such as Azospirillum sp., Acinetobacter sp., and Aspergillus sp., which perform well in wastewater remediation, have been widely reported . As shown in Fig.…”

Section: Microbial Community‐assisted Aquaponicsmentioning

confidence: 97%

“…Fungi‐assisted microalgae harvest was developed as a novel technology to harvest suspended microalgae in a cost‐saving and environmentally‐friendly way . Suspended microalgae cells are able to attach on the fungal pellets which could be harvested by simple filtration with very low energy consumption in a real‐world application . Furthermore, as no toxic chemicals were introduced into the harvest process in this emerging technology, pellets which are consisted of edible filamentous fungi and microalgae might be directly used as aquatic animals feed.…”

Section: Microbial Community‐assisted Aquaponicsmentioning

confidence: 99%

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Microbial community‐assisted water quality control and nutrients recovery: emerging technologies for the sustainable development of aquaponics

Yang

Chen

Yan

et al. 2019

J of Chemical Tech & Biotech

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Aquaponics is considered as a possible method to produce aquatic animals and plants in an environmentally-friendly way, but its commercialization is seriously hindered owing to some technical and economic problems. Recently, the integration of microbial community with aquaponics is on the way to becoming the next-generation technology for the sustainable development and commercialization of the aquaponics industry. This article provides an authoritative discussion on the novel microbial community-assisted aquaponics, which will be emerging from the research environment to industrial application in the coming future. Principles and key technologies of this novel aquaponics, as well as the potential challenges to its commercialization, are discussed. It is expected that the emerging technologies discussed in this work could address the existed technical problems and further promote the commercialization of aquaponics.

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Section: Discussionmentioning

confidence: 99%

Section: Microbial Community‐assisted Aquaponicsmentioning

confidence: 97%

Section: Microbial Community‐assisted Aquaponicsmentioning

confidence: 99%

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Microbial community‐assisted water quality control and nutrients recovery: emerging technologies for the sustainable development of aquaponics

Yang

Chen

Yan

et al. 2019

J of Chemical Tech & Biotech

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“…Rajendran et al [22] verified the effectiveness of lichens between C. vulgaris and M. circinelloides by employing a polypropylene and cotton yarn in the ethanol co-products industry, in which the high concentration of P (818 mg•L −1 ) and N (924 mg•L −1 ) nutrients in the samples were recovered in the microalgae biomass by 55.7% and 74%, respectively, with a COD reduction in up to 65.6%. Yang et al [20] also proposed ammonia and total solids recovery, by lichens of Chorella sp. and Aspergillus sp.…”

Section: Other Strategies Involving the Use Of Mature Fungal Myceliummentioning

confidence: 99%

Consortium Growth of Filamentous Fungi and Microalgae: Evaluation of Different Cultivation Strategies to Optimize Cell Harvesting and Lipid Accumulation

et al. 2020

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This study aims to evaluate the potential of consortium biomass formation between Mucor circinelloides, an oleaginous filamentous fungal species, and Chlorella vulgaris, in order to promote a straightforward approach to harvest microalgal cells and to evaluate the lipid production in the consortium system. A synthetic medium with glucose (2 g·L−1) and mineral nutrients essential for both fungi and algae was selected. Four different inoculation strategies were assessed, considering the effect of simultaneous vs. separate development of fungal spores and algae cells, and the presence of a supporting matrix aiming at the higher recovery of algae cell rates. The results were evaluated in terms of consortium biomass composition, demonstrating that the strategy using a mature fungal mycelium with a higher algae count may provide biomass samples with up to 79% of their dry weight as algae, still promoting recovery rates greater than 97%. The findings demonstrate a synergistic effect on the lipid accumulation by the fungal strain, at around a fourfold increase when compared to the axenic control, with values in the range of 23% of dry biomass weight. Furthermore, the fatty acid profile from the samples presents a balance between saturated and unsaturated fatty acids that is likely to present an adequate balance for applications such as biodiesel production.

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“…The use of oleaginous fungi for SCO production is beneficial since fungal mycelia's entanglement decreases medium viscosity and eases cell harvesting (Reis et al, 2019). A recent study by Yang L. et al (2019) showed that the co-cultivation of oleaginous algae and fungi aided in harvesting the resulting lipids and improved lipid quality in comparison to mono-cultivation. This could be another strategy that can be adopted in a SCO biorefinery to improve the quality of SCOs with downstream economic implications.…”

Section: Toward a Biorefinery Conceptmentioning

confidence: 99%

The Potential of Single-Cell Oils Derived From Filamentous Fungi as Alternative Feedstock Sources for Biodiesel Production

et al. 2021

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Microbial lipids, also known as single-cell oils (SCOs), are highly attractive feedstocks for biodiesel production due to their fast production rates, minimal labor requirements, independence from seasonal and climatic changes, and ease of scale-up for industrial processing. Among the SCO producers, the less explored filamentous fungi (molds) exhibit desirable features such as a repertoire of hydrolyzing enzymes and a unique pellet morphology that facilitates downstream harvesting. Although several oleaginous filamentous fungi have been identified and explored for SCO production, high production costs and technical difficulties still make the process less attractive compared to conventional lipid sources for biodiesel production. This review aims to highlight the ability of filamentous fungi to hydrolyze various organic wastes for SCO production and explore current strategies to enhance the efficiency and cost-effectiveness of the SCO production and recovery process. The review also highlights the mechanisms and components governing lipogenic pathways, which can inform the rational designs of processing conditions and metabolic engineering efforts for increasing the quality and accumulation of lipids in filamentous fungi. Furthermore, we describe other process integration strategies such as the co-production with hydrogen using advanced fermentation processes as a step toward a biorefinery process. These innovative approaches allow for integrating upstream and downstream processing units, thus resulting in an efficient and cost-effective method of simultaneous SCO production and utilization for biodiesel production.

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A novel one-step method for oil-rich biomass production and harvesting by co-cultivating microalgae with filamentous fungi in molasses wastewater

Cited by 113 publications

References 41 publications

Microbial community‐assisted water quality control and nutrients recovery: emerging technologies for the sustainable development of aquaponics

Microbial community‐assisted water quality control and nutrients recovery: emerging technologies for the sustainable development of aquaponics

Consortium Growth of Filamentous Fungi and Microalgae: Evaluation of Different Cultivation Strategies to Optimize Cell Harvesting and Lipid Accumulation

The Potential of Single-Cell Oils Derived From Filamentous Fungi as Alternative Feedstock Sources for Biodiesel Production

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