An integrated algal-bacterial system for the bio-conversion of wheat bran and treatment of rural domestic effluent

He, Yaqiang; Wang, Ruolan; Giurgiulescu, Liviu; Lu, Qian

doi:10.1016/j.jclepro.2017.07.119

Cited by 18 publications

(15 citation statements)

References 47 publications

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“…In spite of the competition on nutrients, the cooperation between microalgae and other microbes in the biofilm formation and nutrients uptake merits more attention. It was reported that extracellular polymeric substances (EPS) released by the bacteria function as "glue" to promote the formation of biofilm and extracellular enzymes produced by bacteria convert high-molecular-weight organics to low-molecular-weight organics, which could be assimilated by microalgae more efficiently [54][55][56] (Figure 1). However, to our knowledge, until now, mechanisms related with biofilm formation, nutrients conversion and assimilation, and algal-bacterial interaction in the RAB system have not been fully understood [57].…”

Section: Revolving Algal Biofilm (Rab) Systemmentioning

confidence: 99%

A Review on the Use of Microalgae for Sustainable Aquaculture

Han

et al. 2019

Applied Sciences

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162

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Traditional aquaculture provides food for humans, but produces a large amount of wastewater, threatening global sustainability. The antibiotics abuse and the water replacement or treatment causes safety problems and increases the aquaculture cost. To overcome environmental and economic problems in the aquaculture industry, a lot of efforts have been devoted into the application of microalgae for wastewater remediation, biomass production, and water quality control. In this review, the systematic description of the technologies required for microalgae-assisted aquaculture and the recent progress were discussed. It deeply reviews the problems caused by the discharge of aquaculture wastewater and introduces the principles of microalgae-assisted aquaculture. Some interesting aspects, including nutrients assimilation mechanisms, algae cultivation systems (raceway pond and revolving algal biofilm), wastewater pretreatment, algal-bacterial cooperation, harvesting technologies (fungi-assisted harvesting and flotation), selection of algal species, and exploitation of value-added microalgae as aquaculture feed, were reviewed in this work. In view of the limitations of recent studies, to further reduce the negative effects of aquaculture wastewater on global sustainability, the future directions of microalgae-assisted aquaculture for industrial applications were suggested.

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Section: Revolving Algal Biofilm (Rab) Systemmentioning

confidence: 99%

A Review on the Use of Microalgae for Sustainable Aquaculture

Han

et al. 2019

Applied Sciences

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162

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“…Specific problems caused by the earlier‐mentioned two issues include: (i) carbon deficiency limits the microalgae growth and slowdowns the uptake rates of other nutrients; (ii) suspended solids may not be degraded and assimilated efficiently by microalgae cells, resulting in low removal efficiency of nutrients. Similar problems were observed in the treatment of other sources of wastewater, such as food processing effluent, agricultural wastewater, and raw municipal wastewater, by microalgae culture …”

Section: Introductionmentioning

confidence: 54%

“…Microalgae, a category of unicellular phytoplankton with great performance in nutrients recovery, have been widely used in wastewater remediation . At the same time, nutrients in wastewater are converted to biomass which can be further processed to produce value‐added products, such as biofuel and bio‐fertilizer .…”

Section: Introductionmentioning

confidence: 99%

Contribution of glycerol addition and algal–bacterial cooperation to nutrients recovery: a study on the mechanisms of microalgae‐based wastewater remediation

Zeng

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND: Microalgae biotechnology is considered as a promising way to recover nutrients from centrate wastewater for value-added biomass production, but it is rarely adopted in a real-world application. Current study confirmed that carbon deficiency and suspended solids are two problems jeopardizing the microalgae-based wastewater remediation. In this regard, glycerol was added into centrate wastewater as exogenous carbon source and algal-bacterial cooperation for nutrients recovery assessment. RESULTS:The results showed that glycerol addition increased the biomass yield of algae from 1.54 to 2.58 g L −1 in 5-day culture and, at the same time, improved the removal efficiency of nitrogen and phosphorus, which were further assessed by pilot-scale experiments. Bacterial community analysis indicated that algal-bacterial cooperation involves carbon dioxide and oxygen exchange, phosphorus absorption, and solid organics degradation, forming a complementary nexus beneficial for wastewater treatment.CONCLUSION: Glycerol is proven to be a good carbon source for microalgae growth in the centrate wastewater. Additionally, the cooperation between microalgae and bacteria plays a key role in the nutrients removal during centrate wastewater. It is expected the technology and knowledge provided by current work can further promote the industrialization of microalgaebased wastewater remediation. Figure 6. Scheme for microalgae-based centrate wastewater treatment and mechanism of nutrients recovery. www.soci.org M Xu et al.wileyonlinelibrary.com/jctb

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“…Different from conventional waste treatment methods, this novel technology can realize the resources recycling from wastes and improve the sustainability of a closed environment . Previous studies made great progress in this field by revealing the mechanisms of nutrients uptake, growing algae for waste stream treatment, and studying the performance of algal–bacterial consortia, thus providing an alternative choice for the waste remediation in space mission …”

Section: Microalgae Biotechnology For Blssmentioning

confidence: 99%

“…64,65 Previous studies made great progress in this field by revealing the mechanisms of nutrients uptake, growing algae for waste stream treatment, and studying the performance of algal-bacterial consortia, wileyonlinelibrary.com/jctb thus providing an alternative choice for the waste remediation in space mission. 55,66,67 Mechanisms of nutrients uptake by algae As a group of unicellular microbes performing mixotrophic growth, microalgae can grow well in wastewater rich in organics. Assimilation and intracellular metabolisms of nitrogen, carbon and phosphorus by microalgal cells have been fully documented.…”

Section: Waste Treatment By Microalgaementioning

confidence: 99%

Microalgae biotechnology as an attempt for bioregenerative life support systems: problems and prospects

Yang

Liu

et al. 2019

J of Chemical Tech & Biotech

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Bioregenerative life support system (BLSS) plays a key role in the long‐duration manned space mission. Microalgae‐based BLSS was proposed decades ago but it had a variety of technical problems hindering its application in space mission. However, in recent years, a lot of effort has been devoted to this field and great progresses have been achieved in the research of microalgae‐based BLSS. Therefore, the main aim of this work is to summarize the previous progress and find the challenges faced by microalgae‐based BLSS technology. In this regard, this works introduces the concept of microalgae‐based BLSS and presents its development paths in the past decades. Additionally, technology updates in the aspects of microalgae‐based oxygen generation, value‐added biomass production as food alternative, and wastes treatment by microalgae are summarized. Challenges faced by microalgae‐based BLSS and potential solutions are discussed. This work provides a deep understanding of microalgae‐based BLSS and that it would be beneficial for promoting implementation of this novel technology in manned space missions. © 2019 Society of Chemical Industry

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An integrated algal-bacterial system for the bio-conversion of wheat bran and treatment of rural domestic effluent

Cited by 18 publications

References 47 publications

A Review on the Use of Microalgae for Sustainable Aquaculture

A Review on the Use of Microalgae for Sustainable Aquaculture

Contribution of glycerol addition and algal–bacterial cooperation to nutrients recovery: a study on the mechanisms of microalgae‐based wastewater remediation

Microalgae biotechnology as an attempt for bioregenerative life support systems: problems and prospects

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