Design Considerations of Microalgal Culture Ponds and Photobioreactors for Wastewater Treatment and Biomass Cogeneration

Le, Giang Truong; Tran, Dang-Thuan; Do, Thi Cam Van; Nguyen, Van Tuyen

doi:10.1007/978-981-13-2264-8_21

Cited by 5 publications

(6 citation statements)

References 157 publications

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“…Mutant libraries are good tools for studying the function of uncharacterized genes and are also very important for reverse genetic research. Insertional mutagenesis by random non-homologous end joining is the preferred method of choice for generating mutant libraries [ 253 ]. The studies found an increase in FAME and lipids in the insertional mutants of both N. salina and N. oceanica [ 254 , 255 ].…”

Section: Genetic Engineering Of Microalgae To Increase Lipid Productionmentioning

confidence: 99%

Microalgae biofuels: illuminating the path to a sustainable future amidst challenges and opportunities

Wang,

Ye,

et al. 2024

Biotechnol Biofuels

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The development of microalgal biofuels is of significant importance in advancing the energy transition, alleviating food pressure, preserving the natural environment, and addressing climate change. Numerous countries and regions across the globe have conducted extensive research and strategic planning on microalgal bioenergy, investing significant funds and manpower into this field. However, the microalgae biofuel industry has faced a downturn due to the constraints of high costs. In the past decade, with the development of new strains, technologies, and equipment, the feasibility of large-scale production of microalgae biofuel should be re-evaluated. Here, we have gathered research results from the past decade regarding microalgae biofuel production, providing insights into the opportunities and challenges faced by this industry from the perspectives of microalgae selection, modification, and cultivation. In this review, we suggest that highly adaptable microalgae are the preferred choice for large-scale biofuel production, especially strains that can utilize high concentrations of inorganic carbon sources and possess stress resistance. The use of omics technologies and genetic editing has greatly enhanced lipid accumulation in microalgae. However, the associated risks have constrained the feasibility of large-scale outdoor cultivation. Therefore, the relatively controllable cultivation method of photobioreactors (PBRs) has made it the mainstream approach for microalgae biofuel production. Moreover, adjusting the performance and parameters of PBRs can also enhance lipid accumulation in microalgae. In the future, given the relentless escalation in demand for sustainable energy sources, microalgae biofuels should be deemed a pivotal constituent of national energy planning, particularly in the case of China. The advancement of synthetic biology helps reduce the risks associated with genetically modified (GM) microalgae and enhances the economic viability of their biofuel production. Graphical Abstract

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Section: Genetic Engineering Of Microalgae To Increase Lipid Productionmentioning

confidence: 99%

Microalgae biofuels: illuminating the path to a sustainable future amidst challenges and opportunities

Wang,

Ye,

et al. 2024

Biotechnol Biofuels

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“…Algae generally need macro concentrations of C, N, and P, and micro concentrations of K, S, Ca, Mg, Fe, Na, and Si. The share of these macro and micro elements varies with different strains or consortia [44,61]. Le et al, 2019 reports that, despite the needed micro elements, the general molecular formula of microalgae can be presented as CH 1.83 O 0.48 N 0.11 P 0.01 .…”

Section: Wastewater Quality At the Inlet Of The Algae-based Reactormentioning

confidence: 99%

“…Le et al, 2019 reports that, despite the needed micro elements, the general molecular formula of microalgae can be presented as CH 1.83 O 0.48 N 0.11 P 0.01 . Since hydrogen, oxygen, and the microelements are supplied with wastewater, the limiting elements for the growth of the algae are C, N, and P [61]. The ratios between those three elements may play a significant role in the dominance of the selected algal strain/consortia over the natively grown cultures in the medium [61,62].…”

Section: Wastewater Quality At the Inlet Of The Algae-based Reactormentioning

confidence: 99%

“…Since hydrogen, oxygen, and the microelements are supplied with wastewater, the limiting elements for the growth of the algae are C, N, and P [61]. The ratios between those three elements may play a significant role in the dominance of the selected algal strain/consortia over the natively grown cultures in the medium [61,62].…”

Section: Wastewater Quality At the Inlet Of The Algae-based Reactormentioning

confidence: 99%

“…In this regard, another important ratio of macronutrients for the vital functions of algae that influences wastewater treatment efficiency is the N:P ratio. Even though this ratio is usually balanced by the internal processes of the algal biomass itself, Le et al, 2019 reports a globally applied ratio of 11:1 for optimal microalgal growth [61]. Arbib et al, 2013, on the other hand, reports that for optimal N and P removal, a ratio for N:P of 9:1 to 13:1 should be kept when using the Scenedesmus obliquus strain, and the algal behavior changes once this range is compromised [73].…”

Section: Nitrogen To Phosphorus (N:p) Ratiomentioning

confidence: 99%

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A Review on the Reliability and the Readiness Level of Microalgae-Based Nutrient Recovery Technologies for Secondary Treated Effluent in Municipal Wastewater Treatment Plants

Valchev

Ribarova

2022

Processes

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Algae-based wastewater treatment technologies are promising green technologies with huge economical potential and environmental co-benefits. However, despite the immense research, work, and achievement, no publications were found wherein these technologies have been successfully applied in an operational environment for nitrogen and phosphorus removal of secondary treated effluent in municipal wastewater treatment plants. Based on a literature review and targeted comprehensive analysis, the paper seeks to identify the main reasons for this. The reliability (considering inlet wastewater quality variations, operating conditions and process control, algae harvesting method, and produced biomass) as well as the technology readiness level for five types of reactors are discussed. The review shows that the reactors with a higher level of control over the technological parameters are more reliable but algal post-treatment harvesting and additional costs are barriers for their deployment. The least reliable systems continue to be attractive for research due to the non-complex operation and relieved expenditure costs. The rotating biofilm systems are currently undertaking serious development due to their promising features. Among the remaining research gaps and challenges for all the reactor types are the identification of the optimal algal strains, establishment of technological parameters, overcoming seasonal variations in the effluent’s quality, and biomass harvesting.

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Revolutionizing wastewater treatment with microalgae: Unveiling resource recovery, mechanisms, challenges, and future possibilities

Hasan,

Muhamad,

et al. 2023

Ecological Engineering

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Design Considerations of Microalgal Culture Ponds and Photobioreactors for Wastewater Treatment and Biomass Cogeneration

Cited by 5 publications

References 157 publications

Microalgae biofuels: illuminating the path to a sustainable future amidst challenges and opportunities

Microalgae biofuels: illuminating the path to a sustainable future amidst challenges and opportunities

A Review on the Reliability and the Readiness Level of Microalgae-Based Nutrient Recovery Technologies for Secondary Treated Effluent in Municipal Wastewater Treatment Plants

Revolutionizing wastewater treatment with microalgae: Unveiling resource recovery, mechanisms, challenges, and future possibilities

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