Techno-economic analysis of microalgae production with simultaneous dairy effluent treatment using a pilot-scale High Volume V-shape pond system

Kumar, Adepu K.; Sharma, Shubhangna; Dixit, Gaurav; Shah, Ekta; Patel, Aesha

doi:10.1016/j.renene.2019.07.087

Cited by 71 publications

(19 citation statements)

References 29 publications

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“…Biofilms normally develop on attaching materials with different shapes and structures (Li et al, 2019). These attached systems can ease biomass harvesting except for membrane filtration, where the fouling characteristics of the SMP and EPS matrix hinders the process (Kumar, Sharma, Dixit, Shah, & Patel, 2020; Luo, Henderson, & Le‐Clech, 2019). Advantages and disadvantages of some harvesting methods are discussed in Table 2.…”

Section: Microalgae Cultivationmentioning

confidence: 99%

Outdoor microalgae‐based urban wastewater treatment: Recent advances, applications, and future perspectives

et al. 2021

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Although microalgae‐based wastewater treatment has been traditionally carried out in extensive waste stabilization ponds, recent trends focus on the use of microalgae to apply the circular economy principles in the wastewater treatment sector due to the capacity of algae to absorb carbon dioxide while recovering nutrients from sewage. To this aim, the development of new intensive microalgae‐based systems with higher efficiency and level of process control is required. Results obtained for these systems at lab scale are generally promising. However, upscaling to outdoor conditions is often uncertain. Some advances have been made in terms of applying open systems at large scale. However, there are still some issues related to land requirements and the economic feasibility and robustness of the process that have to be overcome to widely implement these systems. This article aims at describing the main design and operating factors regarding outdoor microalgae cultivation. It will also explain some microalgae cultivation technologies to treat wastewater, showing their advantages, disadvantages, and the possibility to treat different wastewater streams with microalgae cultures. Future perspectives of this biotechnology will be commented as well. This article is categorized under: Engineering Water > Engineering Water

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Section: Microalgae Cultivationmentioning

confidence: 99%

Outdoor microalgae‐based urban wastewater treatment: Recent advances, applications, and future perspectives

et al. 2021

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“…biomass represented only 10% of the overall production costs. An NPV analysis for the commercial production of dried microalgal biomass (US$625 t −1 ) using dairy effluent as a nutrient and water supply also concluded that the process is commercially feasible for a plant size treating 1 million liter of dairy effluent over a 20-year period (Kumar et al, 2020). The sensitivity analyses using one quarter of today's food-grade phycocyanin sales price demonstrated that facilities producing phycocyanin as a sole product or phycocyanin and biofertilizer remain commercially viable whether co-located or not.…”

Section: Effect Of Co 2 -Supplementation On Biochemical Profiles Metmentioning

confidence: 99%

“…Instead of using product sales prices, reduction of biomass yields are an alternative parameter in sensitivity analyses. Reduction of biomass yields to one quarter of the original tonnage therefore had a comparable effect on NPV outcomes (Kumar et al, 2020). An obvious worst-case scenario for commercial production would be reduced yearly biomass yields (reduced to 33%) and reduced product sales prices (at 25% each of today's sales prices).…”

Section: Effect Of Co 2 -Supplementation On Biochemical Profiles Metmentioning

confidence: 99%

Bioproduct Potential of Outdoor Cultures of Tolypothrix sp.: Effect of Carbon Dioxide and Metal-Rich Wastewater

Velu

Cirés

Brinkman

et al. 2020

Front. Bioeng. Biotechnol.

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Rising CO 2 levels, associated climatic instability, freshwater scarcity and diminishing arable land exacerbate the challenge to maintain food security for the fast growing human population. Although coal-fired power plants generate large amounts of CO 2 emissions and wastewater, containing environmentally unsafe concentrations of metals, they ensure energy security. Nitrogen (N 2 )-fixation by cyanobacteria eliminate nitrogen fertilization costs, making them promising candidates for remediation of waste CO 2 and metals from macronutrient-poor ash dam water and the biomass is suitable for phycocyanin and biofertilizer product development. Here, the effects of CO 2 and metal mixtures on growth, bioproduct and metal removal potential were investigated for the self-flocculating, N 2 -fixing freshwater cyanobacterium Tolypothrix sp. Tolypothrix sp. was grown outdoors in simulated ash dam wastewater (SADW) in 500 L vertical bag suspension cultures and as biofilms in modified algal-turf scrubbers. The cultivation systems were aerated with air containing either 15% CO 2 (v/v) or not. CO 2 -fertilization resulted in ∼1.25-and 1.45-fold higher biomass productivities and ∼40 and 27% increased phycocyanin and phycoerythrin contents for biofilm and suspension cultures, respectively. CO 2 had no effect on removal of Al, As, Cu, Fe, Sr, and Zn, while Mo removal increased by 37% in both systems. In contrast, Ni removal was reduced in biofilm systems, while Se removal increased by 73% in suspension cultures. Based on biomass yields and biochemical data obtained, net present value (NPV) and sensitivities analyses used four bioproduct scenarios: (1) phycocyanin sole product, (2) biofertilizer sole product, (3) 50% phycocyanin and 50% biofertilizer, and (4) 100% phycocyanin and 100% biofertilizer (residual biomass) for power station co-located and not colocated 10 ha facilities over a 20-year period. Economic feasibility for the production of food-grade phycocyanin either as a sole product or with co-production of biofertilizer was demonstrated for CO 2 -enriched vertical and raceway suspension cultures raised without nitrogen-fertilization and co-location with power stations significantly increased profit margins.

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“…Wastewater from the dairy industry has been described as an excellent source of nutrients for microalgae growth (Gonçalves et al, 2017). The cultivation of microalgae in dairy e uents (which is rich in C:N:P) replaces the culture medium containing mineral nutrients and fresh water generally used for microalgae cultivation, thereby reducing the cost of production (Kumar et al, 2020). According to Valizadeh and Davarpanah (2020), biological puri cation of dairy e uents is an e cient and essential approach that leads to a healthy and clean environmental ecosystem.…”

Section: Introductionmentioning

confidence: 99%

Microalgae Cultivation in Wastewater From Agricultural Industries to Benefit Next Generation of Bioremediation: A Bibliometric Analysis

Melo

Ribeiro

Telles

et al. 2021

Preprint

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The aim of this study is to provide a bibliometric analysis and mapping of existing scientific papers, focusing on microalgae cultivation coupled with biomass production and bioremediation of wastewater from cassava, dairy, and coffee industries. Using the Web of Science (WoS) database for the period 1996–2019, a search was performed using a keyword strategy, aiming at segregating the papers in groups. The keywords used in this search were “wastewater treatment,” “microalgae,” “cassava,” “dairy,” and “coffee” for the first step, resulting in 114 papers; for the second step, we used the keywords “wastewater treatment,” “biomass productivity,” “microalgae,” “economic viability,” and “environmental impacts,” which resulted in 29 scientific papers. In these papers, keywords such as “carbon dioxide biofixation” and “removal of nutrients by the production of biomass by microalgae” followed by “environmental and economic impacts” were highlighted. Some of these papers also presented an analysis of the economic feasibility of the process, including costs of production systems, which reveal the state-of-the-art setup required to make the cultivation of microalgae economically viable. Research in eco-industrial parks is needed to improve the integration of microalgae production systems using wastewater as a source of nutrients, aiming to achieve the global goal of bioremediation and clean alternatives for renewable energy generation.

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Techno-economic analysis of microalgae production with simultaneous dairy effluent treatment using a pilot-scale High Volume V-shape pond system

Cited by 71 publications

References 29 publications

Outdoor microalgae‐based urban wastewater treatment: Recent advances, applications, and future perspectives

Outdoor microalgae‐based urban wastewater treatment: Recent advances, applications, and future perspectives

Bioproduct Potential of Outdoor Cultures of Tolypothrix sp.: Effect of Carbon Dioxide and Metal-Rich Wastewater

Microalgae Cultivation in Wastewater From Agricultural Industries to Benefit Next Generation of Bioremediation: A Bibliometric Analysis

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