Advanced wastewater treatment using microalgae: effect of temperature on removal of nutrients and organic carbon

Shurair, Mohamad; AlMomani, Fares; Judd, Simon; Bhosale, Rahul R.; Kumar, Anand; Gosh, Ujjal Kumar; Khreisheh, Majeda

doi:10.1088/1755-1315/67/1/012032

Cited by 18 publications

(9 citation statements)

References 15 publications

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“…Microalgae are an encouraging technology for the treatment of WW [47][48][49][50][51][52]. For example, microalgae can uptake different constituents from PW and use them as a growth medium.…”

Section: Algae-based Biological Processesmentioning

confidence: 99%

Biological-Based Produced Water Treatment Using Microalgae: Challenges and Efficiency

et al. 2022

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Produced water (PW) is the most significant waste stream generated in the oil and gas industries. The generated PW has the potential to be a useful water source rather than waste. While a variety of technologies can be used for the treatment of PW for reuse, biological-based technologies are an effective and sustainable remediation method. Specifically, microalgae, which are a cost-effective and sustainable process that use nutrients to eliminate organic pollutants from PW during the bioremediation process. In these treatment processes, microalgae grow in PW free of charge, eliminate pollutants, and generate clean water that can be recycled and reused. This helps to reduce CO2 levels in the atmosphere while simultaneously producing biofuels, other useful chemicals, and added-value products. As such, this review focuses on PW generation in the oil and gas industry, PW characteristics, and examines the available technologies that can be used for PW remediation, with specific attention to algal-based technologies. In addition, the various aspects of algae growth and cultivation in PW, the effect of growth conditions, water quality parameters, and the corresponding treatment performance are presented. Lastly, this review emphasizes the bioremediation of PW using algae and highlights how to harvest algae that can be processed to generate biofuels for added-value products as a sustainable approach.

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Section: Algae-based Biological Processesmentioning

confidence: 99%

Biological-Based Produced Water Treatment Using Microalgae: Challenges and Efficiency

et al. 2022

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“…At this loading carbon limitation would be mitigated (Lundquist et al, 2010). Based on available data for the wastewater specification in the Arabian Gulf region (Al-Naimi, 2002;Mohamad et al, 2017;Shamim Ahmad et al, 1989), initial nutrient concentrations of 20 mg L -1 and 10 mg L -1 for N and P respectively were selected. The removal efficiencies for N and P were estimated to be 51% and 86% respectively, compared with negligible OC removal, similar to those reported by previous author (Lam and Lee, 2014).…”

Section: Solar Disinfection and Nutrientsmentioning

confidence: 99%

“…Algae can utilise both CO2 and organic carbon as the substrate, by autotrophic and mixotrophic growth respectively, such that the technology can potentially be employed for combined CO2 sequestration from flue gases and nutrient removal from wastewater (Almomani et al, 2017;AlMomani and Örmeci, 2016;Shurair et al, 2016;Almomani et al, 2014). Whilst the economics of this option are not normally favourable (Judd et al, 2017;Mohamad et al, 2017), the sub-tropical climate of the Arabian Gulf, where there is an abundance of natural light, makes MCT closer to being viable in this region than in less temperate zones…”

Section: Introductionmentioning

confidence: 99%

A technoeconomic assessment of microalgal culture technology implementation for combined wastewater treatment and CO2 mitigation in the Arabian Gulf

Ketife

Almomani

El‐Naas

et al. 2019

Process Safety and Environmental Protection

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A technoeconomic assessment (TEA) has been conducted of the feasibility of large-scale application of microalgal culture technology (MCT) to the combined mitigation of CO2 emissions from flue gases and nutrient discharges from wastewater in the Arabian Gulf. The assessment has incorporated the selection of the algal species and MCT technologies, the extent of nutrient removal, and the biomass/biofuel production rate. The cost benefit of the abatement of pollutants (in the form of CO2 and nutrient discharges) was included by assigning appropriate credits to these contributions. The overall economic viability was quantified as the break-even selling price (BESP) of the generated biocrude, taken to be the price at which the product must sell to cover the operating expenditure (OPEX). Based on available information and optimal operational conditions, the BESP was calculated as being $0.544 per kg biomass, equating to $0.9 L-1 for the extracted biocrude, the credited items contributing ~14% of this figure. The BESP was found to be most sensitive to the algal growth rate µ, the BESP changing by ±24% in response to a ±20% change in µ. Whilst the terms of reference of the study are limited to OPEX contributors, the potential for sustainability associated with the innately reliably high levels of natural light in the Gulf region appear to provide auspicious circumstances for large-scale implementation of MCT. For emerging economies with a comparable climate but without a mineral oil-based economy a greater financial benefit from the proposed scheme would arise.

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“…The discharge of untreated or inadequately treated effluents into rivers, lakes, aquifers and coastal waters supplies the aquatic environment with a myriad of chemical compounds that can impact aquatic organisms directly, by triggering hazardous effects, and indirectly, by changing some physicochemical features of the medium (e.g., oxygen concentration, pH, redox potential and nutrient concentration) [2,3].…”

Section: Introductionmentioning

confidence: 99%

Microalgae Water Bioremediation: Trends and Hot Topics

et al. 2020

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The need to reduce costs associated with the production of microalgae biomass has encouraged the coupling of process with wastewater treatment. Emerging pollutants in municipal, industrial, and agricultural wastewaters, ranging from pharmaceuticals to metals, endanger public health and natural resources. The use of microalgae has, in fact, been shown to be an efficient method in water-treatment processes and presents several advantages, such as carbon sequestration, and an opportunity to develop innovative bioproducts with applications to several industries. Using a bibliometric analysis software, SciMAT, a mapping of the research field was performed, analyzing the articles produced between 1981 and 2018, aiming to identifying the hot topics and trends studied until now. The application of microalgae on water bioremediation is an evolving research field that currently focuses on developing efficient and cost-effective treatments methods that also enable the production of add-value products, leading to a blue and circular economy.

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Advanced wastewater treatment using microalgae: effect of temperature on removal of nutrients and organic carbon

Cited by 18 publications

References 15 publications

Biological-Based Produced Water Treatment Using Microalgae: Challenges and Efficiency

Biological-Based Produced Water Treatment Using Microalgae: Challenges and Efficiency

A technoeconomic assessment of microalgal culture technology implementation for combined wastewater treatment and CO2 mitigation in the Arabian Gulf

Microalgae Water Bioremediation: Trends and Hot Topics

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