Algae-Based Wastewater Treatment for Biofuel Production: Processes, Species, and Extraction Methods

Lyon, Stephen; Ahmadzadeh, Hossein; Murry, Marcia A.

doi:10.1007/978-3-319-16640-7_6

Cited by 13 publications

(6 citation statements)

References 69 publications

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“…We have also presented enhancements to the biosortion capacity of biosorbents and reviewed the effective parameters in the biosorption of specific heavy metal ions by algal biomass [24][25][26]. We have also discussed different approaches that can be used to reduce the cost of algae cultivation by linking biomass production with wastewater treatment in order to grow algae in wastewater for biological treatment of wastewater and simultaneous production of biofuel [27].…”

Section: The Biosorption Of Heavy Metal Ions By Various Mechanisms Sumentioning

confidence: 99%

“…Hybrid wastewater treatment and algae cultivation systems could decrease unit costs of energy by 20-25%, and largely eliminate the cost of nutrient and freshwater supplementation [169]. Coupling of the production of biofuel-directed microalgae with bioremediation of wastewaters provides a pathway to combat eutrophication and industrial pollution in conjunction with the renewable energy production [27].…”

Section: Coupling Wastewater Treatment and Biofuel Productionmentioning

confidence: 99%

“…Bioremoval of heavy metal ions using microalgae has been considered as an environmentally and economically sustainable approach to remove toxic metals from wastewaters [170]. On the cost side, the need to reduce requirements for chemical remediation of wastewaters, minimizes freshwater consumption, enhances the suitability of algal introduction in the wastewater treatment process [27,[171][172][173]. Besides, a wide range of valuable by-products (such as bioethanol and biodiesel), valuable nutrients and bioactive compounds can be extracted from the produced biomass [168].…”

Section: Coupling Wastewater Treatment and Biofuel Productionmentioning

confidence: 99%

See 2 more Smart Citations

Potential use of algae for heavy metal bioremediation, a critical review

Zeraatkar

Ahmadzadeh

Talebi

et al. 2016

Journal of Environmental Management

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474

152

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Algae have several industrial applications that can lower the cost of biofuel co-23 production. Among these co-production applications, environmental and wastewater 24 bioremediation are increasingly important. Heavy metal pollution and its implications 25 for public health and the environment have led to increased interest in developing 26 environmental biotechnology approaches. We review the potential for algal biosorption 27 and/or neutralization of the toxic effects of heavy metal ions, primarily focusing on their 28 cellular structure, pretreatment, modification, as well as potential application of genetic 29 engineering in biosorption performance. We evaluate pretreatment, immobilization, and 30 factors affecting biosorption capacity, such as initial metal ion concentration, biomass 31 concentration, initial pH, time, temperature, and interference of multi metal ions and 32 introduce molecular tools to develop engineered algal strains with higher biosorption 33 capacity and selectivity. We conclude that consideration of these parameters can lead to 34 the development of low-cost micro and macroalgae cultivation with high bioremediation 35 potential. 36 37

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Section: The Biosorption Of Heavy Metal Ions By Various Mechanisms Sumentioning

confidence: 99%

Section: Coupling Wastewater Treatment and Biofuel Productionmentioning

confidence: 99%

Section: Coupling Wastewater Treatment and Biofuel Productionmentioning

confidence: 99%

See 1 more Smart Citation

Potential use of algae for heavy metal bioremediation, a critical review

Zeraatkar

Ahmadzadeh

Talebi

et al. 2016

Journal of Environmental Management

Self Cite

474

152

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“…Microalgae technology has low‐power consumption (up to 50% lower than traditional mechanical methods), cheap, simple in operation, and efficient in CO 2 sequestration. [ 46 ] Given that 70% of the cost of conventional wastewater remediation is associated with secondary and tertiary processes, [ 85 ] arising from energy costs due to oxygenation and dosing of chemicals, industrial ecology (when integrated with wastewater treatment) could not only eliminate this enormous costs but spinoff high‐value biomolecules. These valuable compounds can be processed and purified for utilization in cosmetic, chemical, pharmaceutical industries or the total biomass used for the manufacture of biopolymers and bioplastics.…”

Section: Feasibility Of Microalgae‐based Wastewater Treatment In Devementioning

confidence: 99%

Algal Cultivation for Treating Wastewater in African Developing Countries: A Review

Nwoba

Vadiveloo

Ogbonna

et al. 2020

CLEAN Soil Air Water

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The tremendous increase in human population and rapid decline in freshwater resources have necessitated the development of innovative and sustainable wastewater treatment methods. Africa as a developing continent is currently backing on sustainable solutions to tackle impending water resource crisis brought forward by wastewater‐induced environmental pollution and climate change. Microalgae‐based wastewater treatment systems represent an emerging technology that is capable of meeting the new demand for improved wastewater treatment and climate change mitigation strategies in an environmentally friendly manner. This review critically looks at the opportunities of Africa in harnessing and exploiting the potential of microalgae for the treatment of various wastewaters based on their capacity to recycle nutrients and for concurrent production of valuable biomass and several useful metabolites. Wastewaters, if improperly/completely untreated and discharged, simultaneously pollute freshwater sources and present significant health and environmental risks. Nutrients in wastewater can be utilized and recovered in the form of marketable biomass and products when integrated with the cultivation of microalgae. Several valuable bioproducts can be generated from wastewater‐grown microalgal biomass including biofuels, biofertilizers, animal feed, and various bioactive compounds. This biorefinery approach would most certainly improve wastewater treatment process economics, enhancing the technical feasibility of algae‐based wastewater remediation in African countries.

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“…Microalgae represent an auspicious renewable alternative third-generation sustainable bioenergy source. It can efficiently produce huge amounts of biomass (7-20 times greater than soy or corn per land unit) with high lipid content (Maity et al, 2014;Bharathiraja et al, 2015;Lyon et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Cultivation of Oleaginous Microalgae Scenedesmus obliquus on Secondary Treated Municipal Wastewater as Growth Medium for Biodiesel Production

Eida¹,

Darwesh²,

Matter³

2018

J. Ecol. Eng.

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Local single cell microalgae isolated from a wastewater swamp and identified as Scenedesmus obliquus was used to determine its applicability for utilization of domestic wastewater for biomass and lipid production. Secondary treated domestic wastewater with or without mixing of growth medium was used to cultivate S. obliquus for the biomass and lipid production as a renewable feedstock for biodiesel. S. obliquus showed the highest OD when grown in 100% Bold's basal medium (BBM). S. obliquus utilized 95.2% and 78.5% of P and N contents, respectively, when grown in 25% WW+75% BBM mixture and the utilization efficiency of both elements decreased with the increasing wastewater portion in the mixture. Although the BBM displayed the highest dry biomass and lipid production (25.15% of the cell dry biomass). The lowest values were recorded for the uninoculated wastewater, followed by 100% wastewater enriched with S. obliquus. The obtained data revealed that the lipid classes of S. obliquus differs according to the cultivation medium and conditions. The highest percentage of C16-C18 fatty acids (54.76% from total lipids) were recorded in case of algae cultivated in 100% wastewater, followed by 46.96% in case of 100% BBM medium. These results suggest the utilization of mixtures containing a higher portion of secondary treated wastewater, such as 75% WW+25% BBM or 50% WW+50% BBM, could increase the economical production of the lipid-rich microalgae S. obliquus for biodiesel through saving water and nutrients.

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Algae-Based Wastewater Treatment for Biofuel Production: Processes, Species, and Extraction Methods

Cited by 13 publications

References 69 publications

Potential use of algae for heavy metal bioremediation, a critical review

Potential use of algae for heavy metal bioremediation, a critical review

Algal Cultivation for Treating Wastewater in African Developing Countries: A Review

Cultivation of Oleaginous Microalgae Scenedesmus obliquus on Secondary Treated Municipal Wastewater as Growth Medium for Biodiesel Production

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