Investigation of Biobutanol Efficiency of Chlorella sp. Cultivated in Municipal Wastewater

Onay, Melih

doi:10.4236/gep.2018.610003

Cited by 11 publications

(3 citation statements)

References 25 publications

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“…The highest biobutanol production by ABE fermentation using the resulting biomass of Chlorella sp. DEE006 was 6.23 g L −1 [137]. Wang et al [133] used the carbohydrate-rich microalga Neochloris aquatica CL-M1 as a feedstock for butanol fermentation.…”

Section: Biobutanolmentioning

confidence: 99%

Cultivation and Biorefinery of Microalgae (Chlorella sp.) for Producing Biofuels and Other Byproducts: A Review

et al. 2021

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Microalgae-based carbon dioxide (CO2) biofixation and biorefinery are the most efficient methods of biological CO2 reduction and reutilization. The diversification and high-value byproducts of microalgal biomass, known as microalgae-based biorefinery, are considered the most promising platforms for the sustainable development of energy and the environment, in addition to the improvement and integration of microalgal cultivation, scale-up, harvest, and extraction technologies. In this review, the factors influencing CO2 biofixation by microalgae, including microalgal strains, flue gas, wastewater, light, pH, temperature, and microalgae cultivation systems are summarized. Moreover, the biorefinery of Chlorella biomass for producing biofuels and its byproducts, such as fine chemicals, feed additives, and high-value products, are also discussed. The technical and economic assessments (TEAs) and life cycle assessments (LCAs) are introduced to evaluate the sustainability of microalgae CO2 fixation technology. This review provides detailed insights on the adjusted factors of microalgal cultivation to establish sustainable biological CO2 fixation technology, and the diversified applications of microalgal biomass in biorefinery. The economic and environmental sustainability, and the limitations and needs of microalgal CO2 fixation, are discussed. Finally, future research directions are provided for CO2 reduction by microalgae.

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Section: Biobutanolmentioning

confidence: 99%

Cultivation and Biorefinery of Microalgae (Chlorella sp.) for Producing Biofuels and Other Byproducts: A Review

et al. 2021

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“…Fermented microalgae were used for bio-butanol production. Bio-butanol concentrations were calculated according to Maiti method [33,34].…”

Section: Fermentation Of Borodinellopsis Texensis Ccala 892 and Bio-bmentioning

confidence: 99%

Biomass and Bio-butanol Production from Borodinellopsis texensis CCALA 892 in Synthetic Wastewater: Determination of Biochemical Composition

Onay

2020

Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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Microalgae can generally maintain the high amounts of biomass in the wastewater and they can be converted from biomass to bio-butanol. Bio-butanol is a liquid biofuel and it has significant physical and chemical properties. In this study, we carried out bio-butanol production from Borodinellopsis texensis CCALA 892 grown in various concentrations of the municipal wastewater. Also, we determined biochemical composition ratios of microalgae samples and studied the some antioxidant enzymes such as catalase, superoxide dismutase and ascorbate peroxidase. In the current study, bio-butanol was produced by the acetonebutanol-ethanol (ABE) fermentation method. The microalgae sample grown in 25% of wastewater had the highest biomass productivity among five wastewater samples with 0.114 ± 0.002 g L-1 d-1. The carbohydrate and protein concentrations of control group increased day by day and their values reached stationary phases at seven days. The sample grown in 25% of wastewater had the highest carbohydrate concentration with 0.30 g L-1 and protein concentration with 0.35 g L-1 at the stationary phase. The maximum enzyme activities for catalase, superoxide dismutase and ascorbate peroxidase were 15.33 ± 0.88, 8.67 ± 0.67 and 33 ± 1.53 µmole/mg, respectively at 25% of wastewater. In addition, bio-butanol content of B. texensis CCALA 892 was 3.63 ± 0.21 g L-1 and its bio-butanol yield was found as 0.18 ± 0.011 g/g sugar. In the next study, we can examine large scale butanol production.

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“…However, integration of two-phase AD with microalgae growing or cultivation using a photobioreactor for nutrient recovery and biomass production remains rare (Onay 2018 ), and most of the studies used synthetic wastewater or microalgae growing media such as Bold’s Basal Medium (BBM) in flasks (J. Miranda et al 2012 ; Mamo and Mekonnen 2020 ). But little has been done using partially treated agro-processing industry effluent for nutrient and organic matter removal as well as bioethanol and biodiesel production using Scenedesmus sp.…”

Section: Introductionmentioning

confidence: 99%

Microalgae and co-culture for polishing pollutants of anaerobically treated agro-processing industry wastewater: the case of slaughterhouse

Bedane,

Asfaw

2023

Bioresour. Bioprocess.

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Anaerobically treated slaughterhouse effluent is rich in nutrients, organic matter, and cause eutrophication if discharged to the environment without proper further treatment. Moreover, phosphorus and nitrogen in agro-processing industry wastewaters are mainly removed in the tertiary treatment phase. The objective of this study is to evaluate the pollutant removal efficiency of Chlorella and Scenedesmus species as well as their co-culture treating two-phase anaerobic digester effluent through microalgae biomass production. The dimensions of the rectangular photobioreactor used to conduct the experiment are 15 cm in height, 20 cm in width, and 30 cm in length. Removal efficiencies between 86.74–93.11%, 96.74–97.47%, 91.49–92.91%, 97.94–99.46%, 89.22–94.28%, and 91.08–95.31% were attained for chemical oxygen demand, total nitrogen, nitrate, ammonium, total phosphorous, and orthophosphate by Chlorella species, Scenedesmus species, and their co-culture, respectively. The average biomass productivity and biomass yield of Chlorella species, Scenedesmus species, and their co-culture were 1.4 ± 0.1, 1.17 ± 0.12, 1.5 ± 0.13 g/L, and 0.18, 0.21, and 0.23 g/L*day, respectively. The final effluent quality in terms of chemical oxygen demand, total nitrogen, and total phosphorous attained by Chlorella species and the co-culture were below the permissible discharge limit for slaughterhouse effluent standards in the country (Ethiopia). The results of the study showed that the use of microalgae as well as their co-culture for polishing the nutrients and residual organic matter in the anaerobically treated agro-processing industry effluent offers a promising result for wastewater remediation and biomass production. In general, Chlorella and Scenedesmus species microalgae and their co-culture can be applied as an alternative for nutrient removal from anaerobically treated slaughterhouse wastewater as well as biomass production that can be used for bioenergy. Graphical Abstract

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Investigation of Biobutanol Efficiency of Chlorella sp. Cultivated in Municipal Wastewater

Cited by 11 publications

References 25 publications

Cultivation and Biorefinery of Microalgae (Chlorella sp.) for Producing Biofuels and Other Byproducts: A Review

Cultivation and Biorefinery of Microalgae (Chlorella sp.) for Producing Biofuels and Other Byproducts: A Review

Biomass and Bio-butanol Production from Borodinellopsis texensis CCALA 892 in Synthetic Wastewater: Determination of Biochemical Composition

Microalgae and co-culture for polishing pollutants of anaerobically treated agro-processing industry wastewater: the case of slaughterhouse

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