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Ferreira JT, Amaral FM, Brasileiro-Vidal AC, Bezerra RP, Bezerra ASC, Motteran F, Kato MT, Florencio L, Menezes O, Gavazza S. Evaluating the removal of the tetra-azo dye direct black-22 in Chlorella vulgaris closed-cultivation systems. ENVIRONMENTAL TECHNOLOGY 2024:1-9. [PMID: 39324732 DOI: 10.1080/09593330.2024.2406989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Accepted: 09/04/2024] [Indexed: 09/27/2024]
Abstract
The removal of the tetra-azo dye Direct Black 22 (DB22) using the microalga Chlorella vulgaris was evaluated in the present study, aiming to understand the contribution of different processes (biodegradation, photodegradation, and adsorption) in the removal of this contaminant. The growth and morphological characteristics of C. vulgaris were not affected by the presence of the dye in the reaction medium. The efficiency of dye removal was 62.6 ± 1.46%, 47.7 ± 7.2% of which was attributed to photodegradation, while 13.2 ± 6.5% were associated with the contribution of the microalga by an enzymatic route and 1.7 ± 9.6% with an adsorption process. Additionally, tests with the organism Allium cepa as a bioindicator revealed that DB22 and its byproducts did not induce toxicity, but cytotoxicity and genotoxicity were induced. We observed that genotoxicity was reduced after the remediation process. Our results establish photodegradation as the primary mechanism and biodegradation as the secondary mechanism driving the removal of DB22 within a Chlorella culture. Researchers must carefully consider all aspects involved in the removal process, including photodegradation, biodegradation, and adsorption processes.
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Affiliation(s)
- Jucélia T Ferreira
- Laboratory of Environmental Sanitation, Department of Civil and Environmental Engineering, Federal University of Pernambuco, Cidade Universitária, Recife, Brazil
| | - Fernanda M Amaral
- Laboratory of Environmental Sanitation, Department of Civil and Environmental Engineering, Federal University of Pernambuco, Cidade Universitária, Recife, Brazil
| | | | - Raquel P Bezerra
- Department of Morphology and Animal Physiology, Rural Federal University of Pernambuco, Recife, Brazil
| | - Albean S C Bezerra
- Department of Genetics, Federal University of Pernambuco, Cidade Universitária, Recife, Brazil
| | - Fabricio Motteran
- Laboratory of Environmental Sanitation, Department of Civil and Environmental Engineering, Federal University of Pernambuco, Cidade Universitária, Recife, Brazil
| | - Mário T Kato
- Laboratory of Environmental Sanitation, Department of Civil and Environmental Engineering, Federal University of Pernambuco, Cidade Universitária, Recife, Brazil
| | - Lourdinha Florencio
- Laboratory of Environmental Sanitation, Department of Civil and Environmental Engineering, Federal University of Pernambuco, Cidade Universitária, Recife, Brazil
| | - Osmar Menezes
- Laboratory of Environmental Sanitation, Department of Civil and Environmental Engineering, Federal University of Pernambuco, Cidade Universitária, Recife, Brazil
| | - Sávia Gavazza
- Laboratory of Environmental Sanitation, Department of Civil and Environmental Engineering, Federal University of Pernambuco, Cidade Universitária, Recife, Brazil
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Goswami D, Mukherjee J, Mondal C, Bhunia B. Bioremediation of azo dye: A review on strategies, toxicity assessment, mechanisms, bottlenecks and prospects. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 954:176426. [PMID: 39326754 DOI: 10.1016/j.scitotenv.2024.176426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 09/16/2024] [Accepted: 09/18/2024] [Indexed: 09/28/2024]
Abstract
The synthetic azo dyes are widely used in the textile industries for their excellent dyeing properties. They may be classified into many classes based on their structure and application, including direct, reactive, dispersive, acidic, basic, and others. The continuous discharge of wastewater from a large number of textile industries without prior treatment poses detrimental effects on the environment and human health. Azo dyes and their degradation products are extremely poisonous for their carcinogenic, teratogenic and mutagenic nature. Moreover, exposure to synthetic azo dyes can cause genetic changes, skin inflammation, hypersensitivity responses, and skin irritations in persons, which may ultimately result in other profound issues including the deterioration of water quality. This review discusses these dyes in details along with their detrimental effects on aquatic and terrestrial flora and fauna including human beings. Azo dyes degrade the water bodies by increasing biochemical and chemical oxygen demand. Therefore, dye-containing wastewater should be effectively treated using eco-friendly and cost-effective technologies to avoid negative impact on the environment. This article extensively reviews on physical, chemical and biological treatment with their benefits and challenges. Biological-based treatment with higher hydraulic retention time (HRT) is economical, consumes less energy, produces less sludge and environmentally friendly. Whereas the physical and chemical methods with less hydraulic retention time is costly, produces large sludge, requires high dissolved oxygen and ecologically inefficient. Since, biological treatment is more advantageous over physical and chemical methods, researchers are concentrating on bioremediation for eliminating harmful azo dye pollutants from nature. This article provides a thorough analysis of the state-of-the-art biological treatment technologies with their developments and effectiveness in the removal of azo dyes. The mechanism by which genes encoding azoreductase enzymes (azoG, and azoK) enable the natural degradation of azo dyes by bacteria and convert them into less harmful compounds is also extensively examined. Therefore, this review also focuses on the use of genetically modified microorganisms and nano-technological approaches for bioremediation of azo dyes.
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Affiliation(s)
- Deepa Goswami
- Department of Chemical Engineering, Jadavpur University, Kolkata 700032, India
| | - Jayanti Mukherjee
- Department of Pharmaceutical Chemistry, CMR College of Pharmacy, Affiliated to Jawaharlal Nehru Technological University Hyderabad, Hyderabad, Telangana 501401, India
| | - Chanchal Mondal
- Department of Chemical Engineering, Jadavpur University, Kolkata 700032, India
| | - Biswanath Bhunia
- Bioproducts Processing Research Laboratory (BPRL), Department of Bio Engineering, National Institute of Technology, Agartala 799046, India.
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Selvaraj D, Arivazhagan M. Synergistic effects of Spirulina platensis cultivation in textile wastewater towards nutrient removal and seed germination study. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 357:124435. [PMID: 38925215 DOI: 10.1016/j.envpol.2024.124435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 05/28/2024] [Accepted: 06/23/2024] [Indexed: 06/28/2024]
Abstract
Recent escalating concerns surrounding textile wastewater pollution and the urgent need for sustainable treatment solutions to mitigate its environmental impact. This study investigates the multifaceted effects of Spirulina platensis (SP) cultivation in textile wastewater from two different sources (TWW1 and TWW2), focusing on growth kinetics, Chemical Oxygen Demand (COD), and nutrient removal percentage, and seed germination enhancement. Results showed that SP exhibited comparable growth performance in TWW1 and TWW2 to the control, indicating its potential for sustainable wastewater treatment. Moreover, maximum COD removal percentages were achieved, reaching 62.59 ± 1.88 % for TWW1 and 46.68 ± 1.40 % for TWW2 on day 5. The COD removal process aligns best with the first-order kinetic model. Nutrient removal rates showed decreasing trends over time, with maximum phosphate removal percentages of 36.42 ± 0.73 % for TWW1 and 62.18 ± 1.24 % for TWW2, and maximum ammonia removal percentages of 59.34 ± 1.18 % for TWW1 and 69.31 ± 1.39 % for TWW2. FTIR analysis confirmed pollutant removal-induced changes in algal biomass functional groups. Seed germination studies indicated enhanced shoot and root development of vigna radiatas using treated TWW1 and TWW2 compared to the control, suggesting potential applications for irrigation. An increase in the lipid & carbohydrate content post-treatment was observed and it would be suitable for biofuel production. This comprehensive assessment demonstrates the synergistic benefits of phycoremediation in simultaneously removing pollutants, promoting plant growth, and enhancing wastewater treatment efficiency, underscoring its potential for sustainable water management practices.
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Affiliation(s)
- Durgadevi Selvaraj
- Environmental Biotechnology Laboratory, Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, 620015, Tamil Nadu, India
| | - M Arivazhagan
- Environmental Biotechnology Laboratory, Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, 620015, Tamil Nadu, India.
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Zulekha R, Mubashar M, Muzamil Sultan M, Wang Z, Li J, Zhang X. An assessment of the autotrophic/heterotrophic synergism in microalgae under mixotrophic mode and its contribution in high-rate phosphate recovery from wastewater. BIORESOURCE TECHNOLOGY 2024; 413:131450. [PMID: 39265752 DOI: 10.1016/j.biortech.2024.131450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 08/01/2024] [Accepted: 09/04/2024] [Indexed: 09/14/2024]
Abstract
Dual carbon metabolisms and the synergism contribute to improving nutrient recovery under mixotrophy. However, how synergism influences nutrient recovery has yet to be understood, which is revealed in the current study. Due to dual carbon metabolisms and synergism,the PO4--P recovery rate under mixotrophy reached 0.34 mg L-1 h-1. Due to the internal cycling of respiratory CO2, the mutualistic index (MI) in terms of synergism helped Scenedesmus accumulate 27.49 % more biomass under mixotrophy than sum of the two controls. In contrast, MI contributed 0.26 g L-1 d-1 to the total modeled mixotrophic productivity of 1.15 g L-1 d-1. To total modeled PO4--P recovery, mixotrophic-auto, and mixotrophic-hetero shares were 42 % and 58 %. The synergism under mixotrophy contributed 20 % in total PO4--P recovery. The PO4--P recovery rate under mixotrophywas comparable to other biological P removal methods. These findings emphasize the potential of synergism in improving productivityand promoting resource recovery for sustainable wastewater treatment.
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Affiliation(s)
- Rabail Zulekha
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Muhammad Mubashar
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Muhammad Muzamil Sultan
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zimin Wang
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Li
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Xuezhi Zhang
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
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Arias DM, Olvera Vargas P, Vidal Sánchez AN, Olvera-Vargas H. Integrating electro-Fenton and microalgae for the sustainable management of real food processing wastewater. CHEMOSPHERE 2024; 360:142372. [PMID: 38768783 DOI: 10.1016/j.chemosphere.2024.142372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 04/24/2024] [Accepted: 05/16/2024] [Indexed: 05/22/2024]
Abstract
The present study demonstrates, for the first time, the feasibility of a two-step process consisting of Electro-Fenton (EF) followed by microalgae to treat highly loaded real food processing wastewater along with resource recovery. In the first step, EF with a carbon felt cathode and Ti/RuO2-IrO2 anode was applied at different current densities (3.16 mA cm-2, 4.74 mA cm-2 and 6.32 mA cm-2) to decrease the amount of organic matter and turbidity and enhance biodegradability. In the second step, the EF effluents were submitted to microalgal treatment for 15 days using a mixed culture dominated by Scenedesmus sp., Chlorosarcinopsis sp., and Coelastrum sp. Results showed that current density impacted the amount of COD removed by EF, achieving the highest COD removal of 77.5% at 6.32 mA cm-2 with >95% and 74.3% of TSS and PO43- removal, respectively. With respect to microalgae, the highest COD removal of 85% was obtained by the culture in the EF effluent treated at 6.32 mA cm-2. Remarkably, not only 85% of the remaining organic matter was removed by microalgae, but also the totality of inorganic N and P compounds, as well as 65% of the Fe catalyst that was left after EF. The removal of inorganic species also demonstrates the high complementarity of both processes, since EF does not have the capacity to remove such compounds, while microalgae do not grow in the raw wastewater. Furthermore, a maximum of 0.8 g L-1 of biomass was produced after cultivation, with an accumulation of 32.2% of carbohydrates and 25.9% of lipids. The implementation of the two processes represents a promising sustainable approach for the management of industrial effluents, incorporating EF in a water and nutrient recycling system to produce biomass that could be valorized into clean fuels.
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Affiliation(s)
- Dulce María Arias
- Instituto de Energías Renovables, Universidad Nacional Autónoma de México (IER-UNAM), Priv. Xochicalco S/N, Col. Centro, Temixco, Morelos, 62580, Mexico
| | - Patricia Olvera Vargas
- Instituto de Energías Renovables, Universidad Nacional Autónoma de México (IER-UNAM), Priv. Xochicalco S/N, Col. Centro, Temixco, Morelos, 62580, Mexico
| | - Andrea Noemí Vidal Sánchez
- Instituto de Energías Renovables, Universidad Nacional Autónoma de México (IER-UNAM), Priv. Xochicalco S/N, Col. Centro, Temixco, Morelos, 62580, Mexico
| | - Hugo Olvera-Vargas
- Instituto de Energías Renovables, Universidad Nacional Autónoma de México (IER-UNAM), Priv. Xochicalco S/N, Col. Centro, Temixco, Morelos, 62580, Mexico.
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Mustafa G, Zahid MT, Kurade MB, Alvi A, Ullah F, Yadav N, Park HK, Khan MA, Jeon BH. Microalgal and activated sludge processing for biodegradation of textile dyes. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 349:123902. [PMID: 38580061 DOI: 10.1016/j.envpol.2024.123902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 03/25/2024] [Accepted: 03/28/2024] [Indexed: 04/07/2024]
Abstract
The textile industry contributes substantially to water pollution. To investigate bioremediation of dye-containing wastewater, the decolorization and biotransformation of three textile azo dyes, Red HE8B, Reactive Green 27, and Acid Blue 29, were considered using an integrated remediation approach involving the microalga Chlamydomonas mexicana and activated sludge (ACS). At a 5 mg L-1 dye concentration, using C. mexicana and ACS alone, decolorization percentages of 39%-64% and 52%-54%, respectively, were obtained. In comparison, decolorization percentages of 75%-79% were obtained using a consortium of C. mexicana and ACS. The same trend was observed for the decolorization of dyes at higher concentrations, but the potential for decolorization was low. The toxic azo dyes adversely affect the growth of microalgae and at high concentration 50 mg L-1 the growth rate inhibited to 50-60% as compared to the control. The natural textile wastewater was also treated with the same pattern and got promising results of decolorization (90%). Moreover, the removal of BOD (82%), COD (72%), TN (64%), and TP (63%) was observed with the consortium. The HPLC and GC-MS confirm dye biotransformation, revealing the emergence of new peaks and the generation of multiple metabolites with more superficial structures, such as N-hydroxy-aniline, naphthalene-1-ol, and sodium hydroxy naphthalene. This analysis demonstrates the potential of the C. mexicana and ACS consortium for efficient, eco-friendly bioremediation of textile azo dyes.
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Affiliation(s)
- Ghulam Mustafa
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, South Korea
| | - Muhammad Tariq Zahid
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, South Korea; Department of Zoology, Government College University Lahore, Lahore, 54000, Pakistan
| | - Mayur Bharat Kurade
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, South Korea
| | - Aliya Alvi
- Department of Chemistry, Lahore College for Women University, Lahore, 54000, Pakistan
| | - Faheem Ullah
- Department of Zoology, Government College University Lahore, Lahore, 54000, Pakistan
| | - Nikita Yadav
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, South Korea
| | - Hyun-Kyung Park
- Department of Pediatrics, Hanyang University College of Medicine, Seoul, 04763, Republic of Korea
| | - Moonis Ali Khan
- Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, South Korea.
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Al-Hammadi M, Güngörmüşler M. New insights into Chlorella vulgaris applications. Biotechnol Bioeng 2024; 121:1486-1502. [PMID: 38343183 DOI: 10.1002/bit.28666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 12/18/2023] [Accepted: 01/18/2024] [Indexed: 04/14/2024]
Abstract
Environmental pollution is a big challenge that has been faced by humans in contemporary life. In this context, fossil fuel, cement production, and plastic waste pose a direct threat to the environment and biodiversity. One of the prominent solutions is the use of renewable sources, and different organisms to valorize wastes into green energy and bioplastics such as polylactic acid. Chlorella vulgaris, a microalgae, is a promising candidate to resolve these issues due to its ease of cultivation, fast growth, carbon dioxide uptake, and oxygen production during its growth on wastewater along with biofuels, and other productions. Thus, in this article, we focused on the potential of Chlorella vulgaris to be used in wastewater treatment, biohydrogen, biocement, biopolymer, food additives, and preservation, biodiesel which is seen to be the most promising for industrial scale, and related biorefineries with the most recent applications with a brief review of Chlorella and polylactic acid market size to realize the technical/nontechnical reasons behind the cost and obstacles that hinder the industrial production for the mentioned applications. We believe that our findings are important for those who are interested in scientific/financial research about microalgae.
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Affiliation(s)
- Mohammed Al-Hammadi
- Division of Bioengineering, Graduate School, Izmir University of Economics, Izmir, Türkiye
| | - Mine Güngörmüşler
- Department of Genetics and Bioengineering, Faculty of Engineering, Izmir University of Economics, Izmir, Türkiye
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Li Y, Zhou C, Chen L, Deng R, Wong M, Shan S. Effects of biochar on the manganese enrichment and oxidation by a microalga Scenedesmus quadricauda in the aquatic environment. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 271:115961. [PMID: 38218106 DOI: 10.1016/j.ecoenv.2024.115961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 10/25/2023] [Accepted: 01/06/2024] [Indexed: 01/15/2024]
Abstract
Microalgae play a significant impact in the biogeochemical cycle of Mn(II) in the aquatic ecosystem. Meanwhile, the inflow of biochar into the water bodies is bound to impact the aquatic organisms. However, the influence of biochar on the manganese transformation in algae-rich water has not drawn much attention. Thus, we studied the effects of rice straw biochar on manganese enrichment and oxidation by a common type of algae in freshwater (Scenedesmus quadricauda). The results showed that Mn(II) was absorbed intracellularly and adsorbed extracellularly by active algal cells. A significant portion of enriched Mn(II) was oxidized to amorphous precipitates MnO2, MnOOH, and Mn2O3. Moreover, the extracellular bound Mn(II) content in the coexistent system of algae and biochar increased compared with the pure Scenedesmus quadricauda system. Nevertheless, the intracellular Mn content was continually lowered as the biochar dose rose from an initial 0.2 to 2.0 g·L-1, suggesting that Mn assimilation of the cell was suppressed. It was calculated that the total enrichment ability of Scenedesmus quadricauda in the algae-biochar coexistent system was 0.31- 15.32 mg Mn/g biomass, more than that in the pure algae system. More importantly, with biochar in the algae system, the amount of generated MnOx increased, and more Mn(II) was oxidized into highly-charged Mn(IV). This was probably because the biochar could relieve the stress of massive Mn(II) on algae and support the MnOx precipitates. In brief, moderate biochar promoted the Mn(II) accumulation by algal cells and its oxidation activity. This study offers deeper insight into the bioconversion of Mn(II) by algae and the potential impact of biochar application to the aquatic system.
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Affiliation(s)
- Yongchao Li
- Key Laboratory of Recycling and Eco-Treatment of Waste Biomass of Zhejiang Province, School of Environmental and Natural Resources, Zhejiang University of Science and Technology, Hangzhou 310023, PR China; School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, PR China.
| | - Chuanfeng Zhou
- Key Laboratory of Recycling and Eco-Treatment of Waste Biomass of Zhejiang Province, School of Environmental and Natural Resources, Zhejiang University of Science and Technology, Hangzhou 310023, PR China
| | - Liping Chen
- School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, PR China
| | - Renjian Deng
- School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, PR China
| | - Minghung Wong
- Key Laboratory of Recycling and Eco-Treatment of Waste Biomass of Zhejiang Province, School of Environmental and Natural Resources, Zhejiang University of Science and Technology, Hangzhou 310023, PR China; Consortium on Health, Environment, Education, and Research (CHEER), Department of Science and Environmental Studies, The Education University of Hong Kong, 10 Lo Ping Road, Tai Po, Hong Kong SAR, PR China
| | - Shengdao Shan
- Key Laboratory of Recycling and Eco-Treatment of Waste Biomass of Zhejiang Province, School of Environmental and Natural Resources, Zhejiang University of Science and Technology, Hangzhou 310023, PR China
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Pandey A, Kant G, Chaudhary A, Amesho KTT, Reddy K, Bux F. Axenic green microalgae for the treatment of textile effluent and the production of biofuel: a promising sustainable approach. World J Microbiol Biotechnol 2024; 40:81. [PMID: 38285224 PMCID: PMC10824862 DOI: 10.1007/s11274-023-03863-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 11/30/2023] [Indexed: 01/30/2024]
Abstract
An integrated approach to nutrient recycling utilizing microalgae could provide feasible solutions for both environmental control and energy production. In this study, an axenic microalgae strain, Chlorella sorokiniana ASK25 was evaluated for its potential as a biofuel feedstock and textile wastewater (TWW) treatment. The microalgae isolate was grown on TWW supplemented with different proportions of standard BG-11 medium varying from 0 to 100% (v/v). The results showed that TWW supplemented with 20% (v/v) BG11 medium demonstrated promising results in terms of Chlorella sorokiniana ASK25 biomass (3.80 g L-1), lipid production (1.24 g L-1), nutrients (N/P, > 99%) and pollutant removal (chemical oxygen demand (COD), 99.05%). The COD level dropped by 90% after 4 days of cultivation, from 2,593.33 mg L-1 to 215 mg L-1; however, after day 6, the nitrogen (-NO3-1) and total phosphorus (TP) levels were reduced by more than 95%. The biomass-, total lipid- and carbohydrate- production, after 6 days of cultivation were 3.80 g L-1, 1.24 g L-1, and 1.09 g L-1, respectively, which were 2.15-, 2.95- and 3.30-fold higher than Chlorella sorokiniana ASK25 grown in standard BG-11 medium (control). In addition, as per the theoretical mass balances, 1 tonne biomass of Chlorella sorokiniana ASK25 might yield 294.5 kg of biodiesel and 135.7 kg of bioethanol. Palmitic acid, stearic acid, and oleic acid were the dominant fatty acids found in the Chlorella sorokiniana ASK25 lipid. This study illustrates the potential use of TWW as a microalgae feedstock with reduced nutrient supplementation (20% of TWW). Thus, it can be considered a promising feedstock for economical biofuel production.
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Affiliation(s)
- Ashutosh Pandey
- Institute for Water and Wastewater Technology, Durban University of Technology, 19 Steve Biko Road, Durban, 4000, South Africa
- BiotechnologyBioenergy Research Laboratory, Department of Biotechnology, AKS University Satna, Satna, MP, 485001, India
| | - Gaurav Kant
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, UP, 211004, India
| | - Ashvani Chaudhary
- Department of Biotechnology, University)IMS Engineering College (Affiliated to Dr. APJ Abdul Kalam Technical University, Lucknow), Lucknow, Ghaziabad, UP, 201015, India
- Amity Institute of Biotechnology, Amity University Noida Campus, Sec-125, Noida, 201313, UP, India
| | - Kaissan T T Amesho
- Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan
- Centre for Emerging Contaminants Research, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan
- Centre for Environmental Studies, The International University of Management, Main Campus, Dorado Park Ext 1, Windhoek, 10001, Namibia
| | - Karen Reddy
- Institute for Water and Wastewater Technology, Durban University of Technology, 19 Steve Biko Road, Durban, 4000, South Africa
| | - Faizal Bux
- Institute for Water and Wastewater Technology, Durban University of Technology, 19 Steve Biko Road, Durban, 4000, South Africa.
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Wang Y, Yang S, Liu J, Wang J, Xiao M, Liang Q, Ren X, Wang Y, Mou H, Sun H. Realization process of microalgal biorefinery: The optional approach toward carbon net-zero emission. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 901:165546. [PMID: 37454852 DOI: 10.1016/j.scitotenv.2023.165546] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/12/2023] [Accepted: 07/12/2023] [Indexed: 07/18/2023]
Abstract
Increasing carbon dioxide (CO2) emission has already become a dire threat to the human race and Earth's ecology. Microalgae are recommended to be engineered as CO2 fixers in biorefinery, which play crucial roles in responding climate change and accelerating the transition to a sustainable future. This review sorted through each segment of microalgal biorefinery to explore the potential for its practical implementation and commercialization, offering valuable insights into research trends and identifies challenges that needed to be addressed in the development process. Firstly, the known mechanisms of microalgal photosynthetic CO2 fixation and the approaches for strain improvement were summarized. The significance of process regulation for strengthening fixation efficiency and augmenting competitiveness was emphasized, with a specific focus on CO2 and light optimization strategies. Thereafter, the massive potential of microalgal refineries for various bioresource production was discussed in detail, and the integration with contaminant reclamation was mentioned for economic and ecological benefits. Subsequently, economic and environmental impacts of microalgal biorefinery were evaluated via life cycle assessment (LCA) and techno-economic analysis (TEA) to lit up commercial feasibility. Finally, the current obstacles and future perspectives were discussed objectively to offer an impartial reference for future researchers and investors.
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Affiliation(s)
- Yuxin Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Shufang Yang
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China
| | - Jin Liu
- Laboratory for Algae Biotechnology and Innovation, College of Engineering, Peking University, Beijing 100871, China
| | - Jia Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Mengshi Xiao
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Qingping Liang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Xinmiao Ren
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Ying Wang
- Marine Science research Institute of Shandong Province, Qingdao 266003, China.
| | - Haijin Mou
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China.
| | - Han Sun
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China.
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11
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Kashyap M, Chakraborty S, Kumari A, Rai A, Varjani S, Vinayak V. Strategies and challenges to enhance commercial viability of algal biorefineries for biofuel production. BIORESOURCE TECHNOLOGY 2023; 387:129551. [PMID: 37506948 DOI: 10.1016/j.biortech.2023.129551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 07/20/2023] [Accepted: 07/21/2023] [Indexed: 07/30/2023]
Abstract
The rise in energy consumption would quadruple in the coming century and the, existing energy resources might be insufficient to meet the demand of the growing population. An alternative and sustainable energy resource is therefore needed to address the fossil fuel deficiency. The utility of microalgae strains in the aspect of biorefinery has been in research for quite some time. Algal biorefinery is an alternate way of renewable energy however even after decades of research it still suffers from commercialization bottlenecks. The current manuscript reviews the scenarios where the innovation needs an ignition for its commercialization. This review discusses the prospects of up-scale cultivation, and harvesting algal biomass for biorefineries. It narrates algal biorefinery hurdles that can be solved using integrated technology approach, life cycle assessment and applications of nanotechnology. The review also sheds light upon the ties of algal biorefineries with its economic viability.
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Affiliation(s)
- Mrinal Kashyap
- Porter School of Earth and Environment Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Sukanya Chakraborty
- Diatom Nanoengineering and Metabolism Laboratory (DNM), School of Applied Science, Dr. Harisingh Gour Central University, Sagar, MP 470003, India
| | - Anamika Kumari
- Porter School of Earth and Environment Sciences, Tel Aviv University, Tel Aviv 6997801, Israel; Diatom Nanoengineering and Metabolism Laboratory (DNM), School of Applied Science, Dr. Harisingh Gour Central University, Sagar, MP 470003, India
| | - Anshuman Rai
- Department of Biotechnology, School of Engineering, Maharishi Markandeshwar University, Ambala, Haryana 133203, India; State Forensic Science Laboratory, Haryana, Madhuban 132037, India
| | - Sunita Varjani
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon 999077, Hong Kong; Sustainability Cluster, School of Engineering, University of Petroleum and Energy Studies, Dehradun 248 007, Uttarakhand, India
| | - Vandana Vinayak
- Diatom Nanoengineering and Metabolism Laboratory (DNM), School of Applied Science, Dr. Harisingh Gour Central University, Sagar, MP 470003, India.
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12
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Tarbajova V, Kolackova M, Chaloupsky P, Dobesova M, Capal P, Pilat Z, Samek O, Zemanek P, Svec P, Sterbova DS, Vaculovicova M, Richtera L, Pérez-de-Mora A, Adam V, Huska D. Physiological and transcriptome profiling of Chlorella sorokiniana: A study on azo dye wastewater decolorization. JOURNAL OF HAZARDOUS MATERIALS 2023; 460:132450. [PMID: 37708651 DOI: 10.1016/j.jhazmat.2023.132450] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 08/02/2023] [Accepted: 08/30/2023] [Indexed: 09/16/2023]
Abstract
Over decades, synthetic dyes have become increasingly dominated by azo dyes posing a significant environmental risk due to their toxicity. Microalgae-based systems may offer an alternative for treatment of azo dye effluents to conventional physical-chemical methods. Here, microalgae were tested to decolorize industrial azo dye wastewater (ADW). Chlorella sorokiniana showed the highest decolorization efficiency in a preliminary screening test. Subsequently, the optimization of the experimental design resulted in 70% decolorization in a photobioreactor. Tolerance of this strain was evidenced using multiple approaches (growth and chlorophyll content assays, scanning electron microscopy (SEM), and antioxidant level measurements). Raman microspectroscopy was employed for the quantification of ADW-specific compounds accumulated by the microalgal biomass. Finally, RNA-seq revealed the transcriptome profile of C. sorokiniana exposed to ADW for 72 h. Activated DNA repair and primary metabolism provided sufficient energy for microalgal growth to overcome the adverse toxic conditions. Furthermore, several transporter genes, oxidoreductases-, and glycosyltransferases-encoding genes were upregulated to effectively sequestrate and detoxify the ADW. This work demonstrates the potential utilization of C. sorokiniana as a tolerant strain for industrial wastewater treatment, emphasizing the regulation of its molecular mechanisms to cope with unfavorable growth conditions.
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Affiliation(s)
- Vladimira Tarbajova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic
| | - Martina Kolackova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic
| | - Pavel Chaloupsky
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic
| | - Marketa Dobesova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic
| | - Petr Capal
- Institute of Experimental Botany, Centre of the Region Hana for Biotechnological and Agricultural Research, Slechtitelu 241/27, 783 71 Olomouc, Czech Republic
| | - Zdenek Pilat
- Institute of Scientific Instruments of the Czech Academy of Sciences, v.v.i., Kralovopolska 147, 612 64 Brno, Czech Republic
| | - Ota Samek
- Institute of Scientific Instruments of the Czech Academy of Sciences, v.v.i., Kralovopolska 147, 612 64 Brno, Czech Republic
| | - Pavel Zemanek
- Institute of Scientific Instruments of the Czech Academy of Sciences, v.v.i., Kralovopolska 147, 612 64 Brno, Czech Republic
| | - Pavel Svec
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic
| | - Dagmar Skopalova Sterbova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic
| | - Marketa Vaculovicova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic
| | - Lukas Richtera
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic
| | - Alfredo Pérez-de-Mora
- Department of Soil and Groundwater, TAUW GmbH, Landsbergerstr. 404, 81241 Munich, Germany
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic
| | - Dalibor Huska
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic.
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13
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Marazzi F, Fornaroli R, Clagnan E, Brusetti L, Ficara E, Bellucci M, Mezzanotte V. Wastewater from textile digital printing as a substrate for microalgal growth and valorization. BIORESOURCE TECHNOLOGY 2023; 375:128828. [PMID: 36878375 DOI: 10.1016/j.biortech.2023.128828] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/28/2023] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
This study aims at evaluating an innovative biotechnological process for the concomitant bioremediation and valorization of wastewater from textile digital printing technology based on a microalgae/bacteria consortium. Nutrient and colour removal were assessed in lab-scale batch and continuous experiments and the produced algae/bacteria biomass was characterized for pigment content and biomethane potential. Microbial community analysis provided insight of the complex community structure responsible for the bioremediation action. Specifically, a community dominated by Scenedesmus spp. and xenobiotic and dye degrading bacteria was naturally selected in continuous photobioreactors. Data confirm the ability of the microalgae/bacteria consortium to grow in textile wastewater while reducing the nutrient content and colour. Improvement strategies were eventually identified to foster biomass growth and process performances. The experimental findings pose the basis of the integration of a microalgal-based process into the textile sector in a circular economy perspective.
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Affiliation(s)
- Francesca Marazzi
- Università degli Studi di Milano - Bicocca, Department of Earth and Environmental Sciences (DISAT), P.zza della Scienza 1, 20126 Milano, Italy
| | - Riccardo Fornaroli
- Università degli Studi di Milano - Bicocca, Department of Earth and Environmental Sciences (DISAT), P.zza della Scienza 1, 20126 Milano, Italy
| | - Elisa Clagnan
- Free University of Bolzano, Faculty of Science and Technology, Piazza Università 1, 39100 Bolzano, Italy
| | - Lorenzo Brusetti
- Free University of Bolzano, Faculty of Science and Technology, Piazza Università 1, 39100 Bolzano, Italy
| | - Elena Ficara
- Politecnico di Milano, Department of Civil and Environmental Engineering (DICA), P.zza L. da Vinci 32, 20133 Milano, Italy
| | - Micol Bellucci
- Politecnico di Milano, Department of Civil and Environmental Engineering (DICA), P.zza L. da Vinci 32, 20133 Milano, Italy; Research and Science Department, Italian Space Agency (ASI), Via del Politecnico snc, Rome 00133, Italy.
| | - Valeria Mezzanotte
- Università degli Studi di Milano - Bicocca, Department of Earth and Environmental Sciences (DISAT), P.zza della Scienza 1, 20126 Milano, Italy
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14
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Lai JL, Wang Y, Li ZG, Xi HL, Luo XG. Assessing the ecological risk of tritium and Carbon-14 discharge on cyanobacteria through metabolic profiling. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 323:121279. [PMID: 36791945 DOI: 10.1016/j.envpol.2023.121279] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 02/01/2023] [Accepted: 02/11/2023] [Indexed: 06/18/2023]
Abstract
The ecological risk posed by tritium (T) and carbon-14 (C-14) discharge from nuclear accidents has gained attention. This study evaluated the toxic impact of T and C-14 (at a concentration of 37 kBq/L for 15 days) on the cyanobacteria (Synechococcus elongatus). The results showed that the assimilation efficiency of cyanobacteria was significantly higher for C-14 than T, and the intracellular C-14 activity reached 30.62-40.58 kBq/kg. T and C-14 exposure had no significant effect on cell proliferation but impacted photosynthesis and respiration. T exposure increased the content of Ca, Mg, Na, P, K, and Mn, while C-14 exposure primarily affected trace element absorption in cyanobacteria. 31, 27, and 58 different metabolites (DEMs) were identified under T, C-14, and combined exposure conditions. These DEMs were enriched in the amino acid biosynthesis pathway, and nitrogen assimilation was one of the crucial pathways affected by T and C-14 exposure. The absorption of mineral elements by cyanobacteria was influenced by the variation in metabolites in the ABC transporter pathway caused by T and C-14 exposure. Our findings provide insights into the metabolic response of cyanobacteria to T and C-14 exposure and will help to guide the ecological risk evaluation of nuclear accidents.
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Affiliation(s)
- Jin-Long Lai
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China; School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Yi Wang
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Zhan-Guo Li
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Hai-Ling Xi
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China.
| | - Xue-Gang Luo
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China
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15
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Zheng S, Wu A, Wang H, Chen L, Song J, Zhang H, He M, Wang C, Chen H, Wang Q. Purification efficiency of Pyropia-processing wastewater and microalgal biomass production by the combination of Chlorella sp. C2 cultivated at different culture temperatures and chitosan. BIORESOURCE TECHNOLOGY 2023; 373:128730. [PMID: 36791980 DOI: 10.1016/j.biortech.2023.128730] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 02/06/2023] [Accepted: 02/08/2023] [Indexed: 06/18/2023]
Abstract
To elucidate the impacts of culture temperature on nutrient removal efficiency of Pyropia-processing wastewater (PPW) and microalgal biomass production, Chlorella sp. C2 was employed and cultivated in raw PPW under different temperatures. Results showed that, after incubating for 7 days, higher biomass (0.50 g/L) and total lipids (21.84 %) were attained at 35 °C. The maximal chemical oxygen demand (COD), phycobiliprotein, total nitrogen and total phosphorus removal rates were observed at 30-35 °C and separately reached 62.41 %, 92.61 %, 92.19 % and 98.33 %. Interestingly, COD removal efficiencies of Chlorella cells, cultivated for 3, 5 and 7 days at 30-35 °C, 15-25 °C and 10 °C respectively, could reach >75 % with assistance from 60-80 mg/L chitosan. Meanwhile, the clarification efficiency of chitosan on algal cells reached >95 %. It suggests that Chlorella strain cultured at altered temperatures could efficiently remove PPW nutrients assisted by moderate chitosan, simultaneously achieving the rapid harvest of microalgae.
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Affiliation(s)
- Shiyan Zheng
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China; Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, China; Jiangsu Institute of Marine Resources Development, Jiangsu Ocean University, Lianyungang 222005, China
| | - Aihua Wu
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China
| | - Hongyan Wang
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China
| | - Lei Chen
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China
| | - Jiamei Song
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China
| | - Huai Zhang
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China
| | - Meilin He
- Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Changhai Wang
- Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, China; Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Hui Chen
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Qiang Wang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng 475004, China; Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng 475004, China.
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16
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Fang Y, Liu Y, Zhang J. Mechanisms for the increase in lipid production in cyanobacteria during the degradation of antibiotics. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 322:121171. [PMID: 36736559 DOI: 10.1016/j.envpol.2023.121171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 01/27/2023] [Accepted: 01/28/2023] [Indexed: 06/18/2023]
Abstract
This study evaluated the responses of cell density, photosynthesis activity, dry cell weight, lipid productivity, proteome and metabolome in two non-toxic cyanobacterial species (Synechococcus sp. and Chroococcus sp.) exposed to two frequently detected antibiotics (sulfamethoxazole and ofloxacin) at test concentrations of 0.2-20.0 μg L-1 in a 4-day culture period. Upregulated antioxidant enzymes and oxidoreductases contributed to antibiotic biodegradation in Synechococcus sp.; whereas, upregulated carotenoid protein contributed to antibiotic biodegradation in Chroococcus sp. The 4-day removal efficiencies of sulfamethoxazole and ofloxacin by cyanobacteria were 35.98-66.23% and 33.01-61.92%, respectively. In cyanobacteria, each antibiotic induced hormetic responses, such as increase in cell density, dry cell weight, and photosynthetic activity; upregulation of photosynthesis-related proteins; and elevation of lipid expression by up to 2.05-fold. Under antibiotic stress, the two cyanobacterial species preferred to store energy in the form of lipids rather than ATP, with fructose-bisphosphate aldolase playing an essential role in lipid synthesis. The downregulation of lipid transporters also facilitated lipid accumulation in Synechococcus sp. In general, the two non-toxic cyanobacterial species achieved a good combination of lipid deposition and antibiotic treatment performance, especially in Chroococcus sp. exposed to sulfamethoxazole.
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Affiliation(s)
- Youshuai Fang
- School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Ying Liu
- School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China.
| | - Jian Zhang
- School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
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17
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Pradhan N, Kumar S, Selvasembian R, Rawat S, Gangwar A, Senthamizh R, Yuen YK, Luo L, Ayothiraman S, Saratale GD, Mal J. Emerging trends in the pretreatment of microalgal biomass and recovery of value-added products: A review. BIORESOURCE TECHNOLOGY 2023; 369:128395. [PMID: 36442602 DOI: 10.1016/j.biortech.2022.128395] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/20/2022] [Accepted: 11/22/2022] [Indexed: 06/16/2023]
Abstract
Microalgae are a promising source of raw material (i.e., proteins, carbohydrates, lipids, pigments, and micronutrients) for various value-added products and act as a carbon sink for atmospheric CO2. The rigidity of the microalgal cell wall makes it difficult to extract different cellular components for its applications, including biofuel production, food and feed supplements, and pharmaceuticals. To improve the recovery of products from microalgae, pretreatment strategies such as biological, physical, chemical, and combined methods have been explored to improve whole-cell disruption and product recovery efficiency. However, the diversity and uniqueness of the microalgal cell wall make the pretreatment process more species-specific and limit its large-scale application. Therefore, advancing the currently available technologies is required from an economic, technological, and environmental perspective. Thus, this paper provides a state-of-art review of the current trends, challenges, and prospects of sustainable microalgal pretreatment technologies from a microalgae-based biorefinery concept.
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Affiliation(s)
- Nirakar Pradhan
- Department of Biology, Faculty of Science, Hong Kong Baptist University, Hong Kong SAR, China
| | - Sanjay Kumar
- Biofuel Research Laboratory, School of Biochemical Engineering, IIT(BHU) Varanasi, Varanasi, U.P. 221005 India
| | - Rangabhashiyam Selvasembian
- Department of Biotechnology, School of Chemical & Biotechnology, SASTRA Deemed University, Thanjavur 613401, Tamil Nadu, India
| | - Shweta Rawat
- Biofuel Research Laboratory, School of Biochemical Engineering, IIT(BHU) Varanasi, Varanasi, U.P. 221005 India
| | - Agendra Gangwar
- Biofuel Research Laboratory, School of Biochemical Engineering, IIT(BHU) Varanasi, Varanasi, U.P. 221005 India
| | - R Senthamizh
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, Uttar Pradesh, India
| | - Yuk Kit Yuen
- Department of Biology, Faculty of Science, Hong Kong Baptist University, Hong Kong SAR, China
| | - Lijun Luo
- Department of Biology, Faculty of Science, Hong Kong Baptist University, Hong Kong SAR, China
| | - Seenivasan Ayothiraman
- Department of Biotechnology, National Institute of Technology Andhra Pradesh, Tadepalligudem - 534101, West Godavari Dist, Andhra Prdesh, India
| | - Ganesh Dattatraya Saratale
- Department of Food Science and Biotechnology, Dongguk University, Ilsandong-gu, Goyang-si, Gyeonggido, Seoul 10326, Korea
| | - Joyabrata Mal
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, Uttar Pradesh, India.
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18
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Satya ADM, Cheah WY, Yazdi SK, Cheng YS, Khoo KS, Vo DVN, Bui XD, Vithanage M, Show PL. Progress on microalgae cultivation in wastewater for bioremediation and circular bioeconomy. ENVIRONMENTAL RESEARCH 2023; 218:114948. [PMID: 36455634 DOI: 10.1016/j.envres.2022.114948] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 11/10/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
Water usage increased alongside its competitiveness due to its finite amount. Yet, many industries still rely on this finite resource thus recalling the need to recirculate their water for production. Circular bioeconomy is presently the new approach emphasizing on the 'end-of-life' concept with reusing, recycling, and recovering materials. Microalgae are the ideal source contributing to circular bioeconomy as it exhibits fast growth and adaptability supported by biological rigidity which in turn consumes nutrients, making it an ideal and capable bioremediating agent, therefore allowing water re-use as well as its biomass potential in biorefineries. Nevertheless, there are challenges that still need to be addressed with consideration of recent advances in cultivating microalgae in wastewater. This review aimed to investigate the potential of microalgae biomass cultivated in wastewater. More importantly, how it'll play a role in the circular bioeconomy. This includes an in-depth look at the production of goods coming from wastes tattered by emerging pollutants. These emerging pollutants include microplastics, antibiotics, ever-increasingly sewage water, and heavy metals which have not been comprehensively compared and explored. Therefore, this review is aiming to bring new insights to researchers and industrial stakeholders with interest in green alternatives to eventually contribute towards environmental sustainability.
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Affiliation(s)
- Azalea Dyah Maysarah Satya
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia
| | - Wai Yan Cheah
- Centre of Research in Development, Social and Environment (SEEDS), Faculty of Social Sciences and Humanities, Universiti Kebangsaan Malaysia, 43600, UKM, Bangi, Selangor Darul Ehsan, Malaysia.
| | - Sara Kazemi Yazdi
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia
| | - Yu-Shen Cheng
- College of Future, National Yunlin University of Science and Technology, 123 University Road Section 3, Douliou, 64002, Yunlin, Taiwan; Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, 123 University Road Section 3, Douliou, 64002, Yunlin, Taiwan
| | - Kuan Shiong Khoo
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan, Taiwan
| | - Dai-Viet N Vo
- Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, Ho Chi Minh City, 755414, Viet Nam
| | - Xuan Dong Bui
- The University of Danang, University of Science and Technology, 54 Nguyen Luong Bang st., 550 000, Danang, Viet Nam
| | - Meththika Vithanage
- Ecosphere Resilience Research Center, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, 10250, Sri Lanka
| | - Pau Loke Show
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia; Department of Sustainable Engineering, Saveetha School of Engineering, SIMATS, Chennai, 602105, India; Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, 325035, China.
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19
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Goveas LC, Nayak S, Vinayagam R, Loke Show P, Selvaraj R. Microalgal remediation and valorisation of polluted wastewaters for zero-carbon circular bioeconomy. BIORESOURCE TECHNOLOGY 2022; 365:128169. [PMID: 36283661 DOI: 10.1016/j.biortech.2022.128169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 10/15/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
Overexploitation of natural resources to meet human needs has considerably impacted CO2 emissions, contributing to global warming and severe climatic change. This review furnishes an understanding of the sources, brutality, and effects of CO2 emissions and compelling requirements for metamorphosis from a linear to a circular bioeconomy. A detailed emphasis on microalgae, its types, properties, and cultivation are explained with significance in attaining a zero-carbon circular bioeconomy. Microalgal treatment of a variety of wastewaters with the conversion of generated biomass into value-added products such as bio-energy and pharmaceuticals, along with agricultural products is elaborated. Challenges encountered in large-scale implementation of microalgal technologies for low-carbon circular bioeconomy are discussed along with solutions and future perceptions. Emphasis on the suitability of microalgae in wastewater treatment and its conversion into alternate low-carbon footprint bio-energies and value-added products enforcing a zero-carbon circular bioeconomy is the major focus of this review.
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Affiliation(s)
- Louella Concepta Goveas
- Nitte (Deemed to be University), NMAM Institute of Technology (NMAMIT), Department of Biotechnology Engineering, Nitte, Karnataka 574110, India
| | - Sneha Nayak
- Nitte (Deemed to be University), NMAM Institute of Technology (NMAMIT), Department of Biotechnology Engineering, Nitte, Karnataka 574110, India
| | - Ramesh Vinayagam
- Department of Chemical Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Pau Loke Show
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia; Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 325035, China; Department of Sustainable Engineering, Saveetha School of Engineering, SIMATS, Chennai 602105, India
| | - Raja Selvaraj
- Department of Chemical Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India.
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20
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Javed F, Zimmerman WB, Fazal T, Hafeez A, Mustafa M, Rashid N, Rehman F. Green Synthesis of Biodiesel from Microalgae Cultivated in Industrial Wastewater via Microbubble Induced Esterification using Bio-MOF-Based Heterogeneous Catalyst. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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21
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Coyle H, Wawrousek K. Rhodococcus opacus PD630 Bioconversion of Molasses Desugarized Solubles for Fatty Acid Production. Ind Biotechnol (New Rochelle N Y) 2022. [DOI: 10.1089/ind.2022.0025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Affiliation(s)
- Hanley Coyle
- Chemical Engineering, University of Wyoming, Laramie, WY 82071
| | - Karen Wawrousek
- Chemical Engineering, University of Wyoming, Laramie, WY 82071
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22
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Sero ET, Siziba N, Bunhu T, Shoko R. Light filtration technology for sustainable microalgal biomass production. BIOTECHNOL BIOTEC EQ 2022. [DOI: 10.1080/13102818.2022.2144455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Emmanuel Tapiwa Sero
- Department of Biology, Faculty of Natural Sciences and Mathematics, Chinhoyi University of Technology, Chinhoyi, Zimbabwe
| | - Nqobizitha Siziba
- Department of Biology, Faculty of Natural Sciences and Mathematics, Chinhoyi University of Technology, Chinhoyi, Zimbabwe
| | - Tavengwa Bunhu
- Department of Chemistry, Faculty of Natural Sciences and Mathematics, Chinhoyi University of Technology, Chinhoyi, Zimbabwe
| | - Ryman Shoko
- Department of Biology, Faculty of Natural Sciences and Mathematics, Chinhoyi University of Technology, Chinhoyi, Zimbabwe
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Ren H, Zhu G, Ni J, Shen M, Show PL, Sun FF. Enhanced photoautotrophic growth of Chlorella vulgaris in starch wastewater through photo-regulation strategy. CHEMOSPHERE 2022; 307:135533. [PMID: 35787884 DOI: 10.1016/j.chemosphere.2022.135533] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 06/07/2022] [Accepted: 06/26/2022] [Indexed: 06/15/2023]
Abstract
Microalgae biomass production with starch wastewater (SW) is a promising approach to realize waste recovery and cost reduction due to the inherent copious nutrients and nontoxic compounds in SW. However, the application of this technique is significantly hindered by low biomass production on account of the poor photosynthetic efficiency of microalgae. In this regard, we proposed a photo-regulation strategy characterized by the adjusting of numbers of light/dark (L/D) cycles, and compositions of light wavelength, which was proved to be an effective method for stimulating intracellular photo electron transfer and enhancing photosynthetic efficiency, to boost microalgae biomass accumulation. Additionally, responses of the microalgae photo-biochemical conversion, and the wastewater treatment performance at various number of L/D cycles and light wavelengths were discussed. The experimental results indicated that the biomass production increased when the L/D period was increased from 2 h:2 h-12 h:12 h. When the L/D period was 2 h:2 h, the biomass production reached a maximum value of 1.28 g L-1, which was 19.6% higher than that of the control group when the L/D period was 12 h:12 h. Furthermore, with respect to microalgae growth under monochromatic light, the maximum biomass concentration (1.25 g L-1) and lipid content (32.2%) of Chlorella were achieved under blue light; whereas, the minimum values were attained under red light (1.05 g L-1 and 19.3%, respectively). When the red light and blue light were mixed and supplied, the microalgae biomass productivity was higher than that under white light, and the highest lipid productivity was 109.0 mg-1 L-1 d under a blue: red ratio of 2:1. Moreover, gas chromatography analysis demonstrated that the methyl in the range of C16-C18 in the system was higher than 70%. Fatty acid methyl esters (FAMEs) containing palmitic acid (C16:0) and oleic acid (C18:1) are beneficial for production of biodiesel, and the quality of fatty acid methyl ester used in biodiesel production can be improved using microalgae cultured under the mixed wavelengths of blue and red. Finally, Chlorella was cultured in PBR and reached the peak concentration of 2.45 g L-1 by semi-continuous process with the HRT regulation.
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Affiliation(s)
- Hongyan Ren
- School of Environment Science and Civil Engineering, Jiangnan University, Wuxi, 214122, China; Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology, Wuxi, 214122, China.
| | - Guoqing Zhu
- School of Environment Science and Civil Engineering, Jiangnan University, Wuxi, 214122, China; Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology, Wuxi, 214122, China
| | - Jing Ni
- School of Environment Science and Civil Engineering, Jiangnan University, Wuxi, 214122, China; Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology, Wuxi, 214122, China
| | - Mingwei Shen
- School of Environment Science and Civil Engineering, Jiangnan University, Wuxi, 214122, China; Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology, Wuxi, 214122, China
| | - Pau Loke Show
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham Malaysia, 43500, Semenyih, Malaysia
| | - Fubao Fuelbiol Sun
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
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24
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Nayak S, Goveas LC, Selvaraj R, Vinayagam R, Manickam S. Advances in the utilisation of carbon-neutral technologies for a sustainable tomorrow: A critical review and the path forward. BIORESOURCE TECHNOLOGY 2022; 364:128073. [PMID: 36216285 DOI: 10.1016/j.biortech.2022.128073] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 09/29/2022] [Accepted: 10/01/2022] [Indexed: 06/16/2023]
Abstract
Global industrialisation and overexploitation of fossil fuels significantly impact greenhouse gas emissions, resulting in global warming and other environmental problems. Hence, investigations on capturing, storing, and utilising atmospheric CO2 create novel technologies. Few microorganisms, microalgae, and macroalgae utilise atmospheric CO2 for their growth and reduce atmospheric CO2 levels. Activated carbon and biochar from biomasses also capture CO2. Nanomaterials such as metallic oxides, metal-organic frameworks, and MXenes illustrate outstanding adsorption characteristics, and convert CO2 to carbon-neutral fuels, creating a balance between CO2 production and elimination, thus zeroing the carbon footprint. The need for a paradigm shift from fossil fuels and promising technologies on renewable energies, carbon capture mechanisms, and carbon sequestration techniques that help reduce CO2 emissions for a better tomorrow are reviewed to achieve the world's sustainable development goals. The challenges and possible solutions with future perspectives are also discussed.
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Affiliation(s)
- Sneha Nayak
- Nitte (Deemed to be University), NMAM Institute of Technology (NMAMIT), Department of Biotechnology Engineering, Nitte, Karnataka 574110, India
| | - Louella Concepta Goveas
- Nitte (Deemed to be University), NMAM Institute of Technology (NMAMIT), Department of Biotechnology Engineering, Nitte, Karnataka 574110, India
| | - Raja Selvaraj
- Department of Chemical Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Ramesh Vinayagam
- Department of Chemical Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Sivakumar Manickam
- Petroleum and Chemical Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Jalan Tungku Link Gadong, Bandar Seri Begawan BE1410, Brunei Darussalam.
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25
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Kanaga S, Silambarasan T, Malini E, Mangayarkarasi S, Dhandapani R. Optimization of biomass production from Chlorella vulgaris by response surface methodology and study of the fatty acid profile for biodiesel production: A green approach. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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26
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López-Pacheco IY, Rodas-Zuluaga LI, Cuellar-Bermudez SP, Hidalgo-Vázquez E, Molina-Vazquez A, Araújo RG, Martínez-Ruiz M, Varjani S, Barceló D, Iqbal HMN, Parra-Saldívar R. Revalorization of Microalgae Biomass for Synergistic Interaction and Sustainable Applications: Bioplastic Generation. Mar Drugs 2022; 20:md20100601. [PMID: 36286425 PMCID: PMC9605595 DOI: 10.3390/md20100601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/12/2022] [Accepted: 09/20/2022] [Indexed: 11/23/2022] Open
Abstract
Microalgae and cyanobacteria are photosynthetic microorganisms’ sources of renewable biomass that can be used for bioplastic production. These microorganisms have high growth rates, and contrary to other feedstocks, such as land crops, they do not require arable land. In addition, they can be used as feedstock for bioplastic production while not competing with food sources (e.g., corn, wheat, and soy protein). In this study, we review the macromolecules from microalgae and cyanobacteria that can serve for the production of bioplastics, including starch and glycogen, polyhydroxyalkanoates (PHAs), cellulose, polylactic acid (PLA), and triacylglycerols (TAGs). In addition, we focus on the cultivation of microalgae and cyanobacteria for wastewater treatment. This approach would allow reducing nutrient supply for biomass production while treating wastewater. Thus, the combination of wastewater treatment and the production of biomass that can serve as feedstock for bioplastic production is discussed. The comprehensive information provided in this communication would expand the scope of interdisciplinary and translational research.
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Affiliation(s)
- Itzel Y. López-Pacheco
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico
- Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey 64849, Mexico
| | | | | | | | | | - Rafael G. Araújo
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico
| | - Manuel Martínez-Ruiz
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico
- Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey 64849, Mexico
| | - Sunita Varjani
- Gujarat Pollution Control Board, Gandhinagar 382010, Gujarat, India
| | - Damià Barceló
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain
- Catalan Institute for Water Research (ICRA-CERCA), Parc Científic i Tecnològic de la Universitat de Girona, c/Emili Grahit, 101, Edifici H2O, 17003 Girona, Spain
- Sustainability Cluster, School of Engineering, University of Petroleum and Energy Studies, Dehradun 248007, Uttarakhand, India
- Correspondence: (D.B.); (H.M.N.I.); (R.P.-S.)
| | - Hafiz M. N. Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico
- Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey 64849, Mexico
- Correspondence: (D.B.); (H.M.N.I.); (R.P.-S.)
| | - Roberto Parra-Saldívar
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico
- Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey 64849, Mexico
- Correspondence: (D.B.); (H.M.N.I.); (R.P.-S.)
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27
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Larronde-Larretche M, Jin X. The Influence of Forward Osmosis Module Configuration on Nutrients Removal and Microalgae Harvesting in Osmotic Photobioreactor. MEMBRANES 2022; 12:892. [PMID: 36135910 PMCID: PMC9503523 DOI: 10.3390/membranes12090892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/12/2022] [Accepted: 09/14/2022] [Indexed: 06/16/2023]
Abstract
Microalgae have attracted great interest recently due to their potential for nutrients removal from wastewater, renewable biodiesel production and bioactive compounds extraction. However, one major challenge in microalgal bioremediation and the algal biofuel process is the high energy cost of separating microalgae from water. Our previous studies demonstrated that forward osmosis (FO) is a promising technology for microalgae harvesting and dewatering due to its low energy consumption and easy fouling control. In the present study, two FO module configurations (side-stream and submerged) were integrated with microalgae (C. vulgaris) photobioreactor (PBR) in order to evaluate the system performance, including nutrients removal, algae harvesting efficiency and membrane fouling. After 7 days of operation, both systems showed effective nutrients removal. A total of 92.9%, 100% and 98.7% of PO4-P, NH3-N and TN were removed in the PBR integrated with the submerged FO module, and 82%, 96% and 94.8% of PO4-P, NH3-N and TN were removed in the PBR integrated with the side-stream FO module. The better nutrients removal efficiency is attributed to the greater algae biomass in the submerged FO-PBR where in situ biomass dewatering was conducted. The side-stream FO module showed more severe permeate flux loss and biomass loss (less dewatering efficiency) due to algae deposition onto the membrane. This is likely caused by the higher initial water flux associated with the side-stream FO configuration, resulting in more foulants being transported to the membrane surface. However, the side-stream FO module showed better fouling mitigation by simple hydraulic flushing than the submerged FO module, which is not convenient for conducting cleaning without interrupting the PBR operation. Taken together, our results suggest that side-stream FO configuration may provide a viable way to integrate with PBR for a microalgae-based treatment. The present work provides novel insights into the efficient operation of a FO-PBR for more sustainable wastewater treatment and effective microalgae harvesting.
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Affiliation(s)
| | - Xue Jin
- School of Chemical Engineering, Biological Engineering & Environmental Engineering, Oregon State University, Corvallis, OR 97331, USA
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28
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Van Lal Chhandama M, Satyan KB. Sustainable approach for biodiesel production and wastewater treatment by cultivating Pleusrastrum insigne in wastewater. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2022; 25:679-686. [PMID: 35875946 DOI: 10.1080/15226514.2022.2103092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The globalized modern world has been confronted with some of the most challenging problems, most of which arise from human activities. Overexploitation of fossil fuels which leads to energy and environmental crisis, and loss of aquatic ecosystem due to improper disposal of household and industrial waste into water bodies constitute some of the biggest emerging global problems. In this study, an unconventional and sustainable approach to produce biodiesel was analyzed by growing Pleurastrum insigne in different wastewater. The growth of P. insigne in wastewater in turn resulted in up to 93.61% reduction in biological oxygen demand, 58.62% reduction in total phosphorus content, and up to 76.61% total nitrogen removal in the wastewater. The total lipid content of the organism was highest in wastewater sample 6 (30.47%). The fatty acid profile also showed a high percentage of C16 and C18 fatty acids which are desirable fatty acids for a high-grade fuel. Production of biodiesel conforming to international standards was predicted from P. insigne cultivated in wastewater confirming the effectiveness of combining wastewater treatment and biodiesel production. Novelty statement: Pleurastrum insigne has never been studied before for phytoremediation of wastewater and biodiesel production. This novel research highlighted the application of P. insigne in wastewater treatment and the viable scope in biodiesel production. This work aimed to provide a significant contribution in reducing the cost of production of biodiesel from microalgae while shedding new light on an eco-friendly approach to wastewater treatment.
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Affiliation(s)
- Michael Van Lal Chhandama
- Department of Biotechnology, School of Sciences (Block-I), JAIN (Deemed-to-be University), Bengaluru, India
| | - Kumudini Belur Satyan
- Department of Biotechnology, School of Sciences (Block-I), JAIN (Deemed-to-be University), Bengaluru, India
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29
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Goswami RK, Agrawal K, Verma P. An exploration of natural synergy using microalgae for the remediation of pharmaceuticals and xenobiotics in wastewater. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102703] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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30
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Ummalyma SB, Singh A. Biomass production and phycoremediation of microalgae cultivated in polluted river water. BIORESOURCE TECHNOLOGY 2022; 351:126948. [PMID: 35257884 DOI: 10.1016/j.biortech.2022.126948] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/28/2022] [Accepted: 03/01/2022] [Indexed: 06/14/2023]
Abstract
The present study evaluated polluted river water as a medium for the growth of oleaginous microalgae under mixotrophic conditions. Microalgae grow in the medium and produce biomass, pigments, and lipids with the removal of pollution loads from wastewater. Selenastrum sp. SL7 produced maximum biomass and lipids of 660 mg L-1 and 194.5 mg L-1, respectively. Fatty acid profiling data showed that elevated saturated fatty acid production and major fatty acids found in lipid from these algae were palmitic acids, oleic acid, stearic acid, linolenic acid, and linoleic acid. The low percentage of polyunsaturated fatty acids of EPA was also detected. Water quality in terms of pH, DO, TDS, COD, and BOD was significantly improved. The use of this medium for microalgae cultivation not only improves the biomass and lipid yields but also serves as an excellent means of phycoremediation of pollutants in waste streams with value addition and environmental benefits.
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Affiliation(s)
- Sabeela Beevi Ummalyma
- Institute of Bioresources and Sustainable Development (IBSD), An Autonomous Institute Under the Department of Biotechnology, Govt. of India, Takyelpat, Imphal 795001, Manipur, India.
| | - Anamika Singh
- Institute of Bioresources and Sustainable Development (IBSD), An Autonomous Institute Under the Department of Biotechnology, Govt. of India, Takyelpat, Imphal 795001, Manipur, India
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31
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Microalgal Cultures for the Bioremediation of Urban Wastewaters in the Presence of Siloxanes. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19052634. [PMID: 35270319 PMCID: PMC8909507 DOI: 10.3390/ijerph19052634] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/20/2022] [Accepted: 02/23/2022] [Indexed: 11/25/2022]
Abstract
Microalgae are widely used in the bioremediation of wastewaters due to their efficient removal of pollutants such as nitrogen, phosphorus, and contaminants of emerging concern (CECs). Siloxanes are CECs that reach wastewater treatment plants (WWTPs), leading to the production of biogas enriched with these compounds, associated with the breakdown of cogeneration equipment. The biological removal of siloxanes from wastewaters could be a sustainable alternative to the costly existing technologies, but no investigation has been performed using microalgal cultures for this purpose. This study evaluated the ability of Chlorella vulgaris to bioremediate primary (PE) and secondary (SE) urban effluents and remove volatile methylsiloxanes (VMSs). C. vulgaris grew successfully in both effluents, and approximately 86% of nitrogen and 80% of phosphorus were efficiently removed from the PE, while 52% of nitrogen and 87% of phosphorus were removed from the SE, and the presence of VMSs does not seem to have a negative influence on nutrient removal. Three out of the seven of the analysed VMSs were detected in the microalgal biomass at the end of the PE assay. However, dodecamethylcyclohexasiloxane (D6) was the one that accumulated to a greater extent, since 48% of the initial mass of D6 was detected in the biomass samples. D6 is one of the most lipophilic VMSs, which might contribute to the higher adsorption onto the surface of microalgae. Overall, the results indicate C. vulgaris’ potential to remove specific VMSs from effluents.
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32
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Jain R, Mishra S, Mohanty K. Cattle wastewater as a low-cost supplement augmenting microalgal biomass under batch and fed-batch conditions. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 304:114213. [PMID: 34896802 DOI: 10.1016/j.jenvman.2021.114213] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 11/16/2021] [Accepted: 11/28/2021] [Indexed: 06/14/2023]
Abstract
The utilization of costly chemical fertilizers and large freshwater requirements make the microalgae cultivation process uneconomical and highly unsustainable. To address this challenge, the present study aimed to integrate cattle wastewater (CW) (alternate for fertilizers) with domestic sewage wastewater (DSW) (substitute for freshwater) to cultivate Chlorella thermophile. To maximize the biomass yield, in-depth nutrient consumption patterns in both batch and fed-batch cultivation conditions were analyzed. Out of the eight (1%-4.5%) different CW feed concentrations tested during the batch cultivation, 2.5% CW set gave the highest biomass yield (2.17 g L-1), which was almost double the yield obtained using Bold Basal Medium (1.24 g L-1) and DSW without any CW addition (1.22 g L-1). However, the biomass yield declined with CW> 2.5%, and the ammonium (NH4+) inhibitory effect was observed. To address the (NH4+) toxicity challenge and further enhance the biomass yield, fed-batch experiments were designed with an intermittent CW feeding based on nutrient (NH4+) consumption pattern. The fed-batch cultivation resulted in twofold increased biomass yield (4.52 g L-1) in comparison to the batch process. The nutrient consumption pattern inferred that the (NH4+) concentration greater than 600 mg L-1 during the logarithmic phase was inhibitory for Chlorella thermophila cells. On biomass characterization, a significant improvement in protein content with CW addition was observed. The FAME analysis of the derived lipid stated its competitive biofuel quality with up-gradation of C:16 and C:18 groups. Based on the obtained results, projection analysis for an integrated rural model demonstrated the technology's potential for sustainable water management with valuable resource recovery.
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Affiliation(s)
- Rahul Jain
- School of Energy Science and Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, India
| | - Sanjeev Mishra
- School of Energy Science and Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, India
| | - Kaustubha Mohanty
- School of Energy Science and Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, India; Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, India.
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33
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Microalgal Systems for Wastewater Treatment: Technological Trends and Challenges towards Waste Recovery. ENERGIES 2021. [DOI: 10.3390/en14238112] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Wastewater (WW) treatment using microalgae has become a growing trend due the economic and environmental benefits of the process. As microalgae need CO2, nitrogen, and phosphorus to grow, they remove these potential pollutants from wastewaters, making them able to replace energetically expensive treatment steps in conventional WW treatment. Unlike traditional sludge, biomass can be used to produce biofuels, biofertilizers, high value chemicals, and even next-generation growth media for “organically” grown microalgal biomass targeting zero-waste policies and contributing to a more sustainable circular bioeconomy. The main challenge in this technology is the techno-economic feasibility of the system. Alternatives such as the isolation of novel strains, the use of native consortia, and the design of new bioreactors have been studied to overcome this and aid the scale-up of microalgal systems. This review focuses on the treatment of urban, industrial, and agricultural wastewaters by microalgae and their ability to not only remove, but also promote the reuse, of those pollutants. Opportunities and future prospects are discussed, including the upgrading of the produced biomass into valuable compounds, mainly biofuels.
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Musetsho P, Renuka N, Guldhe A, Singh P, Pillay K, Rawat I, Bux F. Valorization of poultry litter using Acutodesmus obliquus and its integrated application for lipids and fertilizer production. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 796:149018. [PMID: 34274677 DOI: 10.1016/j.scitotenv.2021.149018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 07/08/2021] [Accepted: 07/09/2021] [Indexed: 06/13/2023]
Abstract
Microalgae are recognized as potential candidates for resource recovery from wastewater and projected for biorefinery models. This study was undertaken to evaluate the potential of poultry litter and municipal wastewater as nutrient and water sources, for the cultivation of Acutodesmus obliquus for lipids production for biodiesel application. The efficacy of lipid extracted biomass (LEA) as fertilizer for mung bean crops was also assessed in microcosm. A. obliquus cultivation in acid pre-treated poultry litter extract (PPLE) showed maximum biomass production of 1.90 g L-1, which was 74.67% and 12.61% higher than the raw poultry litter extract (RPPE) and BG11 respectively. Higher NO3-N, NH3-N, and PO4-P removal of 79.51%, 81.82%, and 80.52% respectively were observed in PPLE as compared to RPLE treatment. The highest biomass (140.36 mg L-1 d-1), lipids (38.49 mg L-1 d-1), and carbohydrates (49.55 mg L-1 d-1) productivities were observed in the PPLE medium. The application of LEA as a fertilizer for mung bean crops showed improvement in plant growth and soil microbial activity. A maximum increase in organic carbon (59.5%) and dehydrogenase activity (130.8%) was observed in LEA amended soil which was significantly higher than chemical fertilizer (CF) control in 30 days. Whilst plant fresh weight and leaf chlorophyll in the LEA amended soil was comparable to whole algal biomass (WA) and CF control. The strategy developed could be a basis for sustainable biorefinery for the valorization of wastewater for the production of microalgae-derived biofuel and byproducts for agricultural application.
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Affiliation(s)
- Pfano Musetsho
- Institute for Water and Wastewater Technology, Durban University of Technology, PO Box 1334, Durban 4000, South Africa
| | - Nirmal Renuka
- Institute for Water and Wastewater Technology, Durban University of Technology, PO Box 1334, Durban 4000, South Africa
| | - Abhishek Guldhe
- Institute for Water and Wastewater Technology, Durban University of Technology, PO Box 1334, Durban 4000, South Africa; Amity Institute of Biotechnology, Amity University, Mumbai 410206, India
| | - Poonam Singh
- Institute for Water and Wastewater Technology, Durban University of Technology, PO Box 1334, Durban 4000, South Africa
| | - Kriveshin Pillay
- Institute for Water and Wastewater Technology, Durban University of Technology, PO Box 1334, Durban 4000, South Africa
| | - Ismail Rawat
- Institute for Water and Wastewater Technology, Durban University of Technology, PO Box 1334, Durban 4000, South Africa
| | - Faizal Bux
- Institute for Water and Wastewater Technology, Durban University of Technology, PO Box 1334, Durban 4000, South Africa.
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35
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Carvalho YO, Oliveira> WV, Pagano RL, Silva CF. Application of Artificial Neural Networks in the Tertiary Treatment of Liquid Effluent with the Microalgae
Chlorella vulgaris. Chem Eng Technol 2021. [DOI: 10.1002/ceat.202100277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yasmin O. Carvalho
- Federal University of Sergipe Postgraduate Program in Chemical Engineering Ave. Marechal Rondon 49100-000 São Cristóvão Brazil
| | - Weverton V. Oliveira>
- Federal University of Sergipe Department of Chemical Engineering/Industrial Biochemistry Laboratory Ave. Marechal Rondon 49100-000 São Cristóvão Brazil
| | - Rogério L. Pagano
- Federal University of Sergipe Postgraduate Program in Chemical Engineering Ave. Marechal Rondon 49100-000 São Cristóvão Brazil
| | - Cristina F. Silva
- Federal University of Sergipe Postgraduate Program in Chemical Engineering Ave. Marechal Rondon 49100-000 São Cristóvão Brazil
- Federal University of Sergipe Department of Chemical Engineering/Industrial Biochemistry Laboratory Ave. Marechal Rondon 49100-000 São Cristóvão Brazil
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