Article
Green & Sustainable Science & Technology
Yuming Zhong, Hui Liu, Huankai Li, Qian Lu, Yan Sun
Summary: This study focuses on the interactive network analysis between algae and wastewater-borne bacteria to identify beneficial bacteria and assess the impact of glycerol on a beneficial bacterial strain. Results showed that co-cultivating microalgae and Pseudomonas dramatically enhanced biomass yield and nutrients removal efficiencies, but the addition of glycerol led to the collapse of the algal-bacterial consortia in the late stage of co-cultivation, reducing treatment efficiency and biomass. It is suggested that non-fermentative bacteria as main probiotics in algal-based wastewater remediation should be used to provide small-molecule-weight organics as carbon sources.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Hongli Cui, Jie Yu, Xiaoli Zhu, Yulin Cui, Chunli Ji, Chunhui Zhang, Jinai Xue, Xiaoyun Jia, Song Qin, Runzhi Li
Summary: The combination of Fenton oxidation and algal cultivation system shows high efficiency in nutrients removal, algal growth promotion and biomass production in the treatment of chicken farm flushing wastewater.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Biotechnology & Applied Microbiology
M. Blanco-Vieites, D. Suarez-Montes, F. Delgado, M. Alvarez-Gil, A. Hernandez Battez, E. Rodriguez
Summary: This study tested the tolerance capacity of various algae to steel hot-rolling wastewater and found that spirulina could effectively reduce hydrocarbons and iron concentration in the wastewater, making it a potential sustainable bioremediation tool.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Environmental Sciences
Rebeca Lopez-Serna, Silvia Bolado, Ruben Irusta, Juan J. Jimenez
Summary: This study presents the concentration data of veterinary drugs in microalgae biomass collected from photobioreactors fed with piggery wastewaters for the first time. A comprehensive sample preparation method is recommended to monitor all intended analytes, and a linear relationship between the concentrations measured in biomass and effluent has been observed for most of the drugs.
Article
Environmental Sciences
Elena M. Rojo, Simone Rossi, Silvia Bolado, Paola Gallo Stampino, Elena Ficara, Giovanni Dotelli
Summary: Piggery wastewater, rich in nutrients, must be properly managed for environmental viability. The use of microalgae to treat such wastewater is a sustainable process that can recover nutrients and reduce CO2 emissions. Research shows that membrane harvesting and CO2 capture technologies can significantly decrease environmental impacts in producing microalgae-based biostimulants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Engineering, Environmental
Juan Peng, Kai-Lu Cao, Si-Bo Lv, Yu-Xuan Hu, Jia Lin, Qian-Zhi Zhou, Jiang -Hai Wang
Summary: This article reviews the technology of using microalgae to remove antibiotic contaminants, including strain selection, treatment systems, and degradation mechanisms. The article points out that isolating ideal microalgae strains and developing efficient cultivation modes are crucial for improving removal efficiency. In addition, the article summarizes novel approaches to antibiotic degradation by microalgae and discusses related ecological considerations.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Agricultural Engineering
Paola Santander, Bryan Butter, Estefania Oyarce, Mauricio Yanez, Ling-Ping Xiao, Julio Sanchez
Summary: Water is essential for life on earth, and its decontamination is crucial. Lignin, as an environmentally friendly adsorbent material, can be modified to interact with metal ions, improving the removal efficiency of heavy metal ions.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Agricultural Engineering
Shangzong Li, Dongxu Xing, Cheng Sun, Chunji Jin, Yangguo Zhao, Mengchun Gao, Liang Guo
Summary: In order to achieve cost-effective mariculture wastewater treatment, a novel Bacteria-Algae Coupling Reactor (BACR) integrating acidogenic fermentation with microalgae cultivation was used. This study investigated the impact of different concentrations of mariculture wastewater on pollutant removal and high-value product recovery. The results showed that an optimal concentration of 8 g/L improved the growth and biochemical components synthesis of Chlorella vulgaris, increasing the potential for high-value product recovery. The BACR demonstrated excellent removal efficiency for chemical oxygen demand, ammonia-nitrogen, and total phosphorus.
BIORESOURCE TECHNOLOGY
(2023)
Review
Environmental Studies
Sandeep Panda, Srabani Mishra, Ata Akcil, Mehmet Ali Kucuker
Summary: Conventional activated sludge nutrient removal process is expensive, while microalgal applications offer a cost-effective method for wastewater treatment. Microalgae not only reduce harmful substances like coliform bacteria and heavy metals, but also produce valuable biomass.
ENERGY & ENVIRONMENT
(2021)
Article
Engineering, Environmental
Francis Vincent, Toleti Subba Rao, Rajesh Kumar, Yarlagadda Venkata Nancharaiah
Summary: This study focuses on the development and use of algal-bacterial granules for the treatment of wastewater. The study found that these granules, cultivated in a photobioreactor under natural daylight and low organic loading rate, exhibited excellent settling properties and achieved high removal efficiencies for turbidity, COD, TOC, NH4+-N, and NO2--N/NO3--N.
WATER ENVIRONMENT RESEARCH
(2023)
Article
Environmental Sciences
Elizandro Oliveira Silveira, Nathalia Mendes Felizzola, Eugenia Vargas Hickmann, Odorico Konrad, Carlos Alexandre Lutterbeck, Enio Leandro Machado, Lucia Ribeiro Rodrigues
Summary: The present study evaluated the potential for biogas generation from microalgae biomass and macrophytes used in vertical flow constructed wetlands. The results showed that this method can effectively degrade pollutants while producing usable biomass energy and biogas.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Biotechnology & Applied Microbiology
Jun Qian, Xiru Zhang, Jiali Cheng, Zeyu Jin, Haifeng Zhu
Summary: This study confirmed the potential of nitrified anaerobic digestion effluent (NADPE) as a culture medium for Chlorella vulgaris. Undiluted NADPE, combined with additional inputs of magnesium and dissolved inorganic carbon, achieved optimal conditions for maximum algal biomass productivity and nutrient removal in continuous cultivation system.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Review
Environmental Sciences
Pachara Sattayawat, Ian S. Yunus, Nuttapol Noirungsee, Nilita Mukjang, Wasu Pathom-Aree, Jeeraporn Pekkoh, Chayakorn Pumas
Summary: This study explores the use of synthetic biology to enhance heavy metal bio-removal by microalgae, identifying potential genes and proteins for future research and development of more advanced systems.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2021)
Article
Polymer Science
Carlos A. Ligarda-Samanez, David Choque-Quispe, Henry Palomino-Rincon, Betsy S. Ramos-Pacheco, Elibet Moscoso-Moscoso, Mary L. Huaman-Carrion, Diego E. Peralta-Guevara, Mirian E. Obregon-Yupanqui, Jimmy Aroni-Huaman, Eyner Y. Bravo-Franco, Wilbert Palomino-Rincon, German de la Cruz
Summary: This study evaluated different biosorbents from Rumex acetosella weed for the removal of metal cations in wastewater. The mixed treatment with particle size of 250 μm showed the best performance, removing up to 96.14% of lead. Thermal analysis and structural characteristics indicated that the new biosorbents had higher chelating capacity. The Langmuir and pseudo-second order models provided better fit to the adsorption data. These new biosorbents could be used economically and efficiently in wastewater treatment.
Article
Environmental Sciences
Graziella Chini Zittelli, Ana Margarita Silva Benavides, Tina Silovic, Karolina Ranglova, Jiri Masojidek, Bernardo Cicchi, Cecilia Faraloni, Eleftherios Touloupakis, Giuseppe Torzillo
Summary: The growth of freshwater microalga Chlamydopodium fusiforme in diluted piggery wastewater was tested for biomass production. The results showed that diluted wastewater increased biomass yield and nitrogen and phosphorus removal rate, but undiluted wastewater caused bacterial load and hindered algal growth. In addition, the algae grown in diluted wastewater exhibited good photosynthetic performance but had lower chlorophyll and carotenoid contents. The biomass showed antimicrobial activity but weak biostimulant activity.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Milena Marycz, Anna Brillowska-Dabrowska, Sara Cantera, Jacek Gebicki, Raul Munoz
Summary: The potential of Candida subhashii, Fusarium solani, and their consortium for the degradation of n-hexane, trichloroethylene (TCE), toluene, and alpha-pinene in biofilters and biotrickling filters was systematically evaluated in this study. The results showed that biotrickling filters exhibited superior biodegradation performance compared to biofilters, regardless of the volatile organic compounds (VOCs) tested. Additionally, a more effective VOC biodegradation was observed when C. subhashii and F. solani were grown as a consortium.
Article
Environmental Sciences
Faiza Noune, Nadjla Chaib, Hadjer Kaddeche, Sabrina Dzizi, Sophia Metallaoui, Saul Blanco
Summary: Increased salt concentration is a common problem affecting freshwater globally. Periphytic diatoms, specifically, react to this alteration by modifying their structure and physiology, resulting in the appearance of teratological forms. Experimental results confirm the harmful effect of salinity on periphytic diatoms and their ability to adapt to new stress conditions.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Biochemistry & Molecular Biology
Sergio Bordel, Diego Martin-Gonzalez, Raul Munoz, Fernando Santos-Beneit
Summary: This study reports the genome of Bacillus altitudinis B12, a bacterium that efficiently degrades PLA and keratin. The genome analysis revealed the presence of genes encoding keratinase and PLA depolymerase, which explain the biodegradation capability of the strain. This bacterium has potential applications in environmentally friendly biotechnology.
MOLECULAR GENETICS AND GENOMICS
(2023)
Article
Environmental Sciences
Raquel Viso, Saul Blanco
Summary: The time required for diatom assemblages to integrate the abiotic variables of the aquatic environment has been a subject of discussion. This study compares the widely used Specific Polluosensitivity Index (SPI) with the Water Quality Index (WQI) in the Duero Basin. The results show that diatom indices actually indicate past water conditions in rivers.
Article
Biotechnology & Applied Microbiology
Paula Bucci, Octavio Garcia-Depraect, Enrique Jose Marcos Montero, Noemi Zaritzky, Alejandro Caravelli, Raul Munoz
Summary: This study developed a self-sustaining microalgal-bacterial granular sludge process for the treatment of industrial wastewater, achieving complete removal of phenol and ammonia. The performance of the microalgal-bacterial system was compared with a conventional aerobic bacterial system, showing similar nitrogen removal efficiency. Higher simultaneous nitrification and denitrification occurred in the aerobic bacterial system, while nitrogen assimilation by the microalgal-bacterial biomass compensated for the lower denitrification activity in the microalgal-bacterial system. The application of the microalgal-bacterial system was found to be more cost-effective and sustainable.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Review
Multidisciplinary Sciences
Cristian A. A. Sepulveda-Munoz, Ignacio de Godos, Raul Munoz
Summary: Piggery wastewater is characterized by high concentrations of organic matter and ammonium, as well as odour nuisance. Photosynthetic microorganisms such as purple phototrophic bacteria (PPB) and microalgae have been found to be effective in sustainable wastewater treatment using engineered photobioreactors, with low operating costs and efficient recovery of carbon, nitrogen and phosphorous.
Article
Chemistry, Multidisciplinary
Laura Vargas-Estrada, Edwin G. Hoyos, Lara Mendez, P. J. Sebastian, Raul Munoz
Summary: The addition of carbon-coated zero-valent iron nanoparticles at a concentration of 70 mg L-1 enhanced photosynthetic activity and increased biomass concentration. It also improved CO2 removal and increased the methane concentration in the upgraded biogas. However, the higher biomass productivity led to a depletion of the inorganic carbon concentration and a reduction in buffer capacity, requiring further optimization of operational conditions.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Article
Chemistry, Multidisciplinary
Javier Gonzalez-Martin, Sara Cantera, Raquel Lebrero, Raul Munoz
Summary: Biotechnologies, particularly bioactive coatings, are effective in reducing indoor air pollutants by allowing direct contact between microorganisms and gas pollutants. The removal efficiency of toluene, alpha-pinene, and n-hexane was assessed in three bioreactors with different inoculum and operational conditions. Toluene and alpha-pinene removals >90% were achieved in two bioreactors, while hexane showed low removal efficiency due to mass transfer limitations.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Article
Chemistry, Medicinal
Jorge Garcia-Marquez, Bruna Rodrigues Moreira, Piedad Valverde-Guillen, Sofia Latorre-Redoli, Candela T. Caneda-Santiago, Gabriel Acien, Eduardo Martinez-Manzanares, Manuel Mari-Beffa, Roberto T. Abdala-Diaz
Summary: This study investigated the cytotoxic activity of ulvan polysaccharides obtained from Ulva rigida against human cancer cell lines and zebrafish embryos. The results showed that ulvan had cytotoxic effects on human cancer cell lines, particularly on colon cancer cells. However, ulvan also had negative effects on the growth rate and osmolar balance of zebrafish embryos, indicating that its use should be limited to specific concentrations.
Article
Energy & Fuels
Celia Pascual, Sara Cantera, Raul Munoz, Raquel Lebrero
Summary: Upgrading biogas to remove siloxanes is necessary for its use as a substitute for fossil fuels. The study optimized two parameters, trickling liquid velocity and internal gas recirculation, in biotrickling filters to improve the biological removal of siloxanes. Increasing the trickling liquid velocity improved removal efficiency under both aerobic and anoxic conditions, while excessive turbulence caused by a further increase in velocity and gas recirculation had a negative effect. Different bacterial populations were dominant in siloxane degradation under aerobic and anoxic conditions.
Article
Engineering, Environmental
Maria del Rosario Rodero, Alessandro A. Carmona-Martinez, Cristina Martinez-Fraile, Raquel Herrero-Lobo, Elisa Rodriguez, Pedro A. Garcia-Encina, Mar Pena, Raul Munoz
Summary: This study assessed the potential of producing ectoine from biogas under different reactor conditions and found that a stand-alone reactor demonstrated the best performance in ectoine accumulation and CH4 degradation.
Article
Engineering, Environmental
Andres F. Torres-Franco, Deborah Leroy-Freitas, Cristina Martinez-Fraile, Elisa Rodriguez, Pedro A. Garcia-Encina, Raul Munoz
Summary: Anaerobic and microalgae-based technologies have emerged as sustainable alternatives for municipal wastewater treatment. However, the presence of viruses in the treated wastewater is a major concern for reuse applications. This study assessed the ability of these technologies to reduce viruses during secondary wastewater treatment. The results showed that all technologies were effective in reducing the concentration of viruses, with microalgae-based treatment exhibiting the highest potential for reducing the disinfection requirements of treated wastewater.
Article
Environmental Sciences
Sara Cantera, Elisa Rodriguez, Nicolas Santaella Vecchini, Juan Carlos Lopez, Pedro A. Garcia-Encina, Diana Z. Sousa, Raul Munoz
Summary: This study investigated the survival and metabolic mechanisms of methane oxidizing bacteria (MOB) under low methane concentrations. The research found that the activity and energy production of methane oxidation were not lost during starvation periods, and poly-hydroxyalkanoate and nitrification metabolism played important roles in maintaining cell viability of MOB. The genus Methylocystis emerged as a key MOB in environments with diluted and intermittent methane emissions.
ENVIRONMENTAL RESEARCH
(2023)
Article
Agricultural Engineering
Yinping Xiang, Meiying Jia, Rui Xu, Jialu Xu, Lele He, Haihao Peng, Weimin Sun, Dongbo Wang, Weiping Xiong, Zhaohui Yang
Summary: This study investigated the impact of the non-antibiotic pharmaceutical carbamazepine on antibiotic resistance genes (ARGs) during anaerobic digestion. The results showed that carbamazepine induced the enrichment of ARGs and increased the abundance of bacteria carrying these genes. It also facilitated microbial aggregation and intercellular communication, leading to an increased frequency of ARGs transmission. Moreover, carbamazepine promoted the acquisition of ARGs by pathogens and elevated their overall abundance.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Weixin Zhao, Tianyi Hu, Hao Ma, Dan Li, Qingliang Zhao, Junqiu Jiang, Liangliang Wei
Summary: This review summarizes the effects and potential mechanisms of biochar on microbial behavior in AD systems. The addition of biochar has been found to promote microbial colonization, alleviate stress, provide nutrients, and enhance enzyme activity. Future research directions include targeted design of biochar, in-depth study of microbial mechanisms, and improved models.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Christina Karmann, Anna Magrova, Pavel Jenicek, Jan Bartacek, Vojtech Kouba
Summary: This review assesses nitrogen removal technologies in reject water treatment, highlighting the differences in environmental impacts and economic benefits. Partial nitritation-anammox shows potential for economic benefits and positive environmental outcomes when operated and controlled properly.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Wei-Hao Huang, Ying-Ju Chang, Duu-Jong Lee
Summary: This study modified pinecone biochar with layered double hydroxide (LDH) to enhance its adsorption capacity for heavy metal and phosphate ions. The LDH-biochar showed significantly improved adsorption capacities for Pb2+ and phosphate, and a slight increase for Cu2+ and Co2+. The LDH layer enhanced the adsorption through various mechanisms.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Chao Song, Fanfan Cai, Shuang Yang, Ligong Wang, Guangqing Liu, Chang Chen
Summary: This paper developed a machine learning model to predict the biochemical methane potential during anaerobic digestion. Model analysis identified lignin content, organic loading, and nitrogen content as key attributes for methane production prediction. For feedstocks with high cellulose content, early methane production is lower but can be improved by prolonging digestion time. Moreover, lignin content exceeding a certain value significantly inhibits methane production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sang Min Lee, Ju Young Lee, Ji-Sook Hahn, Seung-Ho Baek
Summary: This study successfully developed an efficient platform strain using Yarrowia lipolytica for the bioconversion of renewable resources into adipic acid, achieving a remarkable increase in production level.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sefkan Kendir, Matthias Franzreb
Summary: This study presents a novel approach using magnetic separation to efficiently harvest freshwater microalgae, Chlorella vulgaris. By combining pH-induced calcium phosphate precipitation with cheap natural magnetite microparticles, harvesting efficiencies up to 98% were achieved in the model medium.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Ishaq Kariim, Ji-Yeon Park, Wajahat Waheed Kazmi, Hulda Swai, In-Gu Lee, Thomas Kivevele
Summary: The impact of reaction temperature, residence time, and ethanol: acetone on the energy compositions and yield enhancement of biocrudes was investigated. The results showed that under appropriate conditions, biocrudes with high energy and low oxygen content can be obtained, indicating a high potential for utilization.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xiyue Zhang, Xiyao Li, Liang Zhang, Yongzhen Peng
Summary: Intermittent aeration is an innovative approach to enhance nitrogen removal in low carbon-to-nitrogen ratio municipal sewage, providing an efficient strategy for the continuous plug-flow AOA process.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xu Yang, Mahmoud Mazarji, Mengtong Li, Aohua Li, Ronghua Li, Zengqiang Zhang, Junting Pan
Summary: This study investigated the impact of magnetite on the nitrogen cycle of pig manure biostabilisation. The addition of magnetite increased N2O emissions and decreased NH3 emissions during composting. It also increased the total nitrogen content but should be considered for its significant increase in N2O emissions in engineering practice.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Ty Shitanaka, Haylee Fujioka, Muzammil Khan, Manpreet Kaur, Zhi-Yan Du, Samir Kumar Khanal
Summary: The market value of microalgae has exponentially increased in the past two decades, thanks to their applications in various industries. However, the supply of high-value microalgal bioproducts is limited due to several factors, and strategies are being explored to overcome these limitations and improve microalgae production, thus increasing the availability of algal-derived bioproducts in the market.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Martin Kerner, Thorsten Wolff, Torsten Brinkmann
Summary: The efficiency of using enriched CO2 from flue gas for large-scale production of green microalgae has been studied. The results show that the use of membrane devices and static mixers can effectively improve the CO2 recovery rate and maintain the suitable pH and temperature during cultivation, achieving a more economical and sustainable microalgae production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rui Ma, Ji Li, Rd Tyagi, Xiaolei Zhang
Summary: This review summarizes the microorganisms capable of using CO2 and CH4 to produce PHAs, illustrating the production process, factors influencing it, and discussing optimization techniques. It identifies the challenges and future prospects for developing economically viable PHAs production using GHGs as a carbon source.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Bing Wang, Peng Zhang, Xu Guo, Xu Bao, Junjie Tian, Guomin Li, Jian Zhang
Summary: The addition of zeolite in the co-composting of chicken manure and straw significantly reduced the emissions of ammonia and N2O, and increased the nitrate content. Zeolite also promoted the abundance of nitrification genes and inhibited the expression of denitrification genes.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rohit Dey, Franziska Ortiz Tena, Song Wang, Josef Martin Messmann, Christian Steinweg, Claudia Thomsen, Clemens Posten, Stefan Leu, Matthias S. Ullrich, Laurenz Thomsen
Summary: This study investigated the operation of a 1000L microalgae-based membrane photobioreactor system for continuous secondary wastewater treatment. The research focused on a green microalgae strain called Desmodesmus sp. The study aimed to understand key trends and optimization strategies by conducting experiments in both summer and winter seasons. The findings showed that maintaining low cell concentrations during periods of light inhibition was beneficial for nutrient uptake rates. Effective strategies for enhancing algae-based wastewater treatment included cell mass recycling and adjusting dilution rates based on light availability.
BIORESOURCE TECHNOLOGY
(2024)
