Article
Biotechnology & Applied Microbiology
Murat Sahan, Mona Fardinpoor, Vedat Yilmaz, Fatih Yilmaz, N. Altinay Perendeci
Summary: In this study, a cyanobacteria called Desertifilum tharense with energy generation potential was isolated from water sources in Denizli, Turkey. The culture-specific parameters and characterization analyses were identified, and production in photoreactors under laboratory conditions was performed. The high temperature-pressure pretreatment process (HTPP) was used to increase methane production efficiency, but it was found to be unsuitable for biofuel methane production from D. tharense.
FERMENTATION-BASEL
(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)
Review
Environmental Sciences
Mamta Bhandari, Pushpendar Kumar, Pankaj Bhatt, Halis Simsek, Ravinder Kumar, Aman Chaudhary, Anushree Malik, Sanjeev Kumar Prajapati
Summary: Eutrophication poses a major challenge in aquatic environments due to the discharge of nutrient-rich industrial wastewater. Algae offer a sustainable solution for wastewater treatment, with the potential for biomass production and biofuel generation. Factors such as growth media composition, light intensity, temperature, and pH influence algal growth and remediation potential. Additionally, anaerobic digestion of wastewater-grown algae can produce methane-rich biogas, further enhancing the potential of this technology.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Energy & Fuels
Marta Oleszek, Izabela Krzeminska
Summary: The study found that ultrasonic pretreatment has significantly different effects on high-protein microalgal biomass compared to carbohydrate-rich microalgae, showing positive changes in methane fermentation process by decreasing structural complex carbohydrates content in one case and negative impacts on methane fermentation due to protein aggregation and formation of NH2 group in the other.
Article
Chemistry, Physical
Yequan Sheng, Sabarathinam Shanmugam, Arunachalam Chinnathambi, Saleh H. Salmen, Shengbo Ge, Changlei Xia, Kathirvel Brindhadevi
Summary: Algal biomass is a promising and sustainable candidate for biofuel/chemical production through anaerobic digestion, which has shown improved methane yield when microalgae and macroalgae are co-digested with proper nutrient balance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Shuaishuai Ma, Yuling Li, Jingxue Li, Xiaona Yu, Zongjun Cui, Xufeng Yuan, Wanbin Zhu, Hongliang Wang
Summary: This review classifies and analyzes the pretreatment technologies of lignocellulosic biomass based on different driving forces, and evaluates the combined pretreatment technologies, revealing their potential applications in the biomass energy industry.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Agricultural Engineering
Shuaishuai Ma, Hongliang Wang, Binshou Wang, Xiaohui Gu, Wanbin Zhu
Summary: The study demonstrated that pretreatment with CO2 and liquid digestate from anaerobic digestion can improve the glucose and xylose content of corn straw, reduce cellulose crystallinity, and increase methane yield. However, high temperature pretreatment resulted in the production of inhibitors that decreased methane production during subsequent anaerobic digestion. The changes in microbial community in the pretreated slurry at lower temperature were found to enhance the overall performance of anaerobic digestion.
BIORESOURCE TECHNOLOGY
(2022)
Review
Energy & Fuels
Babak Aghel, Sara Behaein, Falah Alobiad
Summary: Biogas, containing methane, carbon dioxide, and other gases and water, is a significant renewable energy source. Upgrading biogas by removing CO2 using activated carbon adsorption is an effective method. Additionally, recycling agricultural waste and biomass into valuable materials is crucial for the economy and the environment.
Article
Chemistry, Physical
Kawinda Sriyod, Alissara Reungsang, Pensri Plangklang
Summary: The one-step multi-enzyme (OSME) pretreatment was optimized for converting Chlorella sp. biomass to biohydrogen. Under the optimal conditions, a hydrogen yield 39.63% greater than that of untreated biomass was achieved, demonstrating the feasibility of OSME hydrolysis as an efficient conversion method for microalgae biomass.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Agricultural Engineering
Jyoti Rani, Abhishek S. Dhoble
Summary: In this study, the potential of two less explored fungal strains, Trichoderma longibrachiatum (TL) and Pycnoporus sanguineus (PS), in improving the hydrolysis and bioavailability of rice straw in anaerobic digestion (AD) was evaluated. The fungal treatment of rice straw for 10 days by TL and PS increased biogas production and reduced soluble chemical oxygen demand (sCOD). The microbial communities in treated samples showed increased diversity, contributing to better process performance and enhanced resilience against pH fluctuations.
BIORESOURCE TECHNOLOGY
(2023)
Review
Green & Sustainable Science & Technology
Yafan Cai, Zehui Zheng, Franziska Schaefer, Walter Stinner, Xufeng Yuan, Hongliang Wang, Zongjun Cui, Xiaofen Wang
Summary: This review comprehensively analyzes the development, application, and challenges of pretreatment methods for lignocellulosic biomasses (LBs) based on different characteristics in China and Germany. Physical, chemical, and biological pretreatments have their own advantages and disadvantages, and combination pretreatment modes should be explored in future research. The differences in LBs characteristics between China and Germany suggest the need for a comprehensive analysis of pretreatment methods to provide references for other countries with similar substrate characteristics.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Agricultural Engineering
Eirini Zkeri, Athanasia Iliopoulou, Alexandra Katsara, Angeliki Korda, Maria Aloupi, Georgia Gatidou, Michail S. Fountoulakis, Athanasios S. Stasinakis
Summary: Two systems were compared for medium-strength dairy wastewater treatment, with one achieving energy autonomy through a combination of a methanogenic reactor and an aerobic reactor, effectively removing COD, NH4-N, TKN, and PO4-P. The other system, using a reactor and Chlorella sorokiniana, completely removed COD but only partially removed other pollutants.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Sanjay Nagarajan, Vivek V. Ranade
Summary: Anaerobic digestion has the potential to convert sugarcane bagasse into biogas and fertiliser. However, pretreatment is necessary to enhance biogas yields. Previous studies often use milled biomass as substrate, which cannot demonstrate the true effect of pretreatment on biogas production. This study introduces the use of a vortex-based hydrodynamic cavitation device to enhance biomethane yields from fibrous as-received biomass, and provides clear justification for not using milled biomass as substrates to evaluate the effects of pretreatment on biogas production.
BIORESOURCE TECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Laura Vargas-Estrada, Edwin G. Hoyos, P. J. Sebastian, Raul Munoz
Summary: This study investigated the effects of three different nanoparticles on photosynthetic biogas upgrading. Fe2O3 nanoparticles and CACOI nanoparticles showed improved CO2 consumption, biomass productivity, and carbohydrate content under certain concentrations. SiO2 nanoparticles enhanced lipid and carbohydrate production. However, the beneficial effects of nanoparticles were reduced under UV light exposure.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
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
Plant Sciences
Aswathy Udayan, Ashutosh Kumar Pandey, Ranjna Sirohi, Nidhin Sreekumar, Byoung-In Sang, Sung Jun Sim, Sang Hyoun Kim, Ashok Pandey
Summary: In the current global scenario, the world is facing challenges due to population growth, industrialization, and urbanization. This has led to an increased demand for nutrients and renewable energy sources. Microalgae are considered a promising candidate for high-value metabolites and alternative energy sources. However, current cultivation systems for microalgae do not offer feasibility in terms of technology, economics, energy, and environmental sustainability.
PHYTOCHEMISTRY REVIEWS
(2023)
Article
Engineering, Environmental
Choe Earn Choong, So Yeon Yoon, Minhee Kim, Gooyong Lee, Sang-Hyoun Kim, Byong-Hun Jeon, Jaeyoung Choi, Yeomin Yoon, Eun Ha Choi, Min Jang
Summary: Hydrophobic sulfur (S) core-shell-layered nano-zero-valent iron (Fe) (S-nZVI) was prepared for NO3- reduction using a post-sulfidation method with varying Fe/S mass ratios. S(0.125)ZVI (Fe/S = 0.125) showed good N-O cleavage properties due to high electron transfer efficiency and low surface passivation. It exhibited higher selectivity of NO3- reduction toward N-2 than sole nZVI in synthetic and actual NO3- groundwater.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Agricultural Engineering
Tirath Raj, Raj Morya, K. Chandrasekhar, Deepak Kumar, Shveta Soam, Ravindra Kumar, Anil Kumar Patel, Sang-Hyoun Kim
Summary: Microalgae can convert CO2 into carbohydrates, lipids, and proteins, which can be transformed into renewable energy, chemicals, and materials. However, the difficult-to-degrade cell wall and lack of environmentally friendly pretreatment methods hinder the commercialization of microalgal biorefineries. This article discusses the chemical structure and rigidity of microalgae, and summarizes traditional pretreatment methods. Green solvents like ionic liquids, deep eutectic solvents, and natural deep eutectic solvents show promise in selectively extracting components from microalgae. Further research is needed for the deployment of carbon-neutral technologies, including the design of task-specific solvents, understanding their structural activity, and assessing their environmental toxicity and recyclability. Additionally, integrating microalgal industry with biorefineries can improve waste management, sustainability, and revenue.
BIORESOURCE TECHNOLOGY
(2023)
Review
Agricultural Engineering
Ashutosh Kumar Pandey, Jungsu Park, Jeun Ko, Hwan-Hong Joo, Tirath Raj, Lalit Kumar Singh, Noopur Singh, Sang-Hyoun Kim
Summary: Hydrogen can be produced in an environmentally friendly manner using various organic waste and biomass as feedstock. However, the complexity of biological processes limits their predictability and reliability, hindering scale-up and dissemination. This article reviews the use of machine learning in biohydrogen production technology, which has shown promise in modeling and predicting process performance and microbial population dynamics. Further research on machine learning is needed for designing process control tools and understanding the connection between process performance and microbial populations.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Saint Moon Kim, Young -Bo Sim, Jong-Hyun Baik, Jisu Yang, Ashutosh Kumar Pandey, Hwan-Hong Joo, Ju-Hyeong Jung, Sang-Hyoun Kim
Summary: This study achieved high-rate continuous biohydrogen production by forming H2-producing granules in a pilot-scale dynamic membrane bioreactor. The granules improved hydrogen production rate and yield by altering metabolic flux distribution. The low-cost polyester mesh acted as a carrier for granule formation, and the porous structure of the granules facilitated substrate transfer.
CHEMICAL ENGINEERING JOURNAL
(2023)
Editorial Material
Agricultural Engineering
Thallada Bhaskar, S. Venkata Mohan, Siming You, Sang-Hyoun Kim, Luciana Porto de Souza Vandenberghe
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Ashutosh Kumar Pandey, Jungsu Park, Alice Muhorakeye, Raj Morya, Sang-Hyoun Kim
Summary: This study aimed to predict VFAs production from SDBS-pretreated WAS. A lab-scale continuous experiment was conducted at varying HRTs. The highest VFA yield was achieved at an HRT of 2 d, where hydrolysis and acidogenesis showed the highest microbial activities. The ANN model demonstrated high efficiency in learning the relationship between input variables and reactor performance, with satisfactory prediction outcomes.
BIORESOURCE TECHNOLOGY
(2023)
Review
Energy & Fuels
Gayathri Priya Iragavarapu, Syed Shahed Imam, Omprakash Sarkar, Srinivasula Venkata Mohan, Young-Cheol Chang, Motakatla Venkateswar Reddy, Sang-Hyoun Kim, Naresh Kumar Amradi
Summary: To meet the growing energy needs and address the depletion of fossil resources, there is a need to shift from fossil-based feedstocks to organic waste for a competitive, resource-efficient, and low-carbon sustainable economy. Chemical routes for fuel and chemical production have low production costs, but the use of toxic and expensive catalysts make the process unsustainable. Utilizing renewable resources for bioprocessing with a multi-product approach improves resource utilization and contributes to the green economy.
Article
Energy & Fuels
Do-Hyung Kim, Beom-Jung Kang, Sang-Hyoun Kim, Jeong-Hoon Park, Jeong-Jun Yoon
Summary: Adding magnetite (Fe3O4) can reduce the by-products generated from acid hydrolysis of biomass and enhance hydrogen production. This study extracted sugars from Gelidium amansii through acid hydrolysis and evaluated hydrogen production with magnetite supplementation. The addition of magnetite at a concentration of 1.3 g/L or lower increased hydrogen production by 11.4% on average, especially for the main by-product, 5-hydroxymethylfurfural (5-HMF). This strategy could optimize biohydrogen production using Gelidium amansii and reduce detoxification costs.
Article
Biotechnology & Applied Microbiology
Sang Hyun Kim, Hyun Joong Kim, Su Hyun Kim, Hee Ju Jung, Byungchan Kim, Do-Hyun Cho, Jong-Min Jeon, Jeong-Jun Yoon, Sang-Hyoun Kim, Jeong-Hoon Park, Shashi Kant Bhatia, Yung -Hun Yang
Summary: This study identified genes associated with carbon source utilization, electron transfer systems, and hydrogen production systems in Shewanella marisflavi BBL25 through whole-genome sequencing. In addition, introducing the glk gene from S. marisflavi BBL25 into S. oneidensis MR-1 improved glucose consumption. The findings contribute to the understanding of sugar utilization, electron transfer systems, and hydrogen production systems in other Shewanella species.
JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Ranjna Sirohi, V. Vivekanand, Ashutosh Kumar Pandey, Ayon Tarafdar, Mukesh Kumar Awasthi, Amita Shakya, Sang Hyoun Kim, Sang Jun Sim, Hoang A. Tuan, Ashok Pandey
Summary: The transition from fossil fuels to non-conventional sources is necessary for addressing the global energy crisis and environmental issues. Organic waste from various industries can be utilized to produce gaseous fuels through different biochemical strategies. However, current biogas and biohydrogen production practices are inefficient and require interventions to improve biofuel yield. Adding biochar has been shown to enhance gaseous fuel production by adsorbing inhibitors and activating gas-producing microorganisms. This review explores the effect of biochar on gaseous biofuel production and highlights the need for a circular bioeconomy approach.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Agricultural Engineering
Yeelyung Kwon, Jungsu Park, Gi-Beom Kim, Yura Jo, Soyoung Park, Sang-Hyoun Kim
Summary: This study investigates the effects of sludge compositions and organic loading rates (OLRs) on stable biogas production during sludge digestion. The highest average methane production rate of 0.7 L/L & BULL;d is achieved when the OLR, hydraulic retention time, WAS volume fraction, and FOS/TAC ratio are 5.0 g COD/L & BULL;d, 12 days, 0.75, and 0.32, respectively. An increase in OLR promotes bacterial and archaeal abundance and specific methanogenic activity. These results can be applied to the design and operation of sludge digestion for stable, high-rate biogas recovery.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Jungsu Park, Roent Dune A. Cayetano, Yeelyung Kwon, Gi-Beom Kim, Yura Jo, Sang-Hyoun Kim
Summary: This study investigated the application of dynamic membrane and alkaline-thermal pretreatment for sludge digestion with a low hydraulic retention time. The results showed that the pretreatment effectively increased methane production and the abundance of methanogenic archaea, while the dynamic membrane enabled stable sludge digestion. Furthermore, the pretreatment was found to promote the growth of hydrolytic bacteria.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biotechnology & Applied Microbiology
Sang Hyun Kim, Jeong Hyeon Hwang, Hyun Joong Kim, Suk Jin Oh, Hyun Jin Kim, Nara Shin, Sang-Hyoun Kim, Jeong-Hoon Park, Shashi Kant Bhatia, Yung-Hun Yang
Summary: The study developed Clostridium acetobutylicum as a superior biohydrogen producer by introducing glyceraldehyde-3-phosphate dehydrogenase (GAPDH) to enhance hydrogen production. The strain CAC824-G containing gapC showed a 66.3% higher hydrogen production than the wild-type strain, with increased NADH and NADPH pools. Overexpression of gapC resulted in increased hydrogen production even in the presence of inhibitors.
ENZYME AND MICROBIAL TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Raj Morya, Fanirintsoa Herivonona Andrianantenaina, Saurabh Singh, Ashutosh Kumar Pandey, Gi-Beom Kim, Jay Prakash Verma, Gopalakrishnan Kumar, Tirath Raj, Sang-Hyoun Kim
Summary: Due to the high demand for rice as a main food crop, the disposal of rice straw becomes a significant waste management issue in rice-producing countries. Open burning is the most common method but it causes environmental problems. However, utilizing rice straw as a raw material for valuable products can be advantageous. This review highlights the use of rice straw as a crucial source of clean energy.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(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)