Article
Environmental Sciences
Lei Zhang, Yiyang Yuan, Yingdi Zhang, Yang Liu
Summary: This study investigates the feasibility of using calcium hypochlorite (Ca(ClO)(2)) to improve the thermophilic digestion of anaerobic wasted activated sludge (WAS). The results show that Ca(ClO)(2) pretreatment significantly enhances the removal efficiency and methane yield of WAS under low organic loading rate (OLR) conditions. However, the pretreatment effect is not significant under high OLR conditions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Green & Sustainable Science & Technology
Lei Zhang, Pu Yang, Kongyun Zhu, Xinran Ji, Jiao Ma, Lan Mu, Fahim Ullah, Wenxiang Ouyang, Aimin Li
Summary: This study investigates the impact of co-treatment of food waste and sewage sludge on the performance of the integrated system. The results show that there is a synergistic enhancement at the optimal ratio, leading to increased methane production and improved combustion characteristics. Additionally, the co-treatment increases the daily energy output and specific energy output of the full-scale plant.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Green & Sustainable Science & Technology
Archana Paranjpe, Seema Saxena, Pankaj Jain
Summary: In this study, the researchers investigated the co-digestion of food waste (FW) and sewage sludge (SS) using single-stage anaerobic digestion (SSAD) and two-stage anaerobic digestion (TSAD) processes. The results showed that the TSAD process with a FW to SS mass ratio of 60:40 achieved higher biogas production, volatile solid (VS) removal efficiency, and methane (CH4) concentration compared to the SSAD process.
ENERGY FOR SUSTAINABLE DEVELOPMENT
(2023)
Article
Environmental Sciences
Vijayalakshmi Arelli, Naveen Kumar Mamindlapelli, Sameena Begum, Sudharshan Juntupally, Gangagni Rao Anupoju
Summary: Anaerobic co-digestion of food waste and sewage sludge under solid state conditions showed that different mixing ratios are optimal for mesophilic and thermophilic conditions, leading to increased methane yield. Metagenomic analysis revealed that Firmicutes and Bacteroidetes dominate the bacterial communities, with acetotrophic pathway being the major metabolic pathway in the reactors.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Energy & Fuels
Young-Ju Song, Kyung-Su Oh, Beom Lee, Dae-Won Pak, Ji-Hwan Cha, Jun-Gyu Park
Summary: This study determined the optimal mixing ratio of food waste and livestock manure for efficient co-digestion of sewage sludge by applying the BMP test and software simulation. The results showed that a higher mixing ratio of food waste led to a higher methane yield and improved biodegradability. Continuous reactor operation under the optimal mixing ratio resulted in greater organic matter removal and methane yield, improving process stability compared to operations with individual substrates.
Article
Engineering, Environmental
A. Aishwarya Lakshmi, S. Sadarajan
Summary: This study investigates the potential of locust bean gum (LBG) in accelerating the startup of a novel upflow anaerobic sludge blanket (UASB) reactor for municipal sewage treatment. The results show that the reactor with LBG as an additive achieved an accelerated startup in 40 days, with higher COD removal efficiency compared to a conventional system. This confirms the positive impact of LBG on reactor startup.
WATER SCIENCE AND TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Pengzhou Kang, Yuxiu Zhang, Xiaopeng Ge, Zhi Qian
Summary: This study investigated the transformation of nitrogen and sulfur compounds in anaerobic co-digestion (AcoD) and examined changes in microbial community structure and related metabolic functions. The findings revealed that H2S was the predominant form of sulfur initially, which was later converted into SO42- and SO32-. NH3 and NH4+ were the primary forms of nitrogen during AcoD. Bacterial diversity was closely associated with nitrogen and sulfur compounds, with different functional compositions related to N and S metabolism observed after the AcoD process.
Article
Environmental Sciences
Wai Lin Cheong, Yi Jing Chan, Timm Joyce Tiong, Woon Chan Chong, Worapon Kiatkittipong, Kunlanan Kiatkittipong, Mardawani Mohamad, Hanita Daud, I. Wayan Koko Suryawan, Mega Mutiara Sari, Jun Wei Lim
Summary: The aim of this study was to develop a simulation model of anaerobic co-digestion of food waste and sewage sludge for biogas production. The results showed the optimal parameters for methane yield, COD removal efficiency, and VS removal efficiency. Economic analysis indicated that the study is feasible and economically viable.
Article
Biotechnology & Applied Microbiology
Chandan Mahata, Suman Dhar, Subhabrata Ray, Debabrata Das
Summary: The performance of the upflow anaerobic sludge blanket (UASB) reactor for stable H2 production from starchy wastewater supplemented with groundnut de-oiled cake using mixed consortia was investigated in this study. Limited research on H2 production for UASB reactor has been reported. The operation of the UASB reactor was divided into start-up period and production period, with different hydraulic retention times (HRT) examined for H2 production. The maximum H2 production rate of 12.3 L L-1 d-1 was observed at 3 h HRT. Physicochemical characteristics of the granular sludge were studied, and advanced bio-kinetic models were implemented to analyze the substrate consumption on hydrogen production.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Green & Sustainable Science & Technology
Ying Zhou, Shuohui Shi, Jiong Zhou, Lei He, Xuejie He, Yang Lu, Qiang He, Jian Zhou
Summary: This study investigated the composition and transformation mechanism of dissolved organic matters (DOMs) in real co-digestion wastewater. The results showed that the wastewater mainly contained low molecular weight organics and the hydrolytic/acidogenic process and two-stage anaerobic/aerobic process played important roles in the conversion and removal of organic matters. However, the ultrafiltration unit had limited effectiveness in removing refractory organics, leading to the presence of residual DOMs in the effluent.
Article
Green & Sustainable Science & Technology
Wenxu Lu, Guanyong Deng, Xiaoge Cheng, Wan Wang
Summary: This study investigated the effect of iron-loaded biochar (Fe-BC) on anaerobic co-digestion systems comprising food waste and sewage sludge. The findings showed that Fe-BC promoted methanogenesis by reducing the accumulation of VFAs and improving the buffer capacity and substrate-to-biogas conversion efficiency.
Review
Agriculture, Multidisciplinary
Francesca Bandini, Eren Taskin, Gabriele Bellotti, Filippo Vaccari, Chiara Misci, Maria Chiara Guerrieri, Pier Sandro Cocconcelli, Edoardo Puglisi
Summary: The fragmentation of plastics into micro- and nano-particles (MPs and NPs) is a global concern due to their widespread presence in terrestrial and marine environments. Current research has mainly focused on aquatic ecosystems and has neglected the fragmentation of bioplastics into micro- and nano-particles (MBPs and NBPs). The distribution, concentration, fate, and major sources of MPs, NPs, MBPs, and NBPs in agroecosystems still require further understanding.
CHEMICAL AND BIOLOGICAL TECHNOLOGIES IN AGRICULTURE
(2022)
Article
Green & Sustainable Science & Technology
Hui Mu, Qingyu Sun, Meng Zhong, Chunhui Zhao, Yongfang Zhang, Liguo Wang
Summary: This study investigates the use of oyster shells as a conditioner to improve the efficiency and methane recovery of the up-flow anaerobic sludge blanket (UASB) reactor for treating starch wastewater. Results show that the UASB reactor with oyster shell conditioning significantly increases methane production compared to the control reactor, surpassing the majority of previously reported methane yields. pH adjustment and additional supply of carbon dioxide from oyster shells are primarily responsible for this increase. Oyster shell conditioning also improves specific methanogenic activity, protection of extracellular polymeric substances, settling capacity of anaerobic granular sludge, and enrichment in Methanosaeta abundance, enhancing methanogenic functional activity. These findings demonstrate the potential of oyster shells as a favorable conditioner for optimizing UASB treatment of easily acidified wastewater.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Energy & Fuels
Valderi D. Leite, Railson O. Ramos, Paula M. U. Silva, Wilton S. Lopes, Jose T. Sousa
Summary: This study investigated the hydrolysis of carbonaceous and nitrogenous materials in the anaerobic co-digestion process of solid vegetable waste and anaerobic sewage sludge using zero-, first-, and second-order pseudo-kinetic models. The digestion of CODP and subsequent conversion to CODF was found to occur in two stages, with significant differences in the kinetic constants. A simplified kinetic model based on a first-order differential equation was proposed, which showed excellent calibration and validation parameters.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Green & Sustainable Science & Technology
C. Fernando-Foncillas, C. Varrone
Summary: This study focused on co-fermenting sewage sludge and food waste to produce carboxylic acids, particularly hexanoic acid, with optimal operating conditions determined through experimental design and statistical optimization. Continuous fermentation experiments showed higher carboxylate titer and favored chain elongation compared to batch mode.
JOURNAL OF CLEANER PRODUCTION
(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)
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)
Article
Energy & Fuels
Hwijin Seo, Anna Joicy, Myoung Eun Lee, Chaeyoung Rhee, Seung Gu Shin, Si-Kyung Cho, Yongtae Ahn
Summary: Ultrasound and combined alkaline-ultrasound pretreatment (AUP) shown effective for disintegration of primary sewage sludge, and the degree of solubilization (DS) was evaluated. The pretreated primary SS then used in microbial electrolysis cells (MECs) to maximize methane production. The AUP achieved the highest DS of 67.2% and MEC reactors operated with the AUP achieved the highest methane production (240 +/- 6.4 mL g VSin-1). The AUP strategy could enhance anaerobic digestion performance and provide an economical way for treating primary SS.
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)
