Article
Engineering, Environmental
Somdipta Bagchi, Manaswini Behera
Summary: The study shows that the addition of chloroform can effectively suppress methane production in MFCs and improve the performance of the cells. MFCs with chloroform dosages exhibited higher open circuit voltages, peak power densities, lower internal resistance, and higher coulombic efficiencies compared to the control reactors.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Green & Sustainable Science & Technology
Mostafa Ghasemi, Mehdi Sedighi, Yie Hua Tan
Summary: In this study, CNT/Pt nanocomposites were synthesized as a cathode catalyst for MFCs, showing improved efficiency in wastewater treatment and energy production. The nanocomposite with a concentration of 0.3 mg/cm² exhibited the best performance in terms of CE, internal resistance, COD removal, and power generation, highlighting its potential for sustainable clean energy production.
Article
Environmental Sciences
Vijay Jaswal, Yogalakshmi Kadapakkam Nandabalan
Summary: The present study prepared rice husk derived silicon nanoparticles using rice husk as a source of silica and demonstrated its effectiveness as an anode modifier in a two-chambered H-shaped microbial fuel cell (MFC). The synthesized silicon nanoparticles had a spherical shape and ranged in size from 15 to 60 nm. The anode modified with silicon nanoparticles of 0.50 mg cm-2 showed a significant increase in power and current density compared to the control, and also exhibited high COD removal and coulombic efficiency in MFCs operated with combined distillery and domestic wastewater.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Somdipta Bagchi, Rudra Narayan Sahoo, Manaswini Behera
Summary: This study utilized sodium nitrate as a methanogenic suppressor to enhance the power density and coulombic efficiency of MFC during the treatment of rice mill wastewater. By mixing anaerobic sewage sludge with sodium nitrate, a significant reduction in specific methanogenic activity was observed. Despite the lower removal efficiency of COD and phenol in MFCT compared to MFCC due to the inhibition of methanogens, a considerable increase in substrate conversion to electricity was achieved.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Hirra Zafar, Sadia Ishaq, Nicolas Peleato, Deborah Roberts
Summary: This study conducts a meta-analysis to examine the impact of design and operating factors on the performance of microbial fuel cells (MFCs). The results indicate that dual-chamber MFCs generally achieve higher COD removal and coulombic efficiencies compared to single-chamber MFCs. MFCs using a solid operating phase also show higher coulombic efficiencies than those using a liquid operating phase. Furthermore, brush anodes are found to have higher power density than flat surface anodes. The use of a platinum catalyst improves power density, while coulombic efficiency is more dependent on the presence of a membrane separator.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Multidisciplinary Sciences
Million Ebba Bote
Summary: Electrocoagulation is an electrochemical method that uses sacrificial electrodes to treat wastewater. The combination of aluminum and iron electrodes influences the removal efficiency of COD, with Al-Fe and Fe-Al combinations showing promising results. Various factors such as pH, reaction time, and current density play a role in determining the overall efficiency of COD removal.
Article
Engineering, Environmental
Sumaya Sarmin, Mostafa Tarek, Chin Kui Cheng, Selvaraj Mohana Roopan, Md Maksudur Rahman Khan
Summary: This study explored the potential of integrating microbial fuel cells with a photocatalytic reactor for wastewater treatment and power generation. By using different substrates and biocatalysts, it was possible to achieve efficient removal of chemical pollutants and increase power generation. Additionally, further treatment of the MFC anolyte in a photocatalytic reactor under visible light irradiation can lead to higher removal efficiencies.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
Roya Morovati, Mohammad Hoseini, Abooalfazl Azhdarpoor, Mansooreh Dehghani, Mohammad Ali Baghapour, Saeed Yousefinejad
Summary: Coating the anode with MnCo2O4 can improve the efficiency of microbial fuel cells (MFC), increase the removal of chemical oxygen demand (COD) and diclofenac (DCF), and enhance power density.
Article
Agricultural Engineering
Morgane Hoareau, Benjamin Erable, Olivier Chapleur, Cedric Midoux, Chrystelle Bureau, Anne Goubet, Alain Bergel
Summary: Microbial electrodes were utilized in domestic wastewaters for oxidation and reduction reactions, leading to enhanced efficiency. The rich diversity within the biofilm taxa contributed to the observed efficiency and robustness of the system.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Environmental
John Solomon, Vaidhegi Kugarajah, Paechimuthu Ganesan, Sangeetha Dharmalingam
Summary: This study focuses on using Microbial Fuel Cell (MFC) to provide power to sensors or environmental monitoring devices at remote locations. By incorporating capric acid as a Phase Change Material (PCM), the study achieved improved MFC performance and maintained optimum temperature.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Kavya Arun Dwivedi, Vicky Kumar, Chin-Tsan Wang, Wen Tong Chong, Hwai Chyuan Ong
Summary: A novel type of swirler channel was implemented in a dual-chamber batch mode microbial fuel cell, and its effect on performance was compared with a system without swirler. Experimental results showed that the swirler system achieved higher current density, power density, and reduced internal resistance, indicating its significant impact on the performance of microbial fuel cells.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Physical
Xueli Zhang, Zhiyuan Lin, Bolong Liang, Ming Zhong, Mingtao Zhang, Kexun Li, Hao Wang, Cuicui Lv
Summary: A method of preparing porous iron-nitrogen-doped carbon nanospheres using an inexpensive zinc-iron Prussian blue analogue as the precursor was proposed in this study, which significantly improves the performance of activated carbon air-cathode microbial fuel cells.
JOURNAL OF POWER SOURCES
(2021)
Article
Biochemistry & Molecular Biology
Raoof Rabiee, Seyed Morteza Zamir, Mahsa Sedighi
Summary: This study assessed the performance of a three-chamber microbial desalination cell (MDC) in removing salt and degrading phenol. The use of a bio-cathode in the MDC significantly improved power density, desalination efficiency, and COD removal. The bio-cathode also effectively degraded phenol within 7 hours. These findings highlight the potential of bio-cathodes in enhancing MDC performance for the degradation of hazardous compounds.
BIOELECTROCHEMISTRY
(2022)
Article
Agricultural Engineering
N'dah Joel Koffi, Satoshi Okabe
Summary: This study found that maintaining the air-cathode potential at +0.7 V vs. SHE in single-chamber air-cathode microbial fuel cells can enhance current generation, oxygen permeation, and NH4+-N and TN removal rates.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Environmental
Jian Yu, Juping You, Piet N. L. Lens, Lichao Lu, Yaxue He, Zhenyi Ji, Jianmeng Chen, Zhuowei Cheng, Dongzhi Chen
Summary: By introducing silicone oil into microbial fuel cells (MFC) as a non-aqueous phase (NAP) medium, a two-phase partitioning microbial fuel cell (TPPMFC) was constructed to enhance the mass transfer of hydrophobic volatile organic sulfur compounds (VOSCs). The removal efficiency of propanethiol (PT) in TPPMFC increased by 11-20% compared to single-phase MFC, and the coulombic efficiency of TPPMFC was 4.32-2.68 times higher. The addition of NAP improved the content of outer membrane cytochrome-c and NADH dehydrogenase activity, and upregulated genes related to sulfur metabolism, energy generation, and amino acid synthesis.
Article
Engineering, Chemical
Yuan He, Liangjie Wang, Zhan Chen, Xia Huang, Xiaomao Wang, Xiaoyuan Zhang, Xianghua Wen
Summary: In this study, novel catalytic ceramic membranes were fabricated by in situ embedding MnMe oxide (Me = Fe, Co, Ce) on the surface and inside micropores of membranes through redox reaction. The synergistic effect of membrane filtration and catalytic ozonation towards atrazine degradation was evaluated, and MnCe-CM showed the best performance with 99.99% atrazine removal in 40 minutes. The optimized operating conditions of MnCe-CM were determined as ozone concentration of 0.8 mg/min and pH 7. Catalytic ozonation took place both on the surface and inside micropores of MnCe-CM, and the reactions were proven to be effective due to the sufficient reaction sites provided by high specific surface and the facilitated contact between center dot OH and the reactants in the confined space. Atrazine degradation pathways were proposed based on the identified byproducts, and the reaction sites and biotoxicity evaluation were calculated using density function theory (DFT) and Toxicity Estimation Software Tool (T.E.S.T), respectively. This study presents a novel MnCe-CM with dual functions of filtration and catalytic ozonation, highlighting the synergistic effect of separation and catalytic ozonation.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Environmental Sciences
Lisheng Wang, Wancong Gu, Yanchen Liu, Peng Liang, Xiaoyuan Zhang, Xia Huang
Summary: This paper summarizes the challenges and solutions of mainstream anammox-based process by reviewing the literature of the past decade. The slow growth rate of anammox bacteria and the need for enhancing bacteria retention are identified as the main challenges. Various methods to culture anammox bacteria and improve their activity are discussed. Other challenges include the elimination of nitrite oxidizing bacteria (NOB) and achieving the ideal ratio of NH4+ and NO2-. To overcome these challenges, composite control strategies based on low sludge retention time (SRT) and limited aeration are suggested. Interference from low temperature and influent components in actual wastewater treatment is addressed, as well as the use of coupling processes to reduce nitrate concentration in the effluent. The paper concludes with future prospects for the mainstream anammox-based process.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Shuning Chen, Tengfei Ren, Xiaoying Zhang, Zuoyong Zhou, Xia Huang, Xiaoyuan Zhang
Summary: In this study, Mn-loaded C-SiO2-Framework (Mn-CSF) was proposed for efficient catalytic ozonation. The results showed that Mn-CSF exhibited significantly enhanced catalytic activity compared to Mn-SiO2 and pristine CSF. Mn-CSF also proved to be effective in gasification wastewater treatment. Additionally, Mn-CSF catalytic ozonation showed better removal of fulvic-like and protein-like components compared to ozonation. The study provided evidence of the relationship between catalyst structure and heterogeneous catalytic ozonation efficiency.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Dandan Liang, Zeng Li, Guohong Liu, Chao Li, Weihua He, Jiannan Li, Yujie Feng
Summary: Periodic polarity reversal strategy can effectively cultivate bidirectional electron transfer biofilm and utilize the characteristics of biofilm to facilitate nitrate reduction.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Mengxi Yin, Tengfei Ren, Ting Xu, Boya Fu, Xiaoxin Cao, Xia Huang, Xiaoyuan Zhang
Summary: Bioelectrochemical systems (BESs) hold promise for self-sustaining energy recovery of wastewater. In this study, a dual regulation strategy involving solvent mediation and zinc fencing was proposed to enhance the oxygen reduction reaction (ORR) process in BESs. The optimized cathode catalyst, Co-1/20@NPC, demonstrated outstanding ORR activity, high bioelectricity generation, and operation stability, making it a prospective catalyst for wastewater energy recovery in BESs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Shuai Luo, Xianzheng Zhu, Boya Fu, Fubin Liu, Lequn Sun, Kai He, Heng Yang, Xiaoyuan Zhang, Xia Huang
Summary: This work achieved nitrogen recovery from wastewater treatment by utilizing a bioelectrochemical system with the concept of biohythane generation. The use of a 3D network electrode improved biohythane generation and reduced energy consumption for nitrogen recovery, achieving a high biohythane production rate at 0.123 m3 m-3 treated wastewater with an energy consumption of 0.77 kWh kg-1 N under 0.8 V, which was significantly lower than traditional technologies. Microbial analysis showed that a voltage of 0.8 V favored the growth of Geobacter for higher energy recovery, and the genera of Bacteroides and Azospirillum were identified as key species. This study demonstrated that the biohythane generation concept could greatly reduce energy consumption for nitrogen recovery in wastewater treatment.
RESOURCES CONSERVATION AND RECYCLING
(2023)
Article
Engineering, Environmental
Shuning Chen, Tengfei Ren, Kechao Lu, Changpei Ouyang, Xia Huang, Xiaoyuan Zhang
Summary: Heterogeneous catalytic ozonation (HCO) is a powerful technique for wastewater treatment, and the active sites of catalysts can be adjusted to remove organics. Nonradical pathways, such as 1O2 pathway and intra-electron-transfer pathway, provide a promising solution for electron-rich organics degradation. In this study, MnNx loaded Carbon-Silica-Framework (MnNx-CSF) was proposed as an efficient catalyst to selectively remove electron-rich organics through HCO. The study provides new insights for catalytic ozonation of electron-rich organics through 1O2 pathway and intra-electron-transfer pathway.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Tengfei Ren, Mengxi Yin, Shuning Chen, Changpei Ouyang, Xia Huang, Xiaoyuan Zhang
Summary: Nonradical oxidation is a promising pathway for the degradation of organic pollutants in heterogeneous catalytic ozonation. This study proposes a new process based on single-atom iron catalysts, which exhibit outstanding catalytic ozonation activity and stability. The nonradical pathways based on surface-adsorbed atomic oxygen and singlet oxygen were identified, and substrate-dependent behavior was observed. Density functional theory calculations and molecular dynamics simulations revealed the mechanism behind nonradical generation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Ting Xu, Yifan Gao, Ni Yan, Boya Fu, Mengxi Yin, Xia Huang, Chengwen Wang, Xiaoyuan Zhang
Summary: Bioelectrochemical systems (BESs) are capable of recovering energy and resources from wastewater. We developed an iron-doped carbon fiber membrane (Fe-CFM) anode with stable and uniform iron oxide distribution to enhance electron transfer and microbial adhesion. This Fe-CFM anode exhibited significantly improved electron transfer, achieving excellent energy conversion in BES with a maximum power density and current density higher than that of commercial carbon fiber cloth anodes. The appropriate iron content greatly enhanced electricity generation in wastewater energy conversion.
RESOURCES CONSERVATION AND RECYCLING
(2023)
Article
Engineering, Environmental
Shuning Chen, Tengfei Ren, Zuoyong Zhou, Kechao Lu, Xia Huang, Xiaoyuan Zhang
Summary: This study focuses on the synthesis of easily separable Mn loaded carbon-silica-membrane (Mn-CSM) and the construction of a packed bed reactor for catalytic ozonation. The Mn-CSM exhibits excellent catalytic activity for refractory organic degradation, making it a promising technology for advanced wastewater treatment. Additionally, the introduction of SiO2 nanoparticles enhances the catalytic stability and fluid flow distribution of Mn-CSM.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Mengxi Yin, Boya Fu, Tengfei Ren, Mingwei Wang, Xiaoxin Cao, Xia Huang, Xiaoyuan Zhang
Summary: This study proposes a biomimetic Fe-Nx incorporated carbon membrane (Fe-NCM) as an anode in BESs, which mimics the active center of heme and enhances the efficiency of wastewater treatment and energy conversion. The Fe-NCM anode exhibits good biocompatibility and electrochemical activity, facilitating microbe adhesion and biotic-abiotic interfacial interaction, leading to higher power output and COD removal rate in BESs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Mingwei Wang, Tengfei Ren, Mengxi Yin, Kechao Lu, Hui Xu, Xia Huang, Xiaoyuan Zhang
Summary: In this study, a binary electroactive material with pseudocapacitance/conductance was designed to store-release electrons and enhance direct electron transfer between acid-producing bacteria and methanogens in anaerobic wastewater treatment. The pseudocapacitance of the material promoted ATP synthesis and provided energy for organic decomposition, while the conductance facilitated direct interspecies electron transfer and improved methane production. The material also helped buffer excess electrons and alleviate pH drop. These findings provide a strategy to enhance electron transfer in anaerobic treatment and guide the design of electroactive materials.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Kechao Lu, Tengfei Ren, Ni Yan, Xia Huang, Xiaoyuan Zhang
Summary: This study revealed that the trade-off between reaction inhibition and mass transfer enhancement induced by salinity can affect the degradation pattern of pollutants during continuous aeration. This provides a new theoretical perspective on the role of salinity in heterogeneous catalytic ozonation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Yifan Gao, Shuai Liang, Biming Liu, Chengxu Jiang, Chenyang Xu, Xiaoyuan Zhang, Peng Liang, Menachem Elimelech, Xia Huang
Summary: Researchers have proposed a facile and highly controllable thermal tuning strategy that enables fine control of nanodefects in electrocatalysts. This strategy endows common carbon materials with record high efficiency in electrocatalytic degradation of pollutants.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Jiannan Li, Guohong Liu, Dahong Chen, Chao Li, Dandan Liang, Fei Wang, Jing Wu, Weihua He, Yanling Yu, Yujie Feng
Summary: The microbial electrochemical system (MES) is a new approach for recovering and utilizing energy from wastewater. By integrating a metal current collector into the anode and increasing its branches, power loss can be reduced and system performance can be enhanced. Simulation results suggest that at least three current collector branches should be integrated into the anode in a scale-up MES.
ACS ES&T ENGINEERING
(2022)
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)
