Article
Engineering, Environmental
Lalise Wadajo Negassa, Majid Mohiuddin, Girum Ayalneh Tiruye
Summary: Locally isolated microorganisms from brewery waste sludge were demonstrated to show efficient treatment of brewery wastewater and generation of sustainable and clean energy through simultaneous production of bioelectricity.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
Baiming Ren, Tongyue Wang, Yaqian Zhao
Summary: A newly developed alum sludge-based hybrid constructed wetland-microbial fuel cell system was used for swine wastewater treatment and electricity generation. The system showed high removal efficiency and power generation, with the first stage playing a major role in both pollutant removal and electricity production.
Article
Green & Sustainable Science & Technology
Ozlem Demir, Elif Gumus
Summary: In this study, the sludge treatment and electricity generation in microbial fuel cell were investigated based on the high organic content of sludge. The hydrolysis step of anaerobic digestion was accelerated using pre-treatment methods such as Fenton and thermal/alkaline. It was found that the pre-treated sludge in microbial fuel cells showed improved removal efficiencies of chemical oxygen demand and organic matter as compared to raw sludge. The current densities also significantly increased in the pre-treated sludge-fed microbial fuel cells.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2023)
Review
Environmental Sciences
Kavya Arun Dwivedi, Song-Jeng Huang, Chin-Tsan Wang
Summary: The conflict between climate change and growing global energy demand presents a significant sustainability challenge, with microbial fuel cells (MFCs) showing promise in simultaneous wastewater treatment and power production. However, reducing the economic challenges related to manufacturing and operation costs is essential for successful implementation. Integration of MFC technology with various recent technologies holds potential for advanced sustainable MFC technology, but further research is needed to overcome challenges and commercialize hybrid MFC systems.
Review
Environmental Sciences
Abdul Sattar Jatoi, Faheem Akhter, Shaukat Ali Mazari, Nizamuddin Sabzoi, Shaheen Aziz, Suhail Ahmed Soomro, Nabisab Mujawar Mubarak, Humair Baloch, Abdul Qayoom Memon, Shoaib Ahmed
Summary: Microbial fuel cells (MFCs) are a promising approach for generating cleaner and more sustainable electrical energy, with potential for both wastewater treatment and energy generation. Utilizing MFCs in conjunction with nanomaterials could offer a novel solution to waste and energy-related issues.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Hsu Htet Htet, Rujira Dolphen, Kamon Jirasereeamornkul, Paitip Thiravetyan
Summary: Constructed wetlands (CWs) and microbial fuel cells (MFCs) were combined to evaluate their performance in domestic wastewater treatment and electricity generation. The parallel connection of CW-MFCs improved power generation and using three copper wires to connect electrodes enhanced pollutant capture capabilities. The single-column system achieved the highest power density, followed closely by the triple-column continuous system. The zigzag system showed lower power density but had higher removal efficiency of pollutants.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Lingjun Wang, Yanfeng Tai, Xin Zhao, Qinqin He, Zhenzhen Hu, Min Li
Summary: In this study, a dual chamber microbial fuel cell (MFC) was constructed to directly recover phosphorus from sewage sludge and produce a valuable product of vivianite. The results showed a 99.08% recovery efficiency for dissolved phosphorus and the production of approximately 2.33 mg/g of vivianite. The best recovery efficiency was achieved at an initial catholyte pH of 7 and Fe/P molar ratio of 1.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Nurul Najwa Adam Malik, Muhammad Najib Ikmal Mohd Sabri, Husnul Azan Tajarudin, Noor Fazliani Shoparwe, Hafiza Shukor, Muaz Mohd Zaini Makhtar, Syed Zaghum Abbas, Yang-Chun Yong, Mohd Rafatullah
Summary: This project studied the performance of an ML-MFC supplemented with sludge and chicken manure, and optimized its operating parameters using response surface methodology (RSM) through central composite design (CCD). The determined optimum operating parameters were 35 degrees C, 75% moisture content, and an electrode distance of 3 cm. The study achieved a high power density, COD removal efficiency, and biomass.
Article
Chemistry, Physical
Nurhazirah Mohd Azmi, Muhammad Najib Ikmal Mohd Sabri, Husnul Azan Tajarudin, Noor Fazliani Shoparwe, Muaz Mohd Zaini Makhtar, Hafiza Shukor, Mahboob Alam, Masoom Raza Siddiqui, Mohd Rafatullah
Summary: This study investigated the effect of different pretreatment methods on the performance of a membrane-less microbial fuel cell (ML-MFC) and optimized its performance using statistical response surface methodology. The study demonstrated that, under specific pretreatment conditions, high COD removal efficiency, biomass, and power density can be achieved.
Article
Chemistry, Physical
Chengzhi Wang, Yi Xing, Kangning Zhang, Huizi Zheng, Ya-nan Zhang, Xiaolin Zhu, Xing Yuan, Jiao Qu
Summary: A photocathode-microbial electrochemical coupling system (PC-MFC) using black phosphorus-doped titanium dioxide nanobelt (BP/TB) as a photocatalyst was constructed to degrade hydroxychloroquine (HCQ, used to treat COVID-19). The degradation efficiency of HCQ (100 mg/L) in the coupling system reached 73.7% within 8 hours, higher than photocatalysis (69.5%), MFC (25.6%), and adsorption (9.6%). The PC-MFC achieved complete degradation of HCQ (100 mg/L) within 96 hours, significantly higher than the MFC (51.1%).
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Xiao-Li Yang, Tao Li, Yang-Guang Xia, Rajendra Prasad Singh, Hai-Liang Song, Heng Zhang, Ya-Wen Wang
Summary: This study investigated the performance of an ecological floating bed-microbial fuel cell (EFB-MFC) coupled system for electricity generation and nitrogen removal. Results showed that introducing plants into the MFC system reduced resistance and increased voltage, while also improving NH4+-N and TN removal efficiency. Water spinach system showed the best performance, but rotten roots of windmill grass released extra NH4+-N which impaired nitrogen removal. Radial oxygen loss and root exudates played significant roles in enhancing electricity generation and nitrogen removal. Electrical stimulation of enzyme activity related to nitrogen removal and migration of NH4+-N contributed to enhancing nitrogen removal.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Chemical
Yangfan Song, Xinxin Wang, Yaling Liu, Hongwei Chen, Chao Zhao, Libin Liu, Hejia Jiang, Lou Zhu, Tianchao Ai
Summary: A novel type of pulsed anaerobic fluidized bed microbial fuel cell (PAFB-MFC) was studied, which showed better electrochemical performance and shorter wastewater treatment time compared to the conventional anaerobic fluidized bed microbial fuel cell (AFB-MFC).
Article
Environmental Sciences
Anina James
Summary: Microbial fuel cell (MFC) is a bio-electrochemical system that uses electrogenic bacteria to generate electricity. By utilizing wastewater as feed, MFC can generate clean electricity while treating the wastewater. However, there are challenges in scalability and commercialization of this technology, which can be overcome by the use of ceramics. Ceramics can provide chemical and structural stability as separators, chassis, or electrodes in MFCs, and they are low-cost, eco-friendly, and readily available.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Ghada Mohamed Aleid, Anoud Saud Alshammari, Asma D. Alomari, Akil Ahmad, Omaymah Alaysuy, Mohamad Nasir Mohamad Ibrahim
Summary: The benthic microbial fuel cell (BMFC) is an efficient bioelectrochemical fuel cell system. Researchers have explored the use of local bakery waste and lignocellulosic biomass material to overcome challenges and improve the feasibility of the technique at a pilot scale. Results showed high power density and degradation efficiency of metal ions under optimized parameters.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Huimin Wang, Xiaoyan Qi, Siyu Chen, Xia Wang
Summary: In this study, breeding wastewater was efficiently treated using an electroactive microbial community screened from the native microorganisms of the wastewater in microbial fuel cells. The results showed good power generation and high pollutants removal efficiency. The morphology characterization demonstrated the formation of a thick biofilm by the screened electroactive microbial community. Microbial community analysis revealed an increase in microorganisms associated with electricity generation and pollutant degradation, while pathogenic microorganisms were greatly decreased. These findings suggest that the MFC constructed using the screened electroactive microbial community can be a sustainable method for breeding wastewater treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Victor Pertegal, Engracia Lacasa, Pablo Canizares, Manuel A. Rodrigo, Cristina Saez
Summary: The composition and concentration of airborne microorganisms in hospital indoor air exceed recommendations from WHO. Improving air-conditioning designs can help restrict hospital-acquired infections. Different bioaerosol sources significantly influence airborne bacteria concentrations, and ventilation airflow affects bioaerosol distribution.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Chemical
Andrea N. Arias, Inalmar D. Barbosa Segundo, Elisama V. dos Santos, C. A. Martinez-Huitle, Justo Lobato, Manuel A. Rodrigo
Summary: This work demonstrates that treating hydrogen sulphide in gas phase using an electrochemical cell equipped with a MEA is a feasible option, as it efficiently transforms the pollutant into solid sulphur and sulfuric oxide. The current density and gas flowrate have significant effects on the removal of hydrogen sulphide and the formation of different species. Electrochemical characterization shows that the MEA does not deteriorate during continuous operation tests and the energy consumption for H2S removal ranges from 18 to 87 Wh gS-1.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Paulo Jorge Marques Cordeiro-Junior, Marcos Roberto de Vasconcelos Lanza, Manuel Andres Rodrigo Rodrigo
Summary: This study evaluates the electrosynthesis of hydrogen peroxide from the oxygen reduction reaction using a flow-by electrochemical cell under different operation conditions and electrodes. A phenomenological model is proposed to understand the processes inside the electrochemical reactor and the influence of predatory species on H2O2 production at high concentrations. Comparing different anodes, DSA-Cl2 is found to be twice as efficient as BDD, allowing for concentrations as high as 4.2 g L-1. The decomposition of H2O2 is influenced by the electrochemical processes of predatory species such as ozone and peroxymonopersulfate.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Rayane Cardoso, Daniel Muniz, Caroline Lucena Matos, Julia Caliman, Jose J. Linares
Summary: The study combines activated carbon adsorption and electrochemical regeneration/caffeine degradation and applies it to caffeine treatment. The activated carbon is characterized and the caffeine adsorption capacity is estimated. The influence of operating parameters on caffeine treatment is also analyzed. Under the conditions of activated carbon fluidization, NaCl as the electrolyte, and a current density of 0.5 A, a regeneration efficiency of 87% can be achieved. Intermediates formed during the electrochemical regeneration are also identified.
Article
Electrochemistry
Fernando M. de L. Amorim, Rudy Crisafulli, Jose J. Linares
Summary: This study presents a new alkaline-acidic ethanol electroreformer that can simultaneously produce hydrogen and electricity. The electroreformer utilizes a pH gradient between alkaline anolyte and acidic catholyte, separated by a Nafion(R) 211 membrane, to generate an extra electromotive force. The electroreformer achieves a maximum power density of 23 mW cm-2 at 70 degrees C.
ELECTROCHEMISTRY COMMUNICATIONS
(2023)
Article
Electrochemistry
J. Fernandez-Cascan, J. Isidro, J. Guadano, C. Saez, M. A. Rodrigo
Summary: The study evaluates and validates the electrokinetic transport of pollutants from polluted to clean soil at different temperatures using a simple transport model. Real samples contaminated with residues from lindane production are utilized. The results show negligible dragging of aged pollutants, low electro-osmotic fluxes, and insignificant pollutant accumulation in electrolyte wells. However, there is significant volatilization of chlorinated organic compounds (COCs), which accumulate in the mockup walls and pipes. The results align well with a 1-D non-reactive model, and the diffusion coefficients of COCs are independent of chlorine substitutions.
ELECTROCHIMICA ACTA
(2023)
Article
Electrochemistry
Rafael Granados-Fernandez, Miguel A. Montiel, Andrea N. Arias, Carmen M. Fernandez-Marchante, Justo Lobato, Manuel A. Rodrigo
Summary: This study evaluates the performance of a novel integrated electrochemically assisted absorption reactor. The reactor combines a PEM cell and a packed absorption column into a one compartment device to maximize the oxidation of gaseous pollutants. 3D printing technology was used to create the device. The results show that this technology can prevent ozone wastage and achieve high efficiencies in removing benzene, a model VOC. Furthermore, it sheds light on benzene absorption and degradation mechanisms and the effect of current density on process efficiency.
ELECTROCHIMICA ACTA
(2023)
Article
Environmental Sciences
P. Verlicchi, V. Grillini, E. Lacasa, E. Archer, P. Krzeminski, A. I. Gomes, V. J. P. Vilar, M. A. Rodrigo, J. Gabler, L. Schafer
Summary: Organic and microbial contaminants of emerging concern (CECs) are a major concern in reclaimed water reuse projects. This study presents a new methodology for selecting representative CECs and evaluating the performance of a polishing treatment. It includes criteria such as occurrence, persistence, bioaccumulation, and toxicity to rank and select the most representative CECs.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Physical
Alecio Rodrigues Nunes, Jose J. Linares, Rudy Crisafulli, Sabrina C. Zignani, Flavio Colmati
Summary: In this study, bimetallic Pt3Eu/C, Pt3La/C, and Pt3Ce/C electrocatalysts were prepared and characterized for ethanol electro-oxidation. The results showed that the addition of rare earth metals in the form of oxides reduced the onset potential, increased the current density, and enhanced the stability. Furthermore, the presence of rare earth metals in the oxidized form increased the percentage of acetic acid as the final product, making the electrocatalysts more selective and efficient than Pt/C.
Review
Chemistry, Physical
Elisama Vieira dos Santos, Carlos A. Martinez-Huitle, Manuel A. Rodrigo
Summary: In recent years, efforts have been made to improve the sustainability of both industrial and environmental processes. The circular economy theory and life cycle assessment tools have led to innovative approaches in electrochemically assisted waste remediation technologies. This opinion-critical review summarizes the recent advancements in the new electro-refinery concept for organic wastes, which aims to obtain valuable compounds or molecules from pollutants instead of simply mineralizing them.
CURRENT OPINION IN ELECTROCHEMISTRY
(2023)
Article
Electrochemistry
Erica de M. Pereira, Flavio Colmati, Artur M. Amorim, Fernando F. Sodre, Jose J. Linares
Summary: One challenge in removing emerging contaminants is the low concentrations in the environment, which reduces efficiency. To overcome this, a pre-concentration step and contaminant degradation can be applied. This study demonstrates the use of activated carbon adsorption and anodic oxidation for the treatment of GLY-contaminated wastewater.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Engineering, Chemical
Aline R. Doria, Angela Moratalla, Caio V. S. Almeida, Ronaldo S. Silva, Katlin I. B. Eguiluz, Giancarlo R. Salazar-Banda, Manuel A. Rodrigo, Cristina Saez
Summary: Developing highly selective anode materials for hypochlorite generation in low-concentrated sodium chloride solutions is challenging. In this study, ruthenium-based binary anodes (Ti/RuO2 -Sb2O4 and Ti/RuO2 -TiO2) were synthesized using different heating methods. The anode characteristics and catalytic activity were found to be influenced by the heating method and chemical composition. The Ti/RuO2 -TiO2 anode prepared by laser heating showed the highest electrocatalytic activity for generating hypochlorite from low-concentrated NaCl solutions. This study provides new insights into the preparation of low-cost materials for efficient disinfectant generation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
M. P. Castro, I. F. Mena, M. A. Montiel, J. Gabler, L. Schafer, C. Saez, M. A. Rodrigo
Summary: The production of peroxosulfate species, particularly Caro's acid, using boron-doped diamond electrodes and a 3D printed electrochemical cell has been studied. The effects of temperature, current density, and electrolyte concentration on the production of Caro's acid have been investigated. Lowering the temperature and increasing the current density improved the production of Caro's acid, while higher concentrations of sulfuric acid resulted in higher concentrations of Caro's acid with more unreacted sulfuric acid. The use of divided cells and continuous production mode were also studied.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Lucas B. de Faria, Guilhermina F. Teixeira, Andreia C. F. Alves, Jose J. Linares, Sergio B. Oliveira, Artur J. Motheo, Flavio Colmati
Summary: This study investigates the electrochemical degradation of the herbicide Diuron using an anodic oxidation method. The results show that the degradation follows a first-order reaction kinetics, with the highest capacity achieved at 40 mA cm(-2) and an initial Diuron concentration of 38 mg L-1. However, in terms of efficiency and energy consumption, operating at 10 mA cm(-2) is favored. The study also recommends seeking the most efficient conditions to minimize total costs and considering the required cell voltage to avoid excessive operating costs.
Article
Engineering, Multidisciplinary
Leticia Mirella da Silva, Ismael F. Mena, Miguel A. Montiel, Cristina Saez, Artur J. Motheo, Manuel A. Rodrigo
Summary: This study focuses on the development of a new electrochemical cell for the continuous production of ozone, which can efficiently degrade synthetic waste containing methomyl. The results show that the specially designed electrochemical cell, manufactured using 3D printing, can produce ozone effectively. Activation of ozone with UV light or dosing of hydrogen peroxide can improve the degradation efficiency.
RESULTS IN ENGINEERING
(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)