Article
Engineering, Chemical
Jiahong Wu, Hamza Annath, Haili Chen, Chirangano Mangwandi
Summary: This study developed cost-effective bio-sorbent materials for heavy metal removal from wastewater using locally available tea wastes as precursors. The preparation methods of magnetic/non-magnetic tea waste-based adsorbents were discussed, and their properties were correlated with Cr(VI) adsorption capacity. The bio-sorbents were characterized by various techniques, and the Cr adsorption performance was investigated under different conditions. The tea waste-based bio-sorbents showed high efficiency in removing Cr.
Article
Biotechnology & Applied Microbiology
R. Martzy, T. M. Mello-de-Sousa, R. L. Mach, D. Yaver, A. R. Mach-Aigner
Summary: The study reveals that spontaneous degeneration of Trichoderma reesei strains during large-scale cultivation can lead to a loss of cellulase formation. The chromatin condensation in relevant promoter regions, related to the production capacity of the strain, plays a role in the occurrence of degenerated strain population.
BIOTECHNOLOGY FOR BIOFUELS
(2021)
Article
Materials Science, Multidisciplinary
Uttam Kumar Sahu, Ying Zhang, Wei Huang, Hui Ma, Sandip Mandal, Sumanta Sahu, Manoj Kumar Sahu, Raj Kishore Patel, Shengyan Pu
Summary: In this study, a tea waste/CeO2 bio-composite was synthesized and evaluated for the remediation of Cr(VI) in contaminated water. The bio-composite demonstrated high removal efficiency, with 96% of Cr(VI) being removed under optimized conditions. The material also showed good reusability, with 85% removal efficiency in the fourth consecutive cycle.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Inorganic & Nuclear
Yefan Qing, Wei Gao, Yantong Long, Yijin Kang, Chen Xu
Summary: In this study, a Ti-based metal-organic framework (MOF) was functionalized by introducing amidoxime groups, resulting in excellent Cr(VI) adsorption performance.
INORGANIC CHEMISTRY
(2023)
Article
Microbiology
Jawad Alharake, Frederique Bidard, Thiziri Aouam, Catherine Senamaud-Beaufort, Antoine Margeot, Senta Heiss-Blanquet
Summary: The transcription factor RES2 in the T. reesei Rut-C30 strain contributes to higher protein secretion by adjusting the expression of genes involved in different steps of protein synthesis and the secretion pathway.
Article
Engineering, Environmental
Lan Huong Nguyen, Huu Tap Van, Quang Trung Nguyen, Thu Huong Nguyen, Thi Bich Lien Nguyen, Van Quang Nguyen, Thu Uyen Bui, Hung Le Sy
Summary: This study investigated the adsorption of Cr(VI) onto pristine and iron modified hydrochar generated from paper waste sludge. The results showed that the hydrothermal carbonization temperature of 200°C was most suitable for hydrochar production. Both PSH and PSH-Fe15 exhibited equilibrium adsorption of Cr(VI) after 120 minutes, with removal efficiencies of 39.62% and 57.80% respectively. The adsorption process was well described by the Sips and Redlich-Peterson isotherm models, and followed a pseudo-second-order kinetic model.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Agriculture, Multidisciplinary
Jing Li, Yumeng Chen, Ao Gao, Liujing Wei, Dongzhi Wei, Wei Wang
Summary: A T. reesei cell factory was constructed for the first time to produce ig-carotene. By overexpressing key enzymes including CarRP, CarB, GGS1/CrtE, and HMG1, and optimizing the concentration of medium components, the modified strain achieved a titer of 218.8 mg/L of ig-carotene in flask culture. This study offers a novel and unique approach to simultaneously produce proteins and carotenoids using T. reesei industrial strains, addressing the costly waste mycelium management process.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Environmental Sciences
Fenglei Liu, Shan Hua, Chao Wang, Baowei Hu
Summary: This study utilized waste paper as a cross-linking agent to immobilize persimmon tannin for the removal of U(VI) and Cr(VI), achieving competitive maximum removal capacities. The adsorption process was influenced by various factors and well fitted by Langmuir and Pseudo-second-order equations. Adsorption mechanisms were identified as surface complexation for U(VI) and redox reaction for Cr(VI), providing a high-efficiency and low-cost adsorbent for radioactive nuclide and heavy metal treatment.
Article
Chemistry, Physical
Xiangpeng Gao, Cheng Guo, Junjie Hao, Yan Zhang, Mingyang Li, Zhuo Zhao
Summary: In this study, the combination of calcium chloride and iron(III) nitrate with polyethyleneimine grafted sodium alginate successfully produced materials for the efficient removal of Cr (VI). The SPF material showed superior performance in the photocatalytic reduction of Cr (VI) due to its lower charge transfer resistance, facilitating the separation of photogenerated charges.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Chemical
Wei Li, Lanfang Chai, Boyu Du, Xiaohong Chen, Run-Cang Sun
Summary: In this study, a high hydroxyl content demethylated alkaline lignin (DAL) was successfully prepared as a full-lignin-based adsorbent for the efficient removal of Cr(VI) ions from wastewater. The adsorption capacity for Cr(VI) was up to 703.6 mg/g at 30 degrees C, and the adsorption process was determined to be endothermic and spontaneous. The spent adsorbents revealed that the adsorption may be driven by the reduction of negatively charged Cr2O72- or HCrO4- ions to positively charged Cr3+, which could interact with the oxygen-containing groups in lignin.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Ruben Dario Romero Pelaez, Daiana Wischral, Joice Raisa Barbosa Cunha, Thais Demarchi Mendes, Thalyta Fraga Pacheco, Felix Goncalves de Siqueira, Joao Ricardo Moreira de Almeida
Summary: This study aimed to produce enzymatic extracts from co-cultured fungi with hydrolytic and oxidative activities for efficient hydrolysis of lignocellulosic biomasses. The co-cultures of Trichoderma reesei and Panus lecomtei showed positive interaction and responded positively to variations in temperature and inoculum interval. The enzymatic extract production of co-cultures was improved by modifying the media composition, resulting in higher hydrolysis yields and ethanol production. This work demonstrates the use of fungi co-cultures to produce enzymatic extracts for efficient hydrolysis and fermentation of pretreated lignocellulosic biomass.
FERMENTATION-BASEL
(2022)
Article
Engineering, Environmental
Fenglei Liu, Yiting Lou, Fang Xia, Baowei Hu
Summary: A novel collaborative strategy was developed by loading nZVI into the inter-layer structure of MBenes, enhancing the removal of U(VI)/Cr(VI). The results showed that nZVI@MBenes exhibited higher removal rate and saturated capacity compared to nZVI or MBenes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Yiran Sun, Fei Yu, Liqing Li, Jie Ma
Summary: The study introduces a flexible one-pot approach to synthesize amino-functional graphene sponge adsorbents for eliminating Hexavalent Chromium in aqueous environment, which showed outstanding adsorption capacity and reduction efficiency. The novel adsorbents have great potential in treating chromium containing wastewater.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Zixin Chen, Keliang Pan
Summary: Reduction and recycling of Cr(VI) through PPy/SCB composites offers an effective method for environmental governance. The adsorption behavior of Cr(VI) on PPy/SCB is influenced by factors such as initial pH, contact time, and composition ratio. The pseudo-second-order kinetic model is the most suitable for describing the adsorption kinetics of Cr(VI) on PPy/SCB.
Article
Biochemistry & Molecular Biology
Cheng Guo, Shaojie Wu, Xiangpeng Gao, Mingyang Li, Hongming Long
Summary: A novel composite material was prepared by blending graphene oxide into polyethyleneimine grafted sodium alginate, which showed remarkable removal efficiency for hexavalent chromium (Cr (VI)) in high initial concentration solutions. The composite material exhibited a high removal rate of 86.16% for adsorption and 99.92% for photoreduction. Additionally, blending graphene oxide narrowed the bandgap of the composite material, enhancing its light response and photoreduction ability towards Cr (VI).
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Biotechnology & Applied Microbiology
Tzu-Hsuan Yu, Shih- Tan, Ying-Chen Yi, Chengfeng Xue, Wan-Wen Ting, Jui-Jen Chang, I-Son Ng
Summary: The study demonstrated that codon adaptation index and tRNA adaptation index influence the expression level and folding of recombinant ALAS gene in E. coli. Genomic integration and co-expression of chaperone helped increase 5-ALA production in E. coli. Addition of ferric ion during continuous culture boosted cell growth and 5-ALA production.
BIOCHEMICAL ENGINEERING JOURNAL
(2022)
Article
Multidisciplinary Sciences
Xiumei Luo, Tingting Tian, Li Feng, Xingyong Yang, Linxuan Li, Xue Tan, Wenxian Wu, Zhengguo Li, Haim Treves, Francois Serneels, I-Son Ng, Kan Tanaka, Maozhi Ren
Summary: During the arms race between plants and pathogens, PR1 proteins in host plants play a crucial role in disease resistance. This study investigates the anti-oomycete activity of secretory PR1 proteins and elucidates their underlying mechanisms by studying the potato-Phytophthora infestans pathosystem. The results provide novel insights into the molecular function of PR1 in protecting plants against pathogen infection and uncover a potential target for preventing late blight.
JOURNAL OF ADVANCED RESEARCH
(2023)
Review
Microbiology
Sefli Sri Wahyu Effendi, I-Son Ng
Summary: EcN is a notable probiotic used to treat Crohn's disease and irritable bowel syndrome. A comprehensive genomic database is helpful in assessing EcN's role in human health. Recent advancements in synthetic and genetic tools have made it possible to engineer EcN as a living medicine with controllable functions. Further studies are needed to fully explore the potential of EcN in disease treatment.
CRITICAL REVIEWS IN MICROBIOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Wan-Wen Ting, I-Son Ng
Summary: Chromosome-based engineering is a superior approach for generating a stable and reliable gene chassis. In this study, the effective T7 RNA polymerase (T7RNAP) was incorporated into Escherichia coli W3110, resulting in successful 5-aminolevulinic acid (5-ALA) production. By comparing the metabolic differences in four different strains, it was found that strain RH had the highest production and the lowest by-product acetate. Overexpression of phosphoenolpyruvate carboxylase (PEP) led to high 5-ALA production. The metabolic analysis of strain RH revealed that alpha-ketoglutaric acid dominated the 5-ALA production. Finally, a robust and efficient gene chassis was established for low-carbon assimilation and high-level 5-ALA production.
BIOTECHNOLOGY AND BIOENGINEERING
(2023)
Article
Biotechnology & Applied Microbiology
Chengfeng Xue, I-Son Ng
Summary: This research discovered the impact of PLP on bacterial biomass and established a novel enzyme evaluation platform (DEEP) using CRISPRi technology to enhance the biomass and activity of PLP-dependent enzymes. DEEP is not only suitable for high-throughput screening of the best PLP engineering chassis, but also for fine-tuning the quantity and quality of enzymes.
BIOTECHNOLOGY AND BIOENGINEERING
(2023)
Article
Biochemistry & Molecular Biology
Po-Yen Chen, Ying-Chen Yi, Han-Ching Wang, I-Son Ng
Summary: Aquacultural shrimps are economically affected by the fatal and contagious white spot syndrome virus (WSSV), which remains a mystery in terms of its infectious mechanism. In this study, the optimal expression of WSSV355 was achieved in engineered Escherichia coli strains through codon usage optimization, strain selection, and co-expression with pRARE. The production of WSSV355 was further enhanced by scaling up production in the fermenter under optimized oxygen supply conditions.
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
(2023)
Review
Agricultural Engineering
Tse-Min Lee, Jia-Yi Lin, Tsung-Han Tsai, Ru-Yin Yang, I-Son Ng
Summary: Carbon dioxide is the main greenhouse gas and a critical issue for global warming and climate change. Microalgae, which are inconspicuous microorganisms, account for 40% of carbon fixation in photosynthetic plants and have higher photosynthetic efficiency. They convert carbon into various useful compounds. Genetic engineering and metabolic engineering are used to increase the growth rate and biomass of microalgae to achieve carbon neutrality. CRISPR/Cas9 is an efficient tool to enhance productivity in microalgae by regulating multiple genes simultaneously. This review summarizes the technologies, bioinformatics tools, and systematic engineering approaches for carbon neutrality and circular economy, bringing us closer to a decarbonized society.
BIORESOURCE TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Ying-Chen Yi, I-Son Ng
Summary: Researchers are exploring biological methods to reduce carbon dioxide emissions instead of using physical and chemical methods currently. They have successfully produced glycolic acid, a promising component for bioplastics, food, and pharmaceutical industries, using genetically engineered Escherichia coli in a low-carbon manner. By optimizing certain genes, they achieved a high yield of glycolic acid and improved carbon dioxide uptake. This eco-friendly and cost-efficient approach could contribute to chemical production with reduced carbon emissions.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Engineering, Environmental
Jia-Yi Lin, I-Son Ng
Summary: The newly discovered halophilic Cyanobacteria aponinum PCC10605 shows robust growth as a blue alga, compared to other strains such as Chlorella sorokiniana, Chlorella vulgaris, and Chlamydomonas reinhardtii. The optimal conditions for PCC10605 cultivation were found to be autotrophic growth in 20 g/L seawater at 39 degrees C. When the nitrogen and phosphorus concentration was at a ratio of 3:1, PCC10605 showed fast growth and higher C-phycocyanin (C-PC) productivity. It achieved a biomass concentration of 1.53 g/L and C-PC production of 0.492 g/L under 25% light intensity and a 12:12 light period. Additionally, PCC10605 demonstrated the potential for negative carbon emissions when cultured in a mixed medium and wastewater with a 1:2 vol ratio, reducing 40.5% of chemical oxygen demand (COD) and simultaneously capturing 1.71 g-CO2.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biotechnology & Applied Microbiology
Priskila Adjani Diankristanti, Sefli Sri Wahyu Effendi, Chuan-Chieh Hsiang, I-Son Ng
Summary: Using whole-cell biocatalysts to produce itaconic acid (IA) from citrate is an alternative approach to overcome the limitations of in vivo IA production. By employing engineered E.coli Lemo21(DE3) with aconitase (Acn) and cis-aconitate decarboxylase (CadA), IA titer of 72.44 g/L was achieved, which increased to 81.6 g/L after cold-treating the biocatalysts. Furthermore, a new seeding strategy in Terrific Broth (TB) maintained the biocatalysts stability for up to 30 days and the highest IA titer of 98.17 g/L was obtained using the L21::7G chassis.
ENZYME AND MICROBIAL TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Chengfeng Xue, I-Son Ng
Summary: For the first time, Pyridoxal 5'-phosphate (PLP) was used as a protein decoy to enhance enzyme expression and activity. By introducing new substrates and altering metabolic pathways, the growth and protein yield of the strain were further improved.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Engineering, Chemical
Ying-Chen Yi, Shih- Tan, Ruei-En Hu, Chuan-Chieh Hsiang, Jia-Yi Lin, Sefli Sri Wahyu Effendi, I-Son Ng
Summary: This study explored the temperature effect on plasmid replication in Escherichia coli and developed a thermal switchable and reversible protein expression system based on the observation. It was found that the constitutive J23100 and T7 promoter can be remodeled as a robust temperature-control system for reporter genes and functional proteins.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Biochemistry & Molecular Biology
Yu -Chi Tseng, Chengfeng Xue, I-Son Ng
Summary: The abundance and biodiversity of intestinal bacteria are crucial for the immune system. Two important probiotics, Escherichia coli Nissle 1917 (EcN) and Lactobacillus rhamnosus GG (LGG), have been found to enhance intestinal immunity in symbiosis with other cells. By optimizing the culture medium and establishing a novel colony quantification method, the advantages of EcN and LGG can be fully utilized. Co-culturing LGG with EcN leads to increased lactate consumption, and the enzyme YkgG from EcN is responsible for this conversion. The co-culture strategy of EcN with LGG in the gastrointestinal tract shows promising results in increasing colony-forming units (CFU) in a short period of time.
PROCESS BIOCHEMISTRY
(2023)
Article
Biotechnology & Applied Microbiology
Ruijuan Ma, Yuanwei You, Xinyu Liu, Shih-Hsin Ho, Youping Xie, Jianfeng Chen
Summary: In this study, a microalga strain Nitzschia sp. FZU62 capable of co-producing fucoxanthin and eicosapentaenoic acid (EPA) was isolated and identified. The optimal conditions for flask culture were determined, and three fed-batch culture strategies were explored to improve the heterotrophic performance. The study achieved superior fucoxanthin and EPA productions compared to previous literature reports, providing new insights and guidance for the commercial production of microalgae.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Biotechnology & Applied Microbiology
Ruijuan Ma, Zhen Zhang, Hong Fang, Xinyu Liu, Shih-Hsin Ho, Youping Xie, Jianfeng Chen
Summary: This study revealed the molecular mechanisms for high lutein production efficiency of C. sorokiniana FZU60 under the mixotrophy/photoautotrophy strategy through physiological, biochemical, and transcriptomic analysis. Key functional genes responsible for lutein biosynthesis were identified, providing guidance for further improvement of lutein production by genetic or metabolic engineering in future studies.
BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS
(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)
