Article
Agricultural Engineering
Han Wang, Qun Yan, Xiaoqian Zhong, Irini Angelidaki, Ioannis A. Fotidis
Summary: Anaerobic co-digestion is a strategy for increasing methane production, but substrates rich in proteins and lipids can cause a synergetic co-inhibition effect. This study explored the microbial mechanisms behind the co-inhibition effect and found that ammonia played a major role in affecting methanogens. Decreased abundances of certain microorganisms and critical enzymes confirmed the synergetic co-inhibition effect.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Lucia Blasco, Minna Kahala, Satu Ervasti, Elina Tampio
Summary: This study investigated the effects of co-feedstock changes on the performance and evolution of microbial consortia in anaerobic digestion of cow slurry. Despite drastic changes in co-feedstock composition, stable and flexible anaerobic digestion can be achieved with cautious operation of the process.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Jingyang Shi, Guangyi Zhang, Hang Zhang, Fa Qiao, Jie Fan, Dingrong Bai, Guangwen Xu
Summary: This study investigated the effects of thermal hydrolysis pretreatment on anaerobic digestion of protein-rich discarded tofu. The results showed that thermal hydrolysis pretreatment improved the efficiency of anaerobic digestion and reduced acidification inhibition caused by increasing organic loads. Continuous anaerobic digestion relied on ammonia-tolerant microbial communities, and substrates treated with thermal hydrolysis exhibited resistance to high organic loads.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Biochemical Research Methods
Julia Zimmermann, Philipp Hubel, Jens Pfannstiel, Muhammad Afzal, C. Friedrich H. Longin, Bernd Hitzmann, Herbert Goetz, Stephan C. Bischoff
Summary: Cereal products like flour and bread can trigger diseases such as wheat allergy, celiac disease and non-celiac wheat sensitivity. This study found that the grain species have a greater influence on proteome composition than milling and fermentation processes, and allergenic proteins are more abundant in bread wheat and spelt compared to rye.
JOURNAL OF PROTEOMICS
(2021)
Article
Agricultural Engineering
Shunan Zhao, Wenhan Chen, Manli Liu, Huanyu Lv, Yunguo Liu, Qigui Niu
Summary: This study found that adding chicken manure as a co-substance can improve the biomethane production of Enteromorpha and green waste. It also showed changes in the excitation-emission matrix spectra and enhanced cellulase activity. Microbial community analysis and potential metabolic pathway analysis indicated that co-digestion enriched hydrogenotrophic methanogens.
BIOMASS & BIOENERGY
(2022)
Article
Multidisciplinary Sciences
Laura Pirkola, Johan Dicksved, Jussi Loponen, Ingela Marklinder, Roger Andersson
Summary: This study investigated the effect of two different microbial compositions on the in vitro fermentation of oat, rye, and wheat breads. The fermentation outcomes were found to be influenced by the microbiota composition and the source of dietary fiber.
SCIENTIFIC REPORTS
(2023)
Article
Biochemistry & Molecular Biology
Marjeta Mencin, Nika Markanovic, Maja Mikulic-Petkovsek, Robert Veberic, Petra Terpinc
Summary: The study aimed to investigate whether replacing wheat flour with bioprocessed spelt flour enhances the bioaccessibility of antioxidants in bread. The results demonstrated that the type and amount of bioprocessed spelt flour significantly influenced the extractable and bound total phenolic content, individual phenolics, antioxidant activity, and bioaccessibility after in vitro digestion. While certain phenolic acids decreased after digestion, others increased. Notably, the digested bread made with 5% germinated + fermented spelt flour contained significantly higher levels of trans-ferulic acid compared to the control bread. Overall, incorporating germinated and fermented or enzymatically treated spelt flour in white bread recipes could be a promising way to offer nutritionally valuable foods to consumers.
Article
Food Science & Technology
Dovile Klupsaite, Vytaute Starkute, Egle Zokaityte, Darius Cernauskas, Ernestas Mockus, Evaldas Kentra, Rugile Sliazaite, Gabriele Abramaviciute, Paulina Sakaite, Vitalija Komarova, Ieva Tatarunaite, Sandra Radziune, Paulina Gliaubiciute, Monika Zimkaite, Julius Kunce, Sarune Avizienyte, Milena Povilaityte, Kotryna Sokolova, Joao Miguel Rocha, Fatih Ozogul, Elena Bartkiene
Summary: The study evaluated the effects of scalded and scalded-fermented rye wholemeal flour on the quality and acrylamide formation of semi-wheat-rye bread. Scalding increased the content of fructose, glucose, and maltose, while scalded fermentation increased the concentration of certain amino acids, including GABA. Addition of scalded and scalded-fermented flour influenced bread shape, mass loss, color coordinates, and hardness. Scalded-fermented flour improved bread color, flavor, acceptability, and delayed staling, but resulted in higher acrylamide levels compared to the control.
Article
Environmental Sciences
Mingye Jiang, Siqi Song, Huiling Liu, Xiaohu Dai, Peng Wang
Summary: The study found that AcoD of GMRs and WS at the appropriate mixing ratio can enhance methane production, reduce the accumulation of toxic substances, maintain system stability, and mitigate the dissemination risks of antibiotic resistance genes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Agricultural Engineering
Olubunmi O. Ayodele, Abiodun E. Adekunle, Adeyinka O. Adesina, Sajedeh Pourianejad, Axel Zentner, Christina Dornack
Summary: The utilization of hydrochar and activated hydrochar derived from coffee ground biomass effectively addressed process instability in anaerobic co-digestion of organic fractions of municipal solid wastes. The addition of hydrochars resulted in a short lag phase and increased biogas yield within the first week, with subsequent improvements in nutrient retention and stability of the digestion process. Furthermore, the addition of activated hydrochar prevented washout of useful bacteria, leading to a more stable process and improved biogas production.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Ryoko Yamamoto-Ikemoto, Norihisa Matsuura, Ryo Honda, Hiroe Hara-Yamamura, Kanhchany Some, Sereyroth Prak, Kazuyoshi Koike, Taketo Togari
Summary: This study investigated the effect of gradually decreasing rice straw addition on methane production in the thermophilic anaerobic digestion of sewage sludge. The results showed that reducing rice straw addition did not lead to the accumulation of volatile fatty acids and resulted in stable methane production. Even without rice straw, methane production continued under high ammonia conditions. The digested sludge from the experimental digester exhibited higher ammonia tolerance and was dominated by cellulose-degrading bacteria Clostridia and high ammonia-resistant archaea Methanosarcina. The community remained stable for over 200 days after rice straw supply was discontinued.
BIORESOURCE TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Sylwia Zakowska-Biemans, Eliza Kostyra
Summary: Evidence of global dietary fibre (DF) deficits motivates research on developing new food products and reformulating commonly consumed foods for healthier diets. This study aimed to evaluate the sensory properties and consumers' perception, liking, and willingness to buy wheat-rye bread fortified with DF. Results showed that replacing flour with oat DF significantly influenced sensory attributes, but did not adversely affect consumers' acceptance and willingness to purchase wheat-rye bread.
APPLIED SCIENCES-BASEL
(2023)
Article
Agricultural Engineering
Suyun Xu, Yuting Duan, Simin Zou, Hongbo Liu, Liwen Luo, Jonathan W. C. Wong
Summary: The effects of biochar on the co-digestion of pig manure and dewatered sewage sludge were studied. The results showed that biochar could accelerate methane production and reduce the adaptation phase. Additionally, the addition of biochar was found to decrease the abundance of antibiotic resistance genes in the liquid phase.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Environmental
Wenxiong Jin, Zhuangqiang Dai, Ligong Wang, Fanfan Cai, Chao Song, Guangqing Liu, Chang Chen
Summary: The dramatic increase of textile wastes has led to concerns about environmental pollution and resource waste. Anaerobic digestion is a cost-effective and eco-friendly method to convert organic wastes into clean energy. This study applied anaerobic digestion to 11 commonly available textile wastes and found that it could effectively decompose the wastes and produce methane. The study also provided important data on the degradation mechanism and methane production from textile wastes.
Article
Biochemistry & Molecular Biology
Suyun Lin, Xiaoxuan Jin, Jing Gao, Esther H-J Kim, Marco P. Morgenstern, Zhizhong Dong, Jian Ying, Danqing Shao, Qian Zhao, Xiaoming Song, Weibiao Zhou
Summary: The study found that bran-fortified wheat bread produced a harder and denser bolus compared to white wheat bread during mastication, with a slightly shorter chewing time and significant reduction in particle size. Additionally, the breakdown pathways differed between the two bread types, with bran-fortified bread showing a gradual particle size reduction and white wheat bread displaying a combination of disintegration and agglomeration.
Article
Environmental Sciences
Stefanie Hess, Claudia Gallert
JOURNAL OF WATER AND HEALTH
(2015)
Article
Environmental Sciences
Daniel Jost, Josef Winter, Claudia Gallert
VADOSE ZONE JOURNAL
(2015)
Article
Environmental Sciences
Daniel Jost, Christina M. Haberer, Peter Grathwohl, Josef Winter, Claudia Gallert
VADOSE ZONE JOURNAL
(2015)
Article
Environmental Sciences
P. Hron, D. Jost, P. Bastian, C. Gallert, J. Winter, O. Ippisch
VADOSE ZONE JOURNAL
(2015)
Article
Ecology
Stefanie Hess, Claudia Gallert
Article
Engineering, Environmental
Stefanie Hess, Frauke Lueddeke, Claudia Gallert
WATER SCIENCE AND TECHNOLOGY
(2016)
Article
Engineering, Chemical
Frank Uhlenhut, Kathrin Schlueter, Claudia Gallert
CHEMIE INGENIEUR TECHNIK
(2018)
Article
Engineering, Environmental
Frank Uhlenhut, Kathrin Schlueter, Claudia Gallert
Article
Environmental Sciences
Stefan Dyksma, Claudia Gallert
ENVIRONMENTAL MICROBIOLOGY REPORTS
(2019)
Article
Microbiology
Khald Blau, Fabian K. Berger, Alexander Mellmann, Claudia Gallert
Summary: This study characterized virulence factors, antimicrobial resistance, ribotype distribution, and genetic relationship of C.difficile isolates from various fecally contaminated environmental sources. The results showed that the isolates had different virulence factors and antimicrobial resistance, indicating a potential for zoonotic transmission.
Article
Biotechnology & Applied Microbiology
Jan Torsten Jeske, Claudia Gallert
Summary: Linking community composition and ecosystem function using marker genes is important in microbial ecology. This study compares two pipelines for analyzing data and finds that they provide comparable results with some differences in community composition. The differences observed may lead to different conclusions and affect downstream analysis.
BIOENGINEERING-BASEL
(2022)
Article
Biotechnology & Applied Microbiology
Chaoran Li, Christoph Moertelmaier, Josef Winter, Claudia Gallert
BIOENGINEERING-BASEL
(2015)
Article
Engineering, Environmental
Xiaojian Liu, Bei Wang, Yayun Ma, Xiangyang Zhou, Juan Yang, Yuehui He, Jingjing Tang, Fanyun Su, Wan Yang
Summary: This study proposes a combined process of reduction roasting of herb-medicine residue and oxalic acid leaching to improve the recovery efficiency of lithium from spent lithium-ion batteries. By utilizing the reducing gas produced from the pyrolysis of herb-medicine residue, the layered structure of the cathode powder is destroyed and converted into Li2CO3, Ni, Co, and MnO. Additionally, selective extraction of lithium is achieved using oxalic acid, and the efficiency and kinetics of lithium extraction are improved under the combined action of herb-medicine residue and oxalic acid.
Article
Engineering, Environmental
Muxina Konarova, Nuno Batalha, Gabriel Fraga, Mohamed H. M. Ahmed, Steven Pratt, Bronwyn Laycock
Summary: This study presents a proof of concept for a technology that integrates PET recovery from mixed plastic waste and plastic pyrolysis. By depolymerizing PET into TPA using a low volatility oil as medium, it achieves low-pressure operation and a selective separation and recovery of TPA from the product mix. Full PET conversion and high TPA recovery were achieved, making it an effective solution for processing mixed waste streams and improving the yield and quality of liquid product from thermal pyrolysis compared to untreated feedstock.
Article
Engineering, Environmental
Zhenhua Sun, Jing Li, Xuejiang Wang, Siqing Xia, Jianfu Zhao
Summary: This study investigated the influence of in-situ formed MgFe2O4 on the hydrothermal treatment of swine manure. The results showed that the in-situ formation of MgFe2O4 improved the dehydration and decarboxylation of organic components in swine manure, thereby improving its carbonization degree. Furthermore, it enhanced the stabilization of heavy metals and the retention of phosphorus. MgFe2O4 modified hydrochars exhibited remarkable adsorption capacity for Pb(II) and Cu(II) without any leaching of heavy metals.
Article
Engineering, Environmental
Yijing Jiang, Boyang Leng, Jingxin Xi
Summary: The increased generation of municipal solid waste has had a significant impact on the economy, environment, and public health. The current waste treatment process has limitations. By developing a comprehensive social costing model, this study assesses the impacts of municipal solid waste management throughout its life cycle and provides policymakers with best practices and feasibility information.
Article
Engineering, Environmental
Marina Hernandes de Paula e Silva, Ricardo Coser Mergulha, Jose Geraldo Vidal Vieira, Andrea Brasco Pampanelli, Rodrigo Salvador, Diogo Aparecido Lopes Silva
Summary: This study developed and implemented a self-assessment tool to assist companies in decision-making processes for establishing circular flows based on Lean Manufacturing and Circular Economy principles. The tool utilized a maturity model and was applied to nine companies of varying characteristics. The findings revealed that certain companies showed higher maturity in water-waste and chemical-emissions management, with larger enterprises focusing on these strategies. However, many companies lacked sufficient training and employee awareness prior to seeking cleaner alternatives, and comprehensive actions to manage the product lifecycle were lacking. To address these gaps, the tool provided tailored recommendations for each company to improve their processes, products, and value chain.
Article
Engineering, Environmental
Gamze Dogdu, Turgay Pekdemir, Sanaz Lakestani, Seyda Karabork, Osman Cavus
Summary: This paper presents data on food waste associated with mini size food packaging services, highlighting the difficulties in emptying the food and consumer wastefulness as the main causes. These findings have significant implications for the sustainability of food and relevant packaging.
Article
Engineering, Environmental
Qingxia Li, Xin Kong, Yuxin Chen, Jianan Niu, Jia Jing, Jin Yuan, Yifeng Zhang
Summary: This study investigates how to enhance methane production from food waste after hydrothermal pretreatment. The results demonstrate a significant increase in methane yield when zero-valent iron and magnetite are used together, and high organic loading is favorable for methane production. Microbial diversity analysis further reveals the dominant pathways and metabolic processes involved in methane generation.
Article
Engineering, Environmental
D. H. H. Sim, I. A. W. Tan, L. L. P. Lim, E. T. Lau, B. H. Hameed
Summary: The development of controlled-release fertilizer formulation is important for preventing environmental pollution caused by nutrient leaching and volatilization. This study combined biochar-based fertilizer with encapsulation technology to improve the nutrient release mechanism. Optimal conditions for synthesizing urea-impregnated biochar (UIB) were determined using central composite design, and the release of nitrogen was described by mathematical models. Results showed that encapsulated UIB (EUIB) achieved complete release of nitrogen in water and exhibited improved water retention in sandy-textural soil. Therefore, EUIB derived from peppercorn waste has the potential to be used as a sustainable controlled-release fertilizer for agriculture.
Article
Engineering, Environmental
Yuchuan Wang, Neslihan Akdeniz
Summary: Incorporating biochar into composting systems can increase compost temperatures. This study developed a heat transfer model for a biochar-amended co-composting system and found that biochar increased thermal conductive losses but also enhanced microbial activity, resulting in an overall increase in total heat unit. When biochar was applied on the surface, it mainly functioned as an insulator.
Article
Engineering, Environmental
George Tsalis, Birger Boutrup Jensen, Jessica Aschemann-Witzel
Summary: This paper empirically explores the relationship between retail price promotions and household food waste. The results show that households with a higher proportion of discount food purchases and environmental awareness tend to waste less food, while larger households and those lacking food handling skills tend to waste more food.
Article
Engineering, Environmental
Lukas Friederici, Arne Koch, Patrick Martens, Jana Pantzke, Sebastiano Di Bucchianico, Thorsten Streibel, Christopher P. Rueger, Ralf Zimmermann
Summary: The increasing demand for lightweight materials has led to a rise in fiber-reinforced plastic (FRP) production. However, the properties and compositional range of FRPs pose challenges to recycling strategies. Pyrolysis has emerged as a promising method for separating the fibers from the polymer matrix. This study investigated the pyrolysis process using thermal analysis and high-resolution mass spectrometry, and also assessed the toxicity of the recovered fibers using an in vitro model.
Review
Engineering, Environmental
Devika Kannan, Shakiba Khademolqorani, Nassibeh Janatyan, Somaieh Alavi
Summary: This paper introduces Smart Waste Management (SWM) that applies Industry 4.0 technologies in waste management. A framework called SWM4.0 is developed, which highlights the importance of smart people, smart cities, smart enterprises, and smart factories in achieving successful waste management. The paper also suggests future research directions and managerial implications.