Review
Environmental Sciences
Min Ye, Yu-You Li
Summary: This review comprehensively summarizes the characteristics of dairy wastewater and reveals the mechanisms and impacts of three critical issues in anaerobic treatment. It evaluates current remedial strategies and the application of anaerobic membrane bioreactors. The review also discusses the use of nitrogen-removed effluent return and trace metal addition to improve the treatment efficiency and stability of dairy wastewater.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Energy & Fuels
K. Bella, P. Venkateswara Rao
Summary: Due to increasing demand for dairy products, a large number of dairy industries generate highly polluting wastewater. Anaerobic digestion technology has been widely adopted for treating dairy wastes due to its energy recovery and waste stabilization benefits. This review paper focuses on studying the effects of key parameters on the operation of anaerobic digesters and improving biogas production efficiency for treating dairy wastes. It also discusses the characteristics of different waste streams in the dairy industry, the process chemistry of anaerobic degradation, the need for pre-treatment technologies, and the potential for co-digestion of dairy wastewater with other organic wastes.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Environmental Sciences
Alessandra Giordani, Gunther Brucha, Kyem A. Santos, Karina Rojas, Elize Hayashi, M. Madalena S. Alves, Giovana Tommaso
Summary: This study examined the impact of increasing organic loading rate on the microbial community and performance of the HABR during simulated dairy wastewater treatment. The system could maintain high COD removal efficiency and increase methane production, with most of the organic matter removal occurring in compartments C1 and C2. The dominant species in the HABR were acetoclastic methanogen Methanosaeta and hydrogenotrophic methanogen Methanobacterium, while species capable of syntrophic partnership with methanogens were also identified.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Environmental Sciences
Adi Kusmayadi, Po-Han Lu, Chi-Yu Huang, Yoong Kit Leong, Hong-Wei Yen, Jo-Shu Chang
Summary: This study demonstrated the use of different strategies for treating dairy wastewaters with varying COD levels, showing that microalgal cultivation can achieve high biomass concentration and efficient removal of COD while recovering nutrients.
Article
Agricultural Engineering
Anna Christine Trego, B. Conall Holohan, Ciara Keating, Alison Graham, Sandra O'Connor, Michael Gerardo, Dermot Hughes, Umer Zeeshan Ijaz, Vincent O'Flaherty
Summary: This study demonstrates the feasibility of high-rate, direct treatment of low-strength municipal wastewater at low temperatures for the first time. Efficient removal of BOD from wastewater and the discovery of a highly adaptable core microbiome provide a foundation for next-generation municipal wastewater treatment.
BIORESOURCE TECHNOLOGY
(2021)
Review
Engineering, Environmental
Akash P. Bhat, Parag R. Gogate
Summary: Cavitation-based pre-treatment processes can improve the efficiency of biological treatment, with notable benefits such as reduction in COD for wastewater and enhanced biodegradability index. Additionally, for sludge, it can lead to smaller particle sizes, increased soluble COD and disintegration, and higher biomethane production potential.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Zhuan Khai Lim, Min Zheng, Zhiguo Yuan, Jianhua Guo, Shihu Hu
Summary: This study demonstrated the versatile applications of n-DAMO process in real wastewater treatment for the first time, achieving effective nitrogen removal by combining anammox and n-DAMO microorganisms.
Article
Engineering, Environmental
Roshini Sasidharan, Arvind Kumar, Balasubramanian Paramasivan, Abanti Sahoo
Summary: This study analyzed the prospects of combining photocatalysis and anaerobic digestion of dairy wastewater using a nano-catalyst made of reduced graphene oxide (RGO) and nano-zerovalent iron (NZVI). The results show that the combination of RGO-NZVI catalyst effectively treated and degraded dairy wastewater, achieving significant removal of organic pollutants.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
D. Liakos, G. Altiparmaki, A. Kalampokidis, D. F. Lekkas, S. Vakalis
Summary: The food production industry on Lesvos island generates a significant amount of liquid biowaste, including olive mill wastewater, cheese whey wastewater, and wine sludge. Co-utilizing different food waste sources supports the Circular Economy concept and offers alternative routes in the waste valorization field. The study focused on the hydrothermal treatment of high-phenolic sources to produce hydrochar, which was then used in Anaerobic Digestion of cheese whey wastewater. The addition of hydrochar from wine sludge led to the highest biogas production but mitigated biogas production at higher concentrations. The hydrochars also had an impact on the phenolic content of the digestates and facilitated the production of medium-chain VFAs, which was statistically significant according to ANOVA.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Article
Agricultural Engineering
Jinsu Kim, Hyungmin Choi, Changsoo Lee
Summary: This study demonstrates the formation of conductive magnetite-embedded granular sludge and its positive impact on the performance of anaerobic sludge blanket reactors treating dairy wastewater. The magnetite-supplemented reactor showed better performance, with improved sludge settling and electron transport activity, as well as higher abundance of electroactive microbes. This study offers a new approach to enhance anaerobic granular sludge systems.
BIORESOURCE TECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Lea Chua Tan, Rogelio Peschard, Zhe Deng, Ana Lucia Morgado Ferreira, Piet N. L. Lens, Santiago Pacheco-Ruiz
Summary: This study compared the impact of continuous feeding and batch feeding strategies on the performance of a side-stream anaerobic membrane bioreactor and found that continuous feeding led to higher accumulation of proteins and carbohydrates in the sludge, resulting in a more viscous sludge with lower specific methanogenic and protease activity compared to batch feeding. However, batch feeding resulted in a higher specific resistance to filtration, potentially due to a higher fraction of smaller sized particles in the sludge.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Agricultural Engineering
Xiaojuan Chen, Rui Tang, Yulan Wang, Shoujun Yuan, Wei Wang, Ibrahim Mohamed Ali, Zhen-Hu Hu
Summary: The study found that US/ozone pretreatment can effectively reduce the concentration of enteric indicator bacteria, but cannot decrease the absolute concentration of antibiotic resistance genes. In the anaerobic digestion process of dairy wastewater, using ozone or US/ozone pretreatment can significantly increase methane production and inhibit the enrichment of antibiotic resistance genes.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Min Ye, Borchen Sun, Aijun Zhu, Liuying Song, Juntong Ha, Yu Qin, Yu-You Li
Summary: This study found that the anaerobic digestion process of dairy processing wastewater is influenced by trace metal content. Deficiency in trace metals can lead to deterioration of the process, reduced biogas production, disruption of the buffer system, and accumulation of organic acids. The lack of cobalt and nickel has a significant impact on the process, while iron concentrations fluctuate. In a deficiency of trace metals, syntrophic propionate oxidizing bacteria and methanogens are suppressed, resulting in anaerobic digestion failure. Therefore, supplying the appropriate trace metal dosage is crucial for achieving an efficient and stable anaerobic digestion process and a robust microbial community.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Sergi Vinardell, Sergi Astals, Konrad Koch, Joan Mata-Alvarez, Joan Dosta
Summary: The study evaluated the economic implications of co-digesting sewage sludge and food waste in anaerobic membrane bioreactors. It found that higher electricity revenue from co-digesting food waste could offset additional costs, but not when treating nutrients backload in sidestream digesters. Biosolids disposal was identified as the most significant cost in all scenarios, and sensitivity analysis showed that food waste gate fee influenced co-digestion economic feasibility.
BIORESOURCE TECHNOLOGY
(2021)
Article
Energy & Fuels
Ruikun Wang, Pingbo Peng, Shulong Qi, Gaoke Song, Zhenghui Zhao, Qianqian Yin
Summary: This study treated hydrothermal carbonization wastewater (HTCWW) of sewage sludge (SS) through anaerobic digestion (AD) with the addition of modified straw hydrochar. The modified hydrochar improved the methanogenic performance by reducing the adverse effects of toxic substances in HTCWW on microorganisms. The results showed that adding modified hydrochar significantly increased methane yield and shortened the lag period of AD.
Article
Energy & Fuels
E. Salimi, M. E. Taheri, K. Passadis, J. Novacovic, E. M. Barampouti, S. Mai, K. Moustakas, D. Malamis, Maria Loizidou
Summary: This study investigated the conversion of dehydrated restaurant food waste into used oil, ethanol, and methane through thermal dehydration, oil extraction, and enzyme-assisted starch bioconversion. The experimental results demonstrated the potential for efficient bioenergy production and were integrated into a material flow diagram for biorefinery scheme assessment.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Environmental Sciences
Jelica Novakovic, Nikoleta Kontogianni, Elli Maria Barampouti, Sofia Mai, Konstantinos Moustakas, Dimitris Malamis, Maria Loizidou
Summary: This study focused on investigating enzymatic saccharification and detoxification of wheat straw to enhance the performance of conventional anaerobic systems in treating recalcitrant fractions of agricultural waste. It was found that the optimized conditions for pretreatment resulted in satisfactory COD removal efficiencies for OLRs up to 10 kg COD/m(3)/day, significantly reducing the hydraulic retention time compared to untreated straw.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Konstantinos Passadis, Vassileios Fragoulis, Vasileia Stoumpou, Jelica Novakovic, Elli Maria Barampouti, Sofia Mai, Konstantinos Moustakas, Dimitris Malamis, Maria Loizidou
WASTE AND BIOMASS VALORIZATION
(2020)
Article
Energy & Fuels
Mir Edris Taheri, Erfaneh Salimi, Konstantinos Saragas, Jelica Novakovic, Elli Maria Barampouti, Sofia Mai, Dimitris Malamis, Konstantinos Moustakas, Maria Loizidou
Summary: Research showed that pretreating food waste can improve enzymatic hydrolysis efficiency, with hexane extraction proven to be an effective method for obtaining high glucose yield and starch and cellulose degradation.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Green & Sustainable Science & Technology
Vasileia Stoumpou, Jelica Novakovic, Nikoleta Kontogianni, Elli Maria Barampouti, Sofia Mai, Kostantinos Moustakas, Dimitris Malamis, Maria Loizidou
Article
Green & Sustainable Science & Technology
Federico Battista, Elli Maria Barampouti, Sofia Mai, David Bolzonella, Dimitris Malamis, Konstantinos Moustakas, Maria Loizidou
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2020)
Article
Polymer Science
Christina Gkountela, Maria Rigopoulou, Elli Maria Barampouti, Stamatina Vouyiouka
Summary: An alternative process for producing poly(butylene succinate) (PBS) was applied, involving enzymatic polycondensation and bulk post-polymerization, resulting in a PBS grade with high quality and thermal properties.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Environmental Sciences
Elli Maria Barampouti, Christos Grammatikos, Vasileia Stoumpou, Dimitris Malamis, Sofia Mai
Summary: This study investigated the synergies of co-treatment of brewers' spent grains and spent coffee grounds for biodiesel and bioethanol production, optimizing the process parameters to achieve the lowest ethanol production cost. The results showed technical feasibility of extracting oil content and achieving high ethanol yields, demonstrating the potential for biofuels production to address the energy crisis.
WASTE AND BIOMASS VALORIZATION
(2022)
Article
Environmental Sciences
M. Sofokleous, A. Christofi, D. Malamis, S. Mai, E. M. Barampouti
Summary: This paper explores the utilization of green waste for the production of biofuels, specifically bioethanol and biogas. The experiment involves anaerobic digestion for biogas production and alcoholic fermentation for bioethanol production. Results show moderate efficiencies and the need to consider other techno-economic factors for sustainable valorisation of green waste.
Article
Energy & Fuels
K. Passadis, D. Christianides, D. Malamis, E. M. Barampouti, S. Mai
Summary: The study proves that utilizing food waste for bioethanol production is technically feasible on a pilot scale, but when assessing the viability of the process, further techno-economic factors of the whole value chain must be considered.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Green & Sustainable Science & Technology
Panagiota Tsafara, Konstantinos Passadis, Diogenis Christianides, Emmanouil Chatziangelakis, Ioannis Bousoulas, Dimitris Malamis, Sofia Mai, Elli Maria Barampouti, Konstantinos Moustakas
Summary: This study demonstrates the successful and scalable production of purified ethanol from dried source-separated municipal biowaste through stepwise upscaling. The results show that bioethanol yields have excellent scalability, and the produced ethanol meets industrial standards. The study highlights the potential of bioethanol as a sustainable and efficient alternative fuel.
Article
Green & Sustainable Science & Technology
Christina Andrianou, Konstantinos Passadis, Dimitris Malamis, Konstantinos Moustakas, Sofia Mai, Elli Maria Barampouti
Summary: Industries are seeking ways to valorise their waste and reduce their carbon footprint, while addressing the issue of food insecurity. This study optimised a strategy to turn orange juice industry by-products into high-value secondary feedstuff for animals through saccharification and aerobic fermentation. The formulated feedstock had higher in vitro organic matter digestibility and protein content.
Article
Green & Sustainable Science & Technology
Jesus M. Martin-Marroquin, Lidia Garrote, Dolores Hidalgo, Konstantinos Moustakas, Elli Maria Barampouti, Sofia Mai
Summary: tau's paper proposes a sustainable treatment scheme for effluents from fruit and vegetable processing industries with high organic load. The scheme involves cultivating heterotrophic microalgae and using microalgae spray drying to produce commercial end-products (biofertilisers and/or animal feed). The pilot plant, powered by renewable energy, demonstrated that the produced algae could be commercialized as a solid NPK organic fertilizer and efficiently included in animal feed. The proposed solution illustrates the circular economy concept and has significant environmental benefits.
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2023)
Article
Green & Sustainable Science & Technology
Nicos Solomou, Dimitris Malamis, Elli Maria Barampouti, Sofia Mai, Maria Loizidou
Summary: An innovative and integrated scheme that combines two waste treatment technologies has been demonstrated as an effective and zero-waste approach for treating wastewater and biowaste. Prediction models were developed to design and control the scheme, and the performance of a full-scale plant was simulated, showing clear benefits for practical applications in waste treatment plants.
Article
Biotechnology & Applied Microbiology
Vassilios Felekis, Chrysanthi Stavraki, Dimitris Malamis, Sofia Mai, Elli Maria Barampouti
Summary: Currently, industries are required to reduce carbon emissions and adopt greener alternatives. The food industry has employed a life cycle strategy to minimize the environmental impact of their products. The potato processing sector generates a significant amount of waste, and this study focuses on converting potato waste into bioethanol at a pilot level. Various experimental trials were performed to determine the most effective pretreatment and hydrolysis conditions for each waste stream. The results were scaled up by a factor of 1000 and showed comparable or even higher yields. Based on these findings, a full-scale implementation plan was developed, estimating a production of around 2 m(3) of bioethanol per week.
FERMENTATION-BASEL
(2023)
Article
Agricultural Engineering
Yifan Bai, Junzhen Yu, Shuqin Yang, Jifeng Ning
Summary: A real-time recognition algorithm (Improved YOLO) is proposed in this paper for accurately identifying small, similar-colored, and overlapping strawberry seedling flowers and fruits. The experimental results show that the algorithm achieves high precision, recall, and average precision, and meets the real-time detection requirements, providing effective support for the automated management of strawberry seedling flower and fruit thinning.
BIOSYSTEMS ENGINEERING
(2024)