Article
Energy & Fuels
L. A. Romero De Leon, P. Quinto Diez, L. R. Tovar Galvez, L. Alvarado Perea, C. A. Lopez Barragan, C. A. Garcia Rodriguez, A. Reyes Leon
Summary: This study found that the biochemical methane potential of water hyacinth and municipal solid waste in Mexico City could be effectively managed through anaerobic digestion and anaerobic codigestion processes. The substrate-to-inoculum ratio played a significant role in volatile solids degradation. Anaerobic digestion of municipal solid waste with a S:I ratio of 1:1 produced more methane than anaerobic codigestion, but the difference was not statistically significant. Overall, the research highlighted the potential of using anaerobic digestion for renewable energy production and addressing the issues associated with water hyacinth, municipal solid waste, and leachate.
Article
Engineering, Chemical
Hilario Flores-Mejia, Antonio Lara-Musule, Eliseo Hernandez-Martinez, Ricardo Aguilar-Lopez, Hector Puebla
Summary: This paper addresses the issue of efficient monitoring in anaerobic digestion processes, presenting two indirect monitoring approaches and discussing their performance using experimental data. Fractal analysis plays a key role in the data-driven approach, while observer techniques are shown to accurately predict key process variables.
Article
Environmental Sciences
Nga Tran Thi Viet, Duc Canh Vu, Thu Hang Duong
Summary: This study evaluated a submerged flat sheet anaerobic membrane bioreactor (AnMBR) system's performance in treating wastewater from a slaughterhouse in Hanoi at different hydraulic retention times (HRT) of 8 to 48 hours. The system achieved high removal efficiencies for suspended solids (SS) and chemical oxygen demand (COD) at an optimum HRT of 24 hours. Importantly, the system maintained stable operation without flux decay and membrane fouling.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
K. Bella, P. Venkateswara Rao
Summary: The study investigated the improvement of anaerobic digestion of cheese whey waste and found that septage is an excellent co-substrate. The highest biogas production was achieved with cattle manure inoculated mixture at 60% whey fraction.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Jaqueline Cardoso Ribeiro, Vera Taina Mota, Valeria Maia de Oliveira, Marcelo Zaiat
Summary: The study found that cheese whey can be used as a substrate for BioH(2) production without pH adjustment, but there are challenges in enriching hydrogenogenic biomass.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Vianka Celina Hernandez-Fydrych, Maria del Carmen Fajardoz-Ortiz, Monica Liliana Salazar-Pelaez
Summary: This study analyzed the performance of a hybrid upflow anaerobic sludge blanket (HUASB) reactor packed with natural zeolite for slaughterhouse wastewater treatment through kinetics modeling. The results showed that the use of a zeolite filter improved the removal efficiency of COD, solids, and nitrogen and phosphorus compounds in the modified HUASB reactor.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Physical
A. A. Kovalev, E. R. Mikheeva, I. V. Katraeva, D. A. Kovalev, A. M. Kozlov, Yu. Litti
Summary: In this study, the energy recovery from two-stage mesophilic-thermophilic anaerobic digestion of cheese whey was assessed. The maximum energy production rate of 53.2 kJ/(L d) was achieved at a COD level of 13.8 g O2/L, HRT in an acidogenic reactor of 10 h, and HRT in a methanogenic reactor of 48 h. The maximum energy yield of 14.42 kJ/g COD was obtained at a COD level of 9.2 g O2/L, HRT in an acidogenic reactor of 10 h, and HRT in a methanogenic reactor of 72 h.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Agricultural Engineering
Zhiyue Wu, Yuan Liu, Junqiang Yao, Xiaoyu Zheng, Simon Mdondo Wandera, Renjie Dong, Yu-You Li, Wei Qiao
Summary: The study demonstrated that an AnMBR system with high flux and membranes embedded in high solid conditions can effectively treat leachate from the organic fraction of municipal solid waste (OFMSW), with sustainable flux identified through the research.
BIORESOURCE TECHNOLOGY
(2021)
Article
Thermodynamics
T. J. Bolen, Mahmudul Hasan, Timothy Conway, Djigui David Stephane Yameogo, Pablo Sanchez, Arifur Rahman, Hossain Azam
Summary: This study investigated the impact of co-digestion of waste activated sludge and primary sludge with various organic wastes on biogas production. The results showed that adding cheese whey and grease interceptor waste increased methane production by 15% and 2% respectively, and improved volatile solids removal. However, co-digestion of cheese whey and primary sludge did not enhance biogas production, whereas mixing grease interceptor waste and pulped food waste with primary sludge showed potential for improved biogas production. Additionally, detailed energy balance analysis of a water resource recovery facility was conducted to understand the influence of co-digestion on energy neutrality.
Article
Chemistry, Physical
Giovanna Lovato, Isabela Mehi Gaspari Augusto, Antonio Djalma Nunes Ferraz Junior, Roberta Albanez, Suzana Maria Ratusznei, Claudia Etchebehere, Marcelo Zaiat, Jose Alberto Domingues Rodrigues
Summary: The study evaluated three different start-up strategies for hydrogen production from thermophilic dark fermentation, with strategy (iii) increasing hydrogen productivity by 39% compared to the others. The combination of high temperature and low pH favored hydrogen-producing routes, potentially boosted by synergy between different bacteria. A total of three 41 m(3) reactors would be needed to treat 3.4 x 10(3) m(3) year(-1) of whey in small-size dairy industry, with the energy produced reaching 14 MWh month(-1).
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Agricultural Engineering
Haoran Wu, Rachel Dalke, Jesse Mai, Mark Holtzapple, Meltem Urgun-Demirtas
Summary: A new anaerobic digestion process based on arrested methanogenesis (AM) was developed to treat high-strength cheese whey and brewery wastewater with simultaneous carboxylic acid production. Experimental results demonstrated that under suitable conditions, high total carboxylic acids concentration could be achieved, with lactate conversion to chain-elongated volatile fatty acid observed. Fed-batch digestion with biomass recycling resulted in a 2-fold increase in VFAs concentration and higher diversity in the microbial consortia.
BIORESOURCE TECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Cristina Salas-Vargas, Luis Brunett-Perez, Valentin Efren Espinosa-Ortiz, Carlos Galdino Martinez-Garcia
Summary: This study evaluated the environmental impacts in the artisan cheese sector in the central region of Mexico through life cycle analysis and carbon footprint calculation, identifying the essentiality of whey management in reducing impacts.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Yagmur Kabakci, Sadiye Kosar, Ozgur Dogan, Fehmi Gorkem Uctug, Osman Atilla Arikan
Summary: This study investigated the effect of electrohydrolysis pretreatment on municipal solid waste. The results showed that applying electrohydrolysis pretreatment increased methane production and reduced the time required for hydrolysis, suggesting it is a promising method to improve anaerobic digestion efficiency.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
K. Bella, Sridhar Pilli, P. Venkateswara Rao
Summary: The effects of ultrasound, ozonation, and enzymatic hydrolysis on increasing the bioavailability of organic matter in cheese whey wastewater (CWW) and biogas production were evaluated. The enzymatic pre-treatment showed the highest methane generation compared to ultrasound and ozonation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Santo Fabio Corsino, Michele Torregrossa, Gaspare Viviani
Summary: This study found that adjusting the inoculum to substrate ratio and the mixture ratio between organic solid waste and sewage sludge can maximize the methane potential from anaerobic co-digestion, with synergistic effects playing an important role in the mixtures.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Chemistry, Multidisciplinary
Francesco da Borso, Alessandro Chiumenti, Giulio Fait, Matia Mainardis, Daniele Goi
Summary: Anaerobic digestion applied to brackish water fish sludges shows promising methane production with the highest BMP achieved at the highest I/S ratio. The research focuses on BMP analysis, revealing the impact of different I/S ratios on methane production and the duration of lag-phase, with further investigations on biomass adaptation to salinity and retention times needed for full-scale application. Ongoing experimental tests are being conducted to explore these areas further.
APPLIED SCIENCES-BASEL
(2021)
Article
Environmental Sciences
Daniele Cecconet, Matia Mainardis, Arianna Callegari, Andrea G. Capodaglio
Summary: According to new paradigms of urban wastewater management, energy savings and resources recovery from sewage will be increasingly important. Anaerobic processes are more energy efficient than conventional aerobic ones and are suitable for recovering embedded organic energy. The study operated a pilot UASB reactor at low temperatures to treat municipal wastewater and evaluated its performance and economic benefits.
Article
Environmental Sciences
Matia Mainardis, Daniele Cecconet, Alessandro Moretti, Arianna Callegari, Daniele Goi, Stefano Freguia, Andrea G. Capodaglio
Summary: This paper critically reviews the application of treated wastewater for agricultural fertigation, and proposes a techno-economic methodology for assessing the sustainability of treated wastewater reuse in agriculture.
ENVIRONMENTAL POLLUTION
(2022)
Article
Green & Sustainable Science & Technology
Matia Mainardis, Silvia Mulloni, Arianna Catenacci, Maila Danielis, Erika Furlani, Stefano Maschio, Daniele Goi
Summary: This study investigated alternative methods to conventional tertiary treatment of pulp and paper wastewater, aiming to enhance the environmental and economic sustainability of industrial wastewater treatment. Cloth filtration showed good performance in removing suspended solids, while adsorption was effective in reducing chemical oxygen demand. Economic analysis suggested that a low-cost adsorbent supply chain is necessary for the economic feasibility of adsorption technology.
Article
Chemistry, Physical
Sajid Hussain, Eleonora Aneggi, Alessandro Trovarelli, Daniele Goi
Summary: This study investigated the treatment of landfill leachate using a heterogeneous Fenton-like oxidation process with a Cu/ZrO2 catalyst. By adjusting reaction conditions such as pH, catalyst dosage, oxidant dosage, temperature, and reaction time, the researchers were able to achieve high removal efficiency of organic compounds. The study also evaluated the degree of oxidation using AOS and COS parameters. The results demonstrated the promising activity of the copper-based catalyst for the treatment of liquid waste.
Review
Thermodynamics
Arianna Catenacci, Gaia Boniardi, Matia Mainardis, Fabian Gievers, Gianluigi Farru, Fabiano Asunis, Francesca Malpei, Daniele Goi, Giovanna Cappai, Roberto Canziani
Summary: This work reviews the integration of anaerobic digestion (AD) with pyrolysis/HTC, focusing on the use of AD digestates as feedstocks for char production. This interconnected approach can enhance the sustainable valorization of digestates in the circular economy. Different substrates and thermochemical technologies are discussed, with an analysis of their effects on char quality. The potential applications of char are presented, along with their advantages and drawbacks. However, limitations such as substrate variability, presence of pollutants, lack of legislative frameworks, and uncertain economic sustainability still hinder the full-scale implementation of digestate-derived char production and utilization.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
Charlene Vance, Matia Mainardis, Francesca Magnolo, Joseph Sweeney, Fionnuala Murphy
Summary: This study integrates system dynamics (SD) thinking with life cycle assessment (LCA) and life cycle costing (LCC) to understand the impact of seagrass meadow degradation on the circular bioeconomy. The results highlight the complexities in stakeholder perspectives and the importance of considering environmental and community impacts in assessing ecosystem services and restoration costs.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Sajid Hussain, Eleonora Aneggi, Clara Comuzzi, Diego Baderna, Daniele Zuccaccia, Alessandro Trovarelli, Daniele Goi
Summary: Landfill leachates are highly contaminated liquid waste and their treatment is challenging. This study focuses on developing simpler and faster tools for evaluating the treated waste and for preliminary screening of Fenton process conditions. Several analytical techniques, including UV-vis spectroscopy, AOX analysis, and H-1 NMR analysis, were used to assess the reduction of toxicity and degradation of contaminants. The results demonstrate the effectiveness of the investigated tool for preliminary evaluation of detoxification efficacy.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Arianna Catenacci, Michela Peroni, Fabian Gievers, Matia Mainardis, Eleonora Pasinetti, Francesca Malpei
Summary: A methodological procedure based on batch experiments was proposed and applied to determine the optimal configuration and ozone dosage for sludge ozonation. The results showed that pre-treatment of sludge at the lowest tested dosage (20mg O-3/g VS) resulted in significant energy, cost, and greenhouse gas emission savings. Sensitivity analyses confirmed the stability of this scenario, but further pilot-scale testing is recommended for verification.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Article
Environmental Sciences
Federico Spizzo, Giovanni Venaruzzo, Matteo Nicolini, Daniele Goi
Summary: Water Distribution Network Partitioning (WDNP) is an effective strategy to improve network management by dividing the existing water distribution network (WDN) into smaller and more homogeneous District Metered Areas (DMAs). The partitioning can be achieved physically by closing pipes or virtually by installing flow meters. Both methods have advantages and disadvantages in terms of network performance and investment cost. This study presents an optimization approach using complex network theory and genetic algorithms (GA) to determine the optimal DMA configuration in terms of cost and network performance.
Article
Environmental Sciences
Matia Mainardis, Carmen Ferrara, Beatrice Cantoni, Camilla Di Marcantonio, Giovanni De Feo, Daniele Goi
Summary: This study evaluates and compares alternative tertiary treatment technologies for pulp and paper wastewater in terms of environmental performance and economic viability. The results show that the scenario involving ozone and granular activated carbon (GAC) performs the best, while the scenario involving ozone alone performs the worst.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
