Article
Biotechnology & Applied Microbiology
Vinay Kumar Tyagi, Akansha Bhatia, Kengo Kubota, Ankur Rajpal, Banafsha Ahmed, Abid Ali Khan, A. A. Kazmi, Manish Kumar
Summary: Anaerobic digestion is a process where anaerobic microbes transform organic matter into biogas and nutrient-rich digestate, with different microbial groups responding differently to varying operating conditions. The dynamic performance of microbial community development is closely related to digester functionality and operational states.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Review
Environmental Sciences
Fernanda E. Ibarra-Esparza, Martin Esteban Gonzalez-Lopez, Juanpablo Ibarra-Esparza, Gary Ossmar Lara-Topete, Carolina Senes-Guerrero, Annabel Cansdale, Sarah Forrester, James P. J. Chong, Misael Sebastian Gradilla-Hernandez
Summary: This systematic review investigates the implementation of anaerobic digestion (AD) for treating organic waste in developing countries. The study finds that there is a significant difference in the maturity level of AD systems between developed and developing countries, mainly due to the economic capacity of developed countries. The review also identifies practices used in developed countries that could be beneficial for the large-scale implementation of AD systems in developing countries, such as developing high-value products, forming partnerships with local industries, and exploring different pretreatment technologies. Additionally, the analysis shows that capital and operational costs tend to be higher for developing countries due to the need for importation of materials and equipment. The review highlights technical, economical, and political challenges for the implementation of AD at a large scale in developing countries.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Madhu Kumari, Munish K. Chandel
Summary: Utilizing municipal solid waste (MSW) and sewage sludge (SS) as a source of renewable energy is crucial for achieving sustainable and integrated MSW management. Co-digestion of SS and organic fraction of MSW (OFMSW) can mitigate the challenges of mono-digestion and enhance methane production. This study aimed to optimize the mix ratio for anaerobic co-digestion of OFMSW and SS, and the results showed that increasing the proportion of SS in the mix ratio significantly increased methane yield. These findings highlight the potential of co-digesting SS and OFMSW as a preferable alternative for renewable energy generation and organic waste management.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Agricultural Engineering
Nadiia Nikulina, Seda Uslu, Andreas Lemmer, Nuri Azbar, Hans Oechsner
Summary: The anaerobic co-digestion experiment found that the optimal methane yield was achieved with a 20/80 ratio of organic solid waste/solid inoculum with liquid inoculum under thermophilic conditions. Addition of chicken manure positively influenced the start-up phase and helped maintain pH within the optimal range.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Rokaya Bouaita, Kerroum Derbal, Antonio Panico, Floriana Iasimone, Ludovico Pontoni, Massimiliano Fabbricino, Francesco Pirozzi
Summary: A large amount of orange peel waste is produced every year due to high orange production worldwide. This waste is often dumped without proper treatment, causing environmental issues. Anaerobic digestion is suggested as an effective treatment for orange peel waste, but the high content of limonene can inhibit the biological activity. Anaerobic co-digestion with organic fraction of municipal solid waste can reduce the limonene concentration. The limonene content is directly related to the organic loading rate, and the maximum stable organic loading rate was found to be 2 g(VS)(L-1.day(-1)).
BIOMASS & BIOENERGY
(2022)
Article
Environmental Sciences
Takum Nalo, Sonam Paliya, Ashootosh Mandpe, Nabam Rich, Ajay Bharti, Sunil Kumar
Summary: This study investigates the anaerobic digestion of municipal solid waste and lignocellulosic waste and finds that the best combination for methane production is a 1:1 ratio of organic fraction of municipal solid waste to lignocellulosic waste. It is also discovered that mesophilic conditions play a crucial role in the digestion process.
Article
Green & Sustainable Science & Technology
Afsane Sedighi, Mohsen Karrabi, Bahar Shahnavaz, Morteza Mostafavinezhad
Summary: This study investigated the potential for biogas production from anaerobic codigestion of the organic fraction of municipal solid waste and sewage sludge under mesophilic conditions. The results showed that the best outputs were achieved at TS = 5% and ISR = 2, with the highest biogas yield and methane production.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Energy & Fuels
Omid Norouzi, Animesh Dutta
Summary: This study investigated the current status and opportunities of anaerobic digestion plants for organic waste biogas production in Canada. Through data collection and comprehensive analysis, key factors and challenges for the growth of the biogas industry in Canada were revealed, and improvement strategies and future development directions were proposed.
Review
Environmental Sciences
Banafsha Ahmed, Vinay Kumar Tyagi, Kaoutar Aboudi, Azmat Naseem, Carlos Jose Alvarez-Gallego, Luis Alberto Fernandez-Guelfo, A. A. Kazmi, Luis Isidoro Romero-Garcia
Summary: This paper reviews the characteristics of OFMSW and thermal pre-treatment methods, discusses the advantages and limitations of anaerobic digestion, and explores the impact of different thermal pre-treatments on biogas yield. It concludes that the 55°C and TPAD processes demonstrate more effective performance at low HRTs and high OLRs.
Article
Environmental Sciences
Banafsha Ahmed, Pallavi Gahlot, Gowtham Balasundaram, Vinay Kumar Tyagi, J. Rajesh Banu, Vivekanand Vivekanand, A. A. Kazmi
Summary: This study investigated the semi-continuous anaerobic co-digestion of organic fraction of municipal solid waste and sewage sludge. The results showed that thermal-alkali pretreatment yielded higher methane production and organic removal compared to thermal pretreatment and control. Energy balance analysis revealed that thermal-alkali pretreatment also had the highest positive energy balance.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Najoua Mlaik, Fatma Karray, Sami Sayadi, Firas Feki, Sonia Khoufi
Summary: The study examined the anaerobic digestion of organic fraction of municipal solid waste (OFMSW) and its impact on the microbial community. The results showed that the biogas yield decreased with increased organic loading rates (OLRs) and the microbial community composition changed during the digestion process.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Banafsha Ahmed, Shivi Tyagi, Rajesh Banu, A. A. Kazmi, Vinay Kumar Tyagi
Summary: This study aims to mitigate the inhibitory effects of high-temperature thermal pretreatment on anaerobic digestion by using carbon-based conductive materials and enhance methane generation. The results show that the addition of conductive materials significantly increases biogas yield and decreases the concentration of recalcitrant compounds.
Review
Green & Sustainable Science & Technology
M. F. M. A. Zamri, Saiful Hasmady, Afifi Akhiar, Fazril Ideris, A. H. Shamsuddin, M. Mofijur, I. M. Rizwanul Fattah, T. M. Mahlia
Summary: This article provides a comprehensive review of anaerobic digestion (AD) process using the organic fraction of municipal solid waste (OFMSW) substrate. Key factors affecting digestion efficiency include the hydrolysis phase and process conditions. Solid-state anaerobic digestion (SSAD) is the most suitable method for OFMSW, with proper parameter selection being crucial for process feasibility and economic sustainability.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Engineering, Environmental
G. Chinellato, F. Battista, D. Bolzonella, C. Cavinato
Summary: An innovative layout promoting the use of small, decentralised AD plants was proposed in this study, aiming to achieve stable processing and efficient gas production by treating high solid content source-separated OFMSW in a single-stage reactor.
Article
Food Science & Technology
Nour El Houda Chaher, Abdallah Nassour, Moktar Hamdi, Michael Nelles
Summary: The study suggested using cost-effective additives from different sectors to boost semi-continuous food waste anaerobic digestion. By combining agricultural and industrial waste as co-substrates, significant improvements in methane yield and process performance were observed. Different substrates under specific experimental conditions provided diverse alternatives for decision makers to implement sustainable organic waste management systems.
Article
Energy & Fuels
Jordi Llimos, Oscar Martinez-Avila, Elisabet Marti, Carlos Corchado-Lopo, Laia Llenas, Teresa Gea, Sergio Ponsa
Summary: This study demonstrates a two-stage approach for using lignocellulolytic enzymes produced from low-cost sources to hydrolyze brewer's spent grain and obtain sugar-rich hydrolysates as feedstock for polyhydroxyalkanoate (PHA) production. The highest xylanase activities were observed from Aspergillus niger and Thermoascus aurantiacus strains, while A. niger extracts showed the most effective sugar release from brewer's spent grain. The sugar-rich hydrolysate obtained with A. niger served as a carbon source for PHA production by using Cupriavidus necator strain, resulting in maximum PHA yield after 48 hours.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Environmental Sciences
Esther Molina-Penate, Nil Arenos, Antoni Sanchez, Adriana Artola
Summary: This paper explores an alternative method for utilizing the organic fraction of waste by enzymatic hydrolysis to obtain sugar-rich fraction for liquid fermentation and partially hydrolyzed solid for solid-state fermentation. The pH of the solid substrate was modified using alkaline cosubstrates, and the growth and sporulation of Bacillus thuringiensis were achieved. This valorization pathway aligns with the concept of urban biorefineries.
WASTE AND BIOMASS VALORIZATION
(2023)
Article
Engineering, Chemical
Edgar Ricardo Oviedo-Ocana, Jonathan Soto-Paz, Viviana Sanchez-Torres, Antoni Sanchez
Summary: This study investigated the impact of incorporating processed food waste, unprocessed food waste, sawdust, phosphate rock, and a specific bacterial inoculum on the composting process and product quality of green waste. The addition of food waste, sawdust, phosphate rock, and the inoculum increased the degradation of lignocellulose, reducing processing time. The effect of the inoculum was compared between laboratory-scale reactors and pilot-scale piles.
Article
Agricultural Engineering
Raquel Barrena, Maria del Carmen Vargas-Garcia, Paula Catacora-Padilla, Teresa Gea, Ahmad Abo Markeb, Javier Moral-Vico, Antoni Sanchez, Xavier Font, Thomas J. Aspray
Summary: The effect of magnetite nanoparticles and nanocomposites on overloaded anaerobic reactors was evaluated. Both nanomaterials were able to recover methane production within 40 days in granular sludge systems. Magnetite nanoparticles at various doses also recovered the process in flocculent sludge systems between 30 and 50 days. The presence of nanomaterials reversed the inhibition caused by volatile fatty acids and promoted the growth of certain microorganisms.
BIORESOURCE TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Brayan Alexis Parra-Orobio, Jonathan Soto-Paz, Anulfo Ramos-Santos, Keiner Fernando Sanjuan-Quintero, Rossember Saldana-Escorcia, Isabel Cristina Dominguez-Rivera, Antoni Sanchez
Summary: The increasing pressure on water resources due to population growth and high water consumption has led to water stress, especially in urban areas from tropical developing countries. The Total Water Footprint (WFtotal) and the Environmental Sustainability Index (SIblue) are holistic water management tools that help identify pressures over water resources. This study assessed the WFtotal and its components in low-income households in Colombia, identifying the activities with high environmental impact and the water quality in the receiving wetland. The results showed a high WFgreen and the scarcity scenarios regarding water quality and sedimentation in the Baquero wetland according to the SIblue.
Editorial Material
Engineering, Chemical
Antoni Sanchez
Review
Energy & Fuels
Seyed Alireza Vali, Javier Moral-Vico, Xavier Font, Antoni Sanchez
Summary: This review discusses a key issue in the purification of biogas, which is the removal of siloxane. The sensitivity of adsorbents to water and their regeneration ability are analyzed in depth, along with factors such as textural properties, surface functional groups, and hydrophobicity. Traditional adsorbents such as activated carbon, silica gel, and aluminosilicates, as well as emerging adsorbents like metal organic frameworks, graphene oxides, and waste-derived materials, are studied in terms of reusability and water tolerance. Metal organic frameworks show high selectivity, adsorption capacity, and efficient regeneration, making them advantageous in this field.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Review
Green & Sustainable Science & Technology
Cristina Casals Miralles, Debora Barioni, Maria Serena Mancini, Joan Colon Jord, Merce Boy Roura, Sergio Ponsa Salas, Laia Llenas Argelaguet, Alessandro Galli
Summary: Tourism puts pressure on the environment and is vulnerable to global warming. Research on tourism impacts has increased, but there is a lack of specific guidelines and data, making it difficult to obtain reliable results. This paper discusses the use of Footprint family indicators in tourism and highlights the lack of consensus and specific data in current research. Food production and transportation are identified as the main drivers of environmental burdens in tourism. The Footprint indicators help understand the trade-offs between environmental effects and can be used to prioritize sustainability efforts. The study also analyzes the influence of services provided to different rated tourism experiences and compares the pressure exerted by visitors and the local population.
JOURNAL OF CLEANER PRODUCTION
(2023)
Review
Engineering, Environmental
E. R. Oviedo-Ocana, C. Abendroth, I. C. Dominguez, A. Sanchez, C. Dornack
Summary: This study systematically reviews LCA studies in biowaste and/or green waste composting. The results show that applying LCA in composting facilities faces challenges, including extensive information required, lack of standardization on initial assumptions, definition of system boundaries, and high diversity of existing composting technologies.
Article
Chemistry, Multidisciplinary
Ahmad Abo Markeb, Javier Moral-Vico, Antoni Sanchez, Xavier Font
Summary: The present study synthesized a novel nanocomposite (Fe3O4@CS@CMC-SiNH2) for the removal of lead (II) from wastewater. The synthesized nanocomposite showed superior adsorption performance with a maximum adsorption capacity of 555.56 mg(Pb(II))/g(NC), fast achievement of adsorption equilibrium, and favorable monolayer chemisorption. The nanocomposite also exhibited high efficiency in the removal of lead (II) ions in the absence and presence of other contaminants, and showed satisfactory reusability for multiple cycles of the adsorption-desorption process.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Seyed Alireza Vali, Ahmad Abo Markeb, Javier Moral-Vico, Xavier Font, Antoni Sanchez
Summary: Methane and carbon dioxide are the main contributors to global warming, with the methane effect being 25 times more powerful than carbon dioxide. Converting methane to methanol allows for energy storage. In recent years, a new generation of catalysts has emerged, enabling the transformation of methane to methanol under mild conditions with higher conversion and selectivity.
Article
Biotechnology & Applied Microbiology
Brayan Alexis Parra-Orobio, Jonathan Soto-Paz, Edgar Ricardo Oviedo-Ocana, Seyed Alireza Vali, Antoni Sanchez
Summary: This study reviews the recent literature data on the application of biochar (BC) in anaerobic digestion (AD). The review identifies several challenges and areas for further research, including increasing the use of BC in developing countries, studying its effects under psychrophilic conditions, optimizing the process using machine learning or robust models, conducting life cycle and technical-economic analysis, studying its effects on agronomic characteristics, and understanding its impact on nitrogen dynamics and microbial consortia.
Review
Engineering, Chemical
Roberto Carlos Solano Porras, Adriana Artola, Raquel Barrena, Golafarin Ghoreishi, Cindy Ballardo Matos, Antoni Sanchez
Summary: This study reviews the processes and production methods of natural biostimulants (NBs) produced through solid-state fermentation (SSF) from organic waste, highlighting their potential for improving agricultural productivity and promoting sustainable agriculture. The effects of NBs on crops and the challenges associated with their production and application are summarized. The importance of standardizing production processes, optimizing fermentation conditions, and assessing their effects on different crops is emphasized. Future research areas, such as enhancing production efficiency and evaluating the effectiveness of SSF-produced NBs in different agricultural systems, are introduced. In conclusion, SSF-produced NBs offer a promising alternative for sustainable agriculture, but further research and development are needed to maximize their efficacy and enable large-scale implementation.
Article
Agronomy
Carlos Solano, Adriana Artola, Raquel Barrena, Cindy Ballardo, Antoni Sanchez
Summary: This study investigated the effects of exogenous application of indole-3-acetic acid (IAA) as a growth regulator in onion cultivation and found that different concentrations of IAA had a significant impact on onion growth and quality.
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)
