Article
Green & Sustainable Science & Technology
Liang Chen, Ziwei He, Luxin Yang, Lin Wang, Yangyang Li, Ting Chen, Huan Li
Summary: This study compares four common methods for treating food waste: incineration, anaerobic digestion, composting, and feed processing. The results show that anaerobic digestion is the best treatment option for minimizing carbon emissions, while composting has the highest carbon emissions. In terms of economic performance, feed processing is the best choice, while incineration results in high expenditure.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Green & Sustainable Science & Technology
Salman Soltanian, Soteris A. Kalogirou, Meisam Ranjbari, Hamid Amiri, Omid Mahian, Benyamin Khoshnevisan, Tahereh Jafary, Abdul-Sattar Nizami, Vijai Kumar Gupta, Siavash Aghaei, Wanxi Peng, Meisam Tabatabaei, Mortaza Aghbashlo
Summary: The growing volume of municipal solid waste (MSW) generated worldwide often undergoes open dumping, landfilling, or uncontrolled burning, releasing massive pollutants and pathogens into the soil, water, and air. On the other hand, MSW can be used as a valuable feedstock in biological and thermochemical conversion processes to produce bioenergy carriers, biofuels, and biochemicals in line with the United Nations' Sustainable Development Goals (SDGs). Valorizing MSW using advanced technologies is highly energy-intensive and chemical consuming.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Green & Sustainable Science & Technology
Siswo Sumardiono, Gebyar Adisukmo, Muthia Hanif, Budiyono Budiyono, Heri Cahyono
Summary: The study indicates that controlling the particle size of solid sago waste, biological pretreatment, NaOH pretreatment, and the ratio between solid sago waste and cow rumen can improve biogas production rate, with the 1:1 ratio showing the best results.
Article
Energy & Fuels
Walter Anaya Menacho, Abdul Md Mazid, Narottam Das
Summary: Research on producing biofuel from food waste using a two-stage digester setup has shown promising results in increasing biogas and methane production, with simulations providing valuable data for future industrial-level biogas research and development.
Review
Green & Sustainable Science & Technology
Wenfeng Ye, Jian Lu, Jianfeng Ye, Yanbo Zhou
Summary: The addition of zero-valent iron (ZVI) in anaerobic digestion systems has been shown to improve microbial activity and enhance the long-term stability of digesters, leading to higher methane production. However, challenges remain in designing efficient and cost-effective AD systems due to the variability in operation and digestion substrates. Further studies are needed to better utilize ZVI for enhanced AD performance under different conditions.
JOURNAL OF CLEANER PRODUCTION
(2021)
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
Sara Pardilho, Jose C. Pires, Rui Boaventura, Manuel Almeida, Joana Maia Dias
Summary: This study compares the performance of five different kinetic models in describing methane production during the digestion of marine macroalgae waste, and finds that the multi-Gompertz model can predict methane yield more accurately.
BIORESOURCE TECHNOLOGY
(2022)
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)
Review
Engineering, Environmental
Sonil Nanda, Franco Berruti
Summary: This paper reviews various waste-to-energy technologies, including traditional thermal incineration and modern hydrothermal incineration, as well as thermochemical and biological conversion technologies for the transformation of solid waste into biofuel products. Furthermore, it comprehensively discusses the current status, opportunities, and challenges of municipal solid waste management.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Review
Biotechnology & Applied Microbiology
Priya Prajapati, Sunita Varjani, Reeta Rani Singhania, Anil Kumar Patel, Mukesh Kumar Awasthi, Raveendran Sindhu, Zengqiang Zhang, Parameswaran Binod, Sanjeev Kumar Awasthi, Preeti Chaturvedi
Summary: Industrialization and urbanization have led to an increase in energy demand, voluminous waste generation, and environmental impacts, making efficient solid waste management strategies a growing trend. Public awareness is crucial for proper waste management. Recent technological advancements focus on minimizing waste content and generating electricity, with techniques such as incineration and gasification being widely utilized.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Environmental Sciences
Chuanren Qi, Yiran Zhang, Sumeng Jia, Rui Wang, Yiyu Han, Wenhai Luo, Guoxue Li, Yangyang Li
Summary: This study investigated the effects of anaerobic digestion duration on methane yield and net energy production during food waste treatment. The results showed that 21 days of anaerobic digestion achieved the most effective use of carbon in the process.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Green & Sustainable Science & Technology
Bright Obuobi, Gibbson Adu-Gyam, Mavis Adjei, Emmanuel Nketiah
Summary: This study analyzes the prospects of waste-to-energy in Kumasi and evaluates the economic viability of landfill gas (LFG) and anaerobic digestion (AD) projects. The findings show that anaerobic digestion technology has the highest potential for power generation, but it is less economically feasible compared to landfill gas energy in Kumasi.
ENERGY FOR SUSTAINABLE DEVELOPMENT
(2022)
Article
Environmental Sciences
Vinay Kumar Tyagi, Aparna Kapoor, Pratham Arora, J. Rajesh Banu, Sukanya Das, Shubham Pipesh, A. A. Kazmi
Summary: A feasibility analysis was conducted on a 100 tons per day MBT plant, which showed promising results in terms of energy and material recovery for municipal solid waste valorization. The plant's revenue is stable with excellent OPEX, and utilizing RDF locally can further reduce costs, in alignment with global benchmarks.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Review
Environmental Sciences
A. Saravanan, Ponnusamy Senthil Kumar, Tran Cam Nhung, B. Ramesh, S. Srinivasan, Gayathri Rangasamy
Summary: The rapid growth of industrialization, urbanization, and population has worsened the problem of municipal solid waste generation. Biological treatment of solid waste followed by biogas and biomethane generation is one of the many sustainable energy source options. This review discusses the system for converting MSW to energy and waste-derived circular bioeconomy, aiming to address the goals of zero waste society and sustainable development. The biological treatment technologies for energy production are examined, along with their challenges and perspectives in this field of research.
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
Engineering, Environmental
Emma Deniere, Ram Prasath Alagappan, Herman Van Langenhove, Stijn Van Hulle, Kristof Demeestere
Summary: The study found that the ozone-activated peroxymonosulfate process has a high removal efficiency for trace organic contaminants in water, especially in surface water and groundwater. Experimental results showed that hydroxyl radicals rather than sulfate radicals mainly contribute to the removal of TrOCs induced by the ozone activation process.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Xuetong Yang, Pieter-Jan De Buyck, Rui Zhang, Dave Manhaeghe, Hao Wang, Licai Chen, Yunliang Zhao, Kristof Demeestere, Stijn W. H. Van Hulle
Summary: This study evaluated the feasibility of using packed bubble columns in the treatment of biotreated landfill leachate, and found that packed bubble columns have higher O3 utilization efficiency and lower energy consumption.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Chemical
Rui Zhang, Lutian Wang, Fida Hussain Lakho, Xuetong Yang, Veerle Depuydt, Wouter Igodt, Hong Quan Le, Diederik P. L. Rousseau, Stijn Van Hulle
Summary: This study investigates the effectiveness of iron oxide coated sand (IOS) granules, a recycled waste product, in removing phosphorus from goat farm wastewater. The results demonstrate that IOS granules have a high specific surface area and good phosphorus adsorption capacity, indicating their potential application in wastewater treatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Environmental Sciences
Ze Liu, Jianqun Wang, Xuetong Yang, Qian'en Huang, Kecheng Zhu, Yajiao Sun, Stijn Van Hulle, Hanzhong Jia
Summary: A large amount of microplastics and toxic substances were found in the leachates of disposable plastic face masks (DPFs). These DPFs leachates were confirmed to cause cytotoxicity and oxidative stress, and environmentally persistent free radicals (EPFRs) were generated. Surgical masks were shown to have higher risk than N95 respirators after exposure to water, releasing more microplastics, metals, and organic compounds, and generating more EPFRs.
ENVIRONMENTAL POLLUTION
(2022)
Article
Engineering, Environmental
Yongyuan Yang, Alex Ricoveri, Kristof Demeestere, Stijn Van Hulle
Summary: The complexity and dynamic characteristics of landfill leachate pose challenges for its treatment. A combined treatment process, including a one-stage partial nitrification-Anammox process, an O-3/H2O2 process, and a granular activated carbon filtration (GAC) process, was investigated. A surrogate-based ozone dose control strategy for the O-3/H2O2 process was evaluated. Results showed that this three-stage process achieved high removal rates of total nitrogen, COD, and micropollutants, satisfying discharge requirements. Real-time control of ozone dosing for COD removal was achieved through monitoring UVA(254) reduction. Cost analysis indicated that the combination of O-3/H2O2 and GAC as the main steps was more cost-effective in post-treatment. A dynamic operation strategy in response to leachate changes was recommended.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Fida Hussain Lakho, Asif Qureshi, Wouter Igodt, Hong Quan Le, Veerle Depuydt, Diederik P. L. Rousseau, Stijn W. H. Van Hulle
Summary: This study conducted a life cycle impact assessment of two different decentralized water treatment systems in Belgium using the Life Cycle Assessment tool. The results showed that these systems had a lower impact on the environment compared to their conventional alternatives in most impact categories. Therefore, decentralized water treatment systems can be considered environmentally beneficial under certain conditions.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Article
Environmental Sciences
Yongyuan Yang, Alex Ricoveri, Kristof Demeestere, Stijn Van Hulle
Summary: This study investigates the impact of preceding ozonation on the adsorption of COD and MPs in leachate, and evaluates a new surrogate-based model for predicting MPs breakthrough. The results show that ozone reduces the adsorption affinity of COD and increases the adsorption of MPs in leachate. Furthermore, the developed model demonstrates good applicability for predicting MPs breakthrough.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Fida Hussain Lakho, Asif Qureshi, Laura De Donno Novelli, Veerle Depuydt, Teun Depreeuw, Stijn W. H. Van Hulle, Diederik P. L. Rousseau
Summary: Nature-based greywater treatment and reuse is an emerging option in urban areas. This study reports the performance of a green wall system called Total Value Wall (TVW) installed in a terrace house in Gent, Belgium for greywater treatment and reuse. The results indicate that the adapted TVW system can effectively treat greywater with higher pollutant loading rates, although issues with leakage and energy use need to be addressed.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Hao Wang, Siyu Zhang, Can He, Run Yuan, Xu Wu, Shaoqing Guo, Xuwen He, Stijn W. H. Van Hulle
Summary: The ozone-based advanced oxidation process is efficient in degrading refractory organics in wastewater effluent, but its high energy consumption hinders widespread application. This study investigates the use of pre-coagulation enhanced catalytic ozonation for the treatment of biologically treated coking wastewater, and finds that pre-coagulation significantly improves the removal efficiency of organic pollutants.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Environmental
Emma Deniere, Herman Van Langenhove, Stijn Van Hulle, Kristof Demeestere
Summary: Ozone-activated peroxymonosulfate process (O3/PMS) is a promising method for the removal of trace organic contaminants (TrOCs) from wastewater, but its effectiveness is limited compared to ozone oxidation. Spectral surrogate models based on UV absorbance and fluorescence can be used to predict TrOCs removal.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Hao Wang, Siyu Zhang, Xuwen He, Yongyuan Yang, Xuetong Yang, Stijn W. H. Van Hulle
Summary: This study compared the performance of single ozonation and two ozone-based advanced oxidation processes (AOPs) for polishing biotreated landfill leachate. The results showed that catalytic ozonation enhances direct ozone oxidation, while the O3/H2O2 process promotes indirect oxidation. The removal of UV-quenching substances correlated well with the elimination of MPs, providing a predictive model for high-strength leachate. The energy consumption of the processes varied depending on the desired COD removal efficiency.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Xuetong Yang, Changtao Chen, Tao Zhang, Xiang Tian, Rui Zhang, Dave Manhaeghe, Yunliang Zhao, Shaoxian Song, Kristof Demeestere, Stijn W. H. Van Hulle
Summary: This study applied two minerals, lava rock and expanded clay aggregate (ECA), to build mineral-packed bubble columns (LBC and EBC) for enhancing O3 mass transfer and increasing the removal of micropollutants in bio-treated landfill leachate. The O3 gas-liquid mass transfer coefficient (kLa) and O3 decomposition coefficient (kd) were significantly increased in EBC and LBC compared to a non-packed bubble column (BC). The mineral-packed columns showed improved removal of O3-recalcitrant compounds and enhanced UV254 reduction, resulting from improved O3 mass transfer and the catalytic function of the minerals.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Rui Zhang, Xianchang Liu, Lutian Wang, Pan Xu, Kai Li, Xiaoxiao Chen, Rong Meng, Yuewu Pu, Xuetong Yang, Diederik P. L. Rousseau, Stijn W. H. Van Hulle
Summary: A novel WABR-CW system was developed to address the challenge of nutrient removal in decentralized wastewater treatment. The lab-scale experiment showed high removal efficiencies for COD (85-98%), NH4+-N (100%), TN (60-90%), and TP (85%-95%). The CW improved overall performance and provided denitrification capacity when the OLR was not optimal for the WABR.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Changtao Chen, Chuanlong Ma, Yongyuan Yang, Xuetong Yang, Kristof Demeestere, Anton Nikiforov, Stijn Van Hulle
Summary: A novel cascade reactor design was used to remove micropollutants from secondary municipal wastewater effluent, and the parameters such as gas flow rate, water flow rate, and discharge power greatly influenced the performance of the reactor. The utilization of different reactive oxygen species was improved by introducing an ozonation chamber preceding a dielectric barrier discharge plasma reactor. This study provides valuable insights and optimal settings for an energy-efficient removal of micropollutants from wastewater.
Article
Environmental Sciences
Nazia Hassan, Jente Lezy, Dries Parmentier, Henk Van Hulle
Summary: Electrocoagulation flotation (ECF) is a promising compact alternative technology for municipal wastewater treatment, achieving significant pollutant removal efficiencies. Both iron (Fe) and aluminum (Al) anodes showed promising results in treating rainy weather wastewater, with Fe ECF performing better at low current density.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)