Article
Energy & Fuels
Robin Faust, Panida Aonsamang, Jelena Maric, Alyona Tormachen, Martin Seemann, Pavleta Knutsson
Summary: Thermal conversion of automotive shredder residue (ASR) using indirect fluidized bed gasification was conducted, with a focus on the interactions between the bed material and the ASR ash. Iron deposition onto olivine particles was observed, potentially increasing their oxygen-carrying ability. A significant portion of the particles in the bed originated from the ASR ash, containing Fe, Si, Zn, Ti, Cu, with some particles exhibiting a hollow morphology suggesting a melt state during formation.
Article
Chemistry, Multidisciplinary
Sepideh Hemati, Rumana Hossain, Veena Sahajwalla
Summary: The study proposed a sustainable solution to utilize mixed plastics from automotive waste residue to produce nano silicon carbide through selective thermal transformation, laying the foundation for turning complex waste into high-value, high-performance materials.
Article
Green & Sustainable Science & Technology
Sandhya Kuruvalan Vijayan, Mahmud Arman Kibria, Md Hemayet Uddin, Sankar Bhattacharya
Summary: A new procedure for ASR pretreatment was proposed to facilitate feeding during pyrolysis, with thermal breakdown characteristics and kinetic data of ASR solids evaluated under different particle sizes and heating rates. DRIFTS results and heating rate algorithm developed are valuable for the development of a pyrolysis process for pretreated ASR.
Article
Engineering, Chemical
Suyang Pan, Jiliang Ma, Daoyin Liu, Xiaoping Chen, Cai Liang
Summary: This paper studies the liquid transport behaviors in a top-sprayed fluidized bed using bed conductance analysis, pressure fluctuation analysis, and bubble image processing. The results show that liquid initially gets trapped in agglomerates before converting to free liquid and spreading from the upper-middle bed to the bottom bed. The disintegrating pattern of agglomerates affects the increase and saturation of free liquid in the bed. The liquid transport process is accelerated by increasing superficial air velocity and particle diameter, while it slows down with increased liquid viscosity and surface tension.
Article
Environmental Sciences
Haiping Xiao, Jinlin Ge, Xinyao Li, Dahai Yan, Zhong Liu
Summary: During combustion, a large proportion of elements such as chromium, arsenic, and lead are concentrated in fly ash or bottom ash, with only a small amount being captured by the desulfurization system or entering the environment. The blending of antibiotic residues has little effect on the elemental composition of coal, but increasing the blending ratio may be harmful to the environment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Chemical
Bo Zhang, Mengyao Guo, Zongsheng Sun, Enkhsaruul Byambajav, You Zhou, Junwei Guo, Pengfei Zhao, Zhenxing Zhang, Xuan Wang, Guanghui Yan
Summary: The apparent viscosity of binary particles decreases with the increase in coal powder content, and also drops by half with increase in gas speed. Adjusting gas velocity and magnetite powder content can effectively reduce the apparent viscosity and improve separation efficiency. A modified model for predicting the apparent viscosity of binary particles showed good performance with an overall standard deviation of 13.00% from experimental results.
Article
Green & Sustainable Science & Technology
Xiaoyu Fan, Luna Guo, Wei Ji, Liubiao Chen, Junjie Wang
Summary: Liquid air energy storage (LAES) is a popular technology for integrating renewable energy into the power grid. A novel LAES system based on fluidized bed heat transfer (FB-LAES) using quartz sand as the energy storage material provides a more efficient alternative to traditional solid-phase and liquid-phase cold energy storage.
Article
Energy & Fuels
Ivan Gogolev, Toni Pikkarainen, Juho Kauppinen, Carl Linderholm, Britt-Marie Steenari, Anders Lyngfelt
Summary: Chemical looping combustion (CLC) of biomass is a promising technology for power generation with integrated carbon capture, but the alkali content of biomass may lead to bed agglomeration and oxygen carrier absorption issues. Studies have shown that gas-phase alkali emissions in CLC operation can be up to 15 times higher than in OCAC operation, mainly due to steam accelerating the decomposition of alkali compounds in the biomass.
Article
Energy & Fuels
Antonio Coppola, Fiorella Massa, Fabrizio Scala
Summary: In the context of carbon capture and utilization technologies and bio-energy transition, catalytic methanation is considered as an interesting pathway for producing synthetic methane for energy storage. Synthetic methane has significant advantages such as existing infrastructure, social acceptance, and widespread usage. The production of synthetic methane is being investigated by the scientific community.
Article
Engineering, Environmental
Yanjiao Li, Kun Hong, Chenyang Zhou, Yuemin Zhao, Chenlong Duan, Liang Dong
Summary: This study investigates the mechanism of vibration energy transfer and dissipation in fluidized beds, and describes the response mechanism of the beds to resonance effect. An evaluation index for energy dissipation rate is proposed, and a new natural frequency model is established to accurately predict the performance of fluidized beds.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
M. Suarez-Almeida, A. Gomez-Barea, A. F. Ghoniem, C. Pfeifer
Summary: A new approach utilizing concentrating solar energy and solid particles as thermal energy carrier and storage media for allothermal steam-gasification of biomass in a dual fluidized bed gasifier is presented. The study shows the significant flexibility provided by the separation and storage of char in the system. Results indicate the huge scale-up potential of this new solar gasification technology in the short to medium term.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Jun Xie, Wenqi Zhong, Yingjuan Shao, Guanwen Zhou
Summary: A comprehensive three-dimensional model based on multiphase particle-in-cell approach has been developed to simulate the co-gasification process of coal and wood in a dual fluidized bed system. The study shows that increasing coal ratio accelerates steam gasification, leading to higher H-2 and CO concentrations in the product gas, while the tar content decreases and emissions of NH3 and H2S increase.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Energy & Fuels
Anna Magdalena Mauerhofer, Stefan Mueller, Florian Benedikt, Josef Fuchs, Alexander Bartik, Hermann Hofbauer
Summary: The study suggests that the treatment of different biogenic fuels in a dual fluidized bed gasification process can affect the composition of the product gas, with alkali metals in biomass ash favoring CO production, and the addition of limestone increasing H2 and CO contents.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Engineering, Chemical
Yanjiao Li, Chenyang Zhou, Lei Yang, Guannan Lv, Yongxin Ren, Yuemin Zhao
Summary: Pulsed fluidized beds can reduce bubble generation, improve coal separation accuracy. Reasonable regulation and prediction of bed density are crucial. Proposed novel method for predicting bed density, with less than 10% error compared to experimental results. This work offers theoretical foundation for effective coal separation with pulsed gas-solid fluidized beds.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Energy & Fuels
Alexander Bartik, Florian Benedikt, Andreas Lunzer, Constantin Walcher, Stefan Mueller, Hermann Hofbauer
Summary: This paper investigates the thermodynamics of methanation in a fluidized bed reactor and finds that the sorption enhanced reforming process has high flexibility and carbon utilization efficiency. It allows nearly complete methanation without the need for a CO(2) separation step or steam addition, increasing performance and reducing gas upgrading.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Chemistry, Physical
Margarida Galhetas, Marta A. Andrade, Ana S. Mestre, Ekoe Kangni-foli, Maria J. Villa de Brito, Moises L. Pinto, Helena Lopes, Ana P. Carvalho
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2015)
Article
Engineering, Environmental
Marcia Freire, Helena Lopes, Luis A. C. Tarelho
Article
Chemistry, Multidisciplinary
Ana S. Mestre, Emil Tyszko, Marta A. Andrade, Margarida Galhetas, Cristina Freire, Ana P. Carvalho
Article
Engineering, Environmental
D. Godinho, D. Dias, M. Bernardo, N. Lapa, I. Fonseca, H. Lopes, F. Pinto
JOURNAL OF HAZARDOUS MATERIALS
(2017)
Article
Chemistry, Analytical
Paula Teixeira, Sandra Calisto, Helena Lopes, Maria Trancoso
ACCREDITATION AND QUALITY ASSURANCE
(2015)
Article
Engineering, Environmental
Margarida Galhetas, Ana S. Mestre, Moises L. Pinto, Ibrahim Gulyurtlu, Helena Lopes, Ana P. Carvalho
CHEMICAL ENGINEERING JOURNAL
(2014)
Article
Chemistry, Physical
Rui Barbosa, Nuno Lapa, Helena Lopes, Annika Guenther, Diogo Dias, Benilde Mendes
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2014)
Article
Chemistry, Physical
Margarida Galhetas, Ana S. Mestre, Moises L. Pinto, Ibrahim Gulyurtlu, Helena Lopes, Ana P. Carvalho
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2014)
Article
Chemistry, Physical
P. Partidario, R. Aguiar, P. Martins, C. M. Rangel, I Cabrita
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Chemistry, Multidisciplinary
Helena Lopes, Susana Proenca
APPLIED SCIENCES-BASEL
(2020)
Review
Energy & Fuels
Paula Teixeira, Carmen Bacariza, Patricia Correia, Carla I. C. Pinheiro, Isabel Cabrita
Summary: Hydrogen is a versatile vector for various applications, and the capture of CO2 during production process is crucial in minimizing carbon footprint. Steam methane reforming and coal gasification are the main technologies for H-2 production, and in situ CO2 capture is especially profitable as it contributes to additional production of H-2.
Proceedings Paper
Biotechnology & Applied Microbiology
Filomena Pinto, Rui Andre, Helena Lopes, Diogo Neves, Francisco Varela, Joao Santos, Miguel Miranda
ICHEAP12: 12TH INTERNATIONAL CONFERENCE ON CHEMICAL & PROCESS ENGINEERING
(2015)
Proceedings Paper
Biotechnology & Applied Microbiology
Filomena Pinto, Rui Andre, Helena Lopes, Diogo Neves, Francisco Varela, Joao Santos, Miguel Miranda
ICHEAP12: 12TH INTERNATIONAL CONFERENCE ON CHEMICAL & PROCESS ENGINEERING
(2015)
Article
Thermodynamics
Pedro Azevedo, Isabel Cabrita, Carlos Pinho
COMPUTATIONAL THERMAL SCIENCES
(2014)
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.