Article
Energy & Fuels
Madiyar Aidabulov, Daulet Zhakupov, Khabiba Zhunussova, Aknur Temireyeva, Dhawal Shah, Yerbol Sarbassov
Summary: This study analyzed the thermochemical properties of sewage sludge and conducted experiments on the co-combustion of sewage sludge and coal. The results showed that the calorific value of the sludge sample was comparable to that of coal samples, and there were differences in NOx emissions between mono-combustion and co-combustion processes. The findings of this study are valuable for developing sustainable disposal methods for municipal sewage sludge.
Article
Green & Sustainable Science & Technology
Malgorzata Wilk, Maciej Sliz, Boguslaw Lubieniecki
Summary: Hydrothermal co-carbonization of sewage sludge and fuel additives can improve the dewaterability of hydrochar for energy production. The addition of biomass during the process significantly enhances the properties of hydrochar and combustion process.
Article
Energy & Fuels
Burak Ulusoy, Bozidar Anicic, Weigang Lin, Bona Lu, Wei Wang, Kim Dam-Johansen, Hao Wu
Summary: This study investigated the interactions in NOX chemistry during biomass co-combustion, finding that the effect varies with different biomass fuels and ash characteristics. The catalytic effect of ash on NO formation is influenced by ash preparation temperature and mixing with fuel. The impact of NH3 on NO depends on the stage of the co-combustion process, and NO emissions are reduced and the influence of ash on nitrogen chemistry is less pronounced under air staged conditions.
Article
Thermodynamics
Maxim V. Penzik, Alexander N. Kozlov, Shu Zhang, Vladislav V. Badenko, Ilya K. Sosnovsky, Vitaly A. Shamansky
Summary: The study aims to examine the physicochemical properties of biochar obtained at different temperatures during the pyrolysis of woody biomass. By using thermogravimetric analysis and mass spectrometry, the study compares the characteristics of biochar obtained at different temperatures (200, 250, 275, 300, 325, 350, 375, 400, and 500 ???C), as well as levoglucosan, cellulose, and lignin. The results show that the properties of biochar undergo significant changes at temperatures of 350 ???C and above, and the surface morphology of biochar has been studied using scanning electron microscopy.
THERMOCHIMICA ACTA
(2022)
Article
Thermodynamics
Senem Sezer, Furkan Kartal, Ugur Ozveren
Summary: Combining thermogravimetric and kinetic analysis, the study investigated co-combustion characteristics of Imbat coal and almond shell. Results showed that blend ratios significantly influenced combustion indexes, ignition temperature, and peak temperatures, demonstrating the synergistic effects in co-combustion processes.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2021)
Article
Thermodynamics
Ziyi Wang, Zhiqiang Gong, Zhenbo Wang, Zhiwei Chu, Xiaoyu Li, Jinhui Wu
Summary: This study compared the gasification characteristics of two typical oily sludge in a CO2 atmosphere and found slight differences in their thermal conversion temperatures and gasification reaction difficulties. The gasification products primarily consisted of H-2 and CO, with their output being significantly influenced by temperature.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Environmental Sciences
Hongpeng Liu, Shiqiang Zhang, Shiyu Feng, Chunxia Jia, Shuai Guo, Baizhong Sun, Qing Wang
Summary: The combustion characteristics of the mixture are affected by the mix ratio of SS, with lower SO2 emission amount and S-SO2 conversion rate compared to CS. Despite higher SO2 and NO emissions from CS blending with SS, the conversion rate of SO2 and NO decreases.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Guiying Xu, Tuanqiao Hu, Hetao Wei, Long Cheng, Hanxi Wang, Baizeng Fang
Summary: This study investigated the co-combustion characteristics and kinetics of Fenton/CaO conditioned MSS and biomass rice husk (RH) through thermogravimetry, utilizing response surface methodology for condition optimization. Results showed that mixing with RH can enhance combustion characteristic index (CCI) and reduce combustion temperatures, while improving combustion reactivity. Optimal conditions included RH mixing ratio of 56%, Fenton/CaO conditioner dosage of 147 mg g(-1) dry solids, heating rate of 30 K min(-1), maximum CCI of 25.3305 x 10(-7)%(2) degrees C-3 min(-2), and minimum total E-m of 10.6403 kJ min(-1), providing new insights into sludge combustion technology.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Energy & Fuels
Szymon Sobek, Sebastian Werle
Summary: This study investigated a fixed-bed solar pyrolysis of three waste biomass types emphasizing on heating behavior, product yields, and quality. The results showed that the bio-oil obtained from waste wood pyrolysis had the highest quality, while the chars produced after solar pyrolysis had high heating values, indicating potential for renewable solid fuel. The correlation between model-free kinetic predictions and gaseous species evolution was found, showing the value of apparent isoconversional activation energy profiles in describing solar pyrolysis gas compound formation at the laboratory scale.
Article
Green & Sustainable Science & Technology
Yu Wang, Zhiwei Ge, Fei Shang, Chenchen Zhou, Shenghui Guo, Changyifan Ren
Summary: CO2 gasification of biomass is a promising method for achieving carbon neutrality. However, most studies have focused on the pyrolysis of biomass or the CO2 gasification of biochar, neglecting the exploration of the whole reaction process and the relationship between the pyrolysis stage and gasification stage. In this paper, the authors conducted a kinetic analysis of the CO2 gasification process of corn straw and found that it can be divided into two major stages: biomass pyrolysis and biochar gasification. The study provides valuable insights for the development of industrial reactors for the CO2 gasification of corn straw.
Article
Thermodynamics
Aleksandra Petrovic, Janja Stergar, Lidija Skodic, Neza Rasl, Tjasa Cencic Predikaka, Lidija Cucek, Darko Goricanec, Danijela Urbancl
Summary: In this study, the effect of pre-treatment processes (torrefaction and hydrothermal carbonization) on the pyrolysis of food industry sewage sludge was investigated. The results showed that pre-treatment significantly increases the activation energy for pyrolysis and improves the thermochemical properties and stability of the treated samples.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Engineering, Environmental
Carol Huang, Badr A. Mohamed, Loretta Y. Li
Summary: This study investigated the feasibility of co-pyrolysis as a sewage sludge treatment process. The results showed that mixing co-feed biomass with sewage sludge reduced the overall environmental burden by 58-83%. Co-pyrolysis of wheat straw/SS performed better than sawdust/SS in terms of environmental impact. All examined scenarios achieved a net positive energy balance and reduced global warming potential. Sensitivity analysis indicated that transportation of feedstock and pyrolysis products should be prioritized to limit environmental burden. Co-pyrolysis is an eco-friendly and economically viable method for sewage sludge treatment.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Energy & Fuels
Wladimir Ruiz, Julie Guillemant, Lucie Coniglio, Ryan P. Rodgers, Jan H. Christensen, Victor Garcia-Montoto, Sylvain Verdier, Pierre Giusti, Caroline Barrere-Mangote, Brice Bouyssiere
Summary: This paper summarizes the analytical methods and detection techniques for inorganic species in bio-oils. It discusses commonly used methods as well as new technologies. The lack of standard analytical methods is identified as a major contributor to inaccurate results, and it is suggested that analytical methodologies used in crude oils should be adapted for bio-oil samples to obtain more accurate results.
Article
Thermodynamics
M. V. Penzik, I. G. Donskoy, A. N. Kozlov, M. A. Kozlova, V. A. Shamansky
Summary: This article studies the oxidation process of wood with different degrees of thermal conversion experimentally, proposing a new method for kinetic analysis of biomass decomposition. By comparing experimental data, the differences in thermochemical behavior of biomass and its components during thermal degradation are discussed.
THERMOCHIMICA ACTA
(2022)
Article
Agricultural Engineering
Wojciech Jerzak, Marcin Gajek, Aneta Magdziarz
Summary: The purpose of this study was to investigate the effect of adding NH4Cl to oat straw on the evolved gases, kinetic triplet, and thermodynamic parameters during the pyrolysis process at 873 K. The results showed that the addition of NH4Cl promoted carbonization of the chars, formation of C-N bonds, and reduced the production of CH4 and CO2. Furthermore, the addition of NH4Cl increased the mean values of the effective activation energy and thermodynamic parameters.
BIORESOURCE TECHNOLOGY
(2023)
Correction
Green & Sustainable Science & Technology
Maciej Sliz, Malgorzata Wilk
Review
Green & Sustainable Science & Technology
Klaudia Czerwinska, Maciej Sliz, Malgorzata Wilk
Summary: Hydrothermal carbonization is a low-energy alternative process that converts biomass and organic waste into biofuels, with the ability to handle various types of waste such as sewage sludge. The properties of the resulting products are influenced by process parameters like reaction time, pH, water content, and temperature, highlighting the importance of adjusting these parameters for desired product properties and applications.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Green & Sustainable Science & Technology
Malgorzata Wilk, Maciej Sliz, Boguslaw Lubieniecki
Summary: Hydrothermal co-carbonization of sewage sludge and fuel additives can improve the dewaterability of hydrochar for energy production. The addition of biomass during the process significantly enhances the properties of hydrochar and combustion process.
Article
Green & Sustainable Science & Technology
Malgorzata Wilk, Maciej Sliz, Marcin Gajek
Summary: The study focuses on the hydrothermal carbonization of beet pulp, investigating the optimal treatment conditions under different temperatures and times, and exploring the changes in physical and chemical properties, combustion performance, and fiber structure of the resulting hydrochar. The results show that beet pulp can be a renewable and high-value solid biofuel.
Article
Materials Science, Ceramics
Marcin Gajek, Alicja Rapacz-Kmita, Ewa Stodolak-Zych, Magdalena Zarzecka-Napierala, Malgorzata Wilk, Aneta Magdziarz, Magdalena Dudek
Summary: This paper presents research on the influence of the chemical composition of frits on the microstructure and mechanical properties of ceramic glazes. The results show that the main crystalline phases in the glazes are diopside or anorthite, depending on the B2O3 content and SiO2/Al2O3 molar ratio. Glazes with higher B2O3 content and lower SiO2/Al2O3 molar ratio have a higher content of anorthite crystal phase. The obtained glazes have a moderate surface roughness and high abrasion resistance.
CERAMICS INTERNATIONAL
(2022)
Article
Energy & Fuels
Malgorzata Wilk, Marcin Gajek, Maciej Sliz, Klaudia Czerwinska, Lidia Lombardi
Summary: Hydrochars derived from sewage sludge digestates were examined for their fuel properties. The hydrothermal carbonization process and the composition of the digestate affected the ash content and combustion characteristics of the hydrochars. The hydrochars from different plants showed similar properties under the same conditions. Distillation treatment of the post-processing liquid phase improved its quality indicators.
Article
Energy & Fuels
Maciej Sliz, Klaudia Czerwinska, Aneta Magdziarz, Lidia Lombardi, Malgorzata Wilk
Summary: The study shows that hydrothermal carbonization has a positive effect on the properties of under-sieve fraction of municipal mixed waste, improving its fuel properties. By altering process parameters, the fuel properties of hydrochars can be enhanced, making them more suitable for energy production.
Article
Engineering, Environmental
M. Sliz, F. Tuci, K. Czerwinska, S. Fabrizi, L. Lombardi, M. Wilk
Summary: The second waste stream produced from the treatment of mixed municipal solid waste can be processed through hydrothermal carbonization to produce hydrochar with improved combustion performance and dewaterability.
Article
Energy & Fuels
Patrycja Zakrzewska, Beata Zygmunt-Kowalska, Monika Kuznia, Artur Szajding, Tadeusz Telejko, Malgorzata Wilk
Summary: This paper discusses the use of natural fillers for the synthesis of rigid polyurethane foams and evaluates the results. The study found that using buckwheat husk, rice husk, and buckwheat husk ash as activators can improve the performance of the foam materials and reduce production costs.
Article
Environmental Sciences
Klaudia Czerwinska, Maciej Sliz, Malgorzata Wilk
Summary: Hydrothermal carbonization is a suitable method for sewage sludge management, with improved dewaterability and successful application of hydrochar. Distillation is studied as a method for post-processing liquid purification, with the influence of vacuum depth investigated. Both atmospheric pressure distillation and distillation under lower pressures effectively reduce COD, TOC, phenol index, heavy metals, and chlorine content. Distillation and low-pressure distillation can be used as appropriate methods for post-processing water utilization.
WASTE AND BIOMASS VALORIZATION
(2023)
Review
Energy & Fuels
Joanna Mikusinska, Monika Kuznia, Klaudia Czerwinska, Malgorzata Wilk
Summary: In agricultural biogas plants, the by-product digestate is produced along with biogas. This paper examines the properties of agricultural digestate and its hydrothermal conversion into hydrochar and process water. The parameters of the hydrothermal carbonization process affect the characteristics of hydrochar, making it suitable for various applications such as biofuel, fertilizer, soil improver, adsorber, or catalyst. The properties of hydrochar derived from agricultural digestate are extensively discussed in this paper.
Article
Environmental Sciences
Malgorzata Wilk, Maciej Sliz, Klaudia Czerwinska, Malgorzata Sledz
Summary: This research focused on the impact of adding sulphuric acid (VI) catalyst to sewage sludge on the solid and liquid products produced by hydrothermal carbonization. The addition of the catalyst altered the structure and properties of hydrochars and their ashes, resulting in decreased heavy metal content and increased phosphorus compounds in the filtrates.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Klaudia Czerwinska, Anna Marszalek, Edyta Kudlek, Maciej Sliz, Mariusz Dudziak, Malgorzata Wilk
Summary: This study focuses on post-processing methods for water derived from the hydrothermal carbonization process of sewage sludge, including membrane separation and coagulation. The results show that double nanofiltration can significantly reduce various indicators such as Chemical Oxygen Demand, conductivity, nitrate nitrogen, phosphate phosphorus, total organic carbon, total carbon, and inorganic carbon. In the second group, the addition of 10 cm3/L of iron coagulant to the permeate from ultrafiltration achieved the best reduction effect for multiple parameters.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Lidia Lombardi, Francesca Tuci, Maciej Sliz, Klaudia Czerwinska, Simone Fabrizi, Malgorzata Wilk
Summary: The under-sieve fraction (USF) from mixed municipal solid waste is usually biologically stabilized before landfilling. This study evaluates the sustainability of processing USF through hydrothermal carbonization (HTC) for energy production using Life Cycle Assessment. Environmental performances are mainly influenced by process energy consumption, with lower dilution ratios and higher temperatures providing better results. Co-combusting all the produced hydrochar in external power plants shows better environmental performances compared to internal HTC use. The proposed process demonstrates superior environmental performances compared to conventional aerobic biostabilization and landfilling methods.
Article
Energy & Fuels
Malgorzata Wilk, Klaudia Czerwinska, Maciej Sliz, Miroslaw Imbierowicz
Summary: Hydrothermal carbonization is an innovative method for the disposal of sewage sludge, with the solid product hydrochar having potential uses as fuel or fertilizer. The gaseous products mainly consist of CO2 and nitrogen, while the post-processing liquid, which accounts for about 80%, is highly toxic. This study aimed to investigate the potential of hydrochars derived from sewage sludge as fuel, and to utilize the filtrates after purification. The results showed that hydrochars exhibited improved energy properties and dewaterability compared to raw sewage sludge, with better chemical composition and filtration efficiency.
