Phase transformation and strength of hydrated circulating fluidised bed combustion ash sediment in an open environment over 15 years: implications for the long-term stability of ash waste plateaus

Autor: Alar Konist, Peeter Paaver, Tõnu Pihu, Kalle Kirsimäe

Publikováno v: Oil Shale, Vol 41, Iss 3, Pp 145-162 (2024)

Low-temperature circulating fluidised bed combustion (CFBC) of oil shale results in Ca-rich ashes with low pozzolanic properties, raising concerns regarding the long-term stability of ash depositories. This paper presents findings from a long-term fi

Externí odkaz: https://doaj.org/article/f2453ad4d93b44619a4ec1773160cbd7

A comprehensive review of carbon capture science and technologies

Autor: Chunfei Wu, Qi Huang, Zhicheng Xu, Ayesha Tariq Sipra, Ningbo Gao, Luciana Porto de Souza Vandenberghe, Sabrina Vieira, Carlos Ricardo Soccol, Ruikai Zhao, Shuai Deng, Sandra K.S. Boetcher, Shijian Lu, Huancong Shi, Dongya Zhao, Yupeng Xing, Yongdong Chen, Jiamei Zhu, Dongdong Feng, Yu Zhang, Lihua Deng, Guoping Hu, Paul A. Webley, Daxin Liang, Zhichen Ba, Agata Mlonka-Mędrala, Aneta Magdziarz, Norbert Miskolczi, Szabina Tomasek, Su Shiung Lam, Shin Ying Foong, Hui Suan Ng, Long Jiang, Xinlong Yan, Yongzhuo Liu, Ying Ji, Hongman Sun, Haiping Yang, Xiong Zhang, Mingzhe Sun, Daniel C.W. Tsang, Jin Shang, Christoph Muller, Margarita Rekhtina, Maximilian Krödel, Alexander H. Bork, Felix Donat, Lina Liu, Xin Jin, Wen Liu, Syed Saqline, Xianyue Wu, Yongqing Xu, Asim Laeeq Khan, Zakawat Ali, Haiqing Lin, Leiqing Hu, Jun Huang, Rasmeet Singh, Kaifang Wang, Xuezhong He, Zhongde Dai, Shouliang Yi, Alar Konist, Mais Hanna Suleiman Baqain, Yijun Zhao, Shaozeng Sun, Guoxing Chen, Xin Tu, Anke Weidenkaff, Sibudjing Kawi, Kang Hui Lim, Chunfeng Song, Qing Yang, Zhenyu Zhao, Xin Gao, Xia Jiang, Haiyan Ji, Toluleke E. Akinola, Adekola Lawal, Olajide S. Otitoju, Meihong Wang, Guojun Zhang, Lin Ma, Baraka C. Sempuga, Xinying Liu, Eni Oko, Michael Daramola, Zewei Yu, Siming Chen, Guojun Kang, Qingfang Li, Li Gao, Ling Liu, Hui Zhou

Publikováno v: Carbon Capture Science & Technology, Vol 11, Iss , Pp 100178- (2024)

Externí odkaz: https://doaj.org/article/7630305b4347450f86f53606c5e7c4d6

TG-MS analysis and kinetic study of co-combustion of ca-rich oil shale with biomass in air and oxy-like conditions

Autor: Mais Baqain, Dmitri Neshumayev, Alar Konist

Publikováno v: Carbon Capture Science & Technology, Vol 10, Iss , Pp 100162- (2024)

In this study, the combustion behavior of ca-rich oil shale, spruce biomass, and their blends under air and oxyfuel environments of 21/79 % and 30/70 % O2/CO2 like conditions were investigated. Non-isothermal thermogravimetric (TG) experiments couple

Externí odkaz: https://doaj.org/article/fae818366f1546f4915193eda7cc5b1c

A combined analysis of the drying and decomposition kinetics of wood pyrolysis using non-isothermal thermogravimetric methods

Autor: Richard Ochieng, Alejandro L. Cerón, Alar Konist, Shiplu Sarker

Publikováno v: Energy Conversion and Management: X, Vol 20, Iss , Pp 100424- (2023)

In this paper, we evaluate the pyrolysis of wood biomass as a combination of drying and thermal decomposition via the Page and modified Page models for drying kinetics as well as the Friedman and Vyazovkin methods for solid-state decomposition kineti

Externí odkaz: https://doaj.org/article/7af6735c007145859c1b10d419508379

Comparison of the ecotoxic properties of oil shale industry by-products to those of coal ash

Autor: Heidi Lees, Oliver Järvik, Alar Konist, Andres Siirde, Birgit Maaten

Publikováno v: Oil Shale, Vol 39, Iss 1, Pp 1-19 (2022)

The European Union (EU) presented a uniform List of Waste (LoW) in 2000 and last updated the technical guidance in 2018. The respective local regulations for the classification of waste in Estonia were set in 2015. Due to the changes in the regulatio

Externí odkaz: https://doaj.org/article/de6c51d406d24b5e97a30cdc02a141c6