Article
Energy & Fuels
Nai-Yu Yao, Jing-Pei Cao, Jing-Ping Zhao, Zi-Meng He, Xiao-Bo Feng, Tian-Long Liu, Ze-Ying Wang, Xiao-Yan Zhao
Summary: The addition of Zn during synthesis of HZSM-5 catalysts led to higher yields and selectivity in the catalytic reforming of cellulose pyrolysis volatiles, as well as improved mass transfer and anti-coking performance.
Article
Environmental Sciences
M. A. A. Mohamad Dzol, V. Balasundram, K. Shameli, N. Ibrahim, Z. A. Manan, R. Isha
Summary: The aim of this study is to investigate the effect of nickel-waste chicken eggshell modified Hydrogen exchanged Zeolite Socony Mobil-5 (Ni-WCE/HZSM-5) on the pyrolysis of high-density polyethylene (HDPE). The impregnation of nickel and WCE significantly affected the structure and surface properties of HZSM-5. Among the tested catalytic samples, WCE showed the highest pyrolysis oil yield and Ni/HZSM-5 exhibited the highest yield of C6 and C7 hydrocarbons.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Agricultural Engineering
Shaoqing Wang, Zhihe Li, Weiming Yi, Peng Fu, Xueyuan Bai
Summary: This study demonstrates the successful use of a tailored hierarchical zeolite catalyst for the catalytic pyrolysis of corn cob lignin, resulting in the production of value-added aromatic hydrocarbons. The hierarchical zeolite allows for the regulation of aromatic hydrocarbon components, improves catalytic stability, and reduces coke formation. This research is of great importance for practical applications.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Green & Sustainable Science & Technology
Shaoqing Wang, Zhihe Li, Weiming Yi, Peng Fu, Andong Zhang, Xueyuan Bai
Summary: This study successfully increased the production of mono-aromatic hydrocarbons (MAHs) and inhibited the formation of poly-aromatic hydrocarbons (PAHs) in the catalytic pyrolysis of lignin by combining Al-SBA-15 and HZSM-5.
Article
Chemistry, Applied
Tao Jin, Hongtao Wang, Jiebang Peng, Yushan Wu, Zhen Huang, Xin Tian, Mingyue Ding
Summary: This study investigated the feasibility of using metal-modified HZSM-5 zeolite as catalysts for monocyclic aromatic hydrocarbons production in lignin catalytic pyrolysis. The 1%Co-HZ catalyst showed excellent performance and resistance to carbon deposition.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Xiaojie Tian, Zihong Zeng, Zhihao Liu, Leilei Dai, Jiamin Xu, Xiuhua Yang, Linqing Yue, Yuhuan Liu, Roger Ruan, Yunpu Wang
Summary: This study investigated the catalytic properties of different materials on the pyrolysis of plastics and found that HZSM-5 is the most suitable catalyst for producing monocyclic aromatic hydrocarbons. The cracking process occurring in its pores plays a crucial role in the product distribution of plastic waste.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Agricultural Engineering
Nichaboon Chaihad, Aisikaer Anniwaer, Aghietyas Choirun Az Zahra, Yutaka Kasai, Prasert Reubroycharoen, Katsuki Kusakabe, Abuliti Abudula, Guoqing Guan
Summary: The issue of narrow micropores in traditional protonic type Zeolite Socony Mobil-5 (HZSM-5) catalysts, which restrict the diffusion of large-molecular reactants/products, was tackled by preparing hollow HZSM-5 with a mesoporous shell. The efficient catalyst of Hollow(30)-TP showed significantly higher aromatic hydrocarbon yields for cellulose and hemicellulose compared to traditional HZSM-5, and exhibited excellent reusability and regeneration due to increased accessibility to acid sites.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Applied
Tao Jin, Donghong Zhang, Jiebang Peng, Yushan Wu, Jingjing Ma, Jianli Zhang, Xin Tian, Mingyue Ding
Summary: In this study, HZSM-5 zeolites pretreated with organic alkali and cobalt were used as catalysts for the production of monocyclic aromatic hydrocarbons from lignin via catalytic fast pyrolysis. Cobalt modification was found to enhance the acidity and production of monocyclic aromatic hydrocarbons. The addition of cetyltrimethylammonium bromide regulated the mesoporous structure of the zeolite and prevented over-treatment. The HZSM-5 pretreated with TPAOH showed the highest monocyclic aromatic hydrocarbons production under the optimal conditions.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Nichaboon Chaihad, Aisikaer Anniwaer, Surachai Karnjanakom, Yutaka Kasai, Suwadee Kongparakul, Chanatip Samart, Prasert Reubroycharoen, Abuliti Abudula, Guoqing Guan
Summary: Cu-modified HZSM-5 catalyst showed improved catalytic performance in upgrading bio-oil, with higher aromatic hydrocarbons yield attributed to suitable acidity and optimal Cu loading amount. Moreover, the catalyst exhibited excellent reusability and regeneration property.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Chemistry, Analytical
Huifen Kang, Xintong Guo, Mei An, Qingjie Guo, Guozhang Chang
Summary: A combination of Ca-Fe and HZSM-5 catalysts was proposed to enhance the yields of aromatic hydrocarbons from pinecone pyrolysis. The performance of the catalysts and the mechanism of enhanced aromatic hydrocarbon generation were investigated. The results showed that the combination of Ca-Fe and HZSM-5 catalysts produced the largest peak area and highest relative content of aromatic hydrocarbons. The introduction of Ca-Fe components increased the yield of aromatics, especially benzene, toluene, ethylbenzene, and xylene.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Energy & Fuels
Nuttapan Promsampao, Nuwong Chollacoop, Adisak Pattiya
Summary: This study investigates the characteristics and activities of HZSM-5 catalyst after undergoing low-temperature hydrothermal treatment, and finds that the treatment can improve the performance of the catalyst and increase the yield of non-aqueous catalytic bio-oil. The deoxygenation ability of the treated bio-oil is still acceptable, even with increased deactivation of the catalyst under higher biomass conditions.
Article
Chemistry, Applied
Xiaohua Li, Jiayuan Sun, Hongchang Zhang, Shanshan Shao, Yixi Cai
Summary: Catalytic pyrolysis of rape straw using a dual-catalyst system was found to be an effective method for producing benzene, toluene, and xylene. The yield of BTX in bio-oil can reach high levels under appropriate temperature and catalyst conditions. The use of red mud as a catalyst in a cascade catalytic system improved the coking resistance of the catalyst.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Xiaohua Li, Jinlong Yan, Shanshan Shao, Shengnan Ge, Zhichao Lv, Yixi Cai
Summary: The direct non-thermal plasma (DNTP) system is an effective method for removing templates from composite catalysts and improving their physicochemical properties, thereby enhancing catalytic performance for monocyclic aromatic hydrocarbons.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Chemistry, Analytical
Xiang Zheng, Zhaoping Zhong, Bo Zhang, Haoran Du, Wei Wang, Qian Li, Yuxuan Yang, Renzhi Qi, Zhaoying Li
Summary: Enzymatic hydrolysis lignin (EHL) produced during the fermentation of lignocellulosic biomass can be catalytically converted using HZSM-5/MCM-41 e-shell zeolites loaded with transition metals. Co-Ni@H/M catalyst showed improved selectivity and relative abundance of monocyclic aromatic hydrocarbons (MAHs), and inhibited the polymerization of phenols and oxygen-containing compounds, thereby reducing coke formation.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Agricultural Engineering
Jiajun Yu, Bingbing Luo, Siyu Wang, Kai Wu, Yujie Tao, Sheng Chu, Huiyan Zhang
Summary: In this study, Mo/HZSM-5 was modified by ultrasonic treatment to improve catalytic efficiency and reduce coking. It was found that ultrasonic treatment facilitated the diffusion of more Mo species into the HZSM-5 channels and enhanced the interaction between molybdenum species and HZSM-5 acid sites, leading to increased aromatic hydrocarbon yield. The activity of the ultrasonic Mo modified catalyst increased by 54%, resulting in an increase in aromatic carbon production from 5.09 mmol.g(cat)(-1) to 7.82 mmol.g(cat)(-1). The carbon yield of aromatics can reach 21.7% by adjusting the WHSV. The Ul-Mo/HZSM-5 catalyst showed excellent regeneration performance, with no decrease in activity after seven regenerations.
BIOMASS & BIOENERGY
(2023)
Article
Thermodynamics
Si Woo Han, Jeong Jae Lee, Diyar Tokmurzin, Seok Hyeong Lee, Ji Young Nam, Sung Jin Park, Ho Won Ra, Tae-Young Mun, Sang Jun Yoon, Sung Min Yoon, Ji Hong Moon, Jae Goo Lee, Young-Min Kim, Young Woo Rhee, Myung Won Seo
Summary: The study investigated the air gasification properties of SRF with high content of residual mixed waste plastic in a lab scale bubbling fluidized bed gasifier. The results showed that gas yield increases and tar yield decreases as the operating temperature and air-to-fuel equivalence ratio (ER) increases, with changes in the concentration of various gases in the gas product. The H2/CO ratio increases with rising temperature and decreases with rising ER, while carbon conversion efficiency (CCE) and cold gas efficiency peak at 800 degrees C and ER of 0.25.
Article
Thermodynamics
Hanie Hakimian, Sumin Pyo, Young-Min Kim, Jungho Jae, Pau Loke Show, Gwang Hoon Rhee, Wei-Hsin Chen, Young-Kwon Park
Summary: This study investigated the catalytic pyrolysis of cellulose with oil sludge as a co-feeding feedstock, with Ni/HZSM-5 catalyst showing the best cracking and BTEXs formation effect. The experimental BTEXs yields were higher than theoretical values over all catalysts, indicating a synergistic effect. Highest synergistic effect was observed when 1/3 of cellulose/oil sludge mixture was used as the feedstock.
Article
Engineering, Environmental
Abid Farooq, Jechan Lee, Hocheol Song, Chang Hyun Ko, Im-Hack Lee, Young-Min Kim, Gwang Hoon Rhee, Sumin Pyo, Young-Kwon Park
Summary: This study introduces a method to valorize hazardous waste like used COVID-19 face masks through catalytic gasification using Ni-loaded ZSM-5 type zeolites. The research found that 25% Ni loading on ZSM-5 is optimal for H-2 production. Using steam as gasifying agent can reduce the content of N-containing species in the gasification product, potentially hazardous air pollutants.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Sumin Pyo, Jechan Lee, Young-Min Kim, Youna Park, Im Hack Lee, Yong Jun Choi, Gwang Hoon Rhee, Sang-Chul Jung, Young-Kwon Park
Summary: Catalytic fast co-pyrolysis with HZSM-5 and LLDPE effectively upgrades BHO to less hazardous fuel, with DeHZSM-5 showing enhanced hydrocarbon production and reduced content of toxic compounds. The study experimentally validates the feasibility of this approach for bio-heavy oil conversion.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Materials Science, Ceramics
Young Min Kim, Jong Han Mun, Sang-Joo Kim
Summary: The study re-analyzed the measured data of Mun et al., providing a modified set of fitting equations for investigating the evolution of properties in ferroelectric ceramics during stress-induced domain switching. Normalizing the remnant state variables revealed some intrinsic characteristics of the domain switching process in the materials.
JOURNAL OF THE KOREAN CERAMIC SOCIETY
(2022)
Article
Engineering, Environmental
Se Jeong Lim, Young-Kwon Park, Hyein Kim, Jihye Kwon, Hye Mi Moon, Yeonsook Lee, Atsushi Watanabe, Norio Teramae, Hajime Ohtani, Young-Min Kim
Summary: This study introduces a new method for the identification and quantification of synthetic microfibers emitted from textiles during the laundering process. The method involves the filtration of laundry wastewater, solvent extraction, and pyrolysis-gas chromatography/mass spectrometry. The results show that blended textiles produce a larger amount of microplastics compared to single textiles.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Food Science & Technology
Juhee Park, Jihee Lee, Young-Min Kim, Min Ji Kang, Hee-Jae Suh, Jihyun Lee, Hee-Seok Lee, Chan Lee
Summary: A new HPLC method with evaporative light scattering detection was developed for the quantitative analysis of PVOH products, and was validated using Py-GC/MS. The method showed good linearity, accuracy, repeatability, and intermediate precision, and can be applied for analyzing PVOH in dietary supplement tablets.
FOOD SCIENCE AND BIOTECHNOLOGY
(2022)
Article
Energy & Fuels
Si Woo Han, Diyar Tokmurzin, Jeong Jae Lee, Sung Jin Park, Ho Won Ra, Sang Jun Yoon, Tae-Young Mun, Sung Min Yoon, Ji Hong Moon, Jae Goo Lee, Young-Min Kim, Young Woo Rhee, Myung Won Seo
Summary: This study investigates the gasification characteristics of waste plastic and the tar removal properties of activated carbon and olivine. The results show that using activated carbon and olivine can effectively reduce the tar content and improve the quality of the product gas, and steam gasification can increase the content of hydrogen and carbon monoxide.
Article
Environmental Sciences
Jin Sun Cha, Young-Min Kim, Im Hack Lee, Yong Jun Choi, Gwang Hoon Rhee, Hocheol Song, Byong-Hun Jeon, Su Shiung Lam, Moonis Ali Khan, Kun-Yi Andrew Lin, Wei-Hsin Chen, Young-Kwon Park
Summary: This study investigated the catalytic ozone oxidation of hazardous toluene using sawdust char (SDW) as a catalyst. The catalyst properties and their effects on toluene removal were analyzed, and it was found that the improved MnOx/SDC-K3 catalyst exhibited higher removal efficiency.
ENVIRONMENTAL POLLUTION
(2022)
Article
Energy & Fuels
Jae-Wang Shim, Sumin Pyo, Su Shiung Lam, Jungho Jae, Byong-Hun Jeon, Moonis Ali Khan, Kun-Yi Andrew Lin, Young-Min Kim, Sang-Chul Jung, Young-Kwon Park
Summary: This study investigated the pyrolysis kinetics and product distribution of chicken manure through thermogravimetric analysis and pyrolyzer-gas chromatography/mass spectrometry. The results showed different decomposition reactions at different stages and the catalytic effect of acid catalysts on product formation.
Article
Environmental Sciences
Hanie Hakimian, Soheil Valizadeh, Young-Min Kim, Young-Kwon Park
Summary: This research investigated the catalytic pyrolysis of oil sludge using metal-loaded HZSM-5 catalysts to produce value-added aromatics. Results showed that Ni-loaded HZSM-5 catalyst had the highest yield of BTEXs and other aromatics. Increasing the reaction temperature and catalyst amount also improved the yield.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Min-Ji Ha, Jung Eun Lee, Y. Park, Jin Sun Cha, Young-Min Kim, Beom-Sik Kim
Summary: The catalytic ozonation of methylethylketone (MEK) was investigated using synthesized Mn and Cu-loaded ZSM-5 catalysts. Different catalysts were studied for the removal of MEK and ozone, and 5 wt% Mn/ZSM-5 and 5Mn1CuZSM showed the highest efficiency, respectively. The 5Mn1CuZSM catalyst exhibited superior catalytic reactivity for ozone conversion and CO2 selectivity.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Yujin Hwang, Young -Min Kim, Jung Eun Lee, Gwang Hoon Rhee, Pau-Loke Show, Kun -Yi Andrew Lin, Young-Kwon Park
Summary: Removal of harmful volatile organic compounds (VOCs), such as 2-butanone, emitted from industrial plants is crucial for clean air. Recycling porous spent fluid catalytic cracking (SFCC) catalysts from petroleum refineries can reduce waste and reuse resources. Mn-Cu/SFCC and Mn/SFCC catalysts exhibited superior catalytic efficiency in the ozonation of 2-butanone compared to other catalysts studied. The improved distribution of Mn3+ species and O-vacancy sites in Mn/SFCC and Mn-Cu/SFCC catalysts enhanced their catalytic activity for 2-butanone and ozone removal.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Cheolwoo Park, Eun-Suk Jang, Young-Min Kim
Summary: The effects of temperature on the product quality of wood pellet torrefaction were studied. Increasing the torrefaction temperature resulted in a decrease in solid yield and an increase in gas and liquid yield due to the elimination and decomposition of hemicellulose, cellulose, and lignin. The heating value of the wood pellets increased, but overall energy recovery efficiency decreased. The torrefied wood pellets exhibited improved hydrophobicity and decreased moisture absorption. Low-temperature torrefaction produced typical pyrolyzates of hemicellulose and cellulose, while high-temperature torrefaction increased the amount of lignin pyrolyzates and provided a potential tar reduction during gasification.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
Hyeon Su Heo, Sumin Pyo, Bo Sung Kang, Jung Sul Jung, Gwang Hoon Rhee, Young-Min Kim, Ji Man Kim, Young-Kwon Park
Summary: In this study, the feasibility of low-cost catalysts (gamma-Al2O3, spent FCC catalyst, and natural zeolite) in the pyrolysis of wood-plastic composite (WPC) was evaluated using thermogravimetric and pyrolyzer-gas chromatography/mass spectrometry analyses. The use of low-cost catalysts during catalytic fast pyrolysis (CFP) was found to decrease the decomposition temperature of polyethylene and polypropylene in WPC. Natural zeolite exhibited the lowest activation energy (Ea) of CFP, followed by spent FCC catalyst and gamma-Al2O3, respectively. Although CFP over natural zeolite was less effective in decreasing the production of low-quality hydrocarbons, paraffins, and olefins compared to spent FCC catalyst and gamma-Al2O3, it produced the largest amount of value-added aromatic hydrocarbons due to its high and strong acidity.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Green & Sustainable Science & Technology
Lars odegaard Bentsen, Narada Dilp Warakagoda, Roy Stenbro, Paal Engelstad
Summary: This study investigates uncertainty modeling in wind power forecasting using different parametric and non-parametric methods. Johnson's SU distribution is found to outperform Gaussian distributions in predicting wind power. This research contributes to the literature by introducing Johnson's SU distribution as a candidate for probabilistic wind forecasting.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Xing Liu, Qiuchen Wang, Yunhao Wen, Long Li, Xinfang Zhang, Yi Wang
Summary: This study analyzes the characteristics of process parameters in three lean gas ethane recovery processes and establishes a prediction and multiobjective optimization model for ethane recovery and system energy consumption. A new method for comparing ethane recovery processes for lean gas is proposed, and the addition of extra coolers improves the ethane recovery. The support vector regression model based on grey wolf optimization demonstrates the highest prediction accuracy, and the multiobjective multiverse optimization algorithm shows the best optimization performance and diversity in the solutions.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Cairong Song, Haidong Yang, Xian-Bing Meng, Pan Yang, Jianyang Cai, Hao Bao, Kangkang Xu
Summary: The paper proposes a novel deep learning-based prediction framework, aTCN-LSTM, for accurate cooling load predictions. The framework utilizes a gate-controlled multi-head temporal convolutional network and a sparse probabilistic self-attention mechanism with a bidirectional long short-term memory network to capture both temporal and long-term dependencies in the cooling load sequences. Experimental results demonstrate the effectiveness and superiority of the proposed method, which can serve as an effective guide for HVAC chiller scheduling and demand management initiatives.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Zhe Chen, Xiaojing Li, Xianli Xia, Jizhou Zhang
Summary: This study uses survey data from the Loess Plateau in China to evaluate the impact of social interaction on the adoption of soil and water conservation (SWC) technology by farmers. The study finds that social interaction increases the likelihood of farmers adopting SWC, and internet use moderates this effect. The positive impact of social interaction on SWC adoption is more pronounced for farmers in larger villages and those who join cooperative societies.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Chenghua Zhang, Yunfei Yan, Kaiming Shen, Zongguo Xue, Jingxiang You, Yonghong Wu, Ziqiang He
Summary: This paper reports a novel method that significantly improves combustion performance, including heat transfer enhancement under steady-state conditions and adaptive stable flame regulation under velocity sudden increase.
JOURNAL OF CLEANER PRODUCTION
(2024)
