Article
Chemistry, Physical
Serly Jolanda Sekewael, Remi Ayu Pratika, Latifah Hauli, Amalia Kurnia Amin, Maisari Utami, Karna Wijaya
Summary: Zirconia with enhanced acidity through sulfation process can be modified with transition metals to improve catalytic activity and stability. The catalytic tests showed that the modified catalysts had higher activity and produced more liquid fuel compared to pure ZrO2 and ZrO2-SO4 catalyst.
Article
Chemistry, Physical
Jack T. Hopper, Ruining Ma, James B. Rawlings, Peter C. Ford, Mahdi M. Abu-Omar
Summary: In this study, a quantitative investigation was conducted on the liquid-phase dehydration of sorbitol using sulfated zirconia (SZ) solid acid catalysts synthesized via sol-gel method. The optimal catalyst achieved complete conversion of sorbitol to isosorbide in less than 2 hours with a yield of 76%. The quantitative kinetics and structure-reactivity studies provided insights into the factors affecting product yields and SZ catalyst activity.
Article
Engineering, Environmental
Xiaona Wang, Ming Gao, Menglu Wang, Chuanfu Wu, Qunhui Wang, Ying Wang
Summary: The study highlights the importance of leaching protocols (i.e. lactic acid addition amount and timing) in improving chlorine removal efficiency from fly ash by lactic acid fermentation broth. It suggests that reducing the thickness of the calcium salt precipitation layer or breaking the crystal structure of CaAlSiO4(OH) during the leaching process is essential for efficient dechlorination of fly ash.
Article
Green & Sustainable Science & Technology
Siyu Han, Kailun Chen, Fanzhi Meng, Yuchen Gao, Jinglin Li, Li Lin, Weikai Qin, Jianguo Jiang
Summary: This study presents a novel pH-controlled sulfuric acid washing method for municipal solid waste incineration fly ash (FA) to enhance heavy metal stabilization and enable the co-recycling of FA and waste sulfuric acid. The leaching rate of heavy metals was significantly reduced by controlling the pH during sulfuric acid washing, and the use of sulfuric acid washed FA (SFA) in lightweight aggregate production improved heavy metal stabilization. XPS analysis further investigated the transformation of heavy metals into stable states during washing and sintering. This study offers insights into the mechanism of heavy metal stabilization and provides an environmentally sustainable solution for FA treatment.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Chemical
Mirjam Wolffers, Gisela Weibel, Urs Eggenberger
Summary: The study indicates that treatment with acid fly ash leaching can effectively reduce heavy metal and Cr(VI) content in waste wood fly ash, but requires a significant consumption of neutralizing chemicals. Co-processing waste wood fly ash with municipal solid waste incineration fly ash may help mitigate negative effects during treatment.
Article
Engineering, Environmental
Zhikun Zhang, Yanli Wang, Yuqi Zhang, Boxiong Shen, Jiao Ma, Lina Liu
Summary: This study investigated the stabilization behavior of heavy metals in hazardous municipal solid waste incineration fly ash (FA) using coal fly ash (CFA) as an additive via hydrothermal treatment. The results showed that most heavy metals were stabilized in the hydrothermal product, and the addition of CFA resulted in the reduction of leaching concentrations and risk assessment code (RAC) of heavy metals. The method with 30% CFA exhibited the most superior performance.
Article
Nanoscience & Nanotechnology
Chen-Piao Yen, Yun-Hwei Shen, Kai-Lun Chiu, Hsin-Hsiang Huang
Summary: This study successfully developed an optimal process to recover zinc from Municipal Solid Waste incineration fly ash. By conducting water leaching and acid leaching, an aqueous solution containing approximately 1% zinc was obtained, and then the target metal ions were concentrated and recovered through ion exchange process.
SCIENCE OF ADVANCED MATERIALS
(2021)
Article
Engineering, Environmental
Xinyuan Zhan, Gunvor Marie Kirkelund
Summary: The study explored the use of electrodialytic remediation (ED) as a pre-treatment to remove heavy metals from MSWI fly ash before geopolymerization. The pre-treatment increased the reactivity of Si and Si/Al ratio in fly ash. A mixture of 80% coal fly ash and 20% ED treated fly ash with 8 M NaOH was found to have optimal compressive strength in geopolymerization.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Construction & Building Technology
Yanying Bai, Weichao Guo, Qingxin Zhao, Ningtao Zhang, Caihong Xue, Shuai Wang, Yongpeng Song
Summary: This study evaluated the durability of geopolymer made from red mud-slag activated by carbide slag municipal solid waste incineration fly ash (CRMG) as a solidification and stabilization binder for heavy metals exposed to sulfuric acid solution. The results showed that CRMG had a higher acid resistance than Ordinary Portland cement (OPC) in terms of visual appearance and mass loss. After 112 days of exposure, CRMG's compressive strength remained higher than OPC's, with a 20% loss in strength. The leaching concentration of CRMG was below the national standard.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Environmental Sciences
Daoyuan Tian, Yimin Yang, Jia Zhang, Yang Yue, Guangren Qian
Summary: This study successfully synthesized cordierite using MSWI fly ash as an additive and improved its properties. The cordierite showed promising performance as a heat accumulator and catalyst carrier, surpassing the commercial cordierite in terms of strength and pollutant removal efficiency.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Engineering, Environmental
Minh Man Trinh, Moo Been Chang
Summary: This study investigated the combination of water washing and catalysis in the pyrolysis process, finding that at 350 degrees Celsius, this method can reduce the concentrations of PCDD/Fs and dl-PCBs, enabling the reuse of MSW fly ash.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Junde Qin, Yunhui Zhang, Yaolin Yi
Summary: This study investigated the effects of water washing and acid washing on gasification fly ash. The results showed that different re-precipitates could be identified in washed GFAs depending on different pH conditions. Low-concentration acid washing reduced heavy metal leachabilities, while high-concentration acid washing effectively extracted Zn and Cd. Applying 1.2 M-HCl washing for 15 minutes achieved a Pb extraction ratio of 81.2%.
ENVIRONMENTAL POLLUTION
(2023)
Article
Chemistry, Applied
Md Ashraful Abedin, Swarom Kanitkar, Srikar Bhattar, James J. Spivey
Summary: Methane dehydroaromatization (MDHA) is a direct method for converting methane to aromatics and H2, with Mo doped HZSM-5/HMCM-22 being the most active and stable catalysts. Different promoters have varying effects on catalyst activity, carbon deposition, and deactivation rates, with Pd, Pt, and Cr promoters showing less carbon deposition and slower deactivation compared to W promoter. Additionally, Pt and Cr promoters exhibit higher aromatics selectivity for Mo/SZ catalyst compared to Pd and W promoters.
Review
Chemistry, Multidisciplinary
Carmen Otilia Rusanescu, Marin Rusanescu
Summary: In this paper, we analyzed the impact of using fly ash from the incineration of municipal solid waste as an improver of acidic soils in agriculture. Methods to reduce the content of heavy metals and salts were presented. It was found that adding certain concentrations of fly ash to degraded soils improves soil quality, porosity, and texture, increases crop yield, enhances water retention capacity and soil aeration, optimizes pH value, increases electrical conductivity, reduces crust formation, and provides micronutrients to the soil. In the context of the circular economy, using fly ash as an organic fertilizer reduces the use of harmful chemical fertilizers, solves the problem of ash storage, and mitigates environmental pollution.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Sakshi Kabra Malpani, Deepti Goyal, Stuti Katara, Ashu Rani
Summary: Cost-effective, efficient, and green solid acid catalysts were synthesized by impregnating various weight fractions of phosphomolybdic acid on mechanically and thermally activated coal fly ash. The developed catalyst showed high catalytic activity in acylation reactions conducted in microwave heating mode, and could be recycled up to five reaction cycles with high conversion percentage.
Article
Chemistry, Multidisciplinary
Manu Vashishtha, Manish Mishra, Dinesh O. Shah
Article
Chemistry, Multidisciplinary
Manish Dixit, Manish Mishra, P. A. Joshi, D. O. Shah
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
(2012)
Article
Chemistry, Multidisciplinary
J. Joshi, M. K. Mishra, M. Srinivasarao
CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE
(2011)
Article
Energy & Fuels
Deepti Jain, Chitralekha Khatri, Ashu Rani
Article
Chemistry, Applied
Ashu Rani, Chitralekha Khatri, Renu Hada
FUEL PROCESSING TECHNOLOGY
(2013)
Article
Chemistry, Multidisciplinary
V. G. Gandhi, M. K. Mishra, M. S. Rao, A. Kumar, P. A. Joshi, D. O. Shah
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2011)
Article
Chemistry, Physical
V Shah, B. Bharatiya, M. K. Mishra, D. Ray, D. O. Shah
JOURNAL OF MOLECULAR LIQUIDS
(2019)
Article
Chemistry, Physical
V. Shah, B. Bharatiya, V. Patel, M. K. Mishra, A. D. Shukla, D. O. Shah
JOURNAL OF MOLECULAR LIQUIDS
(2019)
Review
Chemistry, Inorganic & Nuclear
Tarun Parangi, Manish Kumar Mishra
COMMENTS ON INORGANIC CHEMISTRY
(2019)
Article
Chemistry, Physical
Nisha B. Patel, Naresh Vala, Atindra Shukla, Subhadip Neogi, Manish Kumar Mishra
CATALYSIS COMMUNICATIONS
(2020)
Article
Multidisciplinary Sciences
Niharika Shringi, Chitralekha Sidana, Ashu Rani
Summary: Coal fly ash was transformed into a bifunctional catalyst with strong acid sites for the condensation of 2-naphthol and aromatic aldehydes. The catalyst, prepared by mechanically activating and loading sulfated tin oxide, exhibited high stability, activity, and yield.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Physical
Piyush Rajput, M. P. Deshpande, Hiteshkumar R. Bhoi, Nidhishree M. Suchak, Prachi H. Desai, S. H. Chaki, Swati J. Pandya, Manish Mishra, Sandip Bhatt, Dhermendra K. Tiwari, Vasant Sathe
Summary: In this study, TiO2 nanostructures doped with Yttrium were prepared using chemical co-precipitation method and their properties were characterized. The results showed that Yttrium doping significantly influenced the photocatalytic and antibacterial activities of TiO2.
CHEMICAL PHYSICS IMPACT
(2022)
Article
Chemistry, Multidisciplinary
Naresh Vala, Pradyuman A. Joshi, Manish Mishra
NEW JOURNAL OF CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Sajid Ismailkhan Mogal, Dinesh Ochhavlal Shah, Tulsi Mukherjee, Thoudinja Shripathi, Manish Kumar Mishra
Article
Chemistry, Applied
Kamlesh N. Tayade, Lianyue Wang, Sensen Shang, Wen Dai, Manish Mishra, Shuang Gao
CHINESE JOURNAL OF CATALYSIS
(2017)
Correction
Chemistry, Applied
Jia Liu, Juntong Dong, Xiaodan Li, Teng Xu, Zhenguo Li, Jeffrey Dankwa Ampah, Mubasher Ikram, Shihai Zhang, Chao Jin, Zhenlong Geng, Tianyun Sun, Haifeng Liu
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Seba Alareeqi, Daniel Bahamon, Kyriaki Polychronopoulou, Lourdes F. Vega
Summary: This study explores the potential application of single-atom-alloy (SAA) catalysts in bio-oils hydrodeoxygenation refining using density functional theory (DFT) and microkinetic modeling. It establishes the relationships between stability, adsorptive properties, and activity structures for bio-oil derivatives, providing guidance for the synthesis of cost-effective SAA combinations.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Bin Hu, Wen -Ming Zhang, Xue-Wen Guo, Ji Liu, Xiao Yang, Qiang Lu
Summary: This study explored the pyrolysis behaviors and mechanisms of different monosaccharides, including arabinose, galactose, galacturonic acid, and glucuronic acid. The roles of structural differences in these monosaccharides were analyzed, and it was found that glucuronic acid undergoes a special C-C bond breaking reaction during pyrolysis. The findings provide a deep understanding of the pyrolysis chemistry of hemicellulose and the role of different branches.
FUEL PROCESSING TECHNOLOGY
(2024)
Review
Chemistry, Applied
Youwei Zhi, Donghai Xu, Guanyu Jiang, Wanpeng Yang, Zhilin Chen, Peigao Duan, Jie Zhang
Summary: Hydrothermal carbonization (HTC) is an effective method for the harmless disposal of municipal sludge (MS) and offers potential applications for the obtained products. Optimizing reaction conditions, coupling with other waste materials, and combining different processes can improve the performance of HTC. Furthermore, HTC contributes to energy recovery and enhances the quality of life cycle assessment.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Jia Wang, Jianchun Jiang, Dongxian Li, Xianzhi Meng, Arthur J. Ragauskas
Summary: This study presents a scalable process for converting holocellulose and cellulosic wastes into advanced oxygen-containing biofuels with high furan, cyclic ketone, and ethanol content. By combining hydropyrolysis and vapor-phase hydrodeoxygenation using Pd/Al2O3 as a catalyst, the researchers achieved high yields and conversions. The integrated process holds great promise for biomass waste conversion into advanced biofuels.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Florian Held, Jannis Reusch, Steffen Salenbauch, Christian Hasse
Summary: The accurate prediction and assessment of soot emissions in internal combustion engines are crucial for the development of sustainable powertrains. This study presents a detailed quadrature-based method of moments (QMOM) soot model coupled with a state-of-the-art flow solver for the simulation of gasoline engines. The model accurately describes the entire cause-and-effect chain of soot formation, growth and oxidation. Experimental validation and engine cycle simulations are used to identify the root cause of observed soot formation hotspots.
FUEL PROCESSING TECHNOLOGY
(2024)
