Article
Chemistry, Applied
Qi He, Wei Deng, Kai Xu, Long Jiang, Jun Xu, Sheng Su, Xun Hu, Yi Wang, Song Hu, Jun Xiang
Summary: This study investigates the effect of torrefaction on the formation of heavy components in pyrolysis oil from automobile shredder residue (ASR). The results suggest that torrefaction enhances the interaction between volatile compounds and semi-char, leading to increased content of heavy components and decreased content of heavy components containing heteroatoms in the pyrolysis oil.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Engineering, Environmental
Yang Ren, Chengyang Cao, Yetao Cheng, Hongyun Hu, Hui Liu, Xian Li, Huimin Liu, Hong Yao
Summary: This study investigated the pyrolysis behavior of automobile shredder residue (ASR) under a wide range of heating rates using high-temperature flue gas as the heat source in power plants. Results showed that high heating rates improved the homogenization of pyrolytic products and the generation of aromatics in oil, as well as the cleavage of single bonds and carbon-oxygen bonds. Enhanced cracking of volatiles significantly reduced the wax-like fraction, while deoxygenation in oil and the high heating value of gases were improved. These findings demonstrate the feasibility and economic efficiency of co-processing ASR in coal-fired power plants via pyrolysis and provide guidance for future commercial application.
Article
Engineering, Chemical
Hefeng Yang, Xiangming Li, Yuting Wang, Junxia Wang, Lihong Yang, Zhiqiang Ma, Jipeng Luo, Xiaoqiang Cui, Beibei Yan, Guanyi Chen
Summary: The objective of this study was to investigate the feasibility of using modified biochars to enhance removal of ammonium from aqueous solution. Modified biochars were prepared from wheat straw through NaOH-modification and ball-milling treatment, which significantly changed the surface morphology and characteristics of biochar. The modified biochars showed considerable ammonium sorption capacity in a wide pH range (3-7), and the NaOH-modified ball-milled biochar showed the highest ammonium sorption capacity.
Article
Chemistry, Applied
Kaixuan Song, Yijun Li, Min Nie, Qi Wang
Summary: With a new strategy for ASR recycling, high value-added rigid polyurethane foams (RPUFs) with excellent mechanical and thermal properties have been prepared. This not only optimizes the mechanical and thermal properties, but also achieves the recycling of ASR and expands the application scope of RPUFs.
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
(2021)
Article
Computer Science, Interdisciplinary Applications
Yuanzhang Bai, Kaixuan Song, Yucheng Hou, Ning Chen, Yijun Li
Summary: With the growth of the automobile industry, the recycling of automobile shredder residue (ASR) has become an urgent issue due to its complex composition and difficulty in traditional recycling methods. This study successfully applied solid-state shear milling technology to modify the processability of ASR, allowing for its melt processing and the preparation of a high-density polyethylene (HDPE)/ASR composite with superior mechanical properties compared to commercially available recycled PE. This research not only provides a feasible application route for ASR recycling but also demonstrates a viable method for recycling polymer waste with complicated components through physical recycling.
ENGINEERING REPORTS
(2023)
Article
Engineering, Environmental
Yan Sun, Yaguang Du, Jirong Lan, Wei Zhan, Tian C. Zhang
Summary: A new method utilizing ball milling and sodium sulfide has been developed for efficient treatment of hexavalent chromium in soda ash Chromite Ore Processing Residue. This method significantly reduced the Cr(VI) concentration and achieved a high reduction efficiency. The results showed improved liberation of chromite grains and reduction of Cr(VI) in chromite and magnesioferrite, providing guidance for future industrial applications.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Nannan Song, Zhongwei Chen, Yuan Yu, Boran Yang, Yong Guo, Yanpeng Chu, Tingting Chen, Yuhang Bi, Qingwu Zhang, Chao Feng, Juncheng Jiang
Summary: A surface treatment strategy using ball milling was proposed to modify waste electrolytic manganese residue (EMR) with red phosphorus and graphitic carbon nitride (g-C3N4), resulting in flame retardant EMR-PCN. When added to epoxy resin, the EMR-PCN enhanced its flame retardancy, reducing fire hazards.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Xiao-jian Wang, Shi-li Zheng, Ying Zhang, Yang Zhang, Shan Qiao, Zhi-qi Long, Bo Zhao, Zhe-fei Li
Summary: A mechanical-chemical process for recovering iron phosphate residue from spent lithium iron phosphate was proposed. The process involved pretreating the residue through ball-milling and leaching with sulfuric acid. The results showed that this process significantly improved the leaching efficiency of iron phosphate, while requiring lower sulfuric acid dosage. This study demonstrates the potential of the mechanical-chemical process for industrial applications.
Article
Green & Sustainable Science & Technology
Lanbin Wang, Yan Sun, Yaguang Du, Hong Tian, Wei Zhan, Tian C. Zhang
Summary: This study proposes a ball milling + waste molasses method to detoxify leached-soda ash Chromium Ore Processing Residue (COPR). Under the best conditions, the reduction efficiency of Cr(VI) reached 98.35%, and the TCLP total Cr concentration met the standard of the US Environmental Protection Agency. The study provides a cost-effective method for COPR detoxification and offers a new reference for waste disposal.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Electrical & Electronic
Li Rongyi, Long Changjin, Zhao Wenkai, Zhao Libo, Zhu Junshan, Bai Tingyue
Summary: This article studies the cutting force prediction model for ball-end milling cutter in the splicing area of automobile cover mold. By analyzing the impact at the moment of contact between the cutter and the workpiece, an instantaneous chip thickness model considering impact factors and a state model calibrating the cutting state by coefficients are established. Experimental verification results show the accuracy of the model and its guiding significance for actual processing.
INTEGRATED FERROELECTRICS
(2022)
Article
Chemistry, Multidisciplinary
Lydia A. Panther, Daniel P. Guest, Andrew McGown, Hugo Emerit, Raysa Khan Tareque, Arathy Jose, Chris M. Dadswell, Simon J. Coles, Graham J. Tizzard, Ramon Gonzalez-Mendez, Charles A. Goodall, Mark C. Bagley, John Spencer, Barnaby W. Greenland
Summary: Solvent-free synthesis using a vibratory ball mill enables new chemical reactions with reduced solvent waste and shorter reaction times. This study reports the functionalization of Br-2-NDI through Suzuki, Sonogashira, and Buchwald-Hartwig coupling reactions, producing important building blocks for organic electronics.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Physical
Kaaviah Manoharan, Rajashabala Sundaram, Kannan Raman
Summary: This study focuses on the effective storage of hydrogen using a ball-milled core-shell nanocomposite. The experiment demonstrates that the prepared material has excellent hydrogen storage capacity and can serve as an electrode material for energy storage devices.
Article
Materials Science, Multidisciplinary
Shuai Wang, Zhenfei Cai, Qinyu Wu, Qi Li, Zishan Ahsan, Yangzhou Ma, Hemin Jing, Guangsheng Song, Weidong Yang, Cuie Wen
Summary: Scalable wet high-energy ball milling was used to refine commercial micro-silicon, and water and ethanol were used as process control agents (PCA). The type of PCA used affected the formation of amorphous silicon oxide on the surface of silicon particles, resulting in variations in electrochemical performance. The ball-milled silicon powder with a silicon-to-ethanol ratio of 1:9 showed the best electrochemical performance, displaying good cycling stability.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Chemistry, Multidisciplinary
O. Sanda, O. E. Ehinmitola, E. A. Taiwo
Summary: This study investigated the dissolution kinetics of roasted residue from spent 6F22 zinc-carbon dry cells in nitric and hydrochloric acid, aiming to recover manganese and zinc content. Dismantled and roasted spent 9F22 batteries from various locations in Ile Ife, Nigeria were sieved to obtain particles <140 μm. Leaching experiments were conducted at a constant temperature of 90°C and stirring speed of 200 rpm. Different acid concentrations and leaching times were tested. The results showed that the dissolution process is primarily controlled by chemical reactions, with zinc dissolving over 90% under all conditions, but less than 60% of manganese dissolving, with iron facilitating its dissolution. The reaction rate constants increased with acid concentration, and higher yields of manganese and zinc were obtained with hydrochloric acid.
CHEMISTRY AFRICA-A JOURNAL OF THE TUNISIAN CHEMICAL SOCIETY
(2023)
Article
Engineering, Chemical
Tomohito Kameda, Yuriko Takahashi, Shogo Kumagai, Yuko Saito, Satoshi Fujita, Ichirou Itou, Tianye Han, Toshiaki Yoshioka
Summary: In this study, the removal of NO from HCl-SO2-NO mixed gas using MnO2/Mg-Al LDH was investigated, and the influence of CO2 gas, as well as the regeneration and cyclic use of MnO2/Mg-Al LDH, were examined.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Correction
Chemistry, Multidisciplinary
Chuan Ma, Shogo Kumagai, Yuko Saito, Tomohito Kameda, Toshiaki Yoshioka
Article
Environmental Sciences
Harendra Kumar, Shogo Kumagai, Tomohito Kameda, Yuko Saito, Toshiaki Yoshioka
Summary: The study investigated bench-scale recovery of Cu wires, PVC coatings, and plasticizers from long non-uniform cables using wet and dry rod milling with n-butyl acetate or acetone as swelling solvents at different temperatures. Results showed that acetone had a faster separation rate at temperatures >= 35 degrees C in wet milling. Both methods achieved full recovery of materials at optimal conditions, contributing to the development of future industrial processes.
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2022)
Article
Chemistry, Applied
Tomohito Kameda, Yuriko Takahashi, Shogo Kumagai, Yuko Saito, Satoshi Fujita, Ichirou Itou, Tianye Han, Toshiaki Yoshioka
Summary: Two easily synthesized Mg-Al layered double hydroxides (LDHs) with efficient acidic gas removal characteristics have been developed. The OH.Mg-Al LDH showed a higher gas removal efficiency due to the presence of intercalated OH- anions between the LDH layers.
JOURNAL OF POROUS MATERIALS
(2022)
Article
Chemistry, Physical
Shengyu Xie, Chuan Ma, Shogo Kumagai, Yusuke Takahashi, Tomohito Kameda, Yuko Saito, Toshiaki Yoshioka
Summary: The co-pyrolysis of biomass and plastic is a promising technology for producing valuable chemicals. Using a split-flow tube reactor enhances the yields of valuable chemicals and increases hydrocarbon-oil production.
SUSTAINABLE ENERGY & FUELS
(2022)
Article
Chemistry, Physical
Kie Waizumi, Tomohito Kameda, Shogo Kumagai, Yuko Saito, Toshiaki Yoshioka
Summary: This study demonstrates the potential of using linear and cyclic organic sulfonic acid-modified layered double hydroxides (LDHs) for the selective adsorption of aromatic organic compounds. Experimental results show that the linear organic anion-modified LDH exhibits excellent adsorption performance towards m-nitrophenol, while the cyclic organic anion-modified LDH shows good adsorption capacity for m-aminophenol.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Analytical
Shogo Kumagai, Masumi Sato, Chuan Ma, Yumi Nakai, Tomohito Kameda, Yuko Saito, Atsushi Watanabe, Chuichi Watanabe, Norio Teramae, Toshiaki Yoshioka
Summary: The thermal-oxidative degradation of sulfur-based plastics (PPS, PES, and PSU) was investigated using various techniques. The results showed that these plastics undergo decomposition at specific temperatures under different atmospheres, and their chemical structures are altered during degradation. The thermo-oxidative products were also analyzed, providing insights into the degradation behavior of sulfur-based plastics. Combining conventional techniques with advanced analytical technologies, this study comprehensively characterized the degradation behavior of sulfur-based plastics.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Chemistry, Multidisciplinary
Chuan Ma, Shogo Kumagai, Yuko Saito, Tomohito Kameda, Atsushi Watanabe, Chuichi Watanabe, Norio Teramae, Toshiaki Yoshioka
Summary: The conversion of plastic wastes into benzene, toluene, and xylenes (BTX) using hierarchical ZSM-5 zeolites and biochar (BC) is a promising strategy for achieving a circular economy and carbon neutrality.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Engineering, Environmental
Ukyo Suzuki, Tomohito Kameda, Shogo Kumagai, Yuko Saito, Toshiaki Yoshioka
Summary: In this study, TiO2-P25 was modified with benzoic acid and 2-naphthalenecarboxylic acid to adsorb bisphenol A (BPA). The hydrophobicity of the modified TiO2 was found to affect the amount of BPA adsorbed. Different models were used to analyze the equilibrium adsorption data. TiO2 and TixZr(1-x)O2 with high specific surface area were synthesized and modified with NCA for BPA adsorption. The specific surface area and amount of modification were found to be higher in TixZr(1-x)O2 compared to TiO2. The maximum amount of BPA adsorbed was significantly increased compared to TiO2-P25.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Environmental
Shengyu Xie, Shogo Kumagai, Naomichi Takahashi, Tomohito Kameda, Yuko Saito, Toshiaki Yoshioka
Summary: This study utilized hierarchical clustering analysis and response surface methodology to rapidly determine the synergies and predict the product yields of xylan and polyethylene co-pyrolysis. The results showed that co-pyrolysis promoted liquid production and suppressed solid and char formation. The pyrolytic interactions improved the decomposition of PE-derived wax, resulting in higher yields of heavy gas oil and C >= 26 hydrocarbons.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Zhuze Shao, Shogo Kumagai, Tomohito Kameda, Yuko Saito, Toshiaki Yoshioka
Summary: In this study, poly-lactic acid (PLA) and poly-3-hydroxybutyrate-co-3-hydroxyhexanoate (PHBH) were pyrolyzed at different temperatures and heating rates using Py-GC/MS. The main pyrolysis products of PLA were acetaldehyde, lactide, and oligomers, while crotonic acid and its oligomers accounted for most of the PHBH pyrolyzates. The pyrolysis temperature had a significant effect on product distribution, and lactide and crotonic acid showed high yields at specific temperatures.
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2023)
Article
Engineering, Chemical
Tomohito Kameda, Satoru Nagano, Shogo Kumagai, Yuko Saito, Toshiaki Yoshioka
Summary: This study investigates the potential of CO3 center dot Mg-Al layered double hydroxides (LDHs) as CO2 adsorbents. The results demonstrate that CO3 center dot Mg-Al LDH has high CO2 adsorption capacity and CO2 desorption rate, making it a promising material for CO2 capture and storage.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Chemistry, Physical
Itsuki Takanashi, Tomohito Kameda, Shogo Kumagai, Yuko Saito, Yasuyuki Nomura, Daiki Kawamura, Toshiaki Yoshioka
Summary: This study successfully established a new sol-gel synthesis method for layered double oxides (LDO) by adding organic chains. The LDO synthesized by this method showed approximately 2.6 times larger specific surface area compared to the LDO synthesized by the coprecipitation method. Furthermore, the addition of organic chains in the sol-gel synthesis process further increased the specific surface area of LDO, achieving a value approximately 2.7 times higher than that of LDO synthesized by the coprecipitation method. The maximum adsorption amount for arsenic on LDO synthesized by the sol-gel method was calculated to be 282.6 mg/g. The results confirmed the correlation between specific surface area and adsorption capacity, and demonstrated the successful synthesis of LDO with enhanced adsorption capacity using this method.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Tomohito Kameda, Yuriko Takahashi, Shogo Kumagai, Yuko Saito, Satoshi Fujita, Ichirou Itou, Tianye Han, Toshiaki Yoshioka
Summary: This study investigated the effects of different preparation methods on the removal of NO using Mg-Al layered double hydroxide (LDH). The results showed that MnO2/Mg-Al LDH prepared by rehydration and anion exchange exhibited high NO removal rates, while MnO2/Mg-Al LDH prepared by co-precipitation had poor NO removing ability. The presence of MnO2 and Mn2O3 as bridges between LDH layers was found to be essential for the oxidation of NO.
RESULTS IN CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Tomohito Kameda, Tanya Kurutach, Yuriko Takahashi, Shogo Kumagai, Yuko Saito, Satoshi Fujita, Ichirou Itou, Tianye Han, Toshiaki Yoshioka
Summary: A novel method using MnO2/Mg-Al layered double hydroxide (MnO2/Mg-Al LDH) for treatment of acidic gases is presented in this study, which efficiently removes HCl, SO2, and NOx. The dry process was used to recover the adsorbed gases from LDH, achieving their reuse and regeneration of the adsorbent. The experimental results showed high efficiency and concentration in the recovery of HCl, NO, and SO2 using MnO2/Mg-Al LDH.
RESULTS IN CHEMISTRY
(2022)
