Article
Engineering, Environmental
Hailong Li, Wei Zheng, Wenqi Qu, Lijian Leng, Yong Feng, Feng Xin, Gang Sheng, Zequn Yang, Kaimin Shih, Jianping Yang
Summary: This work successfully optimized the preparation simplicity and sequestration performance of metal selenides by adopting a facile precipitation method for the synthesis of copper selenide (CuSe) sorbent. The CuSe prepared via room-temperature precipitation exhibited much superior Hg0 sequestration performance compared to samples prepared under high-temperature hydrothermal conditions, showing adsorption capacity and rate reaching 345 mg g-1 and 42.5 mu g g-1 min-1.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Ying Zhou, Yiang Fan, Jiliang Zhang, Changzhong Liao, Minhua Su, Ting-Shan Chan, Ying-Rui Lu, Yu-Chun Chuang, Giin-Yu Amy Tan, Kaimin Shih
Summary: The research utilized an anion intercalation strategy to functionalize polytriazine imides (PTIs) for improved heavy metal adsorption performance; The interplanar spacing was adjusted by controlling the salt matrix, temperature, and reaction time, enhancing the adsorption of lead cations (Pb2+); A new method based on the correlation between interplanar spacing and intercalated halide amounts was proposed, suggesting potential for efficient sorbent design for water purification.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Xiaoman Liu, Chang Tian, Yanxia Zhao, Weiying Xu, Dehua Dong, Kaimin Shih, Tao Yan, Wen Song
Summary: This study investigated the filtration performance of ceramic membrane enhanced by a new titanium-based coagulant and simulated the fouling process using mathematical models. The results showed that the ceramic membrane treated with the titanium-based coagulant achieved efficient removal of organic matter and high permeation flux.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2022)
Article
Engineering, Environmental
Yu Li, Jiemin Chen, Jie Zhong, Bin Yang, Zequn Yang, Kaimin Shih, Yong Feng
Summary: The use of natural pyrite as a cocatalyst in Fenton-like reactions to improve the reactivity of Fe3+ was studied. The presence of pyrite significantly enhanced the degradation of sulfamethoxazole by Fe3+-peroxymonosulfate, outperforming the widely investigated molybdenum disulfide. The cocatalyst showed good stability and worked effectively in a wide range of pH values. Sulfate radicals were found to be the main responsible species for the degradation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Jingdong Yang, Yu Li, Zequn Yang, Kaimin Shih, Guang-Guo Ying, Yong Feng
Summary: In this study, the combination of ozone and peroxymonosulfate (PMS) was used for the first time to remove 1,4-dioxane from water, achieving near complete degradation within 15 minutes. The degradation process was found to be positively correlated with the doses of PMS and ozone, and showed optimum performance at slight base pH values. The oxidation generated sulfate and hydroxyl radicals that contributed to the degradation of 1,4-dioxane.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Metallurgy & Metallurgical Engineering
Qiang Feng, Changzhong Liao, Cheng Dong, Kaimin Shih, Minhua Su
Summary: A new ternary Mg1.4Co21.6B6 compound was synthesized and its crystal structure, thermal stability, solid solubility, and physical properties were systematically investigated. The compound showed instability and decomposition into Co3B and Mg at elevated temperatures. The lattice parameters of the compound were significantly affected by Ni substitution, but no regular trend was observed. The electrical and magnetic performances of the samples indicated typical ferromagnetic properties.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Chemistry, Multidisciplinary
Zhe Meng, Weiwei Huang, Lei Gao, Jinchuan Dai, Xiaoying Lu, Jiadong Liu, Haiyou Huang, Kaimin Shih, Yuanyuan Tang
Summary: This study proposed a PVC-LCO synergetic pyrolysis strategy for Li/Co recovery from waste lithium-ion batteries. The results showed that the strategy had distinct advantages in terms of energy conservation and chemical-free features, providing an economical, green, and scalable solution for LIB recycle.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Inorganic & Nuclear
Qian Zhao, Changzhong Liao, Guangyuan Chen, Ruixi Liu, Zeru Wang, Anhu Xu, Shiyin Ji, Kaimin Shih, Lin Zhu, Tao Duan
Summary: In this study, a facile in situ confined synthesis strategy is developed to design and synthesize a copper-encapsulated flaky silicalite-1 (Cu@FSL-1) zeolite with high iodine uptake capacity and stability. The maximum iodine uptake capacity of Cu@FSL-1 reaches 625 mg g-1, which is twice as high as that of a commercial silver-exchanged zeolite. This study provides new insight into efficient iodine capture from gaseous radioactive streams using zeolite-confined metal adsorbents.
INORGANIC CHEMISTRY
(2022)
Article
Environmental Sciences
Shijie Zhang, Weihua Gu, Zhixin Geng, Jianfeng Bai, Bin Dong, Jing Zhao, Xuning Zhuang, Kaimin Shih
Summary: Sludge pyrolysis is an important method for recycling sludge, and stabilizing heavy metals in sludge is crucial for effective sludge recycling. This study investigated the impact and mechanism of co-pyrolysis of sludge and CaSiO3, and successfully demonstrated the concept of treating waste with waste. The addition of CaSiO3 in the co-pyrolysis process significantly stabilized heavy metals and promoted the formation of stable compounds.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Zexiao Zheng, Jiacheng Min, Xiaoying Wang, Cheuk Wai Lung, Kaimin Shih, Irene M. C. Lo
Summary: In this study, an S-scheme magnetic ZnFe2O4/ammoniatedMoS(2) (ZnFe2O4/A-MoS2) heterojunction was developed as a visible-light-driven PMS activator for PPCP degradation, achieving enhanced photocatalytic activity.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Zhe Xu, Guangfu Luo, Yi'ang Fan, Yunxue Xia, Jiangpeng Li, Jianshuai Zhang, Kaimin Shih, Yuanyuan Tang
Summary: Cu(FexAl2-x)O4-embedded sediment ceramic membranes (CuFeAl@SCMs) were fabricated and utilized for continuous bisphe-nol A (BPA) degradation with peroxymonosulfate (PMS) activation. The CuFeAl@SCM-42 membrane exhibited the highest BPA degradation efficiency (98.3%). SO4 and ·OH were identified as the main ROS involved in the degradation process. DFT calculations confirmed that Al doping enhanced the adsorption energy and electron transfer rate, promoting PMS activation for BPA degradation. The prepared CuFeAl@SCM-42 membrane showed outstanding performance in various water environments, demonstrating its excellent practicability, stability, and recyclability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
Qi Zhao, Shengshou Ma, Wanghoe Ho, Yixuan Wang, Jaden Yuen Tao Ho, Kaimin Shih
Summary: This study developed a simple and environmentally friendly method for metal recovery from waste printed circuit boards (WPCBs) using deep eutectic solvents (DESs). The results showed that the DESs can efficiently leach and recover metals such as zinc, lead, copper, and tin.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Chemical
Jingdong Yang, Yu Li, Zequn Yang, Guang-Guo Ying, Kaimin Shih, Yong Feng
Summary: The catalytic ozonation of porous carbonaceous materials holds great potential for the treatment of refractory organic contaminants. However, the formation mechanism of hydroxyl radicals and the contribution of reactive oxygen species (ROS) remains contentious. This study used highly porous biochar (HPB700) as a model material and investigated the formation, evolution, and contribution of ROS during catalytic ozonation. The results showed that free hydroxyl radicals were generated during the process, and hydrogen peroxide played a key role in their formation. The findings enhance our understanding of hydroxyl radical formation and the role of different ROS in pollutant degradation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Chao Yang, Lin Lin, Shanshan Shang, Shengshou Ma, Feiyun Sun, Kaimin Shih, Xiao-yan Li
Summary: This study introduces an innovative electrochemical wastewater treatment technology using packed bead-electrodes as a dynamic electrocatalytic filter, which expands the electroactive volume and greatly enhances the efficiency of electrochemical degradation of micropollutants. This technology has the potential to revolutionize electrochemical wastewater treatment and effectively control emerging pollutants in the water environment.
Article
Chemistry, Physical
Wei Zheng, Zequn Yang, Jianping Yang, Wenqi Qu, Yong Feng, Shaojian Jiang, Shilin Zhao, Kaimin Shih, Hailong Li
Summary: A novel template regulation method is proposed to synthesize copper sulfide with improved mercury adsorption capacity, overcoming the density limitation of copper sulfide.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)