Article
Engineering, Environmental
Young-Gwang Kim, Dawoon Jeong, Wooyong Um, Kyoung-Woong Kim, Myoung-Soo Ko
Summary: The study revealed that sulfur-oxidizing bacteria have tolerance to Co and Cs exposure and gamma-ray irradiation, and can effectively remove radionuclides from contaminated soil. The bioleaching process showed potential as a remediation strategy for radionuclide contaminated soils, significantly improving removal efficiency.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Sang-Min Park, Taesun Kim, Young-Hun Kim, Kitae Baek
Summary: The study proposed a hybrid process incorporating soil washing and selective adsorption for treating cesium-contaminated soil, achieving a 99% extraction rate through a multi-step extraction process. The synthesized adsorbent selectively removed cesium from the aqueous solution even in the presence of a high concentration of potassium ions, demonstrating the effectiveness of the hybrid process.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Rocio Montes de Oca-Palma, Marcos Solache-Rios, Melania Jimenez-Reyes, Jose Juan Garcia-Sanchez, Perla Tatiana Almazan-Sanchez
Summary: The adsorption properties of cobalt ions on sediment samples from water bodies were investigated, revealing that the composition of sediments plays a significant role in their adsorption capacities. S1 showed higher removal efficiency and adsorption capacity for cobalt compared to S2, indicating the important adsorption properties of sediments for cobalt.
INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH
(2021)
Review
Chemistry, Multidisciplinary
Erwin C. Escobar, John Edward L. Sio, Rey Eliseo C. Torrejos, Hern Kim, Wook-Jin Chung, Grace M. Nisola
Summary: Sorbents utilizing organic molecules as Cs+-selective ionophores have gained increasing attention due to their stability and reusability in acidic and alkaline aqueous environments. This review describes and compares organic-based sorbents and ligands for Cs+, and discusses the mechanisms behind their efficacy for Cs+ sequestration. Additionally, improvements to sorbent development and a platform for the preparation of stimuli-responsive sorbents are proposed.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Review
Environmental Sciences
Jung Hwan Kim, Hassan Anwer, Yong Soo Kim, Jae-Woo Park
Summary: The study reviewed the washing of radioactive Cs-contaminated concrete and soil with a focus on the parameters of washing solution, clay components in the soil, and aggregates affecting the efficiency and mechanism for Cs decontamination. The research also discussed the importance of different sorption materials for treatment of Cs-contaminated supernatant, categorizing them into clay minerals, metal hexacyanoferrates, ammonium molybdophosphates, hypercrosslinked polymers, supramolecular sorbents, carbon nanotubes, and graphene oxide.
Article
Environmental Sciences
Norbert Kavasi, Hideki Arae, Tatsuo Aono, Sarata Kumar Sahoo
Summary: Sr-90 and Cs-137 activity concentrations in soil samples from the Fukushima exclusion zone were determined using radiometric methods. The results showed that Sr-90 and Cs-137 activity concentrations ranged from 3 to 1050 Bq kg(-1) and 0.7 to 6770 kBq center dot kg(-1), respectively. A strong positive correlation between Sr-90 and Cs-137 activity concentration was found, and it was confirmed that Sr-90 has higher mobility in Japanese soil samples. The activity ratio of Sr-90/Cs-137 indicated that the Sr-90 released to the atmosphere was negligible compared to other nuclear accidents, and Cs-137 remains the primary pollutant of the Fukushima Dai-ichi Nuclear Power Station accident.
ENVIRONMENTAL POLLUTION
(2023)
Article
Chemistry, Inorganic & Nuclear
Xiaohua Cheng, Sijia Yue, Runan Chen, Jun Yin, Bin-Bin Cui
Summary: In this study, the photoluminescence properties of a class of one-dimensional organic-inorganic hybrid metal halides were investigated, and the significant impact of different halogens on crystal structures and emission mechanisms was demonstrated. TMGPbCl(3) showed promising potential in white-light emission for solid-state lighting applications.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Shabnam Amin, Seyed Abolhasan Alavi, Hasan Aghayan, Hassan Yousefnia
Summary: The surfaces of microporous metal-organic frameworks were modified and used as a nanocomposite ion exchanger to remove cesium ions from aqueous solutions. The synthesized compounds were characterized using various techniques, and the effects of adsorption parameters were determined. The adsorption kinetics and isotherm models were applied to evaluate the Cs adsorption process. The results showed rapid adsorption equilibrium, high adsorption capacity, and good selectivity of the nanocomposite. The material also exhibited good stability and reusability.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Hisashi Hayashi
Summary: We investigated the sorption/desorption properties of Cs in agarose gel using Mn-Fe based Prussian blue analogs and Prussian blue. Mn-Fe PBA gel showed better Cs sorption capacity and formed periodic precipitation bands compared to PB gel. Mn-Fe PBA gel effectively suppressed the release of Cs during desorption.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Environmental Sciences
Takahiro Tatsuno, Hiromichi Waki, Minato Kakuma, Naoto Nihei, Tsugiko Takase, Toshihiro Wada, Kazuya Yoshimura, Takahiro Nakanishi, Nobuhito Ohte
Summary: This study investigated the effect of radioactive cesium-rich microparticles (CsMPs) on the particulate RCs concentration and Kd in two rivers (Takase River and Kami-Oguni River) flowing through watersheds with different contaminated levels in Fukushima Prefecture. CsMPs may enter rivers through soil erosion, and the proportion of CsMPs in particulate RCs was higher in the Kami-Oguni River than in the Takase River during flood events. However, the overall contribution of CsMPs to the RCs concentrations in river waters during the flood event was not significant when evaluated throughout the event.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Chemistry, Physical
Yuhao Fu, Lijun Zhang, Huimin Mu, Yilin Zhang, Hongshuai Zou, Fuyu Tian
Summary: In this study, first-principles calculations were used to investigate the thermal properties of halide perovskites. It was found that the large thermal expansion of these materials is mainly due to their low bulk modulus and volumetric heat capacity, resulting from the soft crystal lattice. The composition-dependent anharmonicity was identified as the most important factor in determining thermal expansion. By weakening the B-X bond, the thermal expansion of halide perovskites can be decreased. An effective thermal expansion coefficient descriptor was also proposed. These findings provide insights into the mechanisms and chemical trends of thermal expansion behavior in halide perovskites.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Green & Sustainable Science & Technology
Arwa A. Abdelhamid, Mogeda H. Badr, Ramadan A. Mohamed, Hosam M. Saleh
Summary: In this study, dried ground mixed waste of olive waste and water hyacinth was used to treat wastewater contaminated with stable or radioactive cobalt and cesium. Factors such as contact time, temperature, amount of adsorbent, metal ion concentration, and pH-value were evaluated for their impact on the adsorption process. The experimental results showed that more than 85% of Co-60 and Cs-134 can be efficiently removed from spiked wastewater within one hour using 0.2 g of dried mixed waste. The kinetic study indicated that the adsorption of Cs+ and Co2+ followed the second order reaction.
Article
Agronomy
Xinliang Dong, Jintao Wang, Xuejia Zhang, Hongkai Dang, Bhupinder Pal Singh, Xiaojing Liu, Hongyong Sun
Summary: Saline water irrigation has a significant impact on soil carbon sequestration. High concentration of saline water irrigation increases soil water and salt contents, leading to a significant decrease in soil organic carbon and inorganic carbon contents. In contrast, low concentration of saline water irrigation does not have a significant effect on soil carbon sequestration. Using no more than 4 g/L saline water irrigation can maintain soil carbon storage in water shortage areas.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Engineering, Environmental
Yan-Min Zou, Wen Ma, Hai-Yan Sun, Jun-Hao Tang, Tian-Tian Lv, Mei-Ling Feng, Xiao-Ying Huang
Summary: This study achieves efficient recovery of Cs+ ions using vanadyl oxalatophosphates, demonstrating fast kinetics, high adsorption capacity, broad pH durability, and radiation stability. The underlying mechanism of Cs+ capture is illuminated at the molecular level through single-crystal structural analysis.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Jiwoo Yu, Aurelia C. Wang, Mingyue Zhang, Zhiqun Lin
Summary: Nanomaterials, especially inorganic nanoparticles/cellulose hybrid nanocomposites, show great potential in water purification technology by reducing costs, improving pollutant selectivity, and enhancing adsorption efficiency. The engineering design and applications in pollutant adsorption and other activities of such composites will bring more development opportunities for water treatment.
Article
Engineering, Environmental
Xingxing Hu, Lingjie Liu, Yanmeng Bi, Lu Li, Chunsheng Qiu, Jingjie Yu, Shaopo Wang
Summary: In this study, the impact of exogenous folate on the start-up process of single-stage partial nitritation-anammox (SPNA) was evaluated using two lab-scale reactors. The results showed that folate addition can enhance nitrogen removal rate, extracellular polymeric substances production, hydrazine oxidase and dehydrogenase activity, as well as the relative abundance of Candidatus Brocadia.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Shaocang He, Tingting Shen, Jing Sun, Haoqi Pan, Chenxu Sun, Tianpeng Li, Runyao Li, Enshan Zhang
Summary: A novel process of acid leaching neutralization was developed for the preparation of inorganic polymeric composite ferric aluminum silicate coagulant (CFAS) using solid waste coal gasification coarse slag (CGCS). The optimized preparation process was determined through single-factor experiment and the performance of CFAS was evaluated for domestic sewage treatment. The results showed that CFAS exhibited excellent coagulation ability and achieved significant removal efficiency for turbidity, ammonia nitrogen, and chemical oxygen demand.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Kinga Szatmari, Sandor Nemeth, Alex Kummer
Summary: In this article, a resilience-based reinforcement learning approach is proposed to address the potential thermal runaway issue in batch reactors. By calculating the resilience metric for reactors and utilizing Deep Q-learning to decide when to intervene in the system, resilient-based mitigation systems can be effectively developed.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Bingyou Jiang, Qi Yao, Mingqing Su, Jingjing Li, Kunlun Lu, Dawei Ding, Han Hong
Summary: This study investigates the inhibitory characteristics and mechanisms of ABC powder on coal powder explosion. The addition of ABC powder significantly decreases the maximum explosion pressure and can completely suppress coal dust explosions. The study also reveals the thermal decomposition characteristics and reaction kinetics of the mixed system.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Kubilay Bayramoglu, Mustafa Nuran
Summary: This study examines the feasibility of using pyrolytic oil from waste tires as fuel in diesel engines, and evaluates its energy, exergy, and sustainability. The results indicate that pyrolytic oil has potential as a renewable fuel source with relatively high thermal efficiency.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Xinru Duan, Yejia Lv, Jiaxing Hong, Jianzhong Wu, Jia Zhang, Yang Yue, Guangren Qian
Summary: This study successfully prepared a tube reactor with optimized catalyst formula, which showed good performance in removing dioxins and other pollutants in the experiments.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Jiaoyang Du, Xueming Dang, Xiaorong Gan, Xin Cui, Huimin Zhao
Summary: In this study, a photocatalyst-enzyme hybrid system was constructed, which solved the issue of enzyme inactivation caused by high concentration of H2O2 through photocatalytic in-situ H2O2 production, and improved the stability and catalytic efficiency of the enzyme. The effectiveness of the system in treating phenolic EDCs was confirmed through experiments.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Fu-Rong Xiu, Longsheng Zhan, Yingying Qi, Xinyue Lei, Jiali Wang, Haipeng Zhou, Wenting Shao
Summary: This study developed a synergetic and high-efficiency treatment of waste tantalum capacitors (WTCs) and polyvinyl chloride (PVC) using subcritical water process. The treatment significantly reduced the temperature and reaction time for metal tantalum recovery from WTCs, and improved the dechlorination efficiency of PVC. The optimized conditions resulted in 100% resin conversion efficiency of WTCs and 97.39% dechlorination efficiency of PVC. The interaction between decomposition products of WTCs and PVC produced a high level of benzoic acid.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Bingda Li, Jiaming Song, Yuting Li, Chaoying Meng, Shuxian Wang, Linghao Zong, Honggang Ye, Yishuai Jing, Feng Teng, Peng Hu, Haibo Fan, Guangde Chen, Xin Zhao
Summary: CdPS3 nanosheets, especially those exfoliated by sodium cholate, have shown highly efficient photocatalytic degradation performance. The strong dark adsorption and dye-sensitized photocatalytic properties of CdPS3 nanosheets contribute to high degradation efficiencies of various pollutants.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Dongxu Ouyang, Yimei Pang, Bo Liu, Zhirong Wang
Summary: This study investigates the thermal runaway features of lithium-ion cells under tunnel conditions, considering different states of charge and tunnel ceilings. The results show that the tunnel visibility is affected by the smoke generated during thermal runaway, and the shape of the tunnel ceiling influences the temperature rise differently.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)