Removal of Radionuclides from Aqueous Solution by Manganese Dioxide-Based Nanomaterials and Mechanism Research: A Review

Ma, Junping; Wang, Chen; Xi, Wenke; Zhao, Qing; Wang, Siyi; Qiu, Muqing; Wang, Jianjun; Wang, Xiangke

doi:10.1021/acsestengg.0c00268

Cited by 59 publications

(13 citation statements)

References 111 publications

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“…Relevant scholars used a combination of qualitative and quantitative methods to carry out post-evaluation research into the environmental impact of the reservoir when conducting the post-evaluation of the environmental impact of the Fengjiashan Reservoir, expounding the relevant theories and technical methods of the post-evaluation of the environmental impact of the project [17]. On the basis of on-site investigation, the environmental impact of Fengjiashan Reservoir was analyzed qualitatively and quantitatively by using the method of comparison, and finally the beneficial and negative impacts of the reservoir were analyzed systematically [18][19][20].…”

Section: Related Workmentioning

confidence: 99%

Digital Twin-Driven Performance Optimization for Hazardous Waste Landfill Systems

2022

Mathematical Problems in Engineering

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Hazardous waste landfill is the final way to dispose of hazardous waste and its environmental risk is different from that of domestic waste landfill. Its dangerous characteristics will not decrease with time, but will exist for a long. The environmental risks of hazardous waste landfills are concentrated in the probability risk of leakage of the impermeable layer. Therefore, it is of great significance to calculate the environmental risk of the leakage source intensity of typical hazardous waste landfills. In order to adapt to the personalized customer needs caused by social and economic development and to pursue new competitive advantages, the production mode of manufacturing enterprises is gradually changing to a small-batch and multi-variety customized mode. The complex and dynamic production environment caused by determinism puts forward higher requirements for the operation control accuracy of large-scale multiunit production systems. To support the efficient and coordinated operation of each link is a key challenge for process control of large-scale multiunit production logistics systems. This article proposes to accelerate the integration of information technology and manufacturing technology to promote the application of intelligent manufacturing process, intelligent logistics management, and other technologies in the production process. The research object is to study the multiunit linkage optimization problem under the framework of digital twin technology, through the real-time collaborative decision-making and feedback execution of the production, transportation, and warehousing multi-decision links to solve the “production-transportation-storage” decision-making in a dynamic environment. We analyzed the problems brought about by the dynamic interference of the execution process on the “production-transportation-storage” linkage operation process of the industrial park and analyzed the challenges of realizing the online linkage decision-making of “production-transportation-storage.” Based on the classic digital twin framework, a cross-unit digital twin linkage decision information architecture is proposed. Compared with the conclusions of the original environmental impact assessment report of the project, the post-environmental impact assessment results basically conform to the relevant descriptions, and a few nonconformities have been resolved during the project operation. The environmental protection measures of this project are relatively complete, which can meet various environmental protection requirements and enterprise development needs during the operation period of the project. For some environmental risks found in the process of project operation, evasion measures are proposed to reduce the possibility of environmental pollution accidents, and emergency measures can be taken in time when accidents occur. The practice of post-assessment of the environmental impact of this hazardous waste landfill is generally successful, and it has certain reference significance for the subsequent post-assessment of the environmental impact of other hazardous waste landfills.

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Section: Related Workmentioning

confidence: 99%

Digital Twin-Driven Performance Optimization for Hazardous Waste Landfill Systems

2022

Mathematical Problems in Engineering

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“…[ 29 ] Advanced instrumental characterization (such as XPS, X‐ray absorption near edge structure (XANES), and extended X‐Ray absorption fine structure (EXAFS)) is used to study the adsorption mechanism. [ 126 ] The XPS spectrum of Cr 2p of nZVI‐Alk‐Ti 3 C 2 after Cr(VI) adsorption shows that there are Cr(VI) peaks at 578.8 and 588.6eV and Cr(III) peaks at 576.8 and 586.7 eV, respectively. [ 127 ] The negatively charged Cr(VI) ions (HCrO 4 − ) is adsorbed on the Ti 3 C 2 surface by the oppositely charged H + or Fe n + .…”

Section: The Adsorption Mass Transfer Mechanismmentioning

confidence: 99%

Titanium Carbide‐Based Adsorbents for Removal of Heavy Metal Ions and Radionuclides: From Nanomaterials to 3D Architectures

Dong

Bhattacharjee

Zhang

et al. 2021

Adv Materials Inter

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Heavy metal ions (HMIs) and radionuclides pose serious threats to food safety, human health, and marine ecosystems. Titanium carbides are advantageous owing to their good hydrophilicity, controllable surface charge, specific active groups, and high radiation stability, which make them effective candidates for removing toxic HMIs and radionuclides from wastewater. Recently, a lot of research is conducted to discover new methods for preparing functional titanium carbide composite materials to enhance the adsorption performance and overcome the shortcomings of conventional nanomaterials. Since 2011, the titanium carbide‐based adsorbents have undergone a developmental process from a single 2D nanosheet to a wide range of composite materials and 3D architectures. In this review, the development and progress in the design and synthesis methods of various titanium carbide‐based adsorbents are summarized. These methods are practical, scalable, and controllable in terms of structure and surface chemistry. The application of these surface‐modified composite materials in the adsorption of HMIs and radionuclides is also discussed, and the adsorption mass transfer mechanism of the adsorbates on titanium carbide‐based adsorbents is analyzed. Finally, the challenges and prospects of titanium carbide composite materials for future applications in the domain of metal ion adsorption are discussed.

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“…Manganese is easily oxidized to manganese dioxide [19]. Manganese dioxide is an excellent adsorbent material due to its large specific surface area and strong electrochemical properties [20]. Manganese is located in the fourth period of the chemical periodic table in Group VIIB.…”

Section: Introductionmentioning

confidence: 99%

Extended Line Defect Graphene Modified by the Adsorption of Mn Atoms and Its Properties of Adsorbing CH4

Zhang¹,

Yang²,

Zhang³

et al. 2022

Nanomaterials

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Extended line defect (ELD) graphene is a two-dimensional (2D) topologically defective graphene with alternate octagonal and quadrilateral carbon rings as basic defective units. This paper reports on the CH4 adsorption properties of ELD graphene according to the first principles of density functional theory (DFT). The effects on the CH4 adsorption of ELD graphene when modified by a single Mn atom or two Mn atoms were investigated, respectively. An ELD-42C graphene configuration consisting of 42 C atoms was first constructed. Then, the ELD-42C graphene configuration was used as a substrate, and a Mn-ELD-42C graphene configuration was obtained by modifying it with a single Mn atom. The results showed that the most stable adsorption site for Mn atoms was above the quadrilateral carbon ring. This Mn-ELD-42C graphene configuration could only stably adsorb up to 30 CH4 molecules on each side, with an average adsorption energy of −0.867 eV/CH4 and an adsorption capacity of 46.25 wt%. Three 2Mn-ELD-42C graphene configurations were then obtained by modifying the ELD-42C graphene substrate with two Mn atoms. When the two Mn atoms were located on either side of a 2Mn-ELD-42C graphene configuration and above the two octagonal carbon rings adjacent to the same quadrilateral carbon ring, it was able to adsorb up to 40 CH4 molecules on each side, with an average adsorption energy of −0.862 eV/CH4 and a CH4 adsorption capacity of 51.09 wt%.

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Removal of Radionuclides from Aqueous Solution by Manganese Dioxide-Based Nanomaterials and Mechanism Research: A Review

Cited by 59 publications

References 111 publications

Digital Twin-Driven Performance Optimization for Hazardous Waste Landfill Systems

Digital Twin-Driven Performance Optimization for Hazardous Waste Landfill Systems

Titanium Carbide‐Based Adsorbents for Removal of Heavy Metal Ions and Radionuclides: From Nanomaterials to 3D Architectures

Extended Line Defect Graphene Modified by the Adsorption of Mn Atoms and Its Properties of Adsorbing CH4

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