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Ambient nanoparticles/nanominerals and hazardous elements from coal combustion activity:Implications on energy challenges and health hazards

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Geoscience Frontiers 2018年第3期9卷 863-875页

作者： Binoy K.Saikia Jyotilima Saikia Shahadev Rabha Luis F.O.Silva Robert Finkelman Polymer Petroleum and Coal Chemistry Group Materials Science and Technology DivisionCSIR-North East Institute of Science and TechnologyJorhat785006AssamIndia Academy of Scientific and Innovative Research CSIR-NEIST CampusJorhat785006India Research group in Environmental Management and Sustainability Department of Civil and Environmental EngineeringUniversidad de la CostaBarranquillaColombia University of Texas at Dallas RichardsonTXUSA

Coal is the most abundant fossil fuel in the world. Because of the growth of coal mining, coal-fired power plants and coal-burning industries, the increase of the emission of particulates(coarse, fine or ultrafine)is of great concern. There is a relationship between increasing human morbidity and mortality and progressive environmental air pollution caused by these types of particles. Thus, the knowledge of the physico-chemical composition and ambient concentrations of coal-derived nanoparticles will improve pollution control strategy. Given the current importance of this area of research, the advanced characterization of this coal combustion-derived nanoparticles/nanominerals as well as hazardous elements is likely to be one of the hottest research fields in coming days. In this review, we try to compile the existing knowledge on coal-derived nanoparticles/nanominerals and discuss the advanced level of characterization techniques for future research. This review also provides some of aspects of health risks associated with exposure to ambient nanoparticles. In addition, the presence of some of the hazardous elements in coal and coal combustion activities is also reviewed.

关键词： Coal combustion Nanoparticles nanominerals Hazardous elements Human health Coal energy challenge

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Nanozyme-mediated elemental biogeochemical cycling and environmental effects

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Science China Earth Sciences 2021年第7期64卷 1015-1025页

作者： Zhi-Lai CHI Guang-Hui YU Institute of Surface-Earth System Science School of Earth System ScienceTianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai RimBohai Coastal Critical Zone National Observation and Research StationTianjin UniversityTianjin 300072China College of Resources&Environmental Sciences Nanjing Agricultural UniversityNanjing 210095China

In Earth systems,thousands of terragrams(Tg)(1 Tg=10^(12) g)of mineral nanoparticles move around *** mineral nanoparticles have exhibited unexpected intrinsic enzyme-like characteristics(so called“mineral nanozymes”),and are ubiquitously distributed in natural ecosystems such as the atmosphere,oceans,waters,and *** with natural enzymes,these mineral nanozymes have several advantages such as tunable catalytic efficiency and robustness to harsh conditions,e.g.,heat,acid,and alkaline *** mineral nanozymes are new products of multidisciplinary cross-cutting,they have been widely applied in various *** review,for the first time,systematically introduces the species and properties of mineral nanozymes in Earth systems,discusses the critical roles played by nanozymes in environmental biogeochemical cycles,compiles the interfacial processes and mechanisms of mineral nanozymes,and provides an overview of the future prospects of mineral nanozymes.

关键词： Nanozymes Peroxidase nanominerals Reactive oxygen species Biogeochemical cycles

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Catalytic Property of Nanostructured Titanium Minerals

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地学前缘 2009年第S1期16卷 162-162页

作者： Ponaryadov Alexey Institute of Geology of Komi SC UB RAS

Titanium minerals are of interest because they constitute the most important source of titanium,a strategic metal in modem ***, knowledge on their structure,composition,and properties of nanodisperse structures has been limited. Several studies have shown that synthetic analogs of natural titanium oxides have structural features and physico-chemical properties distinctly different

关键词： nanominerals chemical activity titanium minerals

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