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2005•Journal of China University of Mining and TechnologyRequires access

Research on SEM/TEM and XRD of Germ Oxidizing Pyrite Surface in Coal

Dongchen Zhang

Open publisher page 4 citations

Abstract

Based on modern surface analysis test technology such as XRD and SEM/TEM,the microscopic structural changes of pyrite surface were studied by Thiobacillus ferrooxidans oxidation.As contrast,at the same time,an oxidize experiment was carried out by adopting oxidizer(H_2O_2).The results show that oxidization form of Thiobacillus ferrooxidans in pyrite surface differs from that of oxidizer(H_2O_2).The surface microscopic structure of pyrite oxidized by oxidizer appears as protuberant button form,which results from strongly direct oxidization.But the surface microscopic structure of pyrite oxidized by Thiobacillus ferrooxidans appears as hollow lose,which results from mitigative adsorption oxidation.This results provide a basis for revealing the role mechanism of germ on pyrite surface in coal.

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What this paper is about

Based on modern surface analysis test technology such as XRD and SEM/TEM,the microscopic structural changes of pyrite surface were studied by Thiobacillus ferrooxidans oxidation.As contrast,at the same time,an oxidize experiment was carried out by adopting oxidizer(H_2O_2).The results show that oxidization form of Thiobacillus ferrooxidans in pyrite surface differs from that of oxidizer(H_2O_2).The surface microscopic structure of pyrite oxidized by oxidizer appears as protuberant button form,which results from strongly direct oxidization.But the surface microscopic structure of pyrite oxidized by Thiobacillus ferrooxidans appears as hollow lose,which results from mitigative adsorption oxidation.This results provide a basis for revealing the role mechanism of germ on pyrite surface in coal.

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Available abstract

Based on modern surface analysis test technology such as XRD and SEM/TEM,the microscopic structural changes of pyrite surface were studied by Thiobacillus ferrooxidans oxidation.As contrast,at the same time,an oxidize experiment was carried out by adopting oxidizer(H_2O_2).The results show that oxidization form of Thiobacillus ferrooxidans in pyrite surface differs from that of oxidizer(H_2O_2).The surface microscopic structure of pyrite oxidized by oxidizer appears as protuberant button form,which results from strongly direct oxidization.But the surface microscopic structure of pyrite oxidized by Thiobacillus ferrooxidans appears as hollow lose,which results from mitigative adsorption oxidation.This results provide a basis for revealing the role mechanism of germ on pyrite surface in coal.

Key concepts: Pyrite, Oxidizing agent, Thiobacillus ferrooxidans, Adsorption, Chemistry, Chemical engineering, Metallurgy, Coal

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