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Thermogravimetric and kinetic analysis of thermal decomposition characteristics of microbial calcites induced by cyanobacteria Synechocystis sp PCC6803
Han, Zuozhen1,2; Zhuang, Dingxiang1,2,3; Yan, Huaxiao1,3; Zhao, Hui1,3; Sun, Bin1,3; Li, Dan1,3; Sun, Yanwei3; Hu, Wenya3; Xuan, Qize3; Chen, Jiaoan3; Xiu, Yang3
2017-02-01
发表期刊JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
卷号127期号:2页码:1371-1379
文章类型Article
摘要Although various complicated methods have always been made attempts, it is still well difficult to efficiently distinguish between the biogenic and abiogenic minerals in geological area up to now. In present study, the thermal decomposition unique characteristics of microbial calcites (MC), induced by cyanobacteria Synechocystis sp. PCC6803, were compared with those of chemical calcites (CC) prepared by the reaction of sodium carbonate (Na2CO3) with calcium chloride (CaCl2). Two samples were firstly analyzed by scanning electron microscope and X-ray diffraction, and were further investigated thermal decomposition behaviors using a thermogravimetric analyzer at different heating rates of 278.15, 283.15, 293.15, and 303.15 K min(-1) from 323.15 to 1273.15 K, respectively, then kinetic parameters were calculated via Popescu, Kissinger-Akahira-Sunose, and Flynn-Wall-Ozawa methods, and then the kinetics mechanism functions were deduced by Popescu method. The results showed that these two kinds of precipitates were actually both calcite crystals although the surface morphologies were quite different. Whereas thermal decomposition kinetics mechanism function of MC can be described as Avrami-Erofeev equation ([-ln(1 - alpha)](1/3)), while CC corresponded to Contracting sphere (volume) ([1 - (1 - alpha)](1/3)), the results also showed that the average activation energy of MC and CC was 217.9 and 170.5 kJ mol(-1), respectively; that is, MC has higher thermal stability, which should be originated from the inducing effects and the different precipitation conditions provided by Synechocystis sp. PCC6803. These above results provided useful information not only for efficiently distinguishing between the biogenic and abiogenic minerals in geological area, and also for better understanding the microbial mineralization.
关键词Thermal Decomposition Calcium Carbonate Microbial Calcite Tg-dtg-dsc Kinetics Synechocystis Sp Pcc6803
DOI10.1007/s10973-016-6026-1
收录类别SCI
语种英语
WOS记录号WOS:000394142200026
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/136784
专题海洋地质与环境重点实验室
作者单位1.Shandong Univ Sci & Technol, Coll Earth Sci & Engn, Shandong Prov Key Lab Deposit Mineralizat & Sedim, Qingdao 266590, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
3.Shandong Univ Sci & Technol, Dept Bioengn, Coll Chem & Environm Engn, Bioresources Lab, Qingdao 266590, Peoples R China
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Han, Zuozhen,Zhuang, Dingxiang,Yan, Huaxiao,et al. Thermogravimetric and kinetic analysis of thermal decomposition characteristics of microbial calcites induced by cyanobacteria Synechocystis sp PCC6803[J]. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,2017,127(2):1371-1379.
APA Han, Zuozhen.,Zhuang, Dingxiang.,Yan, Huaxiao.,Zhao, Hui.,Sun, Bin.,...&Xiu, Yang.(2017).Thermogravimetric and kinetic analysis of thermal decomposition characteristics of microbial calcites induced by cyanobacteria Synechocystis sp PCC6803.JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,127(2),1371-1379.
MLA Han, Zuozhen,et al."Thermogravimetric and kinetic analysis of thermal decomposition characteristics of microbial calcites induced by cyanobacteria Synechocystis sp PCC6803".JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY 127.2(2017):1371-1379.
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