| 不同反应条件对铜蓝晶体生长的影响 |
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| 引用本文： | 张玉珠,彭书传,陈天虎,刘海波,陈冬,马文婕.不同反应条件对铜蓝晶体生长的影响[J].岩石矿物学杂志,2020,39(1):113-119. |
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| 作者姓名： | 张玉珠 彭书传 陈天虎 刘海波 陈冬 马文婕 |
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| 作者单位： | 纳米矿物与污染控制安徽普通高校重点实验室(合肥工业大学), 合肥工业大学 资源与环境工程学院, 安徽 合肥 230009,纳米矿物与污染控制安徽普通高校重点实验室(合肥工业大学), 合肥工业大学 资源与环境工程学院, 安徽 合肥 230009,纳米矿物与污染控制安徽普通高校重点实验室(合肥工业大学), 合肥工业大学 资源与环境工程学院, 安徽 合肥 230009,纳米矿物与污染控制安徽普通高校重点实验室(合肥工业大学), 合肥工业大学 资源与环境工程学院, 安徽 合肥 230009,纳米矿物与污染控制安徽普通高校重点实验室(合肥工业大学), 合肥工业大学 资源与环境工程学院, 安徽 合肥 230009,纳米矿物与污染控制安徽普通高校重点实验室(合肥工业大学), 合肥工业大学 资源与环境工程学院, 安徽 合肥 230009 |
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| 基金项目： | 国家自然科学基金资助项目（41772035） |
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| 摘 要： | 在环境温度下,水中Cu^2+与铁硫化物矿物交换反应形成的铜蓝的结晶度可以影响Cu^2+的回收效率及交换反应的完全程度。本文利用Cu Cl2和Na2S直接反应生成铜蓝,讨论了不同p H值、反应时间、反应温度、反应物浓度、反应物滴加速度、外加电解质浓度等条件对铜蓝晶体生长的影响,并采用XRD、TEM和EDX方法对铜蓝结晶度和形貌进行了表征,用Scherrer公式计算了晶体的平均粒径。结果表明,反应p H值越低,时间越长,温度越高,反应物滴加速度越慢,越有利于铜蓝晶体生长;铜蓝晶体结晶度随着反应物浓度的增加呈先增后减的趋势,而在不同外加电解质浓度条件下表现出不同的结晶度。
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| 关 键 词： | 铜蓝 晶体生长 废水处理 重金属 |
| 收稿时间： | 2019/7/25 0:00:00 |
| 修稿时间： | 2019/10/28 0:00:00 |
The effects of different reaction conditions on the crystallinity growth of covellite |
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| ZHANG Yu-zhu,PENG Shu-chuan,CHEN Tian-hu,LIU Hai-bo,CHEN Dong and MA Wen-jie.The effects of different reaction conditions on the crystallinity growth of covellite[J].Acta Petrologica Et Mineralogica,2020,39(1):113-119. |
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| Authors: | ZHANG Yu-zhu PENG Shu-chuan CHEN Tian-hu LIU Hai-bo CHEN Dong and MA Wen-jie |
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| Institution: | Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, School of Resource and Environmental Engineering, Hefei University of Technology, Hefei 230009, China,Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, School of Resource and Environmental Engineering, Hefei University of Technology, Hefei 230009, China,Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, School of Resource and Environmental Engineering, Hefei University of Technology, Hefei 230009, China,Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, School of Resource and Environmental Engineering, Hefei University of Technology, Hefei 230009, China,Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, School of Resource and Environmental Engineering, Hefei University of Technology, Hefei 230009, China and Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, School of Resource and Environmental Engineering, Hefei University of Technology, Hefei 230009, China |
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| Abstract: | The crystallinity of covellite formed by the exchange reaction of Cu2+ and iron-sulfide minerals in water at ambient temperature affects the recovery efficiency of Cu2+ and the complete degree of the exchange reaction. In this study, covellite was synthesized via direct reaction of CuCl2 and Na2S. The growth of covellite crystal under different conditions, including different pH values, reaction time, reaction temperatures, reactant concentrations, reactant dropping rate, and extra-added electrolyte concentrations, were discussed. The crystallinity and morphology of covellite were characterized by XRD, TEM and EDX. The average particle size of the crystal was calculated by Scherrer formula. The results showed that the lower pH values, longer reaction time, higher reaction temperature and lower reactant dropping rate had favorable effects on the growth of covellite crystals. The crystallinity of covellite increased first and then decreased with the increasing of reactant concentration, and varied with the different concentrations of extra-added ions. |
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| Keywords: | covellite crystal growth wastewater treatment heavy metals |
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