Pb~(2+)在粉煤灰基方钠石上的吸附特性 |
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引用本文: | 罗洁,黄胜,王亚举. Pb~(2+)在粉煤灰基方钠石上的吸附特性[J]. 工业水处理, 2016, 0(7): 63-67 |
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作者姓名: | 罗洁 黄胜 王亚举 |
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作者单位: | 1. 西南科技大学环境工程自控技术四川省高校重点实验室,四川绵阳621010; 西南科技大学固体废物处理与资源化教育部重点实验室,四川绵阳621010;2. 西南科技大学环境工程自控技术四川省高校重点实验室,四川绵阳,621010 |
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基金项目: | 西南科技大学研究生创新基金资助(15ycx041) |
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摘 要: | 以电厂粉煤灰为原料,在传统碱熔-水热法中引入脱硅工艺制备粉煤灰基方钠石,运用XRD和SEM对其进行物相和形貌表征,并通过研究不同因素条件下Pb~(2+)的吸附行为来考察Pb~(2+)在粉煤灰基方钠石上的吸附特性。结果表明:在碱度4.5 mol/L、晶化时间12 h、晶化温度100℃条件下能够合成出较高纯度的粉煤灰基方钠石;合成的方钠石相比原状粉煤灰吸附能力显著提高,对Pb~(2+)具有显著的去除效果,可作为重金属处置的高效吸附剂。
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关 键 词: | 粉煤灰 方钠石 Pb2%2B 吸附 |
Adsorption capacity of coaI fIy ash-based sodaIite for Pb 2+ |
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Abstract: | Using coal fly ash as raw materials,the coal fly ash-based sodalite has been prepared by introducing desi-lication process to traditional alkali fusion-hydrothermal method. Its phase and morphology are characterized by X ray diffraction and scanning electron microscope. In addition ,the adsorption characteristics of coal fly ash-based sodalite for Pb2+are investigated through studying the adsorption behavior of Pb2+under conditions of different factors. The results show that the coal fly ash-based sodalite with high purity and high crystalline phase can be synthesized under the following conditions: its basicity is 4.5 mol/L,crystallization time 12 h,and crystallization temperature 100℃. Compared with the coal fly ash in original state,the adsorption capacity of synthesized sodalite is obviously improved,and has remarkable removing effect on Pb2+,being able to be used as a kind of efficient adsorbent for trea-ting heavy metals. |
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Keywords: | coal fly ash sodalite lead ion adsorption |
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