| 钢渣基多孔地质聚合物的制备及吸附性能研究 |
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| 引用本文： | 桑明明,赵恒泽,吴培益,冯静霞,朱令起,李晔.钢渣基多孔地质聚合物的制备及吸附性能研究[J].硅酸盐通报,2022,41(2):562-571. |
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| 作者姓名： | 桑明明 赵恒泽 吴培益 冯静霞 朱令起 李晔 |
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| 作者单位： | 1.华北理工大学矿业工程学院,唐山 063200;2.唐山开滦林西矿业有限公司,唐山 063014 |
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| 基金项目： | 河北省自然科学基金青年基金(E2020209038)；;国家自然科学基金青年基金(51802097)； |
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| 摘 要： | 以钢渣为主要原料,水玻璃为激发剂,H2O2为发泡剂,制备多孔地质聚合物材料。采用XRD、FTIR、SEM、BET等对原料及最终试样进行表征,研究钙硅比、激发剂和H2O2掺量对该材料性能的影响。将所制备的多孔地质聚合物用作吸附剂,初步考察该材料对Cu2+的吸附效果。试验表明:当钙硅比为1.0,水玻璃掺量为20.4%(质量分数),发泡剂掺量为4%(质量分数)时,该材料性能良好,总孔隙率86.4%,抗压强度0.5 MPa,体积密度0.408 g/cm3,体积吸水率56.31%,钢渣使用率65.85%,比表面积与孔容显著提高。吸附结果显示:该材料对Cu2+吸附效果良好,去除率可达91.44%,平衡吸附量达到15.239 mg/g,吸附过程符合准二级动力学模型。
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| 关 键 词： | 钢渣 地质聚合物 多孔吸附材料 微观结构 孔结构 吸附性能 钙硅比 激发剂 |
| 收稿时间： | 2021-11-12 |
Preparation and Adsorption Properties of Steel Slag Based Porous Geopolymer |
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| SANG Mingming,ZHAO Hengze,WU Peiyi,FENG Jingxia,ZHU Lingqi,LI Ye.Preparation and Adsorption Properties of Steel Slag Based Porous Geopolymer[J].Bulletin of the Chinese Ceramic Society,2022,41(2):562-571. |
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| Authors: | SANG Mingming ZHAO Hengze WU Peiyi FENG Jingxia ZHU Lingqi LI Ye |
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| Affiliation: | 1. School of Mining Engineering, North China University of Science and technology, Tangshan 063200, China;2. Tangshan Kailuan Linxi Mining Co., Ltd., Tangshan 063014, China |
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| Abstract: | Porous geopolymer materials were prepared with steel slag as the main raw material,water glass as the activator and H2O2 as the foaming agent.The raw materials and final samples were characterized by XRD,FTIR,SEM and BET.The effects of calcium silicon ratio,activator and H2O2 admixture on the properties of the material were studied.The porous geopolymer was used as adsorbent to investigate the adsorption effect of Cu2+.It shows that when the calcium-silicon ratio is 1.0,water glass mixing is 20.4%(mass fraction)and foaming agent mixing is 4%(mass fraction),the material performs well,with 86.4%total porosity,0.5 MPa compressive strength,0.408 g/cm3 volume density,volume water absorption rate is 56.31%,and steel slag utilization rate is 65.85%,significantly improving the specific surface area and pore capacity.The adsorption results show that the material has a good adsorption effect on Cu2+,the removal rate reaches 91.44%,and the equilibrium adsorption amount reaches 15.239 mg/g.The adsorption process conforms to the pseudo-second order. |
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| Keywords: | steel slag geopolymer porous adsorption material microstructure pore structure adsorption property calcium silicon ratio activator |
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