钢渣基多孔地质聚合物的制备及吸附性能研究

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (2): 562-571.

钢渣基多孔地质聚合物的制备及吸附性能研究

桑明明¹, 赵恒泽¹, 吴培益², 冯静霞¹, 朱令起¹, 李晔¹

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

收稿日期:2021-11-12 修回日期:2021-12-22 出版日期:2022-02-15 发布日期:2022-03-01
通讯作者: 赵恒泽,博士,讲师。E-mail:zhaohengze@ncst.edu.cn
作者简介:桑明明(1998—),女,硕士研究生。主要从事新型固废材料方面的研究。E-mail:3166243659@qq.com
基金资助:
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)

Preparation and Adsorption Properties of Steel Slag Based Porous Geopolymer

SANG Mingming¹, ZHAO Hengze¹, WU Peiyi², FENG Jingxia¹, ZHU Lingqi¹, LI Ye¹

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

Received:2021-11-12 Revised:2021-12-22 Online:2022-02-15 Published:2022-03-01

摘要/Abstract

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。

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

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.

Key words: steel slag, geopolymer, porous adsorption material, microstructure, pore structure, adsorption property, calcium silicon ratio, activator

中图分类号:

X705

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.

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.

参考文献

[1] DAVIDOVITS J. Geopolymer chemistry & application[M]. Saint-Quentin, France: Institute geopolymer, 2008.
[2] ZHANG Z H, PROVIS J L, REID A, et al. Mechanical, thermal insulation, thermal resistance and acoustic absorption properties of geopolymer foam concrete[J]. Cement and Concrete Composites, 2015, 62: 97-105.
[3] UL HAQ E, KUNJALUKKAL P S, LICCIULLI A. Microwave synthesis of thermal insulating foams from coal derived bottom ash[J]. Fuel Processing Technology, 2015, 130: 263-267.
[4] 罗新春,汪长安.矿渣基地质聚合物多孔材料的制备与性能[J].硅酸盐学报,2016,44(3):450-456.
LUO X C, WANG C A. Preparation and properties of slag-based gelpolymer porous materials[J]. Journal of the Chinese Ceramic Society, 2016, 44(3): 450-456 (in Chinese).
[5] NOVAIS R M, BURUBERRI L H, SEABRA M P, et al. Novel porous fly-ash containing geopolymer monoliths for lead adsorption from wastewaters[J]. Journal of Hazardous Materials, 2016, 318: 631-640.
[6] 曲阳威,韩凤兰,邢质冰,等.粉煤灰地质聚合物多孔材料的制备及其性能研究[J].新型建筑材料,2020,47(11):144-147.
QU Y W, HAN F L, XING Z B, et al. Preparation and properties of fly ash geopolymer porous materials[J]. New Building Materials, 2020, 47(11): 144-147 (in Chinese).
[7] 宋紫阁.固体废弃物改性地聚物的路用性能研究[D].武汉:武汉工程大学,2018:34-35.
SONG Z G. Study on performance of solid waste modified geopolymer in pavement engineering[D]. Wuhan: Wuhan Institute of Technology, 2018: 34-35 (in Chinese).
[8] 王春雪,刘泽,孔凡龙,等.钢渣-粉煤灰基地质聚合物的制备及性能研究[J].硅酸盐通报,2015,34(12):3430-3435.
WANG C X, LIU Z, KONG F L, et al. Preparation and properties of steel slag and fly ash based geopolymer[J]. Bulletin of the Chinese Ceramic Society, 2015, 34(12): 3430-3435 (in Chinese).
[9] LEE W K W, VAN DEVENTER J S J. The effects of inorganic salt contamination on the strength and durability of geopolymers[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2002, 211(2/3): 115-126.
[10] 刘乐平,谭华,邓家喜,等.矿渣基地质聚合物干粉材料的性能与反应机理[J].武汉理工大学学报,2014,36(6):36-40.
LIU L P, TAN H, DENG J X, et al. Properties and reaction mechism of blast furnace slag based geopolymer dry powder materials[J]. Journal of Wuhan University of Technology, 2014, 36(6): 36-40 (in Chinese).
[11] 苏丽娟,付国胜,李富源,等.煤矸石基发泡地质聚合物的制备及其力学性能[J].硅酸盐通报,2020,39(11):3549-3556.
SU L J, FU G S, LI F Y, et al. Preparation and mechanical properties of coal gangue based foamed geopolymer[J]. Bulletin of the Chinese Ceramic Society, 2020, 39(11): 3549-3556 (in Chinese).
[12] 程海丽,杨飞华,马保国,等.高铝煤矸石复合活化及其火山灰效应分析[J].建筑材料学报,2016,19(2):248-254.
CHENG H L, YANG F H, MA B G, et al. Composite activation of high alumina coal gangue and analysis on its pozzolanic effect[J]. Journal of Building Materials, 2016, 19(2): 248-254 (in Chinese).
[13] 杨昊.粉煤灰-偏高岭土基地聚物超轻多孔材料的制备与性能[D].合肥:合肥工业大学,2019:43-44.
YANG H. Preparation and properties of ultra-light porous material based on fly ash-metakaolin blends[D]. Hefei: Hefei University of Technology, 2019: 43-44 (in Chinese).
[14] SIYAL A A, SHAMSUDDIN M R, KHAN M I, et al. A review on geopolymers as emerging materials for the adsorption of heavy metals and dyes[J]. Journal of Environmental Management, 2018, 224: 327-339.
[15] GUAN H Y, LEBLANC R J, XIE S Y, et al. Recent progress in the syntheses of mesoporous metal-organic framework materials[J]. Coordination Chemistry Reviews, 2018, 369: 76-90.
[16] 王晨希,吴文瞳,郑蕾,等.地质聚合物应用于环境治理领域的研究进展[J].现代化工,2021,41(3):63-67.
WANG C X, WU W T, ZHENG L, et al. Research progress on application of geopolymers in environmental treatment[J]. Modern Chemical Industry, 2021, 41(3): 63-67 (in Chinese).