刘道洁^1,,
吴新¹,
李军辉¹,
都艺伟¹,
王开¹
1.东南大学能源与环境学院，能源热转换及其过程测控教育部重点实验室，南京210096
基金项目: 国家重点研发计划资助项目(2016YFB0600602)

Effects of curing condition on the stabilization of heavy metals in geopolymer of secondary aluminum ash - MSWI fly ash

LIU Daojie^1,,
WU Xin¹,
LI Junhui¹,
DU Yiwei¹,
WANG Kai¹
1.Key Laboratory of Energy Thermal Conversion and Control, Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China

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摘要:以添加SiO2粉末后的二次铝灰和垃圾焚烧飞灰为原料，经过碱激发制备地聚物固化体。将制备好的地聚物固化体样品分别放在30、35、40、45和50 ℃，相对湿度为80%的恒温恒湿培养箱内养护，探究不同养护条件对固化体中重金属浸出特性的影响，并考察生活垃圾焚烧飞灰处理前后重金属化学形态、晶体结构和微观形貌的改变。结果表明：重金属Cr的相对浸出率在30～45 ℃下降明显，45～50 ℃内趋于平缓；而Cd和Pb的相对浸出率在30～40 ℃略微上升，40～50 ℃呈下降趋势，并且Pb的相对浸出率在40～45 ℃下降明显；Zn的相对浸出率随着养护温度的升高缓慢下降。重金属Cr、Cd、Zn和Pb的相对浸出率在前10 d内下降较大，10～14 d下降缓慢。当养护温度为50 ℃时，地聚物中重金属Cr、Cd、Zn和Pb的浸出浓度分别降到0.172、0.072、0.218和3.803 mg·L-1,满足《生活垃圾填埋场控制标准》（GB 16889-2008）的浸出要求。
关键词: 垃圾焚烧飞灰/
二次铝灰/
地聚物/
稳定/固化/
重金属/
养护条件

Abstract:The secondary aluminum ash added with silica fume and the municipal solid waste incineration fly ash (MSWI FA) were used as raw materials to prepare solidified geopolymer through the alkali activation process. The samples were placed in a constant temperature and humidity incubator with the humidity of 80% and the temperatures of 30, 35, 40, 45 and 50 °C to investigate effects of different curing conditions on the leaching characteristics of heavy metals. The chemical forms, crystal structures and microscopic features were also analyzed. The results show that the relative leaching rate of heavy metal Cr decreases obviously when the curing temperature rises from 30 to 45 °C and tends to be leveling off within 45 to 50 °C. The relative leaching rates of heavy metal Cd and Pb increase slightly when the curing temperature rises from 30 to 40 °C and then decrease from 40 to 50 °C, the relative leaching rate of heavy metal Pb declines significantly within 40 to 45 °C. The relative leaching rate of heavy metal Zn decreases slowly with the increase of curing temperature. The relative leaching rates of Cr, Cd, Zn and Pb in heavy metals decrease greatly within the first 10 days and descend slowly in 10 to 14 days. When the curing temperature is 50 °C, the leaching concentrations of heavy metals Cr, Cd, Zn and Pb in geopolymer decrease to 0.172, 0.072, 0.218 and 3.803 mg·L-1 ,respectively, which meets the leaching requirements of Standard for Pollution Control on the Landfill Site of Municipal Solid Waste (GB 16889-2008).
Key words:municipal solid waste incineration fly ash/
secondary aluminum dross/
geopolymer/
stabilization/solidification/
heavy metals/
curing condition.

[1]	徐颖，陈玉，冯岳阳．重金属螯合剂处理垃圾焚烧飞灰的稳定化技术[J]．化工学报,2013,64(5):1833-1839
[2]	孙立，吴新，刘道洁，等．基于硅基的垃圾焚烧飞灰中温热处理重金属稳固化实验[J]．化工进展,2017,36(9):3514-3522
[3]	LAN C H K，IPA W M，BARFORD J P，et al．Use of incineration MSW ash: A review[J]．Sustainability,2010,2(7):1943-1968 10.3390/su2071943
[4]	王旭．生活垃圾焚烧飞灰资源化利用研究[D]．杭州：浙江大学,2017
[5]	熊祖鸿，范根育，鲁敏，等．垃圾焚烧飞灰处置技术研究进展[J]．化工进展,2013,32(7):1678-1684
[6]	金漫彤．地聚合物固化生活垃圾焚烧飞灰中重金属的研究[D]．南京：南京理工大学,2011
[7]	黄凤会.废弃物基地质聚合物材料的制备及性能研究[D]. 济南：济南大学,2014
[8]	PANGDAENG S，PHOO-NGEMKHAM T，SATA V，et al．Influence of curing conditions on properties of high calcium fly ash geopolymer containing Portland cement as additive[J]．Materials & Design,2014,53(4):269-274 10.1016/j.matdes.2013.07.018
[9]	DAVIDOVITS J．Properties of geopolymer cements[C]//Geopolymer Institute．Proceedings First International Conference on Alkaline Cements and Concretes，Kiev State Technical University,1994:131-149
[10]	GALIANO Y L，PEREIRAC F，VALE J．Stabilization/solidification of a municipal solid waste incineration residue using fly ash-based geopolymers[J]．Journal of Hazardous Materials,2011,185(1):373-381 10.1016/j.jhazmat.2010.08.127
[11]	金漫彤，邵江平，黄彩菊，等．地聚物对固化焚烧飞灰的研究[J]．浙江工业大学学报,2011,39(3):241-246
[12]	郭学益，李菲，田庆华，等．二次铝灰低温碱性熔炼研究[J]．中南大学学报(自然科学版),2012,43(3):809-814
[13]	蔡艳秀．铝灰的回收利用现状及发展趋势[J]．资源再生,2007(10):27-29
[14]	盖少磊．铝灰废料综合利用制造技术探讨[J]．金属加工(热加工),2013(19):69-70
[15]	YE N，YANG J，LIANG S，et al．Synthesis and strength optimization of one-part geopolymer based on red mud[J]．Construction & Building Materials,2016,111:317-325 10.1016/j.conbuildmat.2016.02.099
[16]	施惠生，陈邦威，郭晓潞．粉煤灰-垃圾焚烧飞灰二元地聚合物的制备研究[J]．粉煤灰综合利用,2010(5):15-19
[17]	刘辉, 孟菁华, 史学峰. 生活垃圾焚烧飞灰重金属稳定化技术综述[J]. 环境科学与管理,2016, 41(5):69-71
[18]	梁龙云. 垃圾焚烧飞灰重金属固化实验研究[D]. 武汉：华中科技大学,2016
[19]	曹玲玲，刘可，曾建荣，等．上海地区生活垃圾焚烧灰渣元素组成及微观特征研究[J]. 核技术,2014,37(6):6-14
[20]	李慧, 罗琳, 卢海威，等. 生活垃圾焚烧飞灰重金属药剂稳定化研究[J]．环境工程学报,2016,10(2):929-934
[21]	白良成．生活垃圾焚烧处理工程技术[M]．北京：中国建筑工业出版社,2009:270
[22]	TESSIER A，CAMPBELLP G C，BISSON M．Sequential extraction procedure for the speciation of particulate trace metals[J]．Analytical Chemistry,1979,51(7):844-851 10.1021/ac50043a017
[23]	彭晖，李树霖，蔡春声，等．偏高岭土基地质聚合物的配合比及养护条件对其力学性能及凝结时间的影响研究[J]．硅酸盐通报,2014,33(11):2809-2817
[24]	MALLOWW A．Fixation of haxardous wastes and related products: US5976244[P]. 1999-11-02
[25]	JAARSVELDJ G S V，DEVENTERJ S J V，SCHWARTZMAN A．The potential use of geopolymeric materials to immobilize toxic metals：Part II．Material and leaching characteristics[J]．Minerals Engineering,1999,12(1):75-91 10.1016/S0892-6875(97)00046-0
[26]	YE N，CHEN Y，YANG J，et al．Co-disposal of MSWI fly ash and Bayer red mud using an one-part geopolymeric system[J].Journal of Hazardous Materials,2016,318:70-78 10.1016/j.jhazmat.2016.06.042

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刊出日期:2018-08-17

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养护条件对二次铝灰-垃圾飞灰基地聚物中重金属稳固化的影响

刘道洁^1,,
吴新¹,
李军辉¹,
都艺伟¹,
王开¹
1.东南大学能源与环境学院，能源热转换及其过程测控教育部重点实验室，南京210096
基金项目: 国家重点研发计划资助项目(2016YFB0600602)
关键词: 垃圾焚烧飞灰/
二次铝灰/
地聚物/
稳定/固化/
重金属/
养护条件
摘要:以添加SiO2粉末后的二次铝灰和垃圾焚烧飞灰为原料，经过碱激发制备地聚物固化体。将制备好的地聚物固化体样品分别放在30、35、40、45和50 ℃，相对湿度为80%的恒温恒湿培养箱内养护，探究不同养护条件对固化体中重金属浸出特性的影响，并考察生活垃圾焚烧飞灰处理前后重金属化学形态、晶体结构和微观形貌的改变。结果表明：重金属Cr的相对浸出率在30～45 ℃下降明显，45～50 ℃内趋于平缓；而Cd和Pb的相对浸出率在30～40 ℃略微上升，40～50 ℃呈下降趋势，并且Pb的相对浸出率在40～45 ℃下降明显；Zn的相对浸出率随着养护温度的升高缓慢下降。重金属Cr、Cd、Zn和Pb的相对浸出率在前10 d内下降较大，10～14 d下降缓慢。当养护温度为50 ℃时，地聚物中重金属Cr、Cd、Zn和Pb的浸出浓度分别降到0.172、0.072、0.218和3.803 mg·L-1,满足《生活垃圾填埋场控制标准》（GB 16889-2008）的浸出要求。

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