工业废弃物焚烧灰渣玻璃固化浸出离子浓度的研究
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摘要
以工业废弃物焚烧产生的灰渣为主要原料,利用ICP和IC等测试手段,研究了不同配合料配比对玻璃在酸碱溶液中的重金属离子和阴离子浸出浓度的影响。实验结果表明:在p H=3和10的酸/碱性溶液中,原料的离子浸出浓度从1.45 mg/L和0.94 mg/L分别可下降到玻璃[D(1)-4]时的0.15 mg/L和0.024 mg/L;含氧化钙高的玻璃其铬离子浸出浓度[D(1)-4时的0.15mg/L]要低于含氧化铁高的玻璃[D(1)-6时的0.19 mg/L],而氯离子浸出浓度则相反(前者为0.075 mg/L,后者为0.042 mg/L)。玻璃的热膨胀系数、抗折强度和维氏硬度分别为78×10-6/℃、96 MPa和504 MPa。
The ion concentrations in the leaching solution from glasses,which were fabricated by using fly ash( FA) and bottom ash( BA) from incinerated industrial solid waste as main raw materials,were measured by ICP and IC. The experimental results showed that the Cr~(3+) concentrations reduced by adding SiO_2 and Al_2O_3. The leached [Cr~(3+)]in D(1)-4 Ca O-rich glass is lower than that in D(1)-6 Fe_2O_3-rich glass. Whereas,the leached [Cl-]in the former is higher than that in the latter. The Cr3+concentration of the leached D(1)-4 glass in acid solution is higher than that in alkali solution. The physical properties of the D(1)-4 glass are better than ordinary window glasses.
The ion concentrations in the leaching solution from glasses,which were fabricated by using fly ash( FA) and bottom ash( BA) from incinerated industrial solid waste as main raw materials,were measured by ICP and IC. The experimental results showed that the Cr~(3+) concentrations reduced by adding SiO_2 and Al_2O_3. The leached [Cr~(3+)]in D(1)-4 Ca O-rich glass is lower than that in D(1)-6 Fe_2O_3-rich glass. Whereas,the leached [Cl-]in the former is higher than that in the latter. The Cr3+concentration of the leached D(1)-4 glass in acid solution is higher than that in alkali solution. The physical properties of the D(1)-4 glass are better than ordinary window glasses.
引文
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[2]张明益,罗文锋,第宝锋,庞凯丽.浅谈危险固体废弃物环境影响评价[J].环境与可持续发展,2017,42(3):87-89.
[3]张旭光.我国危险固体废弃物处理处置现状分析[J].绿色科技,2014(12):190-192.
[4]Xinmei Lia.Applied Energy Symposium and Forum 2016:Low carbon cities&urban energy systems The Status of Municipal Solid Waste Incineration(MSWI)in China and its Clean Development[J].Energy Procedia 2016(104):498-503.
[5]María Margallol.Environmental sustainability assessment of the management of municipal solid waste incineration residues:a review of the current situation[J].Clean Techn Environ Policy,2015.
[6]周建国.城市生活垃圾焚烧飞灰中重金属的固化/稳定化处理[J].环境与市政,2017,21(2):109-113.
[7]Jacques Rémy Minanea.Leaching behaviour of municipal solid waste incineration bottom ash:From granular material to monolithic concrete[J].Procedia Engineering,2017(180):1213-1220.
[8]闵海华,韩正平,刘淑玲.药剂稳定化生活垃圾焚烧厂飞灰固化方法的优化研究[J].环境卫生工程,2017,25(1):27-29.
[9]Vayos G.Karayannis1.Stabilization/Solidification of Hazardous Metals from Solid Wastes into Ceramics[J].Waste Biomass Valor 2017(8):1863-1874.
[10]Jingde Luan.Crystalline phase evolution behavior and physicochemical properties of glass-ceramics from municipal solid waste incineration flyash[J].J Mater Cycles Waste Manag,2017(19):1204-1210.
[11]Wen-Di Fan,Bo Liu,Xun Luo,et al Production of glass-ceramics using Municipal solid waste incineration flyash[J].Rare Met.RARE METALS DOI 10.1007/s12598-017-0976-8 www.editorialmanager.com/rmet,2017.