Inorganic Chemicals Industry >
Study on combustion characteristics of waste pharmaceutical Na2SO4 and impurity removal by low-temperature carbonization
Received date: 2020-12-07
Online published: 2021-09-08
A two-step process of low temperature carbonization and high temperature activation was used to treat typical medical waste salt,and inorganic salt and activated carbon materials were recovered successfully.The organic matter in the waste salt was converted into insoluble residual carbon slag in low temperature carbonization section,which could be separated from inorganic salts by simple dissolution and filtration.Activated carbon material could be obtained by activating residual carbon residue as carbon precursor.The components of waste salt were analyzed by atomic fluorescence spectrometry and gas chroma-tography mass spectrometry.The activation energy of waste salt incineration was calculated by Friedman method and Starink method.The carbonization conditions of waste salt at low temperature were optimized by pipe furnace simulation test.The carbon residues were KOH impregnation method to prepare activated carbon.The results showed that the removal rate of dissolved organic carbon in the waste salt reached 99.98% under the conditions of air atmosphere,350 ℃ and 60 min,and the obtained inorganic salt products met the requirements of GB/T 6009—2014“Industrial anhydrate Sodium Sulfate” class Ⅲ.The adsorption capacity of activated carbon for methylene blue reached 762.86 mg/g.
Wenzhen Yang , Ping Xiong , Xiuyun Sun , Weiqing Han . Study on combustion characteristics of waste pharmaceutical Na2SO4 and impurity removal by low-temperature carbonization[J]. Inorganic Chemicals Industry, 2021 , 53(9) : 76 -82 . DOI: 10.19964/j.issn.1006-4990.2020-0604
[1] | 周海云, 鲍业闯, 包健, 等. 工业废盐处理处置现状研究进展[J]. 环境科技, 2020, 33(2):70-75. |
[2] | 丁志广, 郭键柄, 卢超. 化工废盐无害化处理的实验研究[J]. 无机盐工业, 2020, 52(2):58-61. |
[3] | 姜海超, 申银山, 陈晓飞, 等. 含氰工业废盐中杂质的高温氧化脱除实验研究[J]. 无机盐工业, 2020, 52(2):62-64. |
[4] | 王利超, 王志良, 马堂文, 等. 模拟氯化钠盐渣的高温处理[J]. 化工环保, 2014, 34(5):419-422. |
[5] | Cao M, Liu L, Yu Z, et al. Studies on the corrosion behavior of Fe-20Cr alloy in NaCl solution spray at 600 ℃[J]. Corrosion Science, 2018, 133:165-177. |
[6] | 李强, 戴世金, 郑怡琳, 等. 工业废盐中有机物脱除和资源化技术进展[J]. 环境工程, 2019, 37(12):200-206. |
[7] | 李春雨, 蒋旭光, 安春国, 等. 农药生产废渣燃烧/热解特性研究[J]. 中国电机工程学报, 2009, 29(23):45-50. |
[8] | 董俊佳, 刘志英, 王雷, 等. 医药类废盐渣的燃烧/热解特性及动力学研究[J]. 环境污染与防治, 2019, 41(9):1070-1075. |
[9] | 廖辉伟, 姜珊, 贾金, 等. 农药含钾废渣的热解动力学[J]. 环境化学, 2012, 31(4):478-482. |
[10] | Vyazovkin S, Burnham A K, Criado J M, et al. ICTAC Kinetics Co-mmittee recommendations for performing kinetic computations on thermal analysis data[J]. Thermochimica Acta, 2011, 520(1/2):1-19. |
[11] | Wang X, Ren Q, Li L, et al. TG-MS analysis of nitrogen transformation during combustion of biomass with municipal sewage sludge[J]. Journal of Thermal Analysis and Calorimetry, 2016, 123(3):2061-2068. |
[12] | 苏梦, 祝建中, 朱晓强, 等. 二氰蒽醌农药废盐热处理特性[J]. 科学技术与工程, 2019, 19(24):423-429. |
[13] | Yousaf B, Liu G, Abbas Q, et al. Systematic investigation on com-bustion characteristics and emission-reduction mechanism of potentially toxic elements in biomass- and biochar-coal co-combustion systems[J]. Applied Energy, 2017, 208:142-157. |
[14] | Huang L, Xie C, Liu J, et al. Influence of catalysts on co-combus-tion of sewage sludge and water hyacinth blends as determined by TG-MS analysis[J]. Bioresource Technology, 2018, 247:217-225. |
[15] | Huang J, Liu J, Chen J, et al. Combustion behaviors of spent mush-room substrate using TG-MS and TG-FTIR:Thermal conversion,kinetic,thermodynamic and emission analyses[J]. Bioresource Technology, 2018, 266:389-397. |
[16] | 李唯实, 黄泽春, 雷国元, 等. 典型农药废盐热处理过程动力学特征[J]. 中国环境科学, 2018, 38(7):2691-2698. |
[17] | 张进, 何鑫, 姚思童, 等. 漫反射傅里叶变换红外光谱法定量分析食盐中的硫酸根[J]. 中国调味品, 2015, 40(12):127-131. |
[18] | 黄欣, 陈业钢, 苏楠楠, 等. 高盐废水分质结晶及资源化利用研究进展[J]. 化学工业与工程, 2019, 36(1):10-23. |
[19] | 范庆玲, 郭小甫, 袁俊生. 垃圾焚烧飞灰水洗液纯化及无机盐分离[J]. 无机盐工业, 2019, 51(3):67-71. |
[20] | Otowa T, Nojima Y, Miyazaji T. Development of KOH activated high surface area carbon and its application to drinking water purification[J]. Carbon, 1997, 35(9):1315-1319. |
[21] | 李建生, 高长青, 王雪, 等. 高性能活性炭开发生产中的无机活化剂[J]. 无机盐工业, 2019, 51(8):1-6. |
[22] | Wang J, Lei S, Liang L. Preparation of porous activated carbon from semi-coke by high temperature activation with KOH for the high-efficiency adsorption of aqueous tetracycline[J]. Applied Surface Science, 2020, 530.DOI: 10.1016/j.apsusc.2020.147187. |
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