废利乐包资源化回收铝及制备活性炭研究

马宇辉; 曹军瑞; 姜天翔; 王勋亮; 赵瑾; 谢宝龙

doi:10.12153/j.issn.1674-991X.2019.05.161

废利乐包资源化回收铝及制备活性炭研究

doi: 10.12153/j.issn.1674-991X.2019.05.161

自然资源部天津海水淡化与综合利用研究所,天津 300192

详细信息

作者简介:
马宇辉(1987—),男,工程师,博士,研究方向为多孔炭材料制备及有机固废热解资源化, myhbiomass@163.com

中图分类号: X705
计量
- 文章访问数: 456
- HTML全文浏览量: 141
- PDF下载量: 147
- 被引次数: 0
出版历程
- 收稿日期: 2019-04-28
- 刊出日期: 2019-11-20

Study on aluminum recovery and the preparation of activated carbon from Tetra Pak waste

Institute of Seawater Desalination and Multipurpose Utilization, Ministry of Natural Resources, Tianjin 300192, China

摘要

摘要: 将废利乐包热解并对获得的热解炭和铝箔进行分拣,再以热解炭为原料,K₂CO₃为活化剂制备活性炭。通过热重/差热-傅里叶变换红外光谱(TG/DTA-FTIR)联用对废利乐包的热解特性进行分析,采用自动气体吸附仪测定活性炭的氮气吸附/脱附曲线,采用FTIR对活性炭的表面官能团进行表征,利用TG-FTIR联用研究了活性炭的活化机理。结果表明,废利乐包中的纸和聚乙烯分别在365和490 ℃发生热解,铝箔则在664 ℃时熔化,填充剂CaCO₃在720 ℃发生分解。活性炭的比表面积和总孔体积分别为1 215 m ²/g和0.768 cm ³/g,其表面官能团主要为C=O、C—O—C和脂肪族C—H。热解炭本身含有的CaCO₃在740 ℃分解生成CO₂,CO₂会氧化刻蚀炭基体进行造孔;820 ℃之后熔融的K₂CO₃也会与炭基体反应生成CO并造成炭的损耗,上述2个过程均参与了活性炭的活化造孔。
- 废利乐包 /
- 铝回收 /
- 活性炭 /
- 热解特性 /
- 活化机理
Abstract: Char and aluminum were obtained by pyrolysis of Tetra Pak waste and separated from each other. The activated carbon was prepared from the char as raw materials and K₂CO₃ as activator. The pyrolysis characteristics of Tetra Pak waste was investigated by thermogravimetric/differential thermal analyzer coupled with Fourier transform infrared spectrometer (TG/DTA-FTIR). The N₂-adsorption/desorption curves of activated carbon were determined by automatic gas adsorption instrument and the surface functional groups of activated carbon were characterized by FTIR. TG-FTIR was used to gain insight into the activation mechanism of activated carbon. Experimental results showed that the pyrolysis of paper and polyethylene and the melting of aluminum in Tetra Pak waste occurred at 365, 490 and 664 ℃, respectively. The filler CaCO₃ decomposed at 720 ℃. The specific surface area and total pore volume of activated carbon were 1 215 m ²/g and 0.768 cm ³/g, respectively, and the surface functional groups of activated carbon were mainly C=O、C—O—C and aliphatic C—H. The decomposition of CaCO₃ contained in char at 740 ℃ led to the formation of CO₂, and pores can be created via the in-situ reduction of CO₂ by char; K₂CO₃ began to be melted at 820 ℃, and the molten K₂CO₃ reacted with the carbon matrix to form CO and caused the loss of carbon. Both processes were involved in the formation of pores of activated carbon.
- Tetra Pak waste /
- aluminum recovery /
- activated carbon /
- pyrolysis characteristics /
- activation mechanism

HTML全文

参考文献(18)

[1]	RODRÍGUEZ-GÓMEZ J E, SILVA-REYNOSO Y Q, VARELA-GUERRERO V , et al. Development of a process using waste vegetable oil for separation of aluminum and polyethylene from Tetra Pak[J]. Fuel, 2015,149:90-94.
[2]	BEKHTA P, LYUTYY P, HIZIROGLU S , et al. Properties of composite panels made from Tetra-Pak and polyethylene waste material[J]. Journal of Polymers and the Environment, 2016,24(2):159-165.
[3]	XIE M H, QIAO Q, SUN Q H , et al. Life cycle assessment of composite packaging waste management:a Chinese case study on aseptic packaging[J]. The International Journal of Life Cycle Assessment, 2012,18(3):626-635.
[4]	朱燕玲, 袁丽春, 谭永川 , 等. 金属粉/利乐包电磁屏蔽复合材料的制备及性能研究[J]. 包装工程, 2013,34:42-47. ZHU Y L, YUAN L C, TAN Y C , et al. Preparation and performance of metal particle/Tetra Pak electromagnetic shielding composites[J]. Packaging Engineering, 2013,34:42-47.
[5]	邓蓉 . 对我国废弃利乐无菌包回收利用的探讨[J]. 北京印刷学院学报, 2014,22(6):20-24. DENG R . Discussion on waste recycling Tetra Pak aseptic package status quo[J]. Journal of Beijing Institute of Graphic Communication, 2014,22(6):20-24.
[6]	DING Z, XU X, PHAN T , et al. High adsorption performance for As(Ⅲ) and As(Ⅴ) onto novel aluminum-enriched biochar derived from abandoned Tetra Paks[J]. Chemosphere, 2018,208:800-807.
[7]	AGAMUTHU P, VISVANATHAN C . Extended producers' responsibility schemes for used beverage carton recycling[J]. Waste Management & Research, 2014,32(1):1-3.
[8]	BASKORO L, MUHAMMAD A, YOSHIKAWA K , et al. Energy and resource recovery from Tetra Pak waste using hydrothermal treatment[J]. Applied Energy, 2017,207:107-113.
[9]	孙晓 . 废旧利乐包/木屑碎料板制备及界面结合性研究[D]. 北京:北京林业大学, 2015.
[10]	范芳娟, 杨中平, 石复习 . 利乐无菌包的回收及利用探讨[J]. 农机化研究, 2007(9):221-223. FAN F J, YANG Z P, SHI F X . Discussion on recovery and reuse of Tetra Pak package[J]. Journal of Agricultural Mechanization Research, 2007(9):221-223.
[11]	MA Y H . Changing Tetra Pak:from waste to resource[J]. Science Progress, 2018,101(2):161-170.
[12]	KORKMAZ A, YANIK J, BREBU M , et al. Pyrolysis of the Tetra Pak[J]. Waste Management, 2009,29:2836-2841.
[13]	FIGEN A K, TERZI E, YILGÖR N,et al. Thermal degradation characteristic of Tetra Pak panel boards under inert atmosphere[J]. Korean Journal of Chemical Engineering, 2013,30:878-890.
[14]	MA Y, WANG J, ZHANG Y . TG-FTIR study on pyrolysis of waste printing paper[J]. Journal of Thermal Analysis and Calorimetry, 2017,129(2):1225-1232.
[15]	张阳, 胡斌, 陆强 , 等. 纤维素快速热解生成左旋葡聚糖的机理研究进展[J]. 生物质化学工程, 2014,48(3):53-59. doi: 10.3969/j.issn.1673-5854.2014.03.011 ZHANG Y, HU B, LU Q , et al. A review on the formation mechanism of levoglucosan during fast pyrolysis of cellulose[J]. Biomass Chemical Engineering, 2014,48(3):53-59. doi: 10.3969/j.issn.1673-5854.2014.03.011
[16]	马宇辉, 王文华, 张秀芝 , 等. 一次性废竹筷制备活性炭及热解过程分析[J]. 环境工程学报, 2017,11(9):5207-5212. MA Y H, WANG W H, ZHANG X Z , et al. Preparation of activated carbon from waste disposable bamboo chopsticks and analysis of pyrolysis process[J]. Chinese Journal of Environmental Engineering, 2017,11(9):5207-5212.
[17]	JIANG L, HU S, XU K , et al. Formation,fates and roles of catalytic precursors generated from the K₂CO₃-carbon interactions in the K₂CO₃-catalyzed CO₂ gasification of coal char[J]. Journal of Analytical and Applied Pyrolysis, 2017,124:384-392.
[18]	KOPYSCINSKI J, RAHMAN M, GUPTA R , et al. K₂CO₃ catalyzed CO₂ gasification of ash-free coal interactions of the catalyst with carbon in N₂ and CO₂ atmosphere[J]. Fuel, 2014,117:1181-1189.