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Waste Disposal & Sustainable Energy
Waste Disposal & Sustainable Energy
    
杨桃叶片低温电弧等离子体热解气化研究
Xiaowei Cai1, Xiange Wei1, Jiao Wu1, Jiamin Ding2, Changming Du1,2
1 School of Environmental Science and Engineering, Sun YatSen University, Guangzhou, Guangdong, China 2 Taizhou Institute of Zhejiang University, Taizhou, Zhejiang, China
Plasma pyrolysis and gasification of carambola leaves using non-thermal arc plasma
Xiaowei Cai1, Xiange Wei1, Jiao Wu1, Jiamin Ding2, Changming Du1,2
1 School of Environmental Science and Engineering, Sun YatSen University, Guangzhou, Guangdong, China 2 Taizhou Institute of Zhejiang University, Taizhou, Zhejiang, China
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摘要： 土壤污染（重金属和有机质）越来越严重，植物修复已迅速成为解决这一问题的重要手段。因此，重金属超积累植物的处理和处置一直是人们关注的话题。鉴于杨桃是一种潜在的超积累植物，本文选择杨桃叶为原料。采用非热电弧等离子体装置，对影响气体总产率和金属固定性等6个主要因素开展系列试验，探讨了等离子体处理超蓄积器的可行性，为进一步利用超蓄积器提供了一种新的方法。在加水（水：样品=1:1）、气体流量为3L/min、处理时间为7min、放电功率为29.95w的条件下，最大总产气率达到85%左右。在最佳条件下，采用还原性或惰性载气或添加特定的无机添加剂有利于提高金属固定效率。然而，这些因素的影响通常是有两面性的，有些因素在产气量和金属固位之间可能存在相互矛盾的影响。为了达到预期的目标，有必要对这些因素进行优化。所得固体产物具有固定金属和活性炭的潜力。
关键词： Non-thermal plasma;  Hyperaccumulator;  Carambola leaves;  Pyrolysis;  Gasifcation    
Abstract: Soil pollution (heavy metals and organic matter) is becoming more and more serious, phytoremediation has rapidly become a highly important method to deal with this problem. Therefore, the treatment and disposal of hyperaccumulators have been a topic of concern. In this paper, carambola leaves are selected as feedstock considering that carambola is a potential hyperaccumulator. A series of tests were performed to discuss 6 main influencing factors on total gas yield and metal fixing using a non-thermal arc plasma setup, to investigate the feasibility of plasma treatment of hyperaccumulator and provide a new method to utilize the harvested hyperaccumulator. The maximum total gas yield reached approximately 85% at an airflow rate of 3 L/min, the processing time of 7 min, discharge power of 29.95 W with the addition of water (water: sample=1:1). A reducing or inert carrier gas or the addition of some specific inorganic additives at optimal conditions were in favor of increasing metal fixing efficiency. However, the effects of these factors usually have two sides, and some factors may have conflicting effects between gas yield and metal fixing, and. It is necessary to optimize these factors for achieving the desired goal. The obtained solid products exhibit the potential to fix metals and act as activated carbon.
Key words: Non-thermal plasma    Hyperaccumulator    Carambola leaves    Pyrolysis    Gasifcation
收稿日期: 2020-03-20
通讯作者: Xiange Wei, Changming Du     E-mail: eeswxg@mail.sysu.edu.cn, duchm@mail.sysu.edu.cn
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引用本文:

Xiaowei Cai, Xiange Wei, Jiao Wu, Jiamin Ding, Changming Du. Plasma pyrolysis and gasification of carambola leaves using non-thermal arc plasma. Waste Disposal & Sustainable Energy, 10.1007/s42768-020-00046-9.

链接本文:

http://www.zjujournals.com/wdse/CN/10.1007/s42768-020-00046-9    或    http://www.zjujournals.com/wdse/CN/Y2020/V2/I3/193

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