南京林业大学学报(自然科学版) ›› 2014, Vol. 57 ›› Issue (06): 130-134.doi: 10.3969/j.issn.1000-2006.2014.06.025

• 研究论文 • 上一篇    下一篇

废轮胎热解炭吸附性能研究

田永静,王增斌,王晓康,刘欣欣,孙海滨,栾大磊   

  1. 苏州科技学院环境科学与工程学院,江苏 苏州 215009
  • 出版日期:2014-12-31 发布日期:2014-12-31
  • 基金资助:
    收稿日期:2013-12-25 修回日期:2014-06-18
    基金项目:江苏省环境科学与工程重点实验室项目(zd111204); 江苏省大学生创新重点科研项目(2012JSSPITP1715)
    第一作者:田永静,副教授。E-mail:tianyongjing@126.com。
    引文格式:田永静,王增斌,王晓康,等. 废轮胎热解炭吸附性能研究[J]. 南京林业大学学报:自然科学版,2014,38(6):130-134.

Study on adsorption capacity of the charcoal obtained by pyrolyzation of waste tire

TIAN Yongjing, WANG Zengbin, WANG Xiaokang, LIU Xinxin, SUN Haibin, LUAN Dalei   

  1. College of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
  • Online:2014-12-31 Published:2014-12-31

摘要: 研究了粒径为40~400 μm废轮胎颗粒在450~800℃条件下,以15~40 ℃/min升温速率经0.5~2 h进行热解获得的热解炭对亚甲基蓝、腐殖酸、苯酚和Cu2+的吸附能力,考察了不同热解条件对其吸附能力的影响,探讨了吸附剂用量、初始浓度、pH、温度、时间对吸附能力的影响。研究结果表明,热解条件对吸附能力的影响排序为温度>时间>粒径>升温速率。400 μm胶粉以40 ℃/min升温速率,在800 ℃条件下热解1.5 h,所获得的热解炭不经活化,其比表面积SBET可达114 m2/g,能有效吸附Cu2+、亚甲基蓝和腐殖酸,但对苯酚的吸附能力较弱,对Cu2+、亚甲基蓝和腐殖酸的适宜吸附条件分别为热解炭投加量分别为1、2 、1.5 g/L,平衡吸附时间分别为2、1、3 h,吸附质初始浓度分别为120、100、6 mg/L,pH分别为4.5~6、1.0、8.0。未经活化的废轮胎热解炭可作为商业活性炭的廉价替代品,其适宜的吸附质为重金属及较大分子类型的有机物。

Abstract: NATPC(non-activated tire-based pyrolytic char), the solid products from waste tire pyrolysis without subsequent activation procedure, was used as an adsorbent in this paper to determine its potential ability. NATPCs were obtained from shredded tires(40-400 μm)in 450-800 ℃ at 15-40 ℃/min for 0.5-2 h. Methylene blue, humic acid, phenol and Cu2+ were chosen as adsorbates to evaluate the adsorption capacities of NATPCs. Results showed that the pyrolysis condition had a great influence on the adsorption capacity of NATPCs, of which temperature was the greatest, heating time was greater, particle size was lesser and heating rate is the least. The adsorption performance onto NATPC prepared with 400 μm tire powders in 800℃ at 40℃/min for 1.5 h was conducted under different contact time, adsorbent dosage, initial concentration, pH and temperature. Although the SBET of NATPC was about 114 m2/g, but NATPC could uptake Cu2+, methylene blue and humic acid well. For Cu2+, methylene blue and humic acid, the maximum adsorption with NATPC dosage were 1 g/L, 2 g/L, and 1.5 g/L, respectively; the contact time were 2 h, 1 h, and 3 h; the initial absorbance concentration were 120 mg/L, 100 mg/L, and 6 mg/L, pH were 4.5-6, 1.0 and 8.0. It indicated NATPC could be used as an excellent adsorbent with good efficiency, simple manufacture and low cost. The appropriate adsorbates for NATPC adsorption were heavy metal and macromolecules.

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