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天然氧化纤维素的吸附性能

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耿存珍, 夏延致, 王未君, 赵昔慧. 天然氧化纤维素的吸附性能[J]. 环境工程学报, 2015, 9(10): 4632-4636. doi: 10.12030/j.cjee.20151004
引用本文: 耿存珍, 夏延致, 王未君, 赵昔慧. 天然氧化纤维素的吸附性能[J]. 环境工程学报, 2015, 9(10): 4632-4636. doi: 10.12030/j.cjee.20151004
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Geng Cunzhen, Xia Yanzhi, Wang Weijun, Zhao Xihui. Adsorption properties of natural oxidized cellulose in wastewater treatment[J]. Chinese Journal of Environmental Engineering, 2015, 9(10): 4632-4636. doi: 10.12030/j.cjee.20151004
Citation: Geng Cunzhen, Xia Yanzhi, Wang Weijun, Zhao Xihui. Adsorption properties of natural oxidized cellulose in wastewater treatment[J]. Chinese Journal of Environmental Engineering, 2015, 9(10): 4632-4636. doi: 10.12030/j.cjee.20151004
shu

天然氧化纤维素的吸附性能

  • 1.

    青岛大学环境科学与工程学院, 青岛 266071

  • 2.

    山东省海洋生物质纤维材料及纺织品协同创新中心, 青岛大学, 青岛 266071

  • 3.

    青岛大学纤维新材料与现代纺织国家重点实验室培育基地, 青岛 266071

  • 基金项目:

    国家自然科学基金资助项目(51203083

    51303089)

    山东省自主创新项目(2013CXB80201)

  • 中图分类号: X703.1

Adsorption properties of natural oxidized cellulose in wastewater treatment

  • 1.

    College of environmental science and engineering, Qingdao University, Qingdao 266071

  • 2.

    Co-Innovation Center for Marine Biomass Fibers, Materials and Textiles of Shandong Province, Qingdao 266071, China

  • 3.

    Cultivating Base of National Key Lab of Novel Fibers and Modern Textiles Qingdao University, Qingdao 266071, China

  • Fund Project:

  • 摘要: 重金属污染已成为最严重的环境问题之一。纤维素是一种可生物降解的天然高分子,含量极其丰富。将纤维素经TEMPO/NaBr/NaClO体系进行氧化改性,得到了一种新型吸附材料——天然纤维素氧化物。研究了其对废水中Cu2+和Fe3+的去除效果,并探究吸附剂投加量、pH、温度、初始浓度和吸附时间对去除效率的影响。结果表明,室温条件下,在Cu2+浓度为100 mg/L和pH为5~6的溶液中,加入0.175 g吸附材料,吸附时间为60 min,可以得到99%的吸附效率;而Fe3+的溶液需要调节到pH值为4~5,添加的吸附材料是0.15 g,吸附效率也是99%以上。动力学研究还表明,该材料对Cu2+和Fe3+的吸附过程与Freundlich型及Langmuir型吸附等温模型都能较好地拟合。该新型吸附材料在废水处理行业将会有广阔的应用前景。
    Abstract: Heavy metal pollution has become one of the most serious environmental problems. The cellulose is the most abounded natural high polymer in the earth.We studied a new adsorption material which generated from oxidizing cellulose in a TEMPO/NaBr/NaClO system for the removal of Cu2+and Fe3+. Furthermore, the removal efficiency of adsorbent dosage, pH, temperature, initial concentration and adsorption time were all explored in detail. The results showed that under the conditions:the temperature of 25℃(room temperature), the Cu2+ concentration of 100 mg/L and the pH value of 5 to 6 in solution, dosing of 0.175 g natural oxidized cellulose and shaking for 60 min, its efficiency for Cu2+ adsorption achieved 99%. But for Fe3+, pH ranges was 4-5, adsorbent dosage was 0.150 g, its adsorption efficiency could also achieve 99%. Kinetic studies demonstrated that the adsorption process of Cu2+ and Fe3+ fitted well with Freundlich and Langmuir type adsorption isotherm in respective. All these prove that oxidized cellulose will have broad application in wastewater treatment industry as a new adsorption material in future.
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出版历程
  • 收稿日期:  2014-07-16
  • 刊出日期:  2015-10-14

天然氧化纤维素的吸附性能

  • 1.  青岛大学环境科学与工程学院, 青岛 266071
  • 2.  山东省海洋生物质纤维材料及纺织品协同创新中心, 青岛大学, 青岛 266071
  • 3.  青岛大学纤维新材料与现代纺织国家重点实验室培育基地, 青岛 266071
  • 收稿日期:  2014-07-16
基金项目:

国家自然科学基金资助项目(51203083

51303089)

山东省自主创新项目(2013CXB80201)

摘要: 重金属污染已成为最严重的环境问题之一。纤维素是一种可生物降解的天然高分子,含量极其丰富。将纤维素经TEMPO/NaBr/NaClO体系进行氧化改性,得到了一种新型吸附材料——天然纤维素氧化物。研究了其对废水中Cu2+和Fe3+的去除效果,并探究吸附剂投加量、pH、温度、初始浓度和吸附时间对去除效率的影响。结果表明,室温条件下,在Cu2+浓度为100 mg/L和pH为5~6的溶液中,加入0.175 g吸附材料,吸附时间为60 min,可以得到99%的吸附效率;而Fe3+的溶液需要调节到pH值为4~5,添加的吸附材料是0.15 g,吸附效率也是99%以上。动力学研究还表明,该材料对Cu2+和Fe3+的吸附过程与Freundlich型及Langmuir型吸附等温模型都能较好地拟合。该新型吸附材料在废水处理行业将会有广阔的应用前景。

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