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首页> 外文期刊>Journal of Wood Chemistry and Technology >Adsorbent Derived from Pinus pinaster Tannin for Cationic Surfactant Removal
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Adsorbent Derived from Pinus pinaster Tannin for Cationic Surfactant Removal

机译:樟子松单宁衍生的阳离子表面活性剂去除剂

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摘要

Abstract: Pinus tannin gel (PTG) has proven to be an effective adsorbent for removing various cationic pollutants including heavy metals, dyes, and surfactants. The form of obtaining these condensed tannins from Pinus pinaster bark was conventional aqueous extraction using 5.0% ethanol as additive. The present study focused on the removal of the surfactant hexadecyltrimethylammonium bromide (CTAB) from aqueous solutions using PTG. Kinetic studies showed tliat the Lagergren, Ho, and Elovich models all adequately explained the kinetics of CTAB adsorption onto PTG, with r2 correlation coefficients of around 0.98. The influences of pH and temperature were found not to be critical, and the CTAB-PTG system was modeled theoretically according to the Langmuir hypothesis using linear, nonlinear, and multiparametric forms, obtaining the values of the activation energies and such system constants as k_l.
机译:摘要:松质单宁凝胶(PTG)已被证明是一种有效的吸附剂,可去除多种阳离子污染物,包括重金属,染料和表面活性剂。从松树皮中获得这些缩合的单宁的形式是使用5.0%乙醇作为添加剂的常规水提取。本研究的重点是使用PTG从水溶液中去除表面活性剂十六烷基三甲基溴化铵(CTAB)。动力学研究表明,Lagergren,Ho和Elovich模型均能充分解释CTAB吸附在PTG上的动力学,r2相关系数约为0.98。发现pH和温度的影响不是关键性的,并且CTAB-PTG系统根据Langmuir假设在理论上使用线性,非线性和多参数形式建模,获得活化能的值和诸如k_1的系统常数。

著录项

  • 来源
    《Journal of Wood Chemistry and Technology》 |2012年第1期|p.23-41|共19页
  • 作者单位

    Chemical Engineering and Physical Chemistry Department, University of Extremadura, Badajoz, Spain;

    Chemical Engineering and Physical Chemistry Department, University of Extremadura, Badajoz, Spain;

    CIEPQPF, Chemical Engineering Department, FCTUC, University of Coimbra, Coimbra, Portugal,ESAC, Politechnical Institute of Coimbra, Coimbra, Portugal;

    CIEPQPF, Chemical Engineering Department, FCTUC, University of Coimbra, Coimbra, Portugal;

    CIEPQPF, Chemical Engineering Department, FCTUC, University of Coimbra, Coimbra, Portugal;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    pinus pinaster; tannin; CTAB; surfactant removal; natural adsorbents; gelation;

    机译:松松单宁CTAB;表面活性剂去除;天然吸附剂胶凝;

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