Dye removal from wastewater using the adsorbent developed from sewage sludge
  • 【DOI】

    10.3321/j.issn:1001-0742.2005.06.029

  • 【摘要】

    Sewage sludge was used to develop an effective carbon adsorbent. This adsorbent was employed for the removal of azo dye such as Direct Dark Brown M and Acid Mordant Brown RH. The adsorption of dyes on... 展开>>Sewage sludge was used to develop an effective carbon adsorbent. This adsorbent was employed for the removal of azo dye such as Direct Dark Brown M and Acid Mordant Brown RH. The adsorption of dyes on this adsorbent was studied as a function of contact time, concentration, pH and temperature by batch method. The equilibrium adsorption capacity of a carbonaceous adsorbent prepared from city wastewater treatment plant was 502, and 329.7 mg/g of Direct Dark Brown M and Acid Mordant Brown RH, respectively. The experimental data were analyzed by the Langmuir and Freundlich models of adsorption. Equilibrium data fitted well with the Langmuir model. The rates of adsorption were found to conform to the Lagergren second-order kinetics with good correlation. The equilibrium adsorption capacity of the carbonaceous adsorbents was determined with the Langmuir equation as well as the Lagergren second-order rate equation. The most ideal pH for adsorption of two dyes onto adsorbents was found to be 3 and below. The results indicate that the carbonaceous adsorbents could be employed as a low cost adsorbent in the removal of dyes from wastewater. 收起<<

  • 【作者】

  • 【作者单位】

    School of Municipal and Environmental Engineering/School of Municipal and Environmental Engineering/School of Biological and Environmental Engineering

  • 【刊期】

    环境科学学报(英文版) ISTIC SCI 2005年6期

  • 【关键词】

    adsorbent  sewage sludge  azo dye  isotherms  kinetics 

  • 【基金项目】

    国家自然科学基金 the Ministry of Education Item Collaborated by Nankai University and Tianjin University