Scholarlink

<p>Phenol, a significant organic pollutant present in wastewater from industries such as petroleum refineries, petrochemicals, polymers, and pharmaceuticals, poses a severe environmental concern due to its toxic and harmful nature. Thus, the importance of removing phenol from wastewater has increased. However, conventional methods of phenol removal, such as adsorption, are often hindered by the high costs associated with the adsorbent materials. The present study focuses on identifying a low-cost and an efficient adsorbent to address this issue. Cotton bracts (CB) obtained from a local cotton farm were used to prepare the adsorbent. The adsorbent was thoroughly characterized using techniques such as Thermogravimetric Analysis (TGA), Scanning Electron Microscopy (SEM), Fourier Transform Infrared spectroscopy (FTIR), Brunauer–Emmett–Teller analysis (BET) and X-ray diffraction analysis (XRD) and Point of zero charge (pH<sub>ZC</sub>). In addition, the adsorbent was altered into activated carbon (AC), and the feasibility of using both CB and activated cotton bracts (ACB) derived from CB was investigated and optimized. Strong correlations were found between the phenol equilibrium adsorption data and the Langmuir isotherm models. Furthermore, adsorption kinetics followed the pseudo-second order kinetic model. Importantly, the negative value of ∆G° (&lt; 0) indicates that the process is spontaneous, further supporting the efficacy of the adsorption method using CB and ACB as adsorbents.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Kinetic and Thermodynamic Investigations of Phenol Removal from Refinery Effluent Using Agricultural Waste and its Activated Carbon

  • 期刊论文

  • 发表日期：

    2025年1月20日

查看全文
  • Balasubramanian Ragunathan,
  • Himanshu Choksi,
  • Anirbid Sircar,
  • Sivakumar Pandian

摘要

Phenol, a significant organic pollutant present in wastewater from industries such as petroleum refineries, petrochemicals, polymers, and pharmaceuticals, poses a severe environmental concern due to its toxic and harmful nature. Thus, the importance of removing phenol from wastewater has increased. However, conventional methods of phenol removal, such as adsorption, are often hindered by the high costs associated with the adsorbent materials. The present study focuses on identifying a low-cost and an efficient adsorbent to address this issue. Cotton bracts (CB) obtained from a local cotton farm were used to prepare the adsorbent. The adsorbent was thoroughly characterized using techniques such as Thermogravimetric Analysis (TGA), Scanning Electron Microscopy (SEM), Fourier Transform Infrared spectroscopy (FTIR), Brunauer–Emmett–Teller analysis (BET) and X-ray diffraction analysis (XRD) and Point of zero charge (pHZC). In addition, the adsorbent was altered into activated carbon (AC), and the feasibility of using both CB and activated cotton bracts (ACB) derived from CB was investigated and optimized. Strong correlations were found between the phenol equilibrium adsorption data and the Langmuir isotherm models. Furthermore, adsorption kinetics followed the pseudo-second order kinetic model. Importantly, the negative value of ∆G° (< 0) indicates that the process is spontaneous, further supporting the efficacy of the adsorption method using CB and ACB as adsorbents.