Scholarlink

<p>A commonly used antipyretic and analgesic, acetaminophen (ACT) is also known as an emerging pollutant found in domestic and hospital wastewater, posing environmental and health risks. This study explores the adsorption of ACT using Falcata tree sawdust activated carbon (FTSAC), a by-product of the timber industry. Optimization through central composite design of the response surface methodology (RSM) predicted an optimal ACT removal efficiency of 69.26% at 0.80&#xa0;g FTSAC dosage, 20-min contact time, pH 7.76, and an initial ACT concentration of 100&#xa0;mg/L. Experimental validation confirmed a removal efficiency of 67.25%, consistent with the model’s 95% confidence interval. FTSAC was characterized using scanning electron microscopy, revealing an irregular, heterogeneous structure characterized by agglomerate particles with rough and porous surface. Additionally, Fourier transform infrared analysis identified functional groups such as hydroxyl groups and carbon-containing moieties, highlighting the material’s complex composition and surface characteristics. Adsorption isotherm analysis showed Langmuir model best describe the adsorption behavior of ACT onto FTSAC, suggesting a monolayer on a homogeneous surface. Kinetic studies confirmed pseudo-second-order kinetics (<i>R</i><sup>2</sup> = 0.98995), indicating chemisorption occurrence of adsorption mechanism. These findings demonstrate the potential of FTSAC as cost-effective, sustainable adsorption for pharmaceutical wastewater treatment, supporting circular economy context.</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

Optimized Removal of Acetaminophen from Aqueous Solution Using Falcata Sawdust-Derived Activated Carbon: Characterization and Kinetic Analysis

  • 期刊论文

  • 发表日期：

    2025年9月2日

查看全文
  • Jazper D. Balan,
  • Alan E. Tubira,
  • Ramil Kyle Frances T. Getizo,
  • Rekich R. Pahunang

摘要

A commonly used antipyretic and analgesic, acetaminophen (ACT) is also known as an emerging pollutant found in domestic and hospital wastewater, posing environmental and health risks. This study explores the adsorption of ACT using Falcata tree sawdust activated carbon (FTSAC), a by-product of the timber industry. Optimization through central composite design of the response surface methodology (RSM) predicted an optimal ACT removal efficiency of 69.26% at 0.80 g FTSAC dosage, 20-min contact time, pH 7.76, and an initial ACT concentration of 100 mg/L. Experimental validation confirmed a removal efficiency of 67.25%, consistent with the model’s 95% confidence interval. FTSAC was characterized using scanning electron microscopy, revealing an irregular, heterogeneous structure characterized by agglomerate particles with rough and porous surface. Additionally, Fourier transform infrared analysis identified functional groups such as hydroxyl groups and carbon-containing moieties, highlighting the material’s complex composition and surface characteristics. Adsorption isotherm analysis showed Langmuir model best describe the adsorption behavior of ACT onto FTSAC, suggesting a monolayer on a homogeneous surface. Kinetic studies confirmed pseudo-second-order kinetics (R2 = 0.98995), indicating chemisorption occurrence of adsorption mechanism. These findings demonstrate the potential of FTSAC as cost-effective, sustainable adsorption for pharmaceutical wastewater treatment, supporting circular economy context.