Scholarlink

<p>Here, we conducted the synthesis of carbon-based adsorbents derived from an expired instant noodle product for the removal of sulfadiazine. ZnCl<sub>2</sub> was used as an effective activator at different impregnation ratios (1:4, 1:2, 1:1, and 3:2, w/w) to create activated carbons. We found that ZnCl<sub>2</sub> activation brought a porous structure and increased structural defect. Batch adsorption was performed to evaluate the effect of contact time (0–120&#xa0;min), dosage (0.25–1.0&#xa0;g/L), pH (3–9), and SDZ concentration (2.5–20&#xa0;mg/L). Equilibrium sulfadiazine adsorption was mostly achieved at 60 min and pH 7. Chemisorption and monolayer adsorption might play key roles in sulfadiazine adsorption. The adsorbent activated at an impregnation ratio of 1:1 showed a Q<sub>m</sub> of 51&#xa0;mg/g. Thus, this work suggests that the strategy of converting expired food waste into adsorbents can be feasible to alleviate water contamination caused by pharmaceuticals.</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

Adsorption equilibrium and modeling of sulfadiazine removal using carbon-based adsorbents derived from expired instant noodle product

  • 期刊论文

  • 发表日期：

    2025年9月5日

查看全文
  • Duyen Thi Cam Nguyen,
  • Thuan Van Tran

摘要

Here, we conducted the synthesis of carbon-based adsorbents derived from an expired instant noodle product for the removal of sulfadiazine. ZnCl2 was used as an effective activator at different impregnation ratios (1:4, 1:2, 1:1, and 3:2, w/w) to create activated carbons. We found that ZnCl2 activation brought a porous structure and increased structural defect. Batch adsorption was performed to evaluate the effect of contact time (0–120 min), dosage (0.25–1.0 g/L), pH (3–9), and SDZ concentration (2.5–20 mg/L). Equilibrium sulfadiazine adsorption was mostly achieved at 60 min and pH 7. Chemisorption and monolayer adsorption might play key roles in sulfadiazine adsorption. The adsorbent activated at an impregnation ratio of 1:1 showed a Qm of 51 mg/g. Thus, this work suggests that the strategy of converting expired food waste into adsorbents can be feasible to alleviate water contamination caused by pharmaceuticals.