从水溶液中对酸改性枣种子生物炭进行 (II) 的生物吸收:实验和质量转移研究
Khursheed B Ansari1, Mohd Danish2, Mohammed K Al Mesfer3
1Department of Chemical Engineering, College of Engineering, King Khalid University, 61411, Abha, Saudi Arabia.
Environmental science and pollution research international
|January 13, 2025
概括
新的酸改性枣种子生物炭有效地从水中去除离子 (Co ((II)). 这种具有成本效益的生物吸收剂显示出高容量和可重复使用性,为重金属污染提供了可持续的解决方案.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 水处理 处理水的方法
背景情况:
- 重金属污染,特别是离子 (Co2II),对环境和健康构成重大风险.
- 迫切需要有效和经济的方法来从水中去除重金属.
研究的目的:
- 为了合成和评估新的,成本效益高的生物吸收剂从日种子去除离子.
- 为了研究合成的生物吸收剂的吸附能力,动力学和热力学.
主要方法:
- 枣子种子经过化学修饰,用酸进行化,在400,500和600°C时进行化,以产生酸修饰的枣子种子生物炭 (AMDB).
- 进行了批量吸附实验,以评估CO2的去除效率,吸附动力学和异温建模.
- 应用了热力学分析和粒子内扩散模型来了解吸附机制.
主要成果:
- 合成的生物吸收剂 (AMDB400,AMDB500,AMDB600) 显示出显著的Co2去除,AMDB600达到最高容量 (149.5 mg/g).
- 在50-100分钟内达到吸附平衡,动力分析表明吸附强.
- 泰姆金的同热和热力学研究显示,在异质的生物吸收表面上,通过表面扩散控制的自发的外热吸附.
结论:
- 经过酸改性枣种子生物炭是一种有希望的,具有成本效益的材料,可以有效地从污染水中去除离子.
- 生物吸收剂具有良好的可重复使用性 (88.7%在五个循环后),突出显示了其在可持续水处理应用中的潜力.
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