硫化在气相中被碳化渣修饰的本托尼特废渣去除
Qi Jiang1, Ming Jiang1, Tianci Han2
1College of Resources and Environment, Yunnan Agricultural University Kunming China mingjiang2010@163.com.
RSC advances
|July 13, 2023
概括
碳化渣增强了化 (H2S) 清除的本托尼特吸附剂,提高了超过40倍的容量. 最佳条件包括3: 5的渣与矿的比率,450°C的化和95°C的反应温度.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 硫化 (H2S) 是一种有毒和腐蚀性气体,需要有效的去除方法.
- 石是一种常见的吸附材料,但其H2S吸附能力有限.
- 作为工业副产品的碳化物渣,为开发新型吸附剂提供了机会.
研究的目的:
- 开发和优化与碳化物渣修改的本托尼特基吸附剂,以增强H2S去除.
- 研究各种参数对改性吸附剂的H2S吸附能力的影响.
- 阐明H2S在开发的材料上的吸附机制和动力学.
主要方法:
- 采用湿混合方法,使用碳化物渣制备基于土的吸附剂.
- 碳化物渣含量,化温度和时间,反应温度的系统变化.
- 进行了吸附实验,以评估H2S去除效率和能力.
- 使用弗洛伊德利希和班哈姆模型分析了吸附同热量和动力学.
主要成果:
- 碳化渣修改的本托尼特吸附剂显示出显著增强的H2S吸附能力 (2.50 mg g-1),超过空白本托尼特 (0.06 mg g-1) 的40倍.
- 最佳条件是3: 5碳化物渣与岩的比率,在450°C2小时内化,反应温度为95°C.
- 脱离H2S主要发生在介质孔和巨孔中,在吸附剂表面转化为CaS和硫酸盐.
结论:
- 碳化渣修饰有效地增强了由本托尼特基吸附剂对H2S的化学吸收.
- 优化的吸附剂在实际的H2S去除应用中具有很高的潜力.
- 吸附过程遵循弗洛伊德利希等温和班哈姆运动模型,为进一步的过程设计提供了洞察力.
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