通过吸附使用Delonix regia树皮从水溶液中提取的活性炭来有效地去除:一种可持续的方法
Janet Joshiba Ganesan1, Chia-Shang Chang Chien2, P Senthil Kumar3
1Railway Technical Centre, National Kaohsiung University of Science and Technology, No 1, University Road, Yanchao District, Kaohsiung City, 82445, Taiwan (ROC).
Environmental geochemistry and health
|July 13, 2024
概括
一种新的Delonix regia树皮活性碳生物吸收剂有效地从水中去除有毒的 (Cr(VI)). 这种环保吸附剂显示出高容量和可重复使用的净化水.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 水处理技术水处理技术
背景情况:
- (Cr) 是水系统中的有毒重金属污染物.
- 有效和可持续的Cr6去除方法对于环境保护至关重要.
- 基于植物的生物吸收剂为传统治疗方法提供了一个有希望的替代方案.
研究的目的:
- 开发和鉴定Delonix regia树皮活性炭的新生物吸收剂,用于Cr (VI) 去除.
- 为了研究吸附性能和最佳条件的Cr (VI) 去除.
- 评估开发的生物吸收剂的可重复使用性和环保性.
主要方法:
- 从Delonix regia树皮中合成活性炭,使用酸激活.
- 使用FTIR,SEM和BET分析进行生物吸收剂的表征.
- 批量吸附实验以确定最佳的pH值,剂量,接触时间和温度.
主要成果:
- 德洛尼克斯 (Delonix regia) 树皮活性碳 (DAC) 生物吸收剂在去除Cr (VI) 离子方面显示出高效率.
- 最佳吸附发生在pH值2,2.5g/L剂量,60分钟接触时间和303K时.
- 最大吸附容量达到224.8mg/g,遵循弗洛伊德利希等温和伪二次动力学.
结论:
- DAC生物吸收剂是一种有效的,环保的,可重复使用的材料,用于从水中去除Cr (VI).
- 吸附过程是自发的,外热的,并且在热力学上可行.
- 本研究提出了一种可持续的解决方案,用于处理受Cr (VI) 污染的水源.
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