通过对基于粉的生物炭进行臭氧三乙烯四胺修饰,从水性介质中改善甲蓝的吸附
Mohamed A Hassaan1, Murat Yılmaz2, Mohamed Helal1
1National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, Elanfoushy, Alexandria, Egypt.
Scientific reports
|August 1, 2023
概括
粉生物炭-臭氧-三乙烯胺 (SDBT) 有效地从水中去除甲蓝染料,达到99.75%的去除率. 这种新型的生物炭吸附剂显示出高效率和可重复使用性,用于废水处理.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 吸附科学 吸附科学
背景情况:
- 染料污染废水造成环境风险.
- 开发高效的吸附剂对于去除染料至关重要.
- 基于生物炭的材料为净化水提供了可持续的解决方案.
研究的目的:
- 为了合成和表征一种新的粉生物炭-臭氧-三乙烯胺 (SDBT) 吸附剂.
- 为了研究SDBT从水溶液中去除甲蓝 (MB) 染料的吸附效率.
- 评估吸附机制,动力学,和MB染料对SDBT吸附的异热模型.
主要方法:
- 粉生物炭经过硫酸,臭氧和三乙烯四胺 (TETA) 的处理.
- 使用SEM-EDX,BET,XRD,BJH,FT-IR,DTA和TGA进行SDBT的表征.
- 进行了批量吸附实验,以确定最佳条件 (pH,剂量,度) 并分析吸附动力学和异热量.
主要成果:
- SDBT证明了MB染料的高吸附效率,在pH12时最大去除率为99.75%
- 发现SDBT的最大吸附能力 (Q_m) 是568.16 mg/g.
- 吸附遵循伪二阶动力学,并且很好地适应了特姆金,弗洛因德利希和兰格穆尔的异热模型,表明一种化学吸附过程.
- 移除机制涉及SDBT和MB染料之间的物理相互作用和静电吸引.
结论:
- SDBT是一种高效且可重复使用的吸附剂,用于去除甲蓝色染料.
- 该研究提供了关于SDBT在废水处理中的吸附机制和性能的见解.
- SDBT显示了在从水环境中去除有机污染物的实际应用的潜力.
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