使用改性饮用水处理残留物增强吸附:对粉末和酸盐珠形状进行比较分析
Sitthichai Chaikhan1, Somjate Thongdamrongtham1, Supanee Junsiri1
1College of Medicine and Public Health, Ubon Ratchathani University, Ubon Ratchathani, Thailand.
Heliyon
|October 14, 2024
概括
改性饮用水处理残留物 (MDWTRs) 进行了吸附测试. MDWTR-D5是一种酸盐珠形,表现出卓越的去除效率和能力,表明其在废水处理和环境整治方面的潜力.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 饮用水处理残留物 (DWTRs) 经常被填埋,这给环境带来了挑战.
- 开发具有成本效益和可持续的方法来从废水中去除是至关重要的.
- 修改后的DWTRs (MDWTRs) 为营养管理和资源回收提供了一个潜在的解决方案.
研究的目的:
- 评估三种改性饮用水处理残留物 (MDWTRs) 的吸附功效.
- 为了比较粉末 (MDWTR-P) 和酸盐珠圈 (MDWTR-D2,MDWTR-D5) 形式的性能.
- 评估MDWTRs在环境应用中的物理化学性质,吸附动力学,异温和安全性.
主要方法:
- 准备MDWTR,包括焚烧和酸盐珠制剂.
- 表面积,毛孔体积,毛孔大小和元素组成 (CHN,金属) 的表征.
- 吸附实验分析使用伪第一阶,伪第二阶,粒子内部扩散模型,兰迈尔和弗罗恩德利希等温.
- 通过毒性特征漏程序 (TCLP) 和体外生物可访问性 (IVBA) 试验进行安全性评估.
主要成果:
- MDWTR-D5表现出最大的表面积 (284.7 m2 g−1) 和最高的微孔体积 (0.04 cm3 g−1).
- MDWTR-D5表现出最高的吸附能力 (22.88 mg g-1 基于兰穆尔异热法) 和初始吸附率.
- 所有的MDWTR通过TCLP和IVBA测试证实无危险性,MDWTR-D5显示高铁含量.
结论:
- MDWTR-D5是一种高效的吸附剂,用于从废水中去除.
- 酸盐珠矩阵增强了改性残留物的吸附性能和稳定性.
- MDWTR-D5为环境修复和回收提供了一个有前途,安全和可持续的材料.
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