从水溶液中去除易布洛芬,使用诺瓦尔Al-改性生物炭
Dayang Yu1,2, Siqi Zeng1,2, Yifan Wu3
1School of Ecology and Environment, Beijing Technology and Business University, Beijing, 100048, China.
Environmental science and pollution research international
|October 14, 2023
概括
这项研究开发了一种来自大米的Al-改性生物炭,用于去除有机污染物. 这种新材料,Al-BC,与未经修改的生物炭相比,显著提高了从水中吸附布洛芬 (IBU).
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:
- 越来越多的有机排放带来了重大的环境挑战.
- 迫切需要有效的方法来控制水中的有机污染物.
- 基于生物炭的材料显示出对环境修复的希望.
研究的目的:
- 从大米中合成和表征Al-修改生物炭 (Al-BC).
- 为了评估Al-BC和未经修改的生物炭 (BC) 的吸附性能,以去除布洛芬 (IBU).
- 为了研究溶液pH对IBU吸附的影响.
主要方法:
- 水热碳化被用来合成来自大米的生物炭.
- 氧化复合物被加载到生物炭上以创建Al-BC.
- 扫描电子显微镜 (SEM) 用于材料表征.
- 进行了批量吸附实验,以评估不同pH值的IBU去除效率.
- 进行了朗格穆尔异热和热力学分析.
主要成果:
- 与BC.相比,Al-BC具有更高的特定表面积 (109.617 m2/g) 和更小的平均孔径 (3.969 nm).
- 在2-11的pH范围内,Al-BC显示出对IBU的优越吸附能力 (30.24-1.48 mg/g),表现优于BC (19.98-0.92 mg/g).
- 在pH 7下,IBU对Al-BC的和吸附能力达到60.49 mg/g,明显高于BC (18.68 mg/g).
- 溶液pH被确定为影响IBU吸附的关键因素.
- 热力学分析表明自发的,内热吸附与增加的障碍.
结论:
- 来自大米的Al-修改生物炭是一种有效的吸收剂对于有机污染物,如布洛芬.
- 与未经修改的生物炭相比,开发的Al-BC材料提供了增强的吸附能力和性能.
- 这项研究为开发用于水生环境中控制有机污染的先进材料提供了宝贵的参考.
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