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酸盐在新型蛋上的吸附 Ca-改性无氧污泥基生物炭:吸附性能和机制

Guang-Hui Zhuo¹, Dong-Xin Xue¹, Long-Fei Huang¹

¹School of Energy and Environment, Southeast University, Nanjing, China.

|November 26, 2025

概括

来自消化剂和蛋的修饰生物炭有效地从废水中去除酸盐. 这种可持续的方法将废物转化为高容量的吸附剂,解决污染和资源短缺问题.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
废物管理废物管理

背景情况:

(P) 污染和资源短缺需要有效地从废水中回收酸盐.
从废物中开发可持续吸附剂对于环境修复和资源管理至关重要.

研究的目的:

从无氧消化物和废卵中开发修饰生物炭 (ESBC-1),以增强酸盐吸附.
评估ESBC-1在废水中的吸附能力,pH适应性和去除效率.

主要方法:

在700°C的消化剂和蛋的联合热解以产生Ca-改性生物炭 (ESBC-1).
在不同的pH条件下和在真实的沼气废水中进行酸盐吸附实验.
使用SEM-EDS,FTIR,XRD和XPS进行吸附剂的表征.

主要成果:

ESBC-1 显示出出色的 pH 适应性 (在 pH 3-10 范围内波动 < 8%),酸盐吸附能力为 97.74 mg/g,比未经修改的生物炭高 7.9 倍.
吸附遵循伪二次动力学和弗洛伊德利希异热模型,表明化学吸附和异质场所.
兰木尔的最大吸附能力达到529.10 mg/g,明显高于未经修改的生物炭 (287.72 mg/g).
在实际的沼气废水中,酸盐去除率达到75.23%,剂量为8g/L.

结论:

改生物炭 (ESBC-1) 是一种高效和可持续的吸附剂,用于从废水中去除酸盐.
该过程涉及化学沉,形成不溶性酸,由表面的离子驱动.
本研究提出了一种可行的废物利用战略,用于污染控制和资源回收.

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