It was found that the chemical enhancement of fly ash from coal combustion by tetrabutylammonium bromide treatment yields an effective and economically feasible material for the treatment of chromium and basic dye Rhodamine B containing effluents. Characterisation of coal fly ash and treatment with tetrabutylammonium bromide were done by using a Fourier transform infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, confocal three-dimensional microscope, X-ray diffraction and laser particle sizer. The studies of equilibrium in a bi-component system by means of extended Langmuir, extended Langmuir–Freundlich and Jain–Snoeyink models were analysed. The estimation of parameters of sorption isotherms in a bi-component system metal-dye has shown that the best-of-fit calculated values of experimental data for both sorbates have been the Jain–Snoeyink model and the extended Langmuir model, but only in the case of a Rhodamine B. The maximum monolayer adsorption capacity of the fly ash–tetrabutylammonium bromide was found to be 863 mg g−1 and 670 mg g−1 for chromium and Rhodamine B, respectively.

中文翻译：

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煤燃烧固体废物的表征和利用以模拟双组分系统金属染料中的吸附平衡

研究发现，通过四丁基溴化铵处理对煤燃烧产生的飞灰进行化学强化，可以产生一种有效且经济可行的材料，用于处理含铬和碱性染料罗丹明 B 的废水。通过使用傅里叶变换红外光谱、扫描电子显微镜、能量色散 X 射线光谱、共聚焦三维显微镜、X 射线衍射和激光粒度仪对粉煤灰进行表征和用四丁基溴化铵处理。分析了通过扩展 Langmuir、扩展 Langmuir-Freundlich 和 Jain-Snoeyink 模型对双组分系统中的平衡研究。