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Abstract：
The main objective of the study was to prepare a series of new activated biocarbons by means of physical and chemical activation of elderberry inflorescence. The influence of carbon matrix nitrogenation/oxidation on the physicochemical properties and sorption abilities of the carbonaceous materials was investigated. The impact of initial dye concentration, pH and temperature of the system on methylene blue and rhodamine B removal efficiency was checked. It was shown that activation of elderberry inflorescences with CO2 or H3PO4, and their further modification by introducing nitrogen or oxygen functional groups, allowed us obtain a wide range of materials that differ significantly in terms of the chemical nature of the surface, degree of specific surface development and the type of porous structure generated. The samples prepared by chemical activation proved to be very effective in terms of cationic dyes adsorption. The maximum sorption capacity toward methylene blue and rhodamine B reached the level of 277.8 and 98.1 mg/g, respectively. A better fit to the experimental data was achieved with a Langmuir isotherm than a Freundlich one. It was also shown that the efficiency of methylene blue and rhodamine B adsorption from aqueous solutions decreased with increasing temperature of the system.
摘要：
研究的主要目的是通过物理和化学活化接骨木花序来制备一系列新的活化生物碳。研究了碳基质氮化/氧化对含碳材料理化性质和吸附能力的影响。染料初始浓度的影响，体系的pH和温度对亚甲基蓝和罗丹明B的去除效力停止了考核。研究表明，用CO2或H3PO4激活接骨木花序，并通过引入氮或氧官能团对其进行进一步修饰，使我们获得了广泛的材料，这些材料在表面的化学性质方面存在显着差异，比表面发展的程度和产生的多孔结构的类型。通过化学活化制备的样品被证明在阳离子染料吸附方面非常有效。对亚甲基蓝和罗丹明B的最大吸附量分别达到277.8和98.1mg/g，分别。Langmuir等温线比Freundlich等温线更好地拟合了实验数据。还表明，随着系统温度的升高，从水溶液中吸附亚甲基蓝和罗丹明B的效率降低。
