Rhodamine B contributes significantly to environmental pollution, because it is nonbiodegradable, toxic and harmful to the environment. One effort to reduce the amount of Rhodamine B is the adsorption process. The purpose of this study to determine the effect of adsorption temperature, pH, adsorbent mass. Knowing the optimum conditions for reducing the levels of dye in the water, as well as determine the adsorption equilibrium modelsRhodamine B using fly ash oil modified with 1.4 NaOH as an adsorbent. fly ash modification processes are done by mixing fly ash and NaOH in the ratio 1: 4. The adsorption process isconducted by mixing fly ash oil and pH solution of rhodamine B. The optimum conditions for reducing the levels of rhodamine B in water is the adsorbent mass of 5 g/L, temperature of45°C and pH 2. Thermodynamic data such as ΔH, ΔG and ΔS were calculated. And the mechanism of rhodamine B dye adsorption by fly ash oil is dominated by Freundlich isotherm models representing physical adsorption.
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机译：罗丹明B不可生物降解，有毒且对环境有害，因此对环境污染有重大贡献。减少罗丹明B含量的一种方法是吸附过程。本研究的目的是确定吸附温度，pH，吸附剂质量的影响。了解降低水中染料含量的最佳条件以及确定吸附平衡模型罗丹明B使用以1.4 NaOH改性的粉煤灰油作为吸附剂。粉煤灰的改性过程是通过将粉煤灰和NaOH以1：4的比例混合进行的。吸附过程是通过将粉煤灰油和罗丹明B的pH溶液混合进行的。降低水中若丹明B含量的最佳条件是吸附剂质量为5 g / L，温度为45°C，pH为2。计算了热力学数据，例如ΔH，ΔG和ΔS。粉煤灰对罗丹明B染料的吸附机理主要由代表物理吸附的Freundlich等温模型决定。
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