This work demonstrates the adsorption capacity of carbon micro- (CF) and nanofibrous (CNF) adsorbents differing in specific surface area, fiber diameter and open porosity in the removal of NaCl from water. The effect of the adsorption conditions, i.e. contact time, initial salt concentration, and oxidative surface treatment on the adsorption kinetics and equilibrium salt uptake capacity was investigated. Adsorption experiments were carried out by batch-mode experiment at room temperature. The study showed that activated CNF exhibit high adsorption capacity for NaCl, namely 827.5 mgNaCl/gCNF, and this value is over 40 times higher than that of activated carbon and exceeds the values reported for CNT and GO. The adsorption kinetics followed the pseudo-second-order kinetic model and was largely controlled by the intramolecular diffusion rate. The equilibrium data showed a good correlation with the Langmuir and Freundlich isotherms, which supported the complex interaction of salt with the carbon surface. It was shown that salt ions can be attached to the fibrous surface both by ion-exchange mechanisms and electrostatic interactions. The carbon fibrous adsorbents present a new approach to water desalination through the mechanism of adsorption and continuous crystallization, and may be used for the elaboration of new type membranes for water purification and desalination.

这项工作证明了从水中除去NaCl时，比表面积，纤维直径和开孔率不同的碳微（CF）和纳米纤维（CNF）吸附剂的吸附能力。研究了吸附条件，即接触时间，初始盐浓度和氧化表面处理对吸附动力学和平衡盐吸收能力的影响。在室温下通过间歇模式实验进行吸附实验。研究表明，活化的CNF对NaCl表现出较高的吸附容量，即827.5 mgNaCl / gCNF，该值是活性碳的40倍以上，并且超过了CNT和GO的报告值。吸附动力学遵循拟二级动力学模型，并在很大程度上受分子内扩散速率的控制。平衡数据显示与Langmuir和Freundlich等温线具有良好的相关性，这支持了盐与碳表面的复杂相互作用。结果表明，盐离子可以通过离子交换机制和静电相互作用而附着在纤维表面。碳纤维吸附剂通过吸附和连续结晶的机理提出了一种新的水脱盐方法，可用于精细化新型膜以进行水的净化和脱盐。