Dyeing wastewater released from dye-utilizing industries containing numerous hazardous dyes poses serious threat to environment and human beings, thus removal of dyes from wastewater is an important issue. In current work, guanidinium functionalized cellulose (GFC) was prepared by radiation emulsion grafting glycidyl methacrylate onto cellulose followed by further modification with guanidine hydrochloride. The radiation grafting and modification conditions were optimized. The GFC used for dyes removal was obtained with grafting yield of 238% at dose of 20 kGy and guanidinium group (%) of 16.49%. The adsorption behaviors towards methyl orange (MO) and acid fuschin (AF) were investigated. Adsorption kinetics was well described by pseudo-second-order kinetic mode. The adsorption isotherm was well fitted with Langmuir isotherm model. The adsorption capacity for MO and AF reached 63.25 mg/g and 120.4 mg/g, respectively. Therefore, the GFC exhibited excellent adsorption performance, which was applicable for MO and AF removal of water treatment.

染料工业排放的染料废水中含有大量有害染料，对环境和人类造成严重威胁，因此从废水中去除染料是一个重要问题。在目前的工作中，胍官能化纤维素（GFC）是通过辐射乳液将甲基丙烯酸缩水甘油酯接枝到纤维素上，然后用盐酸胍进一步改性来制备的。优化了辐射接枝和改性条件。用于染料去除的GFC在20 kGy剂量和16.49%的胍基(%)下获得了238%的接枝率。研究了对甲基橙 (MO) 和酸性品红 (AF) 的吸附行为。通过准二级动力学模式很好地描述了吸附动力学。吸附等温线很好地符合 Langmuir 等温线模型。MO和AF的吸附量分别达到63.25 mg/g和120.4 mg/g。因此，GFC表现出优异的吸附性能，适用于水处理的MO和AF去除。