The toxic anionic dye of methyl orange encapsulation was studied using biodegradable natural carbohydrate polymeric adsorbents of rice flour (RF) and graham flour (GF). The adsorbents were characterized by several instrumentations to understand the functionality and potential use. The dye adsorption parameter was measured based on the solution acidity, contact time, initial concentration effect, competing anions affinity, bonding mechanism, maximum adsorption capacity and reuses with biodegradability. The solution acidity was exhibited the key factor, and the suitable pH 7.0 and 5.50 were selected for RF and GF adsorbent, respectively based on the efficiency. The competing ions were not adversely affected in the dye adsorption as defined by the stable bonding mechanism. The adsorption data were highly fitted with the Langmuir adsorption model with monolayer coverage. The determined maximum adsorption was 173.24 and 151.27 mg/g for RF and GF, respectively, which was comparable with the other forms of materials. The desorption data was promising as the RF and GF adsorbents were used several cycles and therefore, the biodegradable adsorbents are promising to use in the real sample treatment to clean up the contaminated water.

使用大米粉（RF）和全麦粉（GF）的可生物降解的天然碳水化合物聚合物吸附剂研究了甲基橙封装的有毒阴离子染料。几种仪器对吸附剂进行了表征，以了解其功能和潜在用途。根据溶液的酸度，接触时间，初始浓度效应，竞争性阴离子亲和力，键合机理，最大吸附容量和具有生物降解性的再利用来测量染料的吸附参数。溶液的酸度是关键因素，并根据效率分别为RF和GF吸附剂选择了合适的pH 7.0和5.50。如稳定的键合机理所定义，竞争离子对染料的吸附没有不利影响。吸附数据与具有单层覆盖的Langmuir吸附模型高度拟合。测得的RF和GF的最大吸附分别为173.24和151.27 mg / g，与其他形式的材料相当。由于RF和GF吸附剂使用了多个循环，因此解吸数据很有希望，因此，可生物降解的吸附剂有望用于实际样品处理中以净化污水。