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用NaOH改性后的竹叶粉作为吸附剂,采用静态吸附法,研究了NaOH浓度、竹叶粉投加量、pH、染料浓度和吸附时间等因素对改性竹叶(MBL)吸附刚果红的影响。结果表明:在NaOH浓度为20.00g/L的条件下,当溶液pH=7.0,MBL投加量为2.00g/L,吸附时间为120min时,MBL对100mg/L刚果红模拟印染废水(CRW)吸附效果最好,去除率可达96.29%,此时吸附量为48.14mg/g。吸附动力学研究表明,该吸附过程符合伪二级动力学模型,属于化学吸附。其等温吸附方程可以用Langmuir方程描述,表现为单分子吸附。
Using NaOH-modified bamboo leaf powder as adsorbent, static adsorption method was used to study the effects of NaOH concentration, bamboo powder dosage, pH, dye concentration and adsorption time on the adsorption of congo red Impact. The results showed that under the conditions of NaOH concentration of 20.00g / L, MBL had no significant effect on 100mg / L Congo red Dyeing Wastewater (CRW) when the pH was 7.0, the MBL dosage was 2.00g / L and the adsorption time was 120min, The best adsorption efficiency, the removal rate of up to 96.29%, the adsorption capacity of 48.14mg / g. Adsorption kinetics studies show that the adsorption process in line with the pseudo-second-order kinetic model, belongs to the chemical adsorption. Isothermal adsorption equation can be described by Langmuir equation, the performance of single-molecule adsorption.