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以改性烟草秸秆(AD-MTS)为吸附剂,研究其投加量和溶液pH对水中刚果红去除效果的影响,并探讨了不同解吸条件对AD-MTS解吸效果的影响以及AD-MTS再生的可行性。结果表明,AD-MTS对溶液中刚果红具有良好的去除效果,0.02 g AD-MTS对25 m L浓度为100 mg·L~(-1)刚果红的去除率达99.44%,且在酸性溶液中有利于AD-MTS对刚果红的去除。Na OH能实现刚果红的有效解吸,以0.05 mol·L~(-1)Na OH为解吸剂,在常温下解吸30 min,对吸附刚果红饱和的AD-MTS的解吸率达72.15%,在此解吸条件下,对AD-MTS进行3次吸附-解吸实验,表明Na OH溶液可以实现AD-MTS多次再生利用。
AD-MTS was used as adsorbent to study the effects of dosage and solution pH on the removal of congo red in water. The effects of different desorption conditions on desorption of AD-MTS and the regeneration of AD-MTS Feasibility. The results showed that AD-MTS had good removal effect on congo red in solution. The removal efficiency of 0.02 g AD-MTS to congo red with a concentration of 100 mg · L -1 at 25 m L was 99.44% In favor of AD-MTS removal of Congo red. Na OH can achieve the effective desorption of Congo red. With desorption of 0.05 mol·L -1 NaOH as desorbent at room temperature for 30 min, the desorption rate of Congo red saturated AD-MTS reached 72.15% Under this desorption condition, three adsorption-desorption experiments on AD-MTS showed that Na-OH solution could be used for multiple regeneration of AD-MTS.