关键词: 柚皮粉；中性红；吸附

Abstract: In order to explore the effect of the peel powder on the removal of dye wastewater, using peel powder as absorbent material，the simulated wastewater was collocated with the neutral red. The effects of such factors as dosage of peel powder, shaking time, the initial concentration of neutral red, temperature and so on, were investigated. The results show that when the temperature is 30 ℃, the removal rate of neutral red reaches more than 80%, the maximum absorption capacity is 49.20 mg/g in the neutral red concentration of 150 mg/L, peel powder 0.3 g/100 mL, shaking 60 min. The isothermal absorption equation and secondary absorption rate equation of Temkin can be used to describe the absorption process of peel powder to neutral red, and the main absorption process is physical absorption.

Key words: peel powder; neutral red; absorption