采用柚子皮粉末吸附水中Cu2+。通过单因素实验考察了温度、p H、Cu2+的初始浓度、吸附时间和投加量对吸附效果的影响。最佳吸附条件为:温度为室温,p H为6.0,Cu2+的初始浓度为20 mg/L,吸附时间为20 min,投加量为0.15 g/50 m L。在该条件下,吸附率能够达到60%以上。热力学和动力学试验表明吸附符合Langmuir等温吸附模式和准二级动力学模型。 Grapefruit skin powder adsorption of Cu2 + in water. The effects of temperature, pH, Cu2 + initial concentration, adsorption time and dosage on the adsorption effect were investigated by single factor experiments. The optimal adsorption conditions were as follows: the temperature was at room temperature, p H was 6.0, the initial concentration of Cu 2+ was 20 mg / L, the adsorption time was 20 min, and the dosage was 0.15 g / 50 m L. Under these conditions, the adsorption rate can reach more than 60%. Thermodynamic and kinetic experiments show that the adsorption is in accordance with the Langmuir isothermal adsorption model and quasi-second-order kinetic model.