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摘要：用小麦麸皮、杏鲍菇废菌糠和金针菇废菌糠吸附模拟废水中孔雀石绿、藏红T、亚甲基蓝和苋菜红染料，研究了溶液的pH值、吸附剂投加量、染料初始浓度、吸附温度和吸附时间的吸附效果。结果表明：原料小麦麸和两种废菌糠是具有高吸附率的廉价吸附剂，其对染料的吸附率达到 98%以上；在改变pH值时，三种吸附剂对四种典型染料的吸附效果不显著；吸附剂投加量增加时，吸附率不断增加并逐渐趋于饱和；随着染料初始浓度的改变，吸附剂对染料的吸附率逐渐下降；温度的上升会使吸附剂对染料的吸附下降，吸附剂对染料的吸附等温线符合Langmuir吸附模型；随着吸附时间的增加，吸附剂对染料的吸附增加，并逐渐趋于饱和，吸附动力学能够很好的符合二级动力学模型，并计算了相应的吸附动力学参数。本论文的研究结果为杏鲍菇和金针菇菌糠的资源化提供了崭新的思路，并最终实现以废治废。56794
毕业论文关键词：菌糠；生物吸附剂；染料；吸附等温线；吸附动力学
Abstract: Using Wheat bran, Flammulina velutipes waste fungus chaff and Pleurotus eryngii waste fungus chaff sorption to Malachitc green, Safranine T, Methylene blue and Amaranth in simulated dye wastewater was investigated. The influences of the pH value, adsorbent amount, the initial concentration of dyes solution, adsorption temperature and adsorption time effect were studied, and also the adsorption kinetics and the adsorption thermodynamics were discussed. The results indicated that the raw material wheat bran and two types of waste substrate were cheap adsorbent with high adsorption rate and maximum adsorption rate of dyes was reach to 98%. It was not significant effect that three kinds of adsorbent for four kinds of typical dye adsoeption with changing the pH value. The adsorption rate increased and gradually tends to saturation with the adsorbent amount increasing. As the initial dye concentration changed, the adsorption rate gradually decreased. The adsorption ability was descended with raising temperature, the equilibrium adsorption data fitted well with the Langmuir isotherm. The adsorption ability was increased with raising time, and gradually tend to be saturated, the adsorption kinetics of the dyes could be well described by the second order kinetics model, the corresponding adsorption kinetics parameters were calculated. The results of this paper for Mushroom waste fungus chaff resource provide a new train of thought, treated and eventually.
Key words: Fungus Chaff; Biological adsorbent; Dye; Adsorption isotherm; Adsorption kinetics
目 录
1. 前 言 5
1.1 吸附剂吸附染料废水的现状 5
1.2 农作物作为吸附剂的研究进展 6
1.3 食用菌菌糠作为生物吸附剂的研究 6
1.4 有机溶剂染料的简介 7
1.5 实验思路设计 8
2．材料与方法 9
2.1 实验仪器 9
2.2 实验材料 9
2.3实验方法 9
2.3.1 吸附剂对不同pH值染料的吸附 10
2.3.2吸附剂投加量对染料的吸附 10
2.3.3吸附剂对染料不同温度的吸附 10
2.3.4等温吸附实验 10
2.3.5吸附剂对染料不同时间的吸附 11
2.3.6吸附动力学实验