Decolorization Kinetics of Sludge Protein Solution by ~（60）Coγ-Ray Irradiation/H_2O_2 Oxidation

In order to carry out decolorization, sludge protein solution, a dark brown close to black solution from activated sludge, was subjected to ⁶⁰Co γ-ray irradiation in the presence of hydrogen peroxide. UV/Vis spectrophotometric method was used to investigate the effect of H2O2 on the coloration apparent kinetics and rate constants of sludge protein solution under γ-ray irradiation. In addition, the effects of irradiation dose, initial sludge protein solution concentration, and pH value on the decolorization efficiency of sludge protein solution were studied. Results showed that the decolorization apparent kinetics of sludge protein solution was a first-order reaction. The solution decolorization percentage increased with the increase of irradiation dose or the decrease of initial sludge protein solution concentration. The examination results of pH value showed that the sludge protein solution could be more efficiently decolorized in alkaline media than in acid media. Moreover, sensory evaluation and foamability analysis indicated that irradiated samples under H2O2 oxidation showed better sensory score and foamability.     

Experimental Study on Decolorization and Degradation of Reactive Brilliant Red X—3B in a White Rot Fungal Biofilm Reacor

Experimental results of an azo dye(reactive brilliant red X-3B,RBR X-3B) decolorization and degradation in a white rot fungal biofilm reactor were introduced and discussed.The fungal biofilm reactor is highly potential for dye decolorization and degradation with the highest decoloring rate of 95% within 96 hours reaction time at initial pH 4.5 under high nirogen level (HN) (24mmol/L ammonium tartrate)condition.Experimental conditions.such as nutrient nitrogen levels in reaction mixture and initial pH,significantly affected dye decolorization and degradation.Effluents from this bioilm reactor can be well treated to meet the discharging requirements by use of chemical flocculation.RBR X-3B was first absorbed onto fungal biomass and then degraded gradually,The SH-13 fungus monopolized the biofilm throughout the experiments,though the reactor was exposed to open air for 4 months.     

沸石的改性及其对垃圾渗滤液的脱色研究

采用十六烷基三甲基溴化铵（CTAB）和壳聚糖对沸石进行改性,并考察了改性沸石对垃圾渗滤液的脱色性能。结果表明：通过改性,沸石的脱色能力明显得到改善,CTAB改性效果优于壳聚糖。用浓度为10％的壳聚糖和CTAB溶液修饰沸石,在垃圾渗滤液的初始pH调为7-8,改性沸石用量为4．0g／100mL的条件下,其对垃圾渗滤液的脱色率分别达到74-3％和81．5％。     

钛酸铅的制备及光催化活性

用混合氧化物法制备钙钛矿型复合氧化物ＰｂＴｉＯ３，提出较合适的制备条件。制得的ＰｂＴｉＯ３纯度高，颗粒均匀，细度较好．在ＰｂＴｉＯ３悬浮水溶液中染料的光催化脱色率超过９０％。     

两种固定化方法对活性艳蓝KN-R的脱色比较研究

采用海藻酸钙和聚丙烯酰胺两种固定化材料对青霉菌进行固定化，分别考查了在不同温度、pH、转速、培养时间、染料浓度等条件下对活性艳蓝KN-R的脱色影响。实验结果表明，两种固定化青霉菌最适条件均为：培养温度30℃，pH=4．0，转速为150r／min；海藻酸钙固定化小球培养时间为48h，聚丙烯酰胺培养时间58h；染料浓度对脱色率有一定的影响。海藻酸钙固定化小球比聚丙烯酰胺固定化块状颗粒具有较好的脱色效果。两种固定化青霉菌经多次脱色后能重复使用。     

红霉素发酵液大孔树脂法脱色研究

本文考察了大孔树脂对红霉素发酵液的脱色作用,详细研究了工艺条件对树脂脱色能力的影响。实验结果表明,在室温下,以1.0BV/hr的流速进行吸附时,D293树脂对红霉素发酵液具有良好的脱色效果,处理量为10BV时,脱色率为68%;并对树脂再生条件作了研究。     

超声催化氧化法对罗丹明B溶液的脱色研究

采用US／Cu^2＋／H2O2体系,超声催化降解罗丹明B模拟废水溶液。考察了超声功率、超声频率、超声时间、初始pH值、H2O2的用量、CuSO4的投加量以及罗丹明B溶液的初始浓度对脱色率的影响。通过正交实验,得出了主次因素,并得出了最佳反应条件。还对单独使用H2O2、H2O2／CuSO4体系,单独使用超声技术以及US／H2O2体系的处理效果进行了分析。     

对乙酰偶氮胂褪色分光光度法测定食盐中碘

研究了在硝酸介质中 ,碘酸根在溴化钾催化作用下氧化对乙酰偶氮胂使其褪色的最佳条件。建立了测定微量碘的方法。λmax=530nm,ε530=1.95×105L·mol-1·cm-1 ,碘酸根在0～8μg/10ml范围内符合比耳定律。方法可用于食盐中微量碘的测定     

几种离子对光催化降解罗丹明B的影响

采用罗丹明B作为目标降解物,考察了几种离子对光催化降解罗丹明B脱色率的影响.结果显示,低浓度的Ca2＋和Al3＋对罗丹明B的脱色率影响不明显,但是当它们的浓度增加到一定值后,则脱色率明显下降;当Fe3＋的浓度为0.2 ～0.5 mmol·L-1时,其对光催化降解罗丹明B有一定的促进作用,继续增加Fe3＋的浓度,反而起到明显的抑制作用;Cu2＋对光催化降解罗丹明B具有显著的抑制作用;Na＋、Cl-、NO3-、SO42-对光催化降解的影响均不明显,有些离子的影响机制有待进一步研究.     

染料脱色菌青霉X5菌株的固定化及特性研究

采用海藻酸钙加活性炭的方法对一株染料脱色优势菌青霉X5进行固定化，并进行固定化菌的一般性质实验，特进行所需4种材料的最佳组合的正交试验，结果表明．四者合适比例为海藻酸钠(2％)，CaCl2(3％)，活性炭(2．5％)，菌量为40％，此法制得凝胶小球机械强度较好，经久耐用．固定化青霉X5脱色的最佳条件为：脱色时间为12h，培养温度为20℃，pH为3．0，染料浓度对菌的脱色有一定的影响．固定化小球可重复使用5次，5次后染料的脱色率为76．74％．