TiO2／浮石复合材料降解印染废水的研究

以长白山天然浮石为载体,采用溶胶-凝胶法制备TiO2光催化剂,并用制备的光催化剂处理罗丹明B溶液和印染废水．研究了制备TiO2／浮石光催化剂时涂覆次数和光照时间、氧化剂及被处理液pH值对罗丹明B和工业废水降解效果的影响．结果表明：当用焙烧温度为500℃、涂覆4次制备的TiO2／浮石光催化剂处理罗丹明B10h时,脱色率可达76．67％;当印染废水pH值为2,再加入30％H2O2时,印染废水脱色率可达到89．10％．     

Electrocoagulation of a synthetic textile effluent powered by photovoltaic energy without batteries: Direct connection behaviour

The feasibility of the use of an electrocoagulation system (EC) directly powered by a photovoltaic (PV) array has been demonstrated. The model pollutant used was a reactive textile dye Remazol Red RB 133. It has been proved that PV array configuration is a factor of great influence on the use of the generated power. The optimum PV array configuration must be reshaped depending on the instantaneous solar irradiation. A useful and effective methodology to adjust the EC–PV system operation conditions depending on solar irradiation has been proposed. The current flow ratio, J_v, is established as the control parameter.     

鹅血酶解液活性炭脱色效果的研究

本实验以鹅血为原料进行酶解,利用活性炭对酶解液进行脱色效果的研究。结果表明,活性炭用量为3·5%,pH为4·0,温度为70℃,脱色时间为80分钟,鹅血酶解液的脱色效果明显。     

苜蓿浓缩叶蛋白脱色、脱腥工艺研究

通过试剂筛选，以无水乙醇为漫提剂，研究了不同条件对苜蓿浓缩叶蛋白脱色、脱腥的影响，通过正交试验得出了脱色的最佳工艺条件：液固体积质量比6mL：1g，浸提温度85℃；浸提时间4h；浸提级数3级。此工艺参数的确定为苜蓿叶蛋白的脱色、脱腥提供了新方法，提高了苜蓿浓缩叶蛋白在食品中应用的可行性。     

玉米葡萄糖全糖粉制备过程中的糖化及脱色技术研究

本实验以玉米粉为原料,对葡萄糖全糖粉的糖化和脱色工艺进行研究,优化出糖化工艺参数为:糖化温度59℃'时间60h,pH4.8,糖化酶用量300U/g,普鲁兰酶用量0.1ASPU/ml;脱色工艺参数为:活性炭用量3%,温度85℃,时间20min,pH4.6.     

猪血红蛋白抗氧化活性肽的分离及脱色技术研究

为充分挖掘血液蛋白质资源及开发具有保健功能的血液深加工生物制品,本实验以猪血为原料,以猪血红蛋白为研究对象,采用胃蛋白酶在pH1.6,酶底比1.6%,温度40.4℃条件下对猪血红蛋白酶解60min,后采用中空纤维超滤设备(截留分子量分别为10KDa,5KDa和3KDa)对酶解产物进行分离和脱色,获得4组区分物(PHH-Ⅰ∶MWCO>10KDa;PHH-Ⅱ∶10KDa>MWCO>5KDa;PHH-Ⅲ∶5KDa>MWCO>3KDa;PHH-Ⅳ∶MWCO<3KDa)。结果显示,各区分物随分子量的降低其色泽逐渐变浅,区分物PHH-Ⅳ具有最高抗氧化活性,且其接近无色,透明、清澈,感官质量得到了很大提升,在功能性食品、药物及化妆品工业领域极具应用潜力。     

磷酸改性生物炭对包装印刷废水的处理效果

目的用磷酸改性生物炭对包装印刷废水处理,寻找秸秆生物质优化利用新途径。方法生物炭用磷酸改性,通过正交实验找到制备磷酸改性生物炭的最佳工艺条件,并用最佳工艺条件制备磷酸改性生物炭用于处理包装印刷废水;研究磷酸改性生物炭添加量、吸附时间、pH值对包装印刷废水的吸附量、COD去除率和脱色率的影响,结果磷酸对生物炭改性的最佳工艺条件:改性时间为4h,磷酸体积分数为40%,改性温度40℃;磷酸改性生物炭处理包装印刷废水的最佳工艺条件:吸附时间为60 min,pH值为8,磷酸改性生物炭质量浓度为0.3 g/L。结论通过用磷酸来对生物炭改性以提高其对污染物的吸附能力,可用于吸附包装印刷废水中的污染物,用于包装印刷废水的初步处理。     

树脂法同时脱除虫草粗多糖中色素与蛋白质

引入综合吸附效应指数反映树脂的脱色、脱蛋白以及多糖保留能力,并以该效应指数评价了8种树脂对虫草粗多糖的脱色、脱蛋白效果。结果表明,D113树脂具有理想的脱色、脱蛋白效果。在优化的静态吸附工艺条件下,D113脱色率可达79.5%±1.7%,脱蛋白率达82.2%±1.7%,多糖保留率达75.0%±1.8%。对D113树脂的动态吸附性能研究表明,流速为1.5BV/h,树脂床径高比为1∶15,树脂处理量为8.4mg/mL时,D113脱色率为85.1%±1.9%,脱蛋白率为85.0%±2.0%,多糖保留率为80.2%±2.2%。50%乙醇盐酸溶液以12BV/h流速洗脱1h后,树脂再生性能良好。     

Optimization of culture medium composition for manganese peroxidase and tyrosinase production during Reactive Black 5 decolourization by the yeast Trichosporon akiyoshidainum

Decolourization and degradation of the diazo dye Reactive Black 5 was carried out by the yeast Trichosporon akiyoshidainum. A nine-factor Plackett-Burman design was employed for the study and optimization of the decolourization process and production of manganese peroxidase (MnP) and tyrosinase activities. In the present study, 26 individual experiments were conducted and three responses were evaluated. Raising yeast extract concentration significantly enhanced decolourization and MnP production. Carbon and nitrogen sources, glucose and (NH4)2 SO4, showed no significant effect on any response over the concentration range tested. Other culture medium components, such as CaCl2 or MgSO4, could be excluded from the medium formula, as they had no effect on the evaluated responses. Metal ions (Fe, Cu and Mn) showed different effects on decolourization and enzymatic activities. Addition of copper significantly enhanced MnP activity and decreased dye decolourization. On the contrary, iron had a positive effect on decolourization and no effect on enzyme production. Oddly, increasing manganese concentration had a positive effect on tyrosinase production without affecting decolourization or MnP activity. These results strongly suggest that dye decolourization should be regarded as a complex multi-enzymatic process, where optimal medium composition should arise as a compromise between those optimal for each implied enzyme production.     

Zeta电位法优化赤砂糖回溶糖浆絮凝澄清工艺的研究

通过对赤砂糖回溶糖浆絮凝过程中Zeta电位的研究,探讨基于Zeta电位优化回溶糖浆絮凝澄清工艺的可行性.考察了pH、氯化钙、氢氧化钙、絮凝剂用量等对赤砂糖回溶糖浆Zeta的影响规律,分别以Zeta电位、脱色率、浊度为指标,优化最佳工艺条件.结果表明,氢氧化钙量5g/L、阳离子聚丙烯酰胺0.014g/L,最佳工艺Zeta电位达到-3.02mV;氢氧化钙量4g/L、阳离子聚丙烯酰胺0.014g/L,最佳工艺脱色率达到41.95％;氢氧化钙量5g/L、阳离子聚丙烯酰胺0.016g/L,最佳工艺浊度达到865.26.以Zeta电位、脱色率、浊度为指标,优化的最佳工艺条件基本一致,证明以Zeta电位法优化赤砂糖回溶糖浆絮凝澄清工艺具有可行性.由于Zeta电位更能反映澄清絮凝过程的本质,可为澄清剂、絮凝剂的遴选及其最佳用量的确定提供重要的依据.