绿茶汁澄清工艺的研究

比较池明矾、硅胶、高岭土、碱式氯化铝和聚丙烯酰胺５种物质对绿茶汁的洽效果,发现碱式氯化铝的澄清效果较好;通过Ｌ９（３＾４）正交实验优化,碱式氯化铝澄清绍茶汁适宜的条件为：ＰＨ＝６,用量０．１％和温度１５℃。     

Food-compatible method for the efficient extraction and stabilization of cranberry pomace polyphenols

Cranberry pomace is a byproduct of cranberry processing and is comprised of seeds, skins and stems of the cranberry fruit. While cranberry pomace contains beneficial polyphenols, including proanthocyanidins and anthocyanins, it is not a palatable source of these compounds and is typically discarded. In this study, we have developed and optimized a method to extract polyphenols from cranberry pomace using aqueous ethanol, a food grade solvent. Biochemical characterization of the pomace extract showed the presence of a broad range of polyphenols also present in cranberry juice concentrate. By co-drying cranberry pomace extract with a protein-rich food matrix, such as soy protein isolate (SPI), we have developed a method to produce a cranberry polyphenol–SPI complex (CBP-SPI) containing 10% cranberry polyphenols. Unlike dried cranberry pomace extract alone, proanthocyanidins, anthocyanins and total polyphenols were found to be highly stable at 37 °C in the CBP-SPI powder. The extraction and stabilization of cranberry pomace polyphenols using SPI provides an innovative approach for utilizing pomace in the development of novel food ingredients.     

PAC及其复合物电荷密度的影响因素分析

研究了聚合氯化铝(PAC)的电荷密度与盐基度的关系、PAC及其复合物电荷密度的影响因素,并用PAC及其复合物作为施胶沉淀剂,以PAC及其复合物改性阳离子松香胶和AKD为施胶剂,在中碱性条件下进行施胶。结果表明,PAC及其复合物电荷密度对施胶有较大影响,在加入相同电荷量的PAC及其复合物时,高电荷密度PAC复合物比高纯PAC获得更高的施胶pH值和更满意的施胶度,PAC及其复合物改性阳离子松香胶对AKD的施胶有增效作用。     

稀土复合混凝剂的制备及其在制革废水中的应用

新型稀土复合混凝剂PACRES是一种以聚合氯化铝为主要成分 ,并含有稀土、硫等元素的复合混凝剂。通过试验 ,确定最佳合成工艺条件 ,稀土引入量控制在混凝剂中Al2 O3 含量的 1.5%～ 8%。将它应用于制革废水处理 ,可提高处理效果 ,使废水的色度和COD有较高的去除率 ,同时用量比PAC降低 50 %以上。     

三元助留体系对高得率浆助留助滤性能的研究

研究了阳离子瓜尔胶单元、二元、三元助留助滤体系在高得率浆抄造上的应用.并考察了PAC用量、电导率、pH值对PAC-阳离子瓜尔胶一膨润土三元体系对高得率浆助留助滤性能的影响.结果表明,三元体系较单元和二元体系对高得率浆具有更好的助留助滤作用,当PAC用量为1%,阳离子瓜尔胶用量为O.3%,膨润土加入量1%时,三元体系对高得率浆的留着率达到93.6%、滤水时间可达15s.     

聚合氯化铝用于桉木化机浆中性施胶

研究了在桉木化机浆中聚合氯化铝（ＰＡＣ）作施胶沉淀剂的阴离子分散松香胶中性施胶的影响,淀粉、阳离子聚丙烯酰胺（ＣＰＡＭ）对中性施胶效果的作用以及ｐＨ值对以硫酸铝或ＰＡＣ作施胶沉淀剂进行施胶的影响。根据实验结果得出适宜的中性施胶工艺条件,淀粉和ＣＰＡＭ都具有较好的助施胶效果。ＣＰＡＭ分子量越大施胶效果越好。ｐＨ值为７．０时,明矾－阴离子分散松香胶（ＤＲ）施胶系统的施胶度已很小,而 ＰＡＣ－ＡＤＲ系统仍保持较高的施胶度。     

Ecotoxicological evaluation of three tertiary wastewater treatment techniques via meta-analysis and feeding bioassays using Gammarus fossarum

Advanced treatment techniques, like ozone, activated carbon and TiO₂ in combination with UV, are proposed to improve removal efficiency of micropollutants during wastewater treatment. In a meta-analysis of peer-reviewed literature, we found significantly reduced overall ecotoxicity of municipal wastewaters treated with either ozone (n = 667) or activated carbon (=113), while TiO₂ and UV was not yet assessed. As comparative investigations regarding the detoxification potential of these advanced treatment techniques in municipal wastewater are scarce, we assessed them in four separate Gammarus-feeding trials with 20 replicates per treatment. These bioassays indicate that ozone concentrations of approximately 0.8 mg ozone/mg DOC may produce toxic transformation products. However, referred effects are removed if higher ozone concentrations are used (1.3 mg ozone/mg DOC). Moreover, the application of 1 g TiO₂/l and ambient UV consistently reduced ecotoxicity. Although activated carbon may remove besides micropollutants also nutrients, which seemed to mask its detoxification potential, this treatment technique reduced the ecotoxicity of the wastewater following its amendment with nutrients. Hence, all three advanced treatment techniques are suitable to reduce the ecotoxicity of municipal wastewater mediated by micropollutants and may hence help to meet the requirements of the European Water Framework Directive.     

酸溶二步法制备聚合氯化铝的试验研究

以铝矾土和铝酸钙粉为原料,在实验室采用酸溶二步法制备液体聚合氯化铝产品（PAC）,通过实验考查制备工艺的主要影响因素,找到最佳生产条件：100～110 mL浓度为20%盐酸中,投加氧化铝含量51.22%的铝酸钙粉12 g和氧化铝含量26.50%的铝钒土15 g;最佳温度范围为100～110℃;最佳反应时间在7 h左右。在此工艺参数控制条件下,制备出液体聚合氯化铝产品的盐基度为83%,氧化铝含量为13.4%,符合GB 15892—2009《生活饮用水用聚氯化铝》的指标。     

铟置换含铝废液制备聚合氯化铝的工艺和应用研究

以铟生产厂含Al2O3为3.69%的AlCl3废液为原料,采用直接中和法制备含钠的聚合氯化铝(PAC)溶液,研究了制备PAC的优化工艺条件、各因素对PAC性能和在处理蔗渣造纸中段废水时混凝效果的影响规律.结果表明,pH和熟化时间足主要影响因素,制备PAC时优化的工艺条件为:pH为3.0,反应温度为70℃,搅拌反应时间为...     

基于APAX5520的模拟训练系统

介绍某型舰艇动力模拟训练系统的组成与基本工作原理,阐述I／O设备的选型依据,介绍APAX5520CE的基本性能,及其在模拟器中的硬件配置方法和主要软件的编制思想。实践证明,基于APAX5520CE所设计的模拟训练系统运行稳定、扩展灵活。完全满足装备训练需求。