含TCMTB杀菌灭藻剂的研究与应用

GD-423是以TCMTB为主成分的新型杀菌灭藻剂,该杀菌剂对循环冷却水中的铁细菌、亚硝化菌、真菌特别有效。试验和应用结果表明:GD-423具有高效广谱、杀生速度快的特点。     

2-硫氰基甲基硫代苯并噻唑在工业水处理中的应用

作者介绍了2－硫氰基甲基硫代苯并噻唑（TCMTB）在工业水处理中用作杀菌灭藻剂的研究概况,并对其开发应用提出了一些建议。     

杀菌灭藻剂SG—805药效评定及应用前景

介绍了异噻唑啉酮型杀菌灭藻剂SG-805的性质、杀菌机理,及其杀菌效果试验。结果表明,SG-805杀菌效果良好,是一种广谱、高效低毒的杀菌灭藻剂,可推广应用。     

HB－912杀菌灭藻剂的研究与应用

针对氧化型杀菌灭藻剂价格高、杀菌灭藻效率低的问题，以叔胺和氯化苄为原料，研制出一种低毒高效非氧化型杀菌灭藻剂ＨＢ－９１２，并在工业循环冷却水系统得到了广泛的应用，效果良好。     

季铵盐杀菌灭藻剂控制工业循环冷却水中的藻类生长

本文在收集到的国内外十四种杀菌灭藻剂的基础上,对经过筛选获得的具有高效低毒、强剥离作用的三种季铵盐杀菌灭藻剂进行了静态实验研究,发现这三种季铵盐杀菌灭藻剂与NsClO配合使用,具有协同效应,用量少,效率高。     

季铵化腐植酸的合成及其性能的研究

合成了季铵化腐植酸水处理剂,并对其杀菌灭藻、阻垢、缓蚀性能进行了评价。结果表明：季铵化腐植酸的杀菌灭藻性能得到很大提高,在药剂质量浓度为３０－４０ｍｇ／Ｌ时,可与洁尔灭的杀菌灭藻性能相媲美,同时,改性后,腐植酸的阻垢、缓蚀性能也得到较大幅度的改善。     

杀菌剂杀灭细菌孢子的环境条件的初步探讨

为了有效地控制工业循环水系统中的菌藻的危害,往往要投加杀菌灭藻剂。在长期使用一种杀菌剂后,水中微生物产生了耐药性,因而降低了药物的杀菌灭藻效果。目前使用的杀菌灭藻剂虽对微生物的营养细胞具有较高的杀伤作用,但对细菌的芽孢(即孢子)的杀伤作用就较低。我们在筛选杀菌灭藻剂的试验中,曾测定了β—氨基酮对菌藻类的作用,证明它具     

新型阳离子水处理剂的合成与应用

以腐植酸为原料合成了阳离子生物质水处理剂,并对其杀菌灭藻、阻垢、缓蚀性能进行了评价。结果表明,阳离子生物质的杀菌灭藻性能得到很大提高,在药剂质量浓度为20~30mg/L时,可与癸甲氯铵的杀菌灭藻性能相媲美,同时阻垢、缓蚀性能也得到较大幅度的改善。     

二氧化氯在循环冷却水中的应用

本文介绍了ＣｌＯ２作为杀菌灭藻剂的工艺机理,在工业循环水中的杀菌灭藻效果,并对其进行经济性比较。     

新型阳离子水处理剂的合成与应用

本文通过实验合成了阳离子生物质水处理剂,并对其杀菌灭藻、阻垢、缓蚀性能进行了评价。结果表明,阳离子生物质的杀菌灭藻性能得到很大提高,在药剂质量浓度为20～30mg/L时,可与癸甲氯铵的杀菌灭藻性能相媲美。同时,改性后,生物质的阻垢、缓蚀性能也得到较大幅度的改善。     

分散剂对纳米四氧化三铁磁流体稳定性的影响

通过球磨手段,经表面活性剂表面处理颗粒,制备稳定分散纳米四氧化三铁磁性液体。选择表面活性剂GD-01、GD-02和GD-03,研究了溶液pH、球磨时间和表面活性剂用量对磁性液体分散性的影响,采用红外光谱分析仪（FT-IR）和高分辨透射电子显微镜（HRTEM）表征磁性液体中的颗粒。结果表明： GD-02的最佳pH为4.5,GD-01和GD-03的最佳pH为2.5,最佳球磨时间皆为5 h,最佳表面活性剂为GD-02,其最佳用量为0.5 g左右,此时颗粒表面形成稳定的吸附双电层结构,通过静电位阻和空间位阻作用,阻止颗粒团聚,制得分散性能很好的纳米磁性液体。     

GD-102色谱仪在生产中的巧妙应用

通过对GD-102色谱仪气路的改造,使该色谱仪既满足日常生产时分析的需要,又能满足更换催化剂时期特殊生产分析的需要。     

航空器用单组分RTV硅橡胶胶粘剂性能研究

研究了单组分室温硫化(RTV)硅橡胶胶粘剂ND-704及GD-913的室温粘合性能、耐油性能及高低温循环性能。结果表明,经过耐油试验及高低温循环试验后,2种胶粘剂室温粘合性能均下降;胶粘剂耐润滑油性能最好、液压油次之、燃油最差,其中ND-704不耐燃油。试样破坏形式为由内聚破坏转变为粘附破坏;经过高低温循环试验后,2种胶的剥离强度均有所降低,破坏形式为混合破坏。在各种状态下,GD-913胶粘剂试样剥离强度均高于ND-704,可用于航空领域。     

Barrier effect of flame retardant systems in poly(methyl methacrylate): Study of the efficiency of the surface treatment by octylsilane of silica nanoparticles in combination with phosphorous fire retardant additives

In this work, flame retardant systems comprising ammonium polyphosphate (AP423) and hydrophilic (A200) or hydrophobic (R805) nanometric silica were incorporated into PMMA. The following techniques were performed to detail the fire behaviour of the composites: mass loss cone calorimetry, pyrolysis‐combustion flow calorimetry, pyrolysis‐gas chromatography–mass spectrometry, thermogravimetric analysis, X‐ray diffraction analysis, Fourier transform infrared spectroscopy and microscopic observations. The best fire behaviour was obtained with the surface‐treated silica in the presence of AP423. The formation of a new crystalline phase from the interactions between AP423 and R805 silica and a strong barrier effect due to a layered residue were the main modes of action of this system. Moreover, we have shown that the difference between the AP423 + R805 and AP423 + A200 systems was due to poor dispersion of the silica into the PMMA matrix in the latter formulation. Copyright © 2011 John Wiley & Sons, Ltd.     

CD-4MCu双相不锈钢在稀硫酸介质中的腐蚀磨损行为

用失重法测定了固溶处理态和固溶+时效处理态CD-4MCu双相不锈钢在稀硫酸介质中的腐蚀磨损速率。结果表明,CD-4MCu在固溶态时硬度低,耐腐蚀磨损性能差;在固溶+时效处理态时硬度高,耐腐蚀磨损性能好。介质温度和浓度升高,CD-4MCu双相不锈钢腐蚀及磨蚀增加,腐蚀磨损交互作用增大。     

粘稠发酵产物后处理过程研究

对HL-423微生物多糖发酵液的后处理工艺进行了实验研究,采用气流干燥、拉丝干燥、萃取、微波干燥等方法对料液浓缩并测试其复溶性能,确定了合适的后处理工艺,对技术经济的可行性作了评价。     

Reduction of nitric oxide with activated PAN fibres

The reductive removal of nitric oxide from flue gases by reaction with polyacrylonitrile-based active carbon fibres (PAN-ACF) activated with sulphuric acid has been studied at 423–632 K, using a circulating flow reactor. Nitric oxide (0.67 mmol) was completely removed via reduction with 1 g activated carbon under optimum conditions in 210 and 60 min at 423 and 623 K, respectively. N₂ was formed as NO was removed. Some oxygen remained on the carbon surface at 423 K, but was desorbed as CO or CO₂ on subsequent heating to 623 K. The bimolecular reaction of NO reduction over PAN-ACF, and the possible active sites of oxygen surface groups are discussed in the light of a kinetic study and a comparison of the fibre activation at different temperatures.     

A combination of ultrasound and oxidative enzyme: sono-biodegradation of phenol

Sonolysis, enzyme treatment, and a combination of the two processes were tested for the degradation of phenol in aqueous medium. With sonolysis alone, 423 kHz ultrasound eliminated phenol molecules through hydroxyl radical reactions. In the presence of hydrogen peroxide, the enzyme horseradish peroxidase (HRP) catalyzed the oxidation of phenol to insoluble polymers which could be separated easily from the solution. In the combined system (HRP, H₂O₂, US-423 kHz) the degradation rate was accelerated, and the color of the solution changed to dark brown without any precipitate formation. The enhancement was more significant in the presence of additives such as polyethylene glycol (PEG). The higher rate induced through the use of ultrasound leads to the reduction of HRP dose requirements, which is of importance for the economic feasibility of this method. The enzyme solution alone did not show any inactivation up to 45 min sonication at 423 kHz. Investigation of phenol removal efficiency was mainly focused on enzyme, phenol and PEG concentrations, as well as the sequence and method of addition of reagents.     

不可逆吸附的存在对ZSM-5分子筛中扩散的影响

<正>不可逆吸附是指在一定条件下,经长时间抽空或吹扫脱附仍脱不出去的那部分吸附质,它们在催化反应中起着十分重要的作用.在沸石分子筛中,由于存在特殊的孔道结构,而使不可逆吸附的作用更大;且可设想,不可逆吸附对其中的扩散将有很大的影响.