味精生产中离子交换废水的预处理技术研究

采用电化学法、吹脱法和化学沉淀法对味精废水中离子交换废水的预处理进行了试验研究。结果表明：以铸铁屑为主的铁碳法，当HRT为2h时，pH可从1．97升至4．88，可大大减少后续中和吹氨所需石灰量，Fe-C还原对作COD、氨氮和提高可生化性无明显效果。pH中和至9．5－10，鼓气量在100m^3/h左右，水温55℃左右，经8h，可将原水NH3－N从12000mg/L左右降至4000mg/L左右，脱除率65％以上。磷酸氨镁法去除废水中NH4^ －N，在n（Mg^2＋）：n（PO4^3-）：n（NH4^ －N）＝1：1：1（物质的量比）时，随废水pH升高，NH4^ －N去除率逐步增大，pH为10时其去除率达到54％。     

伯胺N1923对螺旋霉素和红霉素的萃取性能研究（1）

研究了伯胺N1923萃取剂对螺旋霉素和红素的萃取性能,实验结果表明它具有萃取率高、适用pH范围较大、不乳化、易分相、易反萃、用量不且可多次循环使用等优点,显示出了作为工业萃取剂的良好特性。适宜的萃取条件分别为对螺旋霉素用5．0％N1923,pH＝9．56,O／A＝1：1（V／V）,萃取率为90．8％;萃取红霉素用7．5％N1923,pH＝9．50,O／A＝1：1,萃取率为92％。     

专利实例

镀锌及锌合金两则97201镀锌添加剂本专利介绍镀锌或锌合金的酸性溶液中所用的添加剂。该添加剂为混合物，含有：（a）聚（N-乙烯基-α-吡咯烷酮）；（b）RS（R’O）。H或S－[（R’O）nH]2，式中，R为H或烷基（C原子数≤24个），每一个R’为2或3个C原子的不同烯烃，n为1～100的不同整数。欧洲专利EP545089（1992．11）97202钢上电镀Zn－Cr合金本专利介绍在钢上电镀Zn－Cr合金的工艺。溶液为酸性溶液，含有：Zn2＋离子和Cr（Ⅲ）离子，其摩尔浓度比为0．1＜Cr3＋／（Zn2＋＋Cr3＋）≤0．9，总量为≥0．5mol／L；0．1～30g／L非离…     

络合萃取法处理β-萘磺酸钠工业废水

采用络合萃取法,以ＴＯＡ为萃取剂、煤油为稀释剂处理β－萘磺酸钠工艺废水。结果表明,当ＰＨ＝０．５－１．０,废水：萃取剂：稀释剂＝１００：１０：４０时,废水经二级萃取ＯＣＤｃｒ去经达９８．０％。将二级萃余水相用Ｈ２Ｏ２－Ｆｅ＾２＋氧化后,出水ＣＯＤｃｒ降至１００ｍｇ／Ｌ以下,可达标排放。     

HPLC法测定2—羟基喹恶啉

建立了2－羟基喹恶啉的高效液相色谱分析方法，流动相：pH=5,甲醇＋水（V／V）＝30＋70，在UV－280nm下用外标法进行测定，方法精度为0．25，变异系数为0．25％，回收率在99．6％－100．9％之间。     

β修正—MTB新光度法测定微量铅

钢铁及金属材料中均含有铅（Pb）。在pH5．5～6．5HAc—NaAc溶液中，Ph2＋与CTB反应，显色液由黄色变红色［1］。本文研究β修正光度法测定痕量铅，该方法灵敏度高，Aβ与Pb2＋浓度（x）有良好线性关系。实验表明，RSD≤2．2％，加标回收率91．7％～109％．方法最低检测量为0．4μg／25ml。1实验部分1．1β修正光度分析理论在pH6HAc－NaA溶液中，MTh3和外一MT13显色液吸收示意曲线如图1。c曲线是Ph－MW显色液中剩余MTh独立显色光谱。实际上Ph－MTh络合产物在其最大吸收波长（hax）处的吸光度为MO＝A占而不是MN＝AA．AP称p…     

N-(2-氰基乙基)丁胺的合成研究

以甲苯和异丙醇的混合溶液作溶剂，正丁胺与丙烯腈反应合成N－（2－氰基乙基）丁胺；研究了溶剂种类和用量，原料配比，反应温度及时间对正丁胺转化率、N－（2－氰基乙基）丁胺选择性、单程总收率的影响；最佳工艺条件为：溶剂为混合溶剂[m(甲苯）：m(异丙醇）＝2．0]，m（溶剂）：m(正丁胺）＝4．0－5．0；n(丙烯腈）:n(正丁胺）＝1．0，反应温度为50－60℃，丙烯腈滴加时间45min，保温反应时间90min；单程总收率可达84．3％，产品纯度可达98．0％以上。     

给水管网水中氯胺消毒的氨氮释放规律

研究了对不同氯氨比条件下氯胺释放氨氮的规律,考察了pH、有机物浓度、亚硝酸盐浓度和Fe2＋对氯胺释放氨氮规律的影响。结果表明随着氯氨比的增加氨氮释放量降低,Cl∶N＝3∶1和Cl∶N＝5∶1的氯胺释放氨氮的量分别为0．91和0．35 mg/L;pH对氯胺释放氨氮有一定影响,氨氮浓度随着pH升高而降低;有机物含量和亚硝酸盐浓度对氯胺释放氨氮有显著影响,随着有机物和亚硝酸盐含量的增加,氯胺释放的氨氮浓度增加;管网中的 Fe2＋也会加快氯胺释放氨氮的速度。     

曝气微电解-双氧水工艺处理炼厂焦化废水

采用曝气微电解－双氧水工艺处理炼厂焦化废水,考察了废水pH、反应时间、双氧水投加量以及空气流量等因素对废水COD、NH3－N2、除率和BOD／COD比值的影响。结果表明,在pH5～7、铁稻用量100g／L、双氧水（浓度为30％）用量2mL／L,反应时间1．5h、空气流量60L／h（实验废水量150mL）的条件下,COD、NH3－N的去除率分别为37.6％和299％,BOD／COD比值从0．25提高到0．66,废水可生化性提高。     

钛白废酸中钪的提取工艺改进

研究旨在改进现有二（2-乙基己基）磷酸（P204）-磷酸三丁酯（TBP）煤油体系提取钛白废酸中钪的工艺流程，降低洗涤操作费用，提高钪的富集比。研究了采用二次萃取富集、一次水解除杂、二次草酸提纯工艺提取钛白废酸中的钪。确定了最佳工艺条件：有机相的最佳体积分数为25％P204＋4％，TBP＋61％煤油；2mol／L氢氧化钠＋1．5mol／L氯化钠反萃；用盐酸调节反萃液pH为1，加热水解除钛；调水解液酸度（氢离子浓度）为7mo]／L，二次萃取除杂。在最佳条件下，可使钪与钛质量比由原废酸中的1：136富集到20：1。与现有工艺相比，省去了硫酸洗钛步骤，降低了提钪成本。     

Insect antifeedant properties of anthranoids from the genusVismia

Vismiones and ferruginins, representatives of a new class of lypophilic anthranoids from the genusVismia were found to inhibit feeding in larvae of species ofSpodoptera, Heliothis, and inLocusta migratoria.     

Methyl 2,4,6-decatrienoates Attract Stink Bugs and Tachinid Parasitoids

Halyomorpha halys (Stål) (Pentatomidae), called the brown marmorated stink bug (BMSB), is a newly invasive species in the eastern USA that is rapidly spreading from the original point of establishment in Allentown, PA. In its native range, the BMSB is reportedly attracted to methyl (E,E,Z)-2,4,6-decatrienoate, the male-produced pheromone of another pentatomid common in eastern Asia, Plautia stali Scott. In North America, Thyanta spp. are the only pentatomids known to produce methyl 2,4,6-decatrienoate [the (E,Z,Z)-isomer] as part of their pheromones. Methyl 2,4,6-decatrienoates were field-tested in Maryland to monitor the spread of the BMSB and to explore the possibility that Thyanta spp. are an alternate host for parasitic tachinid flies that use stink bug pheromones as host-finding kairomones. Here we report the first captures of adult and nymph BMSBs in traps baited with methyl (E,E,Z)-2,4,6-decatrienoate in central Maryland and present data verifying that the tachinid, Euclytia flava (Townsend), exploits methyl (E,Z,Z)-2,4,6-decatrienoate as a kairomone. We also report the unexpected finding that various isomers of methyl 2,4,6-decatrienoate attract Acrosternum hilare (Say), although this bug apparently does not produce methyl decatrienoates. Other stink bugs and tachinids native to North America were also attracted to methyl 2,4,6-decatrienoates. These data indicate there are Heteroptera in North America in addition to Thyanta spp. that probably use methyl 2,4,6-decatrienoates as pheromones. The evidence that some pentatomids exploit the pheromones of other true bugs as kairomones to find food or to congregate as a passive defense against tachinid parasitism is discussed.     

2005～2006年国外塑料工业进展

收集了2005年7月～2006年6月国外塑料工业的相关资料，介绍了2005—2006年国外塑料工业的发展情况。提供了世界塑料产量、消费量及全球各类树脂生产量以及各国塑料制品的进出口情况。作为对比，介绍了中国塑料的生产情况。按通用热塑性树脂（聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂）、工程塑料（聚酰胺、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚）、通用热固性树脂（酚醛、聚氨酯、不饱和树脂、环氧树脂）、特种工程塑料（聚苯硫醚、液晶聚合物、聚醚醚酮）的品种顺序，对树脂的产量、消费量、供需状况及合成工艺、产品开发、树脂品种的延伸及应用的扩展作了详细的介绍。     

2007～2008年世界塑料工业进展

收集了2007年7月～2008年6月世界塑料工业的相关资料,介绍了2007～2008年国外塑料工业的发展情况,提供了世界塑料产量、消费量及全球各类树脂的需求量及产能情况.按通用热塑性树脂(聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂)、工程塑料(尼龙、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚)、特种工程塑料(聚苯·硫醚、液晶聚合物、聚醚醚酮)、通用热固性树脂(酚醛、聚氨酯、不饱和聚酯树脂、环氧树脂)不同品种的顺序,对树脂的产量、消费量、供需状况及合成工艺、产品应用开发、树脂品种的延伸及应用的进一步扩展等技术作了详细介绍.     

Inorganic/organic nanocomposite coatings: The next step in coating performance

Inorganic/organic hybrid materials have considerable promise and are beginning to become a major area of research for many coating usages, including abrasion and corrosion resistance. Our primary approach is to prepare the inorganic phase in situ within the film formation process of the organic phase. The inorganic phase is introduced via sol-gel chemistry into a thermosetting organic phase. By this method, the size, periodicity, spatial positioning, and density of the inorganic phase can be controlled. An important aspect of the inorganic/organic hybrid materials is the coupling agent. The initial task of the coupling agent is to provide uniform mixing of the oligomeric organic phase with the sol-gel precursors, which are otherwise immiscible. UV-curable inorganic/organic hybrid systems have the advantages of a rapid cure and the ability to be used on heat sensitive substrates such as molded plastics. Also, it is possible to have better control of the growth of the inorganic phase using UV curing. It is our ultimate goal to completely separate the curing of inorganic and organic phases to gain complete control over the morphology, and hence optimization of “all” the coating properties. Thus far, it has been found that concomitant UV curing of the inorganic and organic phases using titanium sol-gel precursors afforded nanocomposite coatings which completely block the substrate from UV light while maintaining a transparent to visible light. Also, it has been found that the morphology of the inorganic phase is highly dependent on the concentration and reactivity of the coupling agent. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004, in Chicago, IL.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Some Large Wood-Boring Beetles in Southeastern USA

Ethanol and α-pinene were tested as attractants for large wood-boring pine beetles in Alabama, Florida, Georgia, North Carolina, and South Carolina in 2002–2004. Multiple-funnel traps baited with (−)-α-pinene (released at about 2 g/d at 25–28°C) were attractive to the following Cerambycidae: Acanthocinus nodosus, A. obsoletus, Arhopalus rusticus nubilus, Asemum striatum, Monochamus titillator, Prionus pocularis, Xylotrechus integer, and X. sagittatus sagittatus. Buprestis lineata (Buprestidae), Alaus myops (Elateridae), and Hylobius pales and Pachylobius picivorus (Curculionidae) were also attracted to traps baited with (−)-α-pinene. In many locations, ethanol synergized attraction of the cerambycids Acanthocinus nodosus, A. obsoletus, Arhopalus r. nubilus, Monochamus titillator, and Xylotrechus s. sagittatus (but not Asemum striatum, Prionus pocularis, or Xylotrechus integer) to traps baited with (−)-α-pinene. Similarly, attraction of Alaus myops, Hylobius pales, and Pachylobius picivorus (but not Buprestis lineata) to traps baited with (−)-α-pinene was synergized by ethanol. These results provide support for the use of traps baited with ethanol and (−)-α-pinene to detect and monitor common large wood-boring beetles from the southeastern region of the USA at ports-of-entry in other countries, as well as forested areas in the USA.