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    • 1. 发明授权
    • Regeneration of strong-base anion-exchange resins by sequential chemical displacement
    • 通过连续化学位移再生强碱阴离子交换树脂
    • US06448299B1
    • 2002-09-10
    • US09491242
    • 2000-01-25
    • Gilbert M. BrownBaohua GuBruce A. MoyerPeter V. Bonnesen
    • Gilbert M. BrownBaohua GuBruce A. MoyerPeter V. Bonnesen
    • B01J4900
    • B01J49/57
    • A method for regenerating strong-base anion exchange resins utilizing a sequential chemical displacement technique with new regenerant formulation. The new first regenerant solution is composed of a mixture of ferric chloride, a water-miscible organic solvent, hydrochloric acid, and water in which tetrachloroferrate anion is formed and used to displace the target anions on the resin. The second regenerant is composed of a dilute hydrochloric acid and is used to decompose tetrachloroferrate and elute ferric ions, thereby regenerating the resin. Alternative chemical displacement methods include: (1) displacement of target anions with fluoroborate followed by nitrate or salicylate and (2) displacement of target anions with salicylate followed by dilute hydrochloric acid. The methodology offers an improved regeneration efficiency, recovery, and waste minimization over the conventional displacement technique using sodium chloride (or a brine) or alkali metal hydroxide.
    • 利用具有新的再生剂配方的连续化学位移技术再生强碱阴离子交换树脂的方法。 新的第一再生剂溶液由氯化铁,水混溶性有机溶剂,盐酸和水的混合物组成,其中形成四氯铁酸盐阴离子并用于置换树脂上的目标阴离子。 第二再生剂由稀盐酸组成,用于分解四氯铁酸盐并洗脱三价铁离子,从而再生树脂。 替代化学位移方法包括:(1)用氟硼酸盐,硝酸盐或水杨酸盐置换目标阴离子,和(2)用水杨酸盐置换目标阴离子,然后用稀盐酸置换。 与使用氯化钠(或盐水)或碱金属氢氧化物的常规置换技术相比,该方法提供了改进的再生效率,回收率和废物最小化。
    • 3. 发明授权
    • Regeneration of anion exchange resins by catalyzed electrochemical reduction
    • 通过催化电化学还原再生阴离子交换树脂
    • US06358396B1
    • 2002-03-19
    • US09566036
    • 2000-05-08
    • Baohua GuGilbert M. Brown
    • Baohua GuGilbert M. Brown
    • C02F128
    • B01J49/57B01J49/07C02F1/42C02F2101/12C02F2103/06
    • Anion exchange resins sorbed with perchlorate may be regenerated by a combination of chemical reduction of perchlorate to chloride using a reducing agent and an electrochemical reduction of the oxidized reducing agent. Transitional metals including Ti, Re, and V are preferred chemical reagents for the reduction of perchlorate to chloride. Complexing agents such as oxalate are used to prevent the precipitation of the oxidized Ti(IV) species, and ethyl alcohol may be added to accelerate the reduction kinetics of perchlorate. The regeneration may be performed by continuously recycling the regenerating solution through the resin bed and an electrochemical cell so that the secondary waste generation is minimized.
    • 用高氯酸盐吸附的阴离子交换树脂可以通过使用还原剂化学还原高氯酸盐与氯化物的组合和氧化还原剂的电化学还原来再生。 包括Ti,Re和V的过渡金属是用于将高氯酸盐还原成氯化物的优选化学试剂。 使用诸如草酸盐的络合剂来防止氧化的Ti(IV)物质的沉淀,并且可以加入乙醇以加速高氯酸盐的还原动力学。 再生可以通过将再生溶液通过树脂床和电化学电池连续循环来进行,使得二次废物产生最小化。
    • 4. 发明申请
    • SYSTEM FOR MANAGING CONSTRUCTION PROJECT BIDDING
    • 管理施工工程投标制度
    • US20130046647A1
    • 2013-02-21
    • US13210774
    • 2011-08-16
    • Dave RobertsonSharandeep SekhonBaohua GuDariusz Czarkowski
    • Dave RobertsonSharandeep SekhonBaohua GuDariusz Czarkowski
    • G06Q30/08
    • G06Q30/08G06Q10/00
    • A system is disclosed that facilitates construction project bidding, document distribution, and project management over a computer network. The system enables a project supervisor to efficiently transmit new project information and associated construction project files to one or more planroom provider systems. Each planroom provider system may make project information and associated construction project files available for transfer and viewing by one or more potential bidders connected to the planroom provider system over a public or private network. The planroom provider system(s) may provide a reference or link back to the project supervisor system to enable the potential bidder to bid on the construction project once the project information and project files have been reviewed.
    • 公开了一种通过计算机网络进行项目投标,文件分发和项目管理的系统。 该系统使项目主管有效地将新的项目信息和相关的建设项目文件传送到一个或多个计划供应商系统。 每个计划供应商系统可以使项目信息和相关的建设项目文件可供一个或多个通过公共或私人网络连接到计划室提供者系统的潜在投标人进行转移和查看。 一旦项目信息和项目文件被审查,计划供应商系统可以提供参考或链接回项目主管系统,以使潜在投标人能够对施工项目进行投标。
    • 10. 发明授权
    • Functionalized gold surface-enhanced raman scattering substrate for rapid and ultra-sensitive detection of anionic species in the environment
    • 功能化的金表面增强拉曼散射底物,用于环境中阴离子物质的快速和超灵敏检测
    • US07989211B1
    • 2011-08-02
    • US12645017
    • 2009-12-22
    • Baohua GuChuanmin RuanWei Wang
    • Baohua GuChuanmin RuanWei Wang
    • G01N33/00G01N21/65
    • G01N33/182G01N21/658Y10T436/153333Y10T436/173076Y10T436/19Y10T436/193333
    • This invention relates to the development of a new Raman enhancing reagent and a surface-enhanced Raman scattering (SERS) method for rapid and ultra-sensitive detection and identification of perchlorate (ClO4−) and other anions such as technetium (TcO4−), uranium and nitrate in environmental samples. The method involves the synthesis of controlled gold nanoparticles which are modified with amine functional groups such as 2-(dimethylamino)ethanethiol and N,N,N-trimethylaminethiol. These functionalized Au nanoparticles were found to be reactive with perchlorate and other anions and can be used to detect these anions by Raman spectroscopy at ultra low concentrations in complex environmental matrices. This invention overcomes the limitations of currently-available analytical techniques by offering an inexpensive, rapid, ultra-sensitive, and real-time identification and detection of perchlorate and other anions. The technique is not only sensitive but also highly specific because of the unique Raman vibrational bands of perchlorate and other anions.
    • 本发明涉及新型拉曼增强试剂和表面增强拉曼散射(SERS)方法的开发,用于快速和超灵敏检测和鉴定高氯酸盐(ClO4-)和其他阴离子如锝(TcO4-),铀 和硝酸盐在环境样品中。 该方法涉及用胺官能团如2-(二甲基氨基)乙硫醇和N,N,N-三甲基氨基硫醇修饰的受控金纳米颗粒的合成。 发现这些官能化的Au纳米颗粒与高氯酸盐和其它阴离子反应,可用于通过拉曼光谱法在复杂环境基质中以超低浓度检测这些阴离子。 本发明通过提供廉价,快速,超灵敏和实时鉴定和检测高氯酸盐和其他阴离子来克服当前可用的分析技术的局限性。 由于高氯酸盐和其他阴离子的独特的拉曼振动带,该技术不仅敏感,而且具有高度的特异性。