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    • 5. 发明授权
    • Continuous production of ethanol by use of respiration deficient mutant
yeast
    • 通过使用呼吸缺乏突变酵母连续生产乙醇
    • US4567145A
    • 1986-01-28
    • US441474
    • 1982-11-15
    • Marcel FaberJerome D. BernsteinMatthew Grossman
    • Marcel FaberJerome D. BernsteinMatthew Grossman
    • C12P7/06C12R1/85C12N1/16
    • C12R1/85C12P7/06Y02E50/17Y10S435/94
    • This invention provides a process for producing ethanol from a D-sugar in a continuous aerobic environment using a flocculant respiration-deficient mutant of Saccharomyces uvarum in a single stage fermentor with a cell settling tank and cell recycle, at a productivity of more than 50 grams ethanol per liter fermentor volume per hour. The process comprises (a) innoculating a fermentation zone with a respiration-deficient mutant of Saccharomyces uvarum; (b) feeding a mixture of a D-sugar, a nitrogen source, a vitamin source and a mineral source into the fermentation zone in the presence of oxygen, and (c) fermenting the D-sugar mixture for a sufficiently long period of time to yield an ethanol product. In the process, the yeast are allowed to settle for a sufficiently long period of time and recycled to the fermentation zone to increase ethanol productivity. The preferred D-sugar that may be used in the present process to produce ethanol, is D-glucose.
    • 本发明提供了在具有细胞沉淀池和细胞再循环的单阶段发酵罐中的使用粟酒酵母的絮凝剂呼吸缺陷突变体的连续需氧环境中从D-糖生产乙醇的方法,其生产率大于50克 乙醇每小时每升发酵罐体积。 该方法包括(a)用酵母菌的呼吸缺陷突变体接种发酵区; (b)在氧气存在下将D-糖,氮源,维生素源和矿物质源的混合物喂入发酵区,和(c)将D-糖混合物发酵足够长的时间 得到乙醇产物。 在此过程中,使酵母沉降足够长的时间并循环到发酵区以提高乙醇的生产率。 可用于本发明方法生产乙醇的优选D-糖是D-葡萄糖。
    • 10. 发明申请
    • Periodic aeration in an activated sludge reactor for wastewater treatment
    • 用于废水处理的活性污泥反应器中的定期曝气
    • US20050023215A1
    • 2005-02-03
    • US10629247
    • 2003-07-29
    • Richard BareMatthew GrossmanRoger PrinceDavid Savage
    • Richard BareMatthew GrossmanRoger PrinceDavid Savage
    • C02F3/12C02F3/30
    • C02F3/301C02F3/12Y02W10/15
    • A method for treating wastewater. The method includes the steps of flowing the wastewater in the absence of any additional carbon source into a treatment basin in order to form the contents of the treatment basin and treat the wastewater, mixing the contents of the treatment basin, introducing oxygen into the treatment basin for a first predetermined time period of from about 10 to about 120 minutes, stopping the introduction of oxygen into the treatment basin for a second predetermined time period of from about 7.5 to 120 minutes, repeating the steps of introducing oxygen into the treatment basin for a first predetermined time period and stopping the introduction of oxygen into the treatment basin for a second predetermined time period a plurality of times, and flowing the treated wastewater out of the treatment basin into a clarifier, where treated wastewater is separated into clarified liquid effluent and sludge. Also provided is a process for reducing the level of nitrogen compounds in wastewater.
    • 一种废水处理方法。 该方法包括以下步骤:在没有任何额外的碳源的情况下将废水流入处理池,以形成处理池的内容物并处理废水,混合处理池的内容物,将氧气引入处理池 在约10分钟至约120分钟的第一预定时间段内,停止将氧气引入处理池中,持续约7.5至120分钟的第二预定时间,重复以下步骤:将氧气引入处理池 第一预定时间段,并且停止将氧气引入处理池中多次第二预定时间段,并且将处理的废水从处理池中流出到澄清池中,其中经处理的废水被分离成澄清的液体流出物和污泥 。 还提供了降低废水中氮化合物水平的方法。