反胶束溶液同时萃取油和蛋白质的工艺研究

对AOT／异烷体系同时萃取大豆中的油和蛋白质进行了研究,实验结果表明：蛋白质的萃取率受萃取时间、水溶液的pH值、盐浓度、AOT浓度的影响,与传统制油工艺比较,油的萃取效果基本不变,正交实验分析表明,前萃的最佳条件为萃取时间90min,盐浓度0.1mol/L,pH值5.0;AOT浓度6g／50ml异辛烷。     

反胶束体系萃取油莎豆蛋白的研究

对AOT/异辛烷反胶束体系萃取油莎豆蛋白的前萃工艺进行了研究,考察了加料量、萃取温度、时间、AOT质量浓度、W0、KCl浓度、pH对蛋白质前萃率的影响,通过单因素试验和均匀设计试验,得到前萃的最佳工艺条件为:加料量0.05 g/mL,AOT质量浓度0.12 g/mL,W0为16,KCl浓度0.02 mol/L,pH7,萃取温度40℃,萃取时间86 min.     

反胶束溶液萃取植物油料中蛋白质的性能研究

对AOT/异辛烷反胶束溶液萃取大豆中的蛋白质的性能进行了研究 .结果表明 :蛋白质的萃取效果取决于反胶束的w0 、水的pH值和KCl浓度 ,且蛋白质是否能进入反胶束内 ,与反胶束的大小无关 ,而主要受极性核内水的性质的影响     

反胶束中枯草杆菌中性蛋白酶的活力研究

系统地研究了枯草杆菌AS1 398中性蛋白酶在AOT/异辛烷反胶束体系中的催化行为 ,研究底物浓度、表面活性剂浓度、水含量、pH值、温度、盐的浓度及种类对酶活力的影响 .结果表明 :酶在反胶束体系中表现出“超活性” ,且作用于胶束膜 .在AOT/异辛烷浓度为 0 0 8g/mL时 ,影响酶活力大小主次因素为 :pH值 >温度 >盐浓度W0 .最佳酶活力条件 :5 0℃ ,0 2mol/LKCl液 ,pH值 8 0 ,W0 值 1 1 6,此时酶活力为 6 2 6× 1 0 5u/g .     

反胶团法萃取菜籽蛋白质工艺研究

研究了CTAB/异辛烷/正辛醇反胶团体系萃取分离菜籽蛋白质的前萃工艺.考察了水相pH、离子强度、原料加料量、萃取时间对菜籽蛋白质萃取率的影响,最后采用了四因素四水平正交实验,得出反胶团法分离菜籽蛋白质的前萃最优工艺条件为:菜籽粉加入量为0.6 g,KCl浓度0.09 mol/L,pH值7.0,萃取时间80 min.在最佳工艺条件下,前萃率可达70.19%.     

反胶束溶液萃取植物油料中蛋白质的性能研究

对AOT／异辛烷反胶束溶液萃取大豆中的蛋白质的性能进行了研究，结果表明：蛋白质的萃取效果取决于反胶束的w0，水的pH值和KCl浓度，且蛋白质是否能进入反胶束内，与反胶束的大小无关，而主要受极性核内水的性质的影响。     

AOT/异辛烷反胶团体系提取细胞色素C

用AOT／异辛烷反胶团溶液提取水溶液中的细胞色素C。研究了pH值、离子强度、相体积比、搅拌速度、AOT浓度浓度等因素对提取率的影响。结果表明,通过调节pH值、离子强度等工艺条件,可以使细胞色素C的提取率达到97％,且不需加助提取剂。     

两种方法提取葵花油料中蛋白质功能特性的研究

研究了AOT/异辛烷反胶束溶液萃取法和碱溶酸沉法从葵花油料中提取的葵花蛋白产品功能特性的差异,分析了葵花籽蛋白质的溶解性、吸油性、发泡性、乳化性及乳化稳定性的比较.     

两种方法提取葵花油料中蛋白质功能特性的研究

研究了AOT/异辛烷反胶束溶液萃取法和碱溶酸沉法从葵花油料中提取的葵花蛋白产品功能特性的差异,分析了葵花籽蛋白质的溶解性、吸油性、发泡性、乳化性及乳化稳定性的比较.     

微乳液体系中脂肪酶催化油脂水解反应研究

研究了微乳液体系中脂肪酶LIPASELVK催化的红花油水解反应,考察了表面活性剂种类、微乳液ω0.值、表面活性剂浓度、反应温度pH、添加剂等因素对水解率的影响,确定了微乳液体系中脂肪酶LIPASELVK水解红花油的适宜条件:以异辛烷为有机溶剂,[AOT]=0.1mol/L,ω0=49,反应温度25℃,缓冲溶液的pH为8.0,不加添加剂.     

原油/水界面张力的影响因素

应用滴体积法测定了5种原油/水的界面张力,考察了水相盐含量、pH值及温度对油/水界面张力的影响.结果表明,不同原油的油水界面张力差别较大;原油/水界面张力随温度、水相NaC1浓度、pH值的变化呈现出一定的规律性.     

AOT/异辛烷反胶束体系萃取豆豉纤溶酶的前萃工艺初探

初步研究了丁二酸二异辛酯磺酸钠(AOT)浓度、pH值、离子强度、搅拌时间各个因素对豆豉纤溶酶前萃工艺的影响,并确定了各因素的最佳水平,即AOT浓度50 mmol/L、pH7.0、不添加KCl、搅拌时间10 min,在此条件下酶活回收率62.9%,纯化倍数8.5.     

CTAB/异辛烷/正构醇/水微乳状液的相行为及其结构转变的研究

研究了不同分子量和浓度的醇对十六烷基三甲基溴化铵（CTAB）／异辛烷／水体系形成微乳的影响，制备了CTAB／异辛烷／水／醇的四元相图和CTAB／异辛烷／正构醇／水体系的拟三元相图。测定了CTAB／异辛烷／正丁醇体系在水溶液中单相微乳的电导率随含水量的变化曲线，由电导率曲线研究了微乳由W／O型微到液晶再到O／W型微乳的结构转变。     

麻疯树籽粕中毒蛋白的提取

研究了溶剂浸提法提取麻疯树籽饼粕中麻疯树毒蛋白时的各影响因素,考察了提取时间、提取温度、pH值、缓冲液浓度和无机盐浓度对麻疯树毒蛋白溶出的影响.结果表明:提取液pH值是影响麻疯树毒蛋白溶出的最重要因素,提取时间、缓冲液浓度及盐浓度对提取也有一定影响.通过正交试验获得最佳提取条件:提取时间3 h,提取温度25℃,提取液为浓度0.4 mol/L的NaCl溶液,pH=7.在此条件下得到的毒蛋白占去壳种仁的质量分数的0.39%.     

内蒙古油砂油脱泥、脱砂工艺研究

以内蒙古扎赉特旗油砂水洗分离生成油为研究对象,采用有机溶剂萃取和水洗后处理相结合的方法,对油砂油进行脱泥、脱砂工艺研究。考察了有机溶剂种类、剂油质量比、温度、时间、水洗试剂质量分数等条件对油砂油脱泥、脱砂工艺研究的影响。结果表明,在剂油质量比为1：1,水洗温度90℃,水洗试剂质量分数8％,分离时间为25min的条件下,采用1号溶剂油处理后的油砂油萃取率可达到94％以上。     

Repressing sulfate-reducing bacteria growth in the affusion system of oil field by changing ecological factors

Aiming at the corrosion issue of oil extraction equipments caused by sulfate-reducing bacteria （SRB） reproducing in oil field affusion system, we studied the dominant strains in the SRB community and the impact of four ecological factors on the growth of the dominant strains：temperature, pH, mineralization degree and concentration of PAM （Polyacrylamine）. The feasibility of repressing the growth of SRB by changing ecological factors was also discussed. The results indicate that Desutfobacter （one genus of SRB） is the preponderant strains of the system, and the order of the effect of four ecological factors is pH 〉 temperature 〉 the concentrations of PAM 〉 mineralization degree. The optimal pH for the highest growth rate of SRB is 8.0. No growth of SRB was observed when pH 〈 4 or pH 〉 12. The optimal temperature for the growth of SRB is 40 ℃ and the ecological amplitude is 20 -50 ℃. The appropriate concentration values of PAM is 400 -800 mg/L, beyond of which the multiplication rate and growth quantity 6f cell decrease obviously. The effect of mineralization degree of SO4^2- , HCO^3- and Na^＋ on the growth of SRB has reached an extremely remarkable level, and the change of three ions＇ concentration in water obviously effects SRB： The optimum values on the main ions in the system are Cl- of 200mg/L, HCO^3- of 900 mg/L,SO4^2- of 400 mg/L, Mg^2＋ of 60 mg/L and Na^＋ of 900 mg/L. Our results indicate that it is possible to repress the growth of SRB by changing the ecological factors in nil field affusion system.     

Adsorption of oil from waste water by coal: characteristics and mechanism

The work described here was focused on exploring the potential application of coal to purification of oily waste water.Coal was added to oily waste water as an adsorbent and then removed through a flotation process.This allowed economical and highly efficient separation of oil from the waste water.The absorption time,coal type,coal particle size distribution,pH value and oil concentration were investigated.The results indicate that oil absorption by a coal increases for a period of 1.5 h and then gradually tends toward an equilibrium value.It appears that the absorption capacity of anthracite is more than that of lean coal or lignite,given the same coal particle size distribution.The absorption capacity of a coarse coal fraction is less than that of finer coal,given the same of coal type.The absorption capacity of anthracite decreases slightly as the pH increases from 4 to 9.The adsorption of oil on anthracite follows the Freundlich isothermal adsorption law: given initial oil concentrations of 160.5 or 1023.6 mg/L the absorption capacity was 23.8 or 840.0 mg/g.The absorption mechanism consists of two kinds of absorption,a physical process assisted by a chemical one.