Synthesis and behavior evaluation of a relative permeability modifier

Using N, N-dimethylaminoethyl methacrylate (DMAEMA) and methoxy polyethylene glycol methacrylate (MPEGMA) as raw materials, hydrophobically associating copolymer was synthesized by inverse emulsion polymerization and structurally confirmed by FTIR. Choosing partially hydrolyzed polymer of the copolymer as a relative permeability modifier, its intrinsic viscosity reaches 212.66 mL/g at 25 °C. Its adsorbability on the oil sandstone is investigated, that is to say, the equilibrium concentration is approximately 5100 mg/L while the saturated adsorption is about 0.652 mg/g. Temperature and salt also have a certain effect of RPM system based on the partially hydrolyzed polymer. Finally, the residual resistance factors to water and oil were measured by core displacement test. The results show that the flow resistance of the system to water is 19.9 times as large as that to oil. That is, the system has obvious selectivity to water and oil.     

高岭石-MBT复合材料的制备及其对Pb2+的吸附性能

采用不同的方法制备了高岭石 - 2 -巯基苯并噻唑 (简写为高岭石 -MBT)复合体 ,并考察了其对水溶液中Pb2 的吸附性能 ,得到了高岭石 -MBT复合体吸附水溶液中Pb2 离子的最佳工艺条件 ,测得其对Pb2 的最大吸附量为 4.2 5 μmol/g。     

氨基化磁性纳米粒子的制备及其对Pb2+吸附性能研究

采用改进的高温分解法制备单分散Fe3O4纳米粒子,以正硅酸乙酯为硅源在其表面包覆SiO2,以N-氨乙基-γ氨丙基三甲氧基硅烷为改性剂对复合粒子进行表面氨基化修饰,制备出氨基化磁性复合纳米粒子Fe3O4@SiO2—NH2。利用红外光谱(FT-IR)、透射电镜(TEM)、X射线衍射(XRD),振动样品磁强计(VSM)等手段对复合粒子进行了表征,并研究其作为吸附剂在不同条件下对Pb2+的吸附性能。表征结果显示,所制备的复合粒子具有核壳结构,粒径均匀大约在50nm,粒子表面拥有丰富的氨基功能基团;复合粒子饱和磁化强度为69.50A.m2/kg,具有超顺磁性。吸附实验表明所制备的氨基化磁性复合纳米粒子对Pb2+具有较大的吸附容量,是一种能够有效处理含铅废水的吸附材料。     

复合玉米淀粉微球的合成与其性能研究

以复合淀粉(玉米淀粉和β-环糊精)为原料,N,N’-亚甲基双丙烯酰胺和环氧氯丙烷为交联剂,采用反相乳液聚合法,合成复合玉米淀粉微球。利用红外光谱、扫描电镜、差热分析等方法对微球进行了表征,并用溶胀度法测定微球交联程度,通过微球对无机金属粒子和有机色素吸附量测定微球的吸附性能。结果表明,制备的复合玉米淀粉微球外型规则,粒度均匀,分散性好。复合玉米淀粉微球的溶胀度比玉米淀粉降低,对无机物Ca2+、有机物胭脂红的吸附作用比玉米淀粉更强,可以作为良好的吸附剂。     

提高顶吹平炉炉龄的实践

简述了顶吹氧平炉炉顶砖的损坏和影响炉龄的主要因素，总结了我厂近几年来为提高炉龄的实践和效果。     

N-亚甲基壳聚糖亚磷酸酯的合成和性质

为了得到一种新型低密度脂蛋白吸附剂,将具有聚阳离子性质的壳聚糖(CTS)通过改性制备了一种聚阴离子衍生物.利用Mannich反应原理,在壳聚糖的氨基上引入了亚磷酸酯基,制备了新型阴离子型壳聚糖衍生物N-3P-甲基壳聚糖亚磷酸酯(NMCP).对衍生物的化学结构和性质通过FTIR、XRD和动态接触仪进行了表征,并研究了CTS和NMCP对脂蛋白的吸附性能.     

活性炭对聚丙烯腈功能纤维性能的影响

把活性炭与丙烯腈—氯乙烯共聚体共混制得纺丝溶液, 以二甲基甲酰胺为溶剂湿法纺丝制造了吸附和阻燃双功能聚丙烯腈纤维。本文主要探讨了纤维中活性炭含量, 炭粒径对纤维吸附性能和物理力学性能的影响。     

黑龙江省穆棱沸石矿在环保领域的应用探讨

本文通过对黑龙江省穆棱沸石矿矿石在环保领域的应用研究,提高该区沸石矿的开发利用程度。利用该区沸石矿矿石的化学成分、离子交换性能、吸附性能的数据资料,归纳总结出该区矿石的优越性能以及在环保领域的应用方向。依据矿石的化学成分特征,划分了斜发沸石和丝光沸石的所属类型,以高硅的钾—钙型斜发沸石和碱性钾型丝光沸石为主;依据矿石的离子交换性能,得出本区富矿、中等品位矿石居多;依据吸附性能,得出本区矿石对SO2气体的吸附能力最强,对CO2的吸附能力最弱,并且丝光沸石岩(产于光明—半截沟、风月桥—干沟子矿段)的吸附性能优于斜发沸石岩。沸石在环保领域的应用广泛,且开采成本低,应尽快提高该区沸石矿的利用水平,使该区成为重要的沸石矿产基地。     

Adsorption Characterization for Multi‐Component Organic Matters by Titanium Oxide (TiO2) in Wastewater

Abstract

In this study, an experimental and analytical study on adsorption and adsorption kinetics of organic matters in titanium oxide (TiO₂, Degussa P25) with synthetic wastewater was investigated. In order to understand the removal of different organic sizes in detail molecular weight (MW) distribution of organics matters was examined in terms of number and weight‐average MW. The large MW (33950 dalton) of synthetic organic matters (SOMs) was significantly removed by TiO₂ adsorption and the slight decrease of the small MW (970 dalton) occurred with time. A characterization method was applied to evaluate the composition of SOMs in terms of adsorbability by adsorption of TiO₂. Several adsorption equilibrium and batch kinetics experiments were conducted with different initial concentrations of SOMs and different amounts of adsorbent. A binomial distribution(s) of SOM fraction with the Freundlich coefficient (k) was obtained. The synthetic wastewater was explained by a finite number of pseudospecies (N) identified with a Freundlich isotherm constant (k) value. These parameters were determined by the characterization procedure, together with ideal adsorbed solution theory (IAST) with the pseudospecies number method. Prediction of adsorption isotherm and kinetics derived from a binomial concentration distribution of the characterization procedure were in good agreement with experimental data conducted.     

膨润土对有机染料的吸附

采用分光光度法对膨润土以及改性膨润土吸附工业有机染料的能力进行了测定。膨润土以及改性膨润土对于不同的有机染料其吸附能力不同，染料色越深，越不易被吸附；经活化处理过的膨润土对染料具有更好的吸附脱色性能。