离心空气分级机中操作条件对分离粒径的影响

研究了离心空气分级机中操作条件对分离粒径的影响。并探讨离心空气分级机中分离粒径的一般求解方法，总结了各种方法的特点和不足。并在此基础上结合实验研究，提出了新的分离粒径求解方法及一定范围内适用的求解公式。为离心空气分级机在工程中的实际应用提供了可靠的依据与保障。     

铬酸钾-甲醇/乙醇-水体系溶解度研究

通过对铬酸钾-甲醇／乙醇-水三元体系在25，40，60℃下铬酸钾溶解度的研究和比较，及铬酸钾-甲醇／乙醇在25℃时铬酸钾的溶解度的测定，为采用溶析结晶方法从含有铬酸钾的水溶液体系中分离铬酸钾提供了基础数据，为铬酸盐的清洁分离提供了新的思路。     

中低温煤焦油组分的分离及分析技术研究进展

煤焦油科学的基础性问题之一就是煤焦油组分的分离与分析技术。本文综述了中低温煤焦油中组分的常规分离方法，以及对煤焦油中的成分的一些分析手段，并对今后煤焦油的高效利用做出了展望。在中低温煤焦油组分的分离与分析技术研究中，应该多层次、全方位的深入分析，为各地区煤焦油深加工提供有效的数据支撑，从而实现中低温煤焦油的合理利用及高值化利用。     

含氧酸根检测方法的研究现状及质谱法在钨钼分离中的应用前景

溶剂萃取法具有操作简单、回收率高、产品纯度高等优点，被广泛应用于钨钼分离。分离过程中钨钼离子形态会影响与萃取剂的结合方式及萃取历程，因而研究钨钼的离子形态变化有助于深入了解钨钼分离机理，进而指导工业生产。在水溶液中，钨钼的离子形态以钨钼含氧酸根形式存在，研究钨钼离子形态的本质即研究不同钨钼含氧酸根形式对萃取分离过程的影响。本工作综述了水溶液中含氧酸根离子形态的仪器分析方法，发现ESI-MS(电喷雾质谱法)在监测萃取过程中钨钼离子形态转化路径中具有潜在应用，并对ESI-MS在湿法冶金领域中监测钨钼离子形态及其转化规律的应用进行了展望，旨在为今后深入了解钨钼分离机理、定向调控钨钼分离过程及工业生产提供理论指导。     

萃取精馏分离苯中微量烷烃的模拟计算

根据Ｎ－甲基吡咯烷酮，苯和烷烃间汽液平衡数据的研究，提出以Ｎ－甲基吡咯烷酮为溶剂萃取精馏分离焦化苯中微量烷烃的流程，采用同时校正法对萃取精馏塔进行模拟计算，得出萃取精馏塔的优化操作条件，为分离焦化苯中微量烷烃的工业化实验提供了依据。     

萃取精馏法分离焦化苯中微量正庚烷精馏塔计算

根据基础研究，提出以ＤＭＦ为溶剂从焦化苯中分离微量正庚烷的萃取精馏法，并采用三对角矩阵－２ＮＮｅｗｔｏｎ－Ｒａｐｈｓｏｎ联合法对萃取精馏进行了模拟计算，取得了萃取精馏塔、正庚烷回收塔及苯回收塔的操作条件，为分离焦化苯中微量正庚烷流程提供了依据。     

膜分离颗粒体系过程的数学模型研究进展

膜分离技术是国际上最先进的分离技术之一，在颗粒体系的分离中有着广泛的应用。本文主要介绍了膜分离颗粒体系过程的传质机理模型研究进展，为膜技术的理论研究提供一定参考。     

乳状液膜法分离二元氨基酸的研究

定义了乳状液膜法分离氨基酸的分离系数，并以苯丙氨酸(Phe)／天冬氧酸(Asp)作为研究对象，探讨了影响分离系数的主要因素。研究结果表明：用稳态条件下液膜体系中两种氨基酸的传质通量之比定义两种氨基酸的分离系数，能够较全面反映两种氨基酸及液膜体系所具有的特性以及影响分离系数的复杂因素，为改善分离效果提供理论指导。对于采用酸性萃取剂为载体的液膜体系来说，pH值是影响两种氨基酸分离系数的主要因素，而载体浓度对分离系数的影响程度相对较小。     

精矿粉自成球冷态流化特性的研究

自流化床被引进冶金还原过程以来,铁矿石还原失流现象就一直阻碍着它的应用和推广。为解决此问题,本文研究了自成球流化分离的特性。在冷态下,对不同粒度、密度的颗粒进行流化分离实验。实验结果表明采用该方法在一定程度上可以缓解流化过程中的粘结问题。此方法为解决流化过程中颗粒粘结问题提供了一个新的研究方向。     

垂直电泳对含盐染料废水的处理研究

利用垂直电泳装置对含盐染料废水的处理进行了研究。结果表明，在适当的试验条件下，该装置对该类废水中ＣＯＤ的云降率可达５０％以上，同时可对废水实现浓缩分离，本方法为高盐度染料废水的处理提供了一条新的途径。     

Removal of oil from oil/water emulsions using electroflotation process

Dispersed oil was separated from oil–water emulsions in an electroflotation cell equipped with insoluble electrodes: titanium coated with ruthenium oxide as anode and stainless steel screen as cathode. The effect of operating parameters such as current density, oil concentration, flotation time and coagulant concentration, on the performance of the electroflotation cell was examined. Oil removal reached 70% at optimum conditions; 75% in the presence of NaCl (3.5% by wt); and 99.5% in the presence of both NaCl and an optimum concentration of coagulant. Electrical energy consumption varied from 0.4 to 1.6 kWh m⁻³ according to experimental conditions. The performance of the oil removal process was also represented by a first order kinetic rate model. The constants obtained fit the experimental data well. Good correlation was found for the change in percentage oil removal within a wide range of operating parameters.     

Coupling flocculation with electroflotation for waste oil/water emulsion treatment. Optimization of the operating conditions

Electrochemical methods in combination with a chemical process enable the treatment of residuary water containing hydrocarbons. Electroflotation is adequate for the separation of oil from oily wastewater. However, the main disadvantage of this method is the oil concentration limitation. Flocculation plays an important role in the improvement of this process due to its ability to remove organocolloids. In this study the evaluation of the most important operating parameters was examined. An experimental design was applied in order to estimate the effect of operating conditions on the performance ofthe coupling offlocculation with electroflotation by measuring chemical oxygen demand, turbidity and conductivity. Three various flocculants were considered. The efficiency of oil separation reached 99% for a concentrated emulsion of 4% (wt.) at optimum conditions and at an optimum concentration of flocculant agents.     

Studying the efficiency of an electroflotation process for the extraction of low-soluble scandium compounds from aqueous media in the presence of surfactants

The principal kinetic dependences of the electroflotation extraction of low-soluble scandium compounds from chloride, nitrate, sulfate, and carbonate electrolytes modeling scandium-containing feedstock leaching solutions have been studied. The role of surfactants of an anionic, cationic, and nonionic nature has been investigated depending on the composition of a background electrolyte. Under optimal conditions, scandium electroflotation extraction process was established to be efficient and the degree of extraction reached 97–99%.     

Increasing the Efficiency of the Electroflotation Recovery of Finely Dispersed Carbon Material in the Presence of Surfactants from Liquid Technogenic Waste

The electroflotation recovery of a finely dispersed carbon material, namely, carbon nanoflakes, from aqueous solutions in the pH range of 3.0–11.0 in the presence of different forms of surfactants has been experimentally studied. The electroflotation of carbon nanoflakes from aqueous solutions with the addition of the FeCl₃ coagulant has been investigated. The experimental dependences of the degree of recovery and the electrokinetic potential on the pH value of the medium in the presence and absence of a coagulating agent have been derived. The optimal values of characteristics such as the pH value of the medium, volumetric current density, electroflotation time, and the initial concentrations of Fe³⁺ ions and surfactants for effective electroflotation of carbon nanoflakes have been found.     

Treatment of vinasses by electrocoagulation–electroflotation using the Taguchi method

Taguchi method has been applied in the treatment of vinasse from distillery for assess the performance of the process of electrocoagulation–electroflotation in the removal of total solids, turbidity and total organic carbon (TOC). The variables of study were initial pH, current density, concentration of hydrogen peroxide and material of the electrodes.We obtained removals of 50%, 89% and 25% for total solids, turbidity and total organic content, respectively, and 61% removal of chemical oxygen demand (COD). Fourier Transform Infrared (FTIR) has been used to identify possible compounds that are formed on the electrodes.     

Electroflotation purification of wastewater from copper and nickel ions in the presence of surface-active compounds and oil products

This work is devoted to the electroflotation purification of wastewater from copper and nickel ions in the presence of surface-active compounds (SACs) and oil. The kinetics of these processes were studied. It was shown that the presence of oil decelerates the initial stage of the process of extraction of nickel(II) and copper(II) hydroxides. SACs do not affect the extraction of copper hydroxide and the process is intensified for nickel hydroxide. The possibility of extracting metal ions as phosphates was demonstrated.     

Electrocoagulation/electroflotation of real printing wastewater using copper electrodes: A comparative study with aluminum electrodes

Most studies investigated electrocoagulation/electroflotation process (EC/EF) using either aluminum or iron electrodes. The main aim of this study is to investigate the performance of EC/EF to treat printing wastewater under various experimental conditions using copper electrodes. The effects of several variables, including different electrode materials (copper and aluminum), different current densities, electrolysis time, and spacing between electrodes on the removal efficiency of various parameters were investigated. The results showed that the maximum removal efficiencies for COD,TDS, and oil and grease were obtained when using a copper electrode. The maximum removal efficiencies were obtained at a gap distance of 4 cm.     

电浮选方法在废水处理中的应用

利用电浮选方法处理废水,具有设备简单、高效、清洁、不会引起二次污染等优点。该文综述了电浮选方法处理废水的基本原理、应用现状及影响浮选效率的主要因素pH、电流密度、浮选时间,重点介绍了气浮槽、电极材料等电浮选装置,并指出了利用该方法处理废水的发展方向。     

The role of surfactants in intensifying and increasing the efficiency of the electroflotation extraction of sparingly soluble lanthanum compounds

Kinetic trends of electroflotation extraction of sparingly soluble lanthanum compounds from solutions containing NaCl, NaNO³, Na²SO⁴, and Na²CO³ were established and studied. The role of surfactants of anionic, cationic and nonionogenic natures, as well as flocculants (first, of anionic and cationic type) that depend on background electrolyte composition (sulfate, chloride, carbonate, nitrate) is determined as positive. The electroflotation extraction of lanthanum hydroxide is shown to proceed with an degree of extraction of up to 96%.