硼氢化钠的电化学制备研究进展

对国内外电化学硼氢化的研究进行了综述。以电化学还原偏硼酸钠制备硼氢化钠为主线探讨了电极材料、电解液组成、电解槽和隔膜及添加剂等因素对电化学硼氢化的影响。论述了研究电化学还原偏硼酸钠的机理和重现性,并对其更进一步研究进行了展望。     

高纯碳酸锂的制取方法探讨

介绍了高纯碳酸锂的几种不同用途。论述了制备高纯碳酸锂的几种方法，重点介绍电解法和氢化法。     

Integrated Electrolytic Treatment and Adsorption for the Removal of Melanoidins

This work investigates electrolytic treatment and activated carbon adsorption for the removal of melanoidins, the recalcitrant coloring component in fermentation industry wastewaters. A 10% solution of synthetic melanoidins was electrolytically reduced and simultaneously oxidized in an electrolytic cell, thereby altering its reactivity. Adsorption studies using granular activated carbon were conducted using both control and electrolyzed streams. The filterability, surface tension and capillary suction time of the samples were also determined. The reduced melanoidins stream exhibited both a high chemical oxygen demand (COD) removal of 79% and a high color removal of 77% upon activated carbon adsorption. In comparison with the oxidized fraction, the reduced samples displayed enhanced filtration flux as well as decreased capillary suction time, thus indicating better filterability. Furthermore, a decline in surface tension was also observed confirming the decreased hydrophobicity of the reduced melanoidins.     

Degradation of Disperse Blue E‐4R in Aqueous Solution by Zero‐Valent Iron/Ozone

Degradation of an anthraquinone dye, disperse blue E‐4R, by zero‐valent iron (ZVI)/ozone (O₃) was carried out in a series of laboratory‐scale experiments. The obtained results indicated that this method was much more effective than single ZVI or single O₃ at removal of color, chemical oxygen demand, total organic carbon, and adsorbable organic halogen. The effect of several related operational parameters, including O₃ dosage, zero valent iron dosage, temperature, pH value, and ZVI particle size were also discussed. Finally, we tried to decontaminate some actual samples with this method, which showed high treatment efficiency to the sample pretreated by conventional activated sludge.     

以草酸钠为原料膜法制取草酸和烧碱的研究

本文提供了一个用离子膜电解法生产草酸的新工艺，研究了草酸钠的提纯和制取草酸新方法的工艺条件，求取了技术经济指标，解决了传统工艺的三废污染和产品质低等问题。     

金属锂提取工艺比较分析

简述了金属锂的应用以及熔盐电解法和真空热还原法提取金属锂的技术特点,评述了两种方法的优缺点并提出了改进方法,对金属锂冶炼的未来发展进行了展望。     

安全使用电解水制氢系统小经验

根据20多年使用电解水系统制氢的经验,总结出使用该系统的一些体会。     

库仑法测定煤中全硫必须重视的问题

煤中全硫测定是煤质分析的一项重要指标。本文从煤样的粒度和均匀性,载气流量,电解液的使用,电解池和电极片的处理,库仑测硫仪的校正等方面对应用库仑法测定煤中全硫应注意的问题及原因进行分析,以确保测定结果的准确性。     

电解锌渣场环境工程技术问题与实例分析

铅锌矿冶电解锌浸出渣含有害成份,也含可再生利用成份。堆存处置方法与一般尾矿不相同。本文结合兰坪铅锌矿工程实例,探讨了电解锌浸出渣堆存技术问题。     

安全使用电解水制氢系统小经验

根据20多年使用电解水系统制氢的经验，总结出使用该系统的一些体会。