A pulse current technique was conducted in a boron-doped diamond （BDD） anode system for electrochemical waste- water treatment. Due to the strong generation and weak absorption of hydroxyl radicals on the diamond su...A pulse current technique was conducted in a boron-doped diamond （BDD） anode system for electrochemical waste- water treatment. Due to the strong generation and weak absorption of hydroxyl radicals on the diamond surface, the BDD elec- trode possesses a powerful capability of electrochemical oxidation of organic compounds, especially in the pulse current mode. The influences of pulse current parameters such as current density, pulse duty cycle, and frequency were investigated in terms of chemical oxygen demand （COD） removal, average current efficiency, and specific energy consumption. The results demon- strated that the relatively high COD removal and low specific energy consumption were obtained simultaneously only if the current density or pulse duty cycle was adjusted to a reasonable value. Increasing the frequency slightly enhanced the COD re- moval and average current efficiency. A pulse-BDD anode system showed a stronger energy saving ability than a constant-BDD anode system when the electrochemical oxidation of phenol of the two systems was compared. The results prove that the pulse current technique is more cost-effective and more suitable for a BDD anode system for real wastewater treatment. A kinetic analysis was presented to explain the above results.展开更多
我国已成为纺织服装出口大国,当前正在建设服装强国,非常需要既懂英语又懂服装、能从事纺织服装的外贸和翻译工作的人才。服装英语属于一种专门用途英语(English for Special Purpose,简称ESP),是纺织服装院校在高年级普遍开设的一门专...我国已成为纺织服装出口大国,当前正在建设服装强国,非常需要既懂英语又懂服装、能从事纺织服装的外贸和翻译工作的人才。服装英语属于一种专门用途英语(English for Special Purpose,简称ESP),是纺织服装院校在高年级普遍开设的一门专业英语课程。研究服装英语的特点将有助于这门课程的教与学,有助于我国外向型纺织服装人才的培养。从词汇学和句法学两方面来分析服装英语的特点。展开更多
基金supported by the Ph.D. Programs Foundation of the Ministry of Education of China (No. 20110006110011)the National Natural Science Foundation of China (No. 51272024)
文摘A pulse current technique was conducted in a boron-doped diamond （BDD） anode system for electrochemical waste- water treatment. Due to the strong generation and weak absorption of hydroxyl radicals on the diamond surface, the BDD elec- trode possesses a powerful capability of electrochemical oxidation of organic compounds, especially in the pulse current mode. The influences of pulse current parameters such as current density, pulse duty cycle, and frequency were investigated in terms of chemical oxygen demand （COD） removal, average current efficiency, and specific energy consumption. The results demon- strated that the relatively high COD removal and low specific energy consumption were obtained simultaneously only if the current density or pulse duty cycle was adjusted to a reasonable value. Increasing the frequency slightly enhanced the COD re- moval and average current efficiency. A pulse-BDD anode system showed a stronger energy saving ability than a constant-BDD anode system when the electrochemical oxidation of phenol of the two systems was compared. The results prove that the pulse current technique is more cost-effective and more suitable for a BDD anode system for real wastewater treatment. A kinetic analysis was presented to explain the above results.
文摘我国已成为纺织服装出口大国,当前正在建设服装强国,非常需要既懂英语又懂服装、能从事纺织服装的外贸和翻译工作的人才。服装英语属于一种专门用途英语(English for Special Purpose,简称ESP),是纺织服装院校在高年级普遍开设的一门专业英语课程。研究服装英语的特点将有助于这门课程的教与学,有助于我国外向型纺织服装人才的培养。从词汇学和句法学两方面来分析服装英语的特点。
