Generation of radicals using discharge inside bubbles and its applications for water treatment

利用气泡内放电产生自由基及其在水处理中的应用

• 批准号: 12305018
• 负责人: YAMABE Chobei
• 金额: $ 11.99万
• 依托单位: Saga University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12305018/
• 关键词: discharge in bubbled water; ozone; water treatment; OH radical; ozonizer; pulsed power; hydroperoxide; radical; 活性種; 水質改善; 脱色; 泡放電; 溶存オゾン; H_2O_2

(1) Generation of radicals in the foaming system using two ceramic diffusers and its applications to water treatment have been done. The measurements of light emissions from OH radicals in the range of 300.335 nm have been done is the oxygen, Ar and air. The light intensity emitted from OH radicals is proportional to the applied voltage. The maximum concentration of hydroperoxide (H_2O_2) obtained is 40mg/l in oxygen and 35 mg/l in air. The dissolved ozone concentration is about 0.13 mg/l.(2)The generated ozone using discharges inside bubbles in water has been measured. The maximum concentration of exhausted ozone from water surface in oxygen is about 6.4 g/Nm3 and dissolved ozone in water is about 0.3 mg/l. The intensity of light emission from OH radicals has been measured and it increases with the applied voltage. The removal of blue color in water has been confirmed.(3) Although the water including acetic acid has been tried to decompose it by the generated radicals produced by discharges is water, the effect has not been confirmed clearly Another new method which has discharge along the water surface generated by pressured fed gas in water. It has been confirmed that this method is possible to decompose the acetic acid in water.

(1)利用两个陶瓷扩散器在发泡体系中产生自由基及其在水处理中的应用。对氧气、氩气和空气中的 OH 自由基在 300.335 nm 范围内的光发射进行了测量。 OH自由基发射的光强度与施加的电压成正比。获得的氢过氧化物(H_2O_2)的最大浓度在氧气中为40mg/l，在空气中为35mg/l。溶解的臭氧浓度约为0.13毫克/升。(2)测量了利用水中气泡内部放电产生的臭氧。水面排出的臭氧在氧气中的最大浓度约为6.4克/Nm3，水中溶解的臭氧约为0.3毫克/升。测量了 OH 自由基的发光强度，该强度随着施加的电压而增加。水中蓝色的去除已被证实。(3)尽管已尝试用含有乙酸的水通过放电产生的自由基将其分解为水，但其效果尚未明确证实。另一种新方法是通过在水中加压供给气体产生沿着水面放电。已证实该方法可以分解水中的乙酸。

项目成果

Joanna Pawlat et al.: "The Foaming System's Features"Proc, of 2000 Korea-Japan Joint S'y-mp.on Electrical Discharge and High Voltage Engineering. (2000)

Joanna Pawlat 等人：2000 年韩国-日本放电和高压工程联合会议的“发泡系统的特点”Proc。

Joanna Pawlat et al.: "Oxidant's Production and Electrical Discharge in Foam"Proc, of 10th Asian Conf.on Electrical Discharge. 251-254 (2000)

Joanna Pawlat 等人：“泡沫中氧化剂的产生和放电”Proc，第 10 届亚洲放电会议。

Chobei Yamabe et al.: "Generation of Radicals by Discharges inside Bubbles in Water"Proc.of XIII Int.Conf.on Gas Discharges and their Applications. 684-687 (2000)

Chobei Yamabe 等人：“水中气泡内放电产生自由基”Proc.of XIII Int.Conf.on Gas Discharges and Their Applications。

見市知昭, 林信哉, 猪原哲, 佐藤三郎, 山部長兵衛: "水中気泡内放電によるオゾン生成"電気学会論文誌. A121. 448-452 (2001)

Tomoaki Miichi、Shinya Hayashi、Satoshi Inohara、Saburo Sato、Chobei Yama：“水下气泡放电产生臭氧”日本电气工程师学会汇刊 A121（2001 年）。

Tomoaki Miichi, Chobei Yamabe et al.: "Generation of radicals using discharge inside bubbles in water for water treatment"The 15th Ozone World Congress. III. 148-155 (2001)

Tomoaki Miichi、Chobei Yamabe 等人：“利用水中气泡内的放电产生自由基用于水处理”第 15 届世界臭氧大会。