化工学报Issue(9)：3707-3711,5.DOI:10.3969/j.issn.0438-1157.2014.09.054
单频和双频复合超声对水溶液中腐殖酸的降解
Degradation of humic acid in water by single-and dual-frequency ultrasound methods
摘要
Abstract
To understand the degradation of humic acid in simulated water a series of static experiments assisted with ultrasound were done at various energy density of ultrasound produced by both single-frequency (68 kHz, 80 kHz, 100 kHz, 125 kHz and 160 kHz) and dual-frequency (X-Y axial orthogonal 80/125 kHz and 80/160 kHz and X-X axis parallel 68/100 kHz and 125/160 kHz) ultrasound irradiation system. The degradation of dissolved organic carbon (DOC) and trihalomathame precursors (THMFP) were measured. The main results obtained are as follows:for the same energy density of sound, the degradation efficiency is better for low frequency (68 kHz and 80 kHz) than for high frequency ultrasound (100 kHz, 125 kHz, and 160 kHz), dual-frequency is superior to single-frequency, and X-Y axial orthogonal ultrasound excels X-X axis parallel. The best result for degradation of COD and THMFP is obtained in 25 min by using X-Y axial orthogonal combination of 80/160 kHz ultrasound, and is 32.6%and 66.6%respectively.关键词
腐殖酸/降解/单频超声/双频复合超声/三卤甲烷前体物/水溶液Key words
humic acid/degradation/single-frequency ultrasound/dual-frequency ultrasound/THMFP/aqueous solution分类
资源环境引用本文复制引用
赵荔,杨艳玲,李星,周志伟,张洋,马长红..单频和双频复合超声对水溶液中腐殖酸的降解[J].化工学报,2014,(9):3707-3711,5.基金项目
国家水体污染控制与治理科技重大专项（2012ZX07404-003）；国家自然科学基金项目（51278005）；北京市自然科学基金项目（8132007）；研究生科技基金（ykj-2012-8771）。@@@@supported by the National Natural Science Foundation of China (51278005), the Beijing Natural Science Foundation (8132007) and the Post-Graduate Sci-Tech Innovation Foundation (ykj-2012-8771) （51278005）
