期刊
WATER RESEARCH
卷 42, 期 8-9, 页码 2260-2268出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.watres.2007.12.004
关键词
grey water; essential oil; oregano; water reuse; regrowth; coliform
资金
- Engineering and Physical Sciences Research Council [GR/S18373/01] Funding Source: researchfish
Although the antimicrobial properties of many plant essential oils (EOs) are well known, their application for the disinfection of water has received little attention. In this study, their use as alternative 'natural' disinfectants for grey water reuse was assessed. Toxicity screening of eight EOs and their components highlighted origanum oil (Thymus capitatus) and carvacrol as exerting the most antimicrobial activity. over a 30-min contact time, origanum EO concentrations of up to 94mgL(-1) had minimal effect on total coliform concentrations in the grey water while a concentration of 468mgL(-1) rendered total coliforms non-detectable in 100 mL grey water. Coliform inactivation was found to increase with EO contact time. Organic concentration and particulate size in grey water were shown to reduce the efficacy of disinfection with origanum EO. Origanum EO prevented regrowth of coliform bacteria in reed bed-treated grey water for up to 14 days at a concentration of 468mgL(-1), with or without prior disinfection by ultraviolet (UV) light. Based on the disinfection data reported here, the production of sufficient origanum EO for the disinfection of grey water for reuse with toilet flushing, would require approximately 35 times the average land area of a UK household. (C) 2007 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据