Phytofiltration of Arsenic-Contaminated Drinking Water

砷污染饮用水的植物过滤

• 批准号: 6338282
• 负责人: MARK P ELLESS
• 金额: $ 10万
• 依托单位: EDENSPACE SYSTEMS CORPORATION
• 依托单位国家: 美国
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-09-01 至 2002-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6338282
• 关键词: arsenic; biotechnology; plant ecology; plants; technology /technique development; water quality; water supply; water treatment

DESCRIPTION (Applicant's Abstract): Arsenic contamination of drinking water poses significant health risks to millions of people worldwide. Current cleanup technologies have substantial drawbacks, including high cost and high-volume toxic byproducts. Edenspace Systems Corporation proposes to propose to study the ability of a recently identified arsenic-hyperaccumulating fern to remove arsenic from drinking water. The investigator's preliminary research demonstrates that this fern is able to concentrate arsenic to levels more than 16,000 fold higher than the concentration in the soil solution and to rapidly remove arsenic from water containing 200 ug/L of arsenic, 4-fold higher than the current drinking water standard. In the proposed research, the investigators will study the ability of this fern to reduce arsenic levels below the proposed EPA drinking water limit of 5 ug/L by varying factors (plant density, water pH, chlorination/fluoridation, and arsenic species) that are likely to affect arsenic removal rates from drinking water and will also test both a batch and a flow-through technique for phytofiltration of arsenic-contaminated drinking water. This research will provide the foundation for development of a solar-powered (photosynthetic) hydroponics technique, enabling cost-effective, small-scale cleanup of arsenic-contaminated drinking water. PROPOSED COMMERCIAL APPLICATION: NOT AVAILABLE

描述（申请人摘要）：饮用水的砷污染 对全世界数百万人构成重大健康风险。当前清理 这些技术有很多缺点，包括高成本和高产量 有毒副产品Edenspace系统公司提议研究 最近发现的砷超积累蕨类植物的能力， 饮用水中的砷。调查员的初步研究 表明这种蕨类植物能够将砷浓缩到超过 比土壤溶液中的浓度高16，000倍， 从含砷200微克/升的水中去除砷，比 目前的饮用水标准。在拟议的研究中， 研究人员将研究这种蕨类植物降低砷含量的能力， 低于拟议的EPA饮用水限值5微克/升的各种因素（植物 密度、水pH值、氯化/氟化和砷物种）， 可能会影响饮用水中砷的去除率， 用于植物过滤的分批和流通技术 砷污染的饮用水。这项研究将提供基础 为了开发太阳能（光合作用）水培技术， 使低成本、小规模的砷污染饮用水净化成为可能 水 拟议商业应用：不可用