Arsenic Selective Ligand-Anchored Fiber for Purification of Drinking Water

描述(申请人提供)：今天，砷(As)中毒是全球主要的环境威胁之一，因为数百万人通过受污染的饮用水暴露于过量的砷。砷的严重毒性是有据可查的。在世界范围内，社区需要新的分离技术来去除饮用水中的砷。目前用于修复金属污染水的传统吸附技术在容量、选择性和稳健性方面存在各种限制。在这项SBIR项目中，提出了一种基于新型纤维基吸附剂的饮用水除砷创新技术的开发。在一期工程中，论证了一种新型的砷选择性配基锚定纤维用于饮用水净化的技术和经济可行性。在该第二阶段计划中，将进一步开发纤维吸附剂，作为创新的饮用水除砷技术的基础，与离子交换、活性氧化铝等传统技术相比，该技术具有更高的容量、良好的选择性和更强的稳健性。二期工程将通过以下具体目标来实现：1)优化功能化纤维脱砷吸附剂；2)阐明功能化ACF吸附剂与砷的结合机理；3)实现功能化纤维吸附剂的大规模生产；4)构建功能化纤维吸附剂模块并测试运行效果；5)构建和评估中试功能化纤维吸附剂模块；6)总结第二阶段工作，并对工艺进行评估。该项目将探索一种新技术，该技术可应用于饮用水、透析等医疗用水和受砷污染的地下水的修复，并可根据特定需求进行调整，从手持水泵到工业大小的过滤器，每天能够净化数千加仑的水。 与公众健康相关：砷(As)被确定为2001年CERCLA危险物质优先清单(ATSDR 2001)中最危险的第一种物质。今天，砷中毒是全球主要的环境威胁之一，因为数百万人通过受污染的饮用水接触到过量的As。我们的技术将为各种规模的社区提供简单、经济高效的无砷饮用水来源。

DESCRIPTION (provided by applicant): Today, arsenic (As) poisoning is one of the major environmental threats worldwide as millions of human beings have been exposed to excessive arsenic through contaminated drinking water. The serious toxicity of arsenic has been well documented. Worldwide, communities demand novel separation technologies for the removal of arsenic from drinking water. Conventional adsorbent technologies currently in use for remediation of metal-contaminated water have various limitations in terms of capacity, selectivity and robustness. The development of an innovative arsenic removal technology for drinking water based on a new class of fiber-based adsorbent is proposed in this SBIR program. In the Phase I program, the technical and economic feasibility of using a new class of arsenic selective ligand-anchored fiber for purification of drinking water was demonstrated. In this Phase II program, the fiber adsorbent will be further developed as the basis for an innovative arsenic removal technology for drinking water with higher capacity, good selectivity, and enhanced robustness compared to conventional technologies such as ion exchange, activated alumina, and others. The goals for this Phase II program will be achieved through the following Specific Aims: 1) Optimize functionalized fiber adsorbent for arsenic removal, 2) Elucidate mechanism of arsenic binding to functionalized ACF adsorbent 3) Perform large-scale production of functionalized fiber adsorbent, 4) Construct functionalized fiber adsorbent module and test operating efficacy, 5) Construct and evaluate pilot-scale functionalized fiber adsorbent module, 6) Summarize Phase II work, and evaluate process. This project will explore a novel technology that can be applied to the remediation of drinking water, water for medical use, such as dialysis, and groundwater contaminated by arsenic, and that can be sized to specific needs, from a hand-held pump to an industrial-sized filter capable of purifying thousands of gallons of water per day. PUBLIC HEALTH RELEVANCE: Arsenic (As) is identified as the number one most hazardous substance on the 2001 CERCLA Priority List of Hazardous Substances (ATSDR 2001).Today, arsenic poisoning is one of the major environmental threats worldwide as millions of human beings have been exposed to excessive As through contaminated drinking water. Our technology will allow communities of all sizes a simple and cost effective source of arsenic-free drinking water.