Arsenic Selective Ligand-Anchored Fiber for Purification of Drinking Water

描述（由申请人提供）：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。砷的严重毒性已被充分证明。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常规吸附剂技术在容量、选择性和鲁棒性方面具有各种限制。本SBIR计划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。在第一阶段计划中，使用一类新的砷选择性配体锚定纤维净化饮用水的技术和经济可行性得到了证明。在第二阶段计划中，纤维吸附剂将进一步开发，作为创新的饮用水除砷技术的基础，与传统技术（如离子交换，活性氧化铝等）相比，具有更高的容量，良好的选择性和更强的鲁棒性。第二阶段计划的目标将通过以下具体目标实现：1）优化功能化纤维除砷吸附剂; 2）阐明砷与功能化ACF吸附剂的结合机理; 3）进行功能化纤维吸附剂的规模化生产; 4）构建功能化纤维吸附剂模块并测试其运行效能; 5）中试规模功能化纤维吸附模块的构建与评价。6）第二阶段工作总结，工艺评价。该项目将探索一种新技术，可用于饮用水、透析等医疗用水和受砷污染的地下水的补救，并可根据具体需要调整大小，从手持泵到工业尺寸的过滤器，每天能够净化数千加仑的水。 公共卫生相关性：砷（As）是2001年CERCLA危险物质优先清单（ATSDR 2001）中的头号危险物质，砷中毒已成为世界范围内的主要环境威胁之一，数百万人因饮用水污染而暴露于过量的As中。我们的技术将使各种规模的社区都能获得简单且具有成本效益的无砷饮用水。

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.