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。在该第一阶段计划中，将开发一种砷选择性配体锚定的纤维吸附剂，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、良好的选择性和增强的稳健性。这一第一阶段计划的目标将通过以下具体目标来实现：1)使用砷选择性配体对纤维进行功能化，2)测量功能化纤维对砷的吸附，以及3)评估和改进用于去除砷的纤维吸附剂。如果这一第一阶段方案成功，将提交第二阶段提案，用于建造和测试原型过滤器模块，用于饮用水应用研究。该项目将探索一种可应用于饮用水、医疗用水(如透析)和受砷污染的地下水的修复的新技术。 砷(As)被确定为2001年CERCLA危险物质优先清单(ATSDR 2001)中的头号最危险物质。今天，由于数百万人通过受污染的饮用水接触到过量的As，砷中毒已成为全球主要的环境威胁之一。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. In this Phase I program, an arsenic selective ligand-anchored fiber adsorbent will be 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 I program will be achieved through the following Specific Aims: 1) to functionalize fibers with As-selective ligands, 2) to measure As adsorption by the functionalized fibers, and 3) to evaluate and refine the fiber adsorbent for As removal. If this Phase I program is successful, a Phase II proposal will be submitted for the construction and testing of a prototype filter module for the application studies using drinking water. 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. 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.