Arsenic Selective Ligand-Anchored Fiber for Purification of Drinking Water

描述（由申请人提供）：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。目前用于金属污染水修复的传统吸附剂技术在容量、选择性和稳健性方面存在各种局限性。在这个一期项目中，砷选择性配体锚定纤维吸附剂将被开发为一种创新的饮用水砷去除技术的基础，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。第一阶段计划的目标将通过以下具体目标来实现：1)用As选择性配体功能化纤维，2)测量功能化纤维对As的吸附，以及3)评估和改进纤维吸附剂去除As。如果第一阶段项目取得成功，将提交第二阶段的提案，用于建造和测试使用饮用水进行应用研究的原型过滤模块。该项目将探索一种新技术，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。

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.