Anode Modification to Target Pb Removal for Drinking Water Purification using Inverted Capacitive Deionization

使用倒置电容去离子对阳极进行修饰以实现饮用水净化中的铅去除目标

• 批准号: 9345861
• 负责人: Lindsay Boehme
• 金额: $ 15.03万
• 依托单位: POWERTECH WATER, INC.
• 依托单位国家: 美国
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-15 至 2019-02-28
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/9345861
• 关键词: Adopted; Adoption; Adsorption; Anodes; Applications Grants; Biological; Carbon; Cations; Cereals; Chemicals; Chemistry; Child; Coagulation Process; Complex; Copper; Corrosion; Development; Devices; Electrodes; Elements; Ensure; Excision; Goals; Hardness; Heavy Metals; Home environment; Ion Exchange; Ions; Iron; Kentucky; Lead; Lead Poisoning; Lead levels; Legal patent; Ligands; Maintenance; Measures; Medical; Metals; Methods; Michigan; Modification; Natural regeneration; Osmosis; Phase; Plumbing; Population; Precipitation; Process; Property; Research; Site; Sodium Chloride; Solid; Source; Specificity; Stream; Surface; System; Technology; Translating; United States Environmental Protection Agency; Universities; Water; Water Purification; Water Supply; base; blood lead; commercialization; contaminated drinking water; conventional therapy; cost; drinking water; effective therapy; feeding; hazard; improved; innovation; interest; novel; operation; research and development; toxic metal; voltage; water solution; water treatment

Project Summary/Abstract PowerTech Water (PTW) intends to demonstrate the use of inverted capacitive deionzation (i-CDI) technology to target the removal of heavy metals, lead (Pb) in particular, from drinking water. Heavy metals such as lead and copper can enter the water distribution system due to corrosion of pipes and fittings, contaminating drinking water. The US Environmental Protection Agency (EPA) established The Lead and Copper Rule in 1991 to limit exposure of these elements and set action levels to 0.015 ppm (15 ppb) and 1.3 ppm for lead and copper, respectively. The water crisis that occurred in Flint, Michigan, last year is an unfortunate case that shows how important it is to ensure lead is below the action level in drinking water. Point-of-use (POU) solutions for lead removal include chemical precipitation, coagulation, ion-exchange, and reverse osmosis (RO), all of which have arduous regeneration steps and/or require costly maintenance to replace materials. PTW's solution offers a low-cost, low-maintenance, reversible adsorption technology that can target metals removal. More specifically, using unique surface chemistries to impart selectivity to the carbon anode, metals can reversibly adsorb and desorb from solution using PTW's patented i-CDI process that provides stability and pH control during operation. The specific aims of this Phase I grant application include: 1. Demonstrating functionalization of carbon-based anodes with soft base ligands to induce specificity for metals adsorption. 2. Determining the minimum metal concentration, in tap water, allowed to maintain an adsorption selectivity >50% over non-metal, divalent ions.

项目摘要/摘要 PowerTech Water（PTW）打算证明使用倒电容性脱发（I-CDI）技术 尤其是从饮用水中取出重金属（尤其是铅（PB））。铅等重金属 由于管道和配件的腐蚀，铜可以进入水分配系统，从而污染饮用水。 美国环境保护局（EPA）于1991年建立了铅和铜规则，以限制暴露 这些元素并将动作水平设置为0.015 ppm（15 ppb）和1.3 ppm的铅和铜。水 去年在密歇根州弗林特（Flint）发生的危机是一个不幸的案例，它表明了确保领导的重要性 低于饮用水的动作水平。 使用点（POU）解决方案用于去除铅的溶液包括化学沉淀，凝结，离子交换和反向 渗透（RO），所有这些都具有艰苦的再生步骤和/或需要昂贵的维护来代替材料。 PTW的解决方案提供了一种低成本，低维护，可逆的吸附技术，可以针对金属去除。 更具体地说，使用独特的表面化学分子来赋予碳阳极的选择性，金属可以可逆 使用PTW专利的I-CDI工艺从溶液中吸附和解剖，该工艺在期间提供稳定性和pH控制 手术。 该阶段I授予申请的具体目的包括： 1。证明具有软碱配体的碳基阳极的功能化，以诱导特异性 金属吸附。 2。在自来水中确定最低金属浓度，以保持吸附选择性 超过非金属，二价离子> 50％。