2001 Technology for a Sustainable Environment: Toxic and Nutrient Pollution Prevention in the Chesapeake Bay Using Anion Binding Polymeric Hydrogels (TSE01-C)

2001 年可持续环境技术：使用阴离子结合聚合物水凝胶预防切萨皮克湾的有毒和营养物污染（TSE01-C）

• 批准号: 0124237
• 负责人: Peter Kofinas
• 金额: $ 20万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-09-01 至 2005-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0124237&HistoricalAwards=false
• 关键词: 2001; Technology; Sustainable; Environment; Toxic

CTS- 0124237Toxic and Nutrient Pollution Prevention by Use ofAnion Binding Polymeric HydrogelsPeter Kofinas, University of MarylandABSTRACTMethods that will effectively remove nutrient and toxic anion pollutants even at extremely low concentrations from wastewater effluents are a major environmental need. This work develops an approach that introduces novel crosslinked cationic polymeric materials for removal of such anions from aqueous waste streams. Phosphate, nitrate, and perchlorate-binding polymeric amine hydrogels are being synthesized using various crosslinkers. Their morphology is being characterized by use of atomic force microscopy, and the rate of anion transport as well as anion-binding capacity of these hydrogels is being optimized though testing in various wastewater conditions in batch experiments and lab-scale packed column systems. An economic evaluation of the cost to produce bulk quantities of the polymers will be developed, and the possibilities for adsorbent regeneration or disposal will be explored.This project has local and regional significance within the vicinity of the Chesapeake Bay, but it also addresses national issues important to environmental managers and the general public concerned with the eutrophication of aquatic ecosystems. Missile propellants containing toxic perchlorate anions and poultry farms and aquaculture facilities which discharge nutrient pollutants to natural waters pose a serious pollution problem. The ability of the proposed hydrogels to bind phosphates, nitrates, and perchlorates from such effluents may lead to a cheap and efficient way to remove nutrient and toxic anions in wastewater-generating systems before the water is discharged and to control pollution at the source for some of the most difficult environmental problems facing the U.S.

CTS-0124237使用阴离子结合聚合物水凝胶预防有毒和营养物污染Peter Kofinas，马里兰大学摘要从废水流出物中有效去除营养物和有毒阴离子污染物（即使浓度极低）的方法是主要的环境需求。 这项工作开发了一种方法，引入了新的交联阳离子聚合物材料，用于从废水中去除这些阴离子。 磷酸盐、硝酸盐和高氯酸盐结合的聚合胺水凝胶正在使用各种交联剂合成。 它们的形态特征是通过使用原子力显微镜，阴离子传输速率以及阴离子结合能力的这些水凝胶正在优化，通过测试在各种废水条件下，在批量实验和实验室规模的填充柱系统。 将对大量生产聚合物的成本进行经济评价，并探索吸附剂再生或处理的可能性。该项目在切萨皮克湾附近具有地方和区域意义，但它也解决了对环境管理人员和关注水生生态系统富营养化的公众重要的国家问题。含有有毒高氯酸盐阴离子的导弹推进剂以及向自然沃茨排放营养污染物的家禽养殖场和水产养殖设施构成严重的污染问题。 所提出的水凝胶结合来自这种流出物的磷酸盐、硝酸盐和高氯酸盐的能力可能导致在水被排放之前去除废水生成系统中的营养物和有毒阴离子的廉价且有效的方式，并且在源头控制污染以解决美国面临的一些最困难的环境问题。