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彼得·科菲纳斯，马里兰大学摘要即使在极低浓度的废水中也能有效去除营养物和有毒阴离子污染物的方法是主要的环境需求。 这项工作开发了一种方法，引入新型交联阳离子聚合物材料，用于从含水废物流中去除此类阴离子。 使用各种交联剂合成磷酸盐、硝酸盐和高氯酸盐结合的聚合胺水凝胶。 它们的形态通过使用原子力显微镜进行表征，并且通过在批量实验和实验室规模填充柱系统中在各种废水条件下进行测试，这些水凝胶的阴离子传输速率和阴离子结合能力正在得到优化。 将对生产大量聚合物的成本进行经济评估，并将探索吸附剂再生或处置的可能性。该项目在切萨皮克湾附近具有当地和区域意义，但它也解决了国家问题对于环境管理者和关注水生生态系统富营养化的公众来说非常重要。含有有毒高氯酸盐阴离子的导弹推进剂以及向自然水域排放营养污染物的家禽养殖场和水产养殖设施造成了严重的污染问题。 所提出的水凝胶与此类废水中的磷酸盐、硝酸盐和高氯酸盐结合的能力可能会导致一种廉价而有效的方法，在水排放之前去除废水生成系统中的营养物和有毒阴离子，并在某些方面控制源头污染。美国面临的最困难的环境问题