Heavy Metals Removal from Industrial and Environmental Wastes Using Exopolysaccharide Adsorbants Produced by Marine Microorganisms

利用海洋微生物产生的胞外多糖吸附剂去除工业和环境废物中的重金属

• 批准号: 9460480
• 负责人: Alan Chmurny
• 金额: $ 7.5万
• 依托单位: NOVASCREEN BIOSCIENCES CORPORATION
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-01-01 至 1996-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9460480&HistoricalAwards=false
• 关键词: Heavy; Metals; Removal; Industrial; Environmental

This Small Business Innovation Research Phase I project is designed to establish the technical feasibility for use of a novel marine exopolysaccharide in the removal of heavy metals from industrial effluents and environmental media. These metal pollutants are among the most prevalent and problematic waste treatment and environmental remediation targets. Current technologies provide only partially effective treatment and are costly to implement and use. It is proposed that a complex exopolysaccharide (EPS), which is produced by a recently discovered marine microorganism and which is known to possess strong ion exchange properties, be evaluated for its ability to selectively adsorb heavy metals from complex waste streams containing non-hazardous metals under anticipated field conditions. It is further proposed to evaluate approaches for incorporation of this material into a fixed or supported polymer matrix system. The objectives of this Phase I project are: ) To assess the capacity of this EPS for binding regulated and non regulated metal singly and in combination, and 2) to evaluate various crosslinking and other polymer stabilization procedures to produce an EPS adsorbent that is usable under a variety of process conditions and which can be easily regenerated. It is anticipated that this work will identify methodology for the use of EPS adsorbents for the selective removal of regulated metals from complex, dilute or otherwise difficult to treat metal-containing waste streams.

这个小企业创新研究第一阶段项目的目的是建立技术可行性，使用一种新的海洋胞外多糖从工业废水和环境介质中去除重金属。这些金属污染物是最普遍和最有问题的废物处理和环境补救目标之一。目前的技术只能提供部分有效的治疗，而且实施和使用成本很高。有人建议，一个复杂的胞外多糖（EPS），这是由最近发现的海洋微生物，这是已知的具有较强的离子交换性能，被评估其能力，选择性地吸附重金属从复杂的废物流含有非危险金属在预期的现场条件下。进一步提出评估将该材料掺入固定或支持的聚合物基质系统的方法。该第一阶段项目的目标是：）评估这种EPS单独和组合结合受管制和非受管制金属的能力，以及2）评估各种交联和其他聚合物稳定程序，以生产可在各种工艺条件下使用且易于再生的EPS吸附剂。预计这项工作将确定使用EPS吸附剂从复杂、稀释或难以处理的含金属废物流中选择性去除受管制金属的方法。