• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Second International Conference on Wetlands amp; Remediation, Sep 5-6, 2001, Burlington, Vermont >MODELING CESIUM PARTITIONING IN THE RHIZOSPHERE
【24h】

MODELING CESIUM PARTITIONING IN THE RHIZOSPHERE

机译：在根际中对铯划分建模

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Remediation of radiocesium (Cs)-contaminated soil is challenging because Cs binds strongly within the soil matrix and its release may require breakdown of the soil minerals. It is hypothesized that complex biological, geochemical and physical processes in the rhizosphere, the zone where soil and plant roots interface, can solubilize bound Cs. Proper understanding of the partitioning of Cs between the bound, aqueous, and phytoextracted phases requires comprehensive modeling of the rhizosphere as an ecological packet. A conceptual model is being developed that categorizes the processes into six submodels: geochemistry, physical factors, root density, microorganisms, nutrients, and root exudates. A seventh sub-model (Cs fate) describes Cs movement between the three phases. Functional relationships and parametric values within and between the sub-models are being developed based on literature, field characterization, and on-going laboratory experiments. The model provides a framework for better understanding the fundamental processes that control Cs fate in the rhizosphere. The ability to better understand, predict, and control Cs solubilization could be applied to other metals in the future. Ultimately, the model will be used as a tool for enhancing field implementation of in situ solubilization of metals for a variety of remedial activities.
机译：修复受铯污染的土壤具有挑战性，因为铯在土壤基质中具有很强的结合力，其释放可能需要分解土壤中的矿物质。据推测，在根际（土壤和植物根部交界的区域）中，复杂的生物，地球化学和物理过程可以溶解结合的Cs。正确理解Cs在结合相，水相和植物提取相之间的分配，需要对根际作为生态学数据包进行全面建模。正在开发一个概念模型，该过程将过程分为六个子模型：地球化学，物理因素，根系密度，微生物，养分和根系分泌物。第七个子模型（Cs命运）描述了Cs在这三个阶段之间的运动。子模型内部和子模型之间的功能关系和参数值是根据文献，现场表征和正在进行的实验室实验开发的。该模型提供了一个框架，可用于更好地了解控制根际Cs命运的基本过程。将来更好地理解，预测和控制Cs增溶的能力可能会应用于其他金属。最终，该模型将用作增强金属原位增溶以进行各种补救活动的现场工具。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号