Modelling the transport and adsorption dynamics of arsenic in a soil bed filter

Modelling the transport and adsorption dynamics of arsenic in a soil bed filter
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模拟土壤床过滤器中砷的传输和吸附动力学

DOI:
10.1016/j.ces.2019.115205
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发表时间:
2019
影响因子:
4.7
通讯作者:
Mondal R
Mondal R
中科院分区:
工程技术2区
文献类型:
--
作者:
Mondal R

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砷是饮用水中最危险的污染物之一。印度和孟加拉国最近农业增长和化肥使用量的增加导致岩石中天然存在的砷释放,造成了重大的公共卫生问题。一项新技术利用天然丰富的红土土壤过滤砷,为 5000 多人提供饮用水。为了提升这项技术并充分发挥其潜力,全面了解过滤器寿命对运行状况(流量、砷浓度和过滤器尺寸)的依赖性至关重要。我们提出了一个表征砷去除的数学模型,避免了耗时的实验的需要。该模型结合了过滤介质内颗粒间和颗粒内的质量传递。由此产生的模型能够预测特定角色(例如家庭或社区规模)的过滤器寿命,并且应该有助于未来的过滤器部署和维护。
Arsenic is among the most hazardous contaminants present in drinking water. Recent increase in agricultural growth and fertiliser use in India and Bangladesh has led to the release of naturally occurring arsenic from the rocks, creating a major public health issue. A novel technology has been developed using naturally abundant laterite soil to filter arsenic, providing potable water to more than 5000 people. To upscale this technology and realise its full potential, a comprehensive understanding of the dependence of filter life on operating regime (flow rate, arsenic concentration and filter size) is essential. We present a mathematical model that characterises arsenic removal, circumventing the need for time-consuming experiments. The model incorporates inter- and intra-particle mass transport within the filter medium. The resulting model enables prediction of a filter lifetime in a specified role, such as on a domestic or community scale, and should assist in future filter deployment and maintenance.
天然红土上合成地下水和受污染地下水的砷吸附动力学模拟。
DOI: --
发表时间: 2009
影响因子: 13.6
作者:
Abhijit Maiti;H. Sharma;J. Basu;S. De
通讯作者: S. De
批量和柱研究:使用未经处理的红土作为吸附剂吸附砷酸盐
DOI: --
发表时间: 2008
期刊:
影响因子: --
作者:
Abhijit Maiti;S. Dasgupta;J. Basu;S. De
通讯作者: S. De
红土:起源、位置、用途
DOI: --
发表时间: 1995
期刊:
影响因子: --
作者:
Benjamin S. Persons
通讯作者: Benjamin S. Persons