Arsenic Removal from Natural Waters by Adsorption or Ion Exchange: An Environmental Sustainability Assessment
Arsenic Removal from Natural Waters by Adsorption or Ion Exchange: An Environmental Sustainability Assessment
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DOI：
10.1021/ie4044345
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发表时间：
2014-12-10
影响因子：
4.2
通讯作者：
Irabien, Angel
中科院分区：
文献类型：
--
作者：
Dominguez-Ramos, Antonio;Chavan, Karan;Irabien, Angel
吸附和离子交换除砷工艺的环境可持续性评价是本研究的重点。所追求的目标是确定再生活性氧化铝作为吸附剂的影响，并比较两种离子交换树脂的环境性能。其他目标是比较吸附和离子交换过程的环境性能，以及评价将拟议的技术整合到水净化设施中的效果。通过简化模型和仿真，得到了该系统的生命周期清单。结果表明，吸附法去除As(V)消耗的原生资源是离子交换法的2 ~ 13倍，造成的环境负担是离子交换法的3 ~ 17倍。将吸附或离子交换技术整合到饮用水厂中，将使能源、材料和水的一次消耗分别提高27-155%、7-94%和0.48-5.3%。环境负担的增加主要是由于有害废料的产生。
The Environmental Sustainability Assessment of the adsorption and ion-exchange processes for arsenic removal was the focus of this work. The pursued goals were to determine the impact of regenerating the activated alumina used as adsorbent and the comparison of the environmental performance of two ion-exchange resins. Additional goals were the comparison between the environmental performance of adsorption and ion-exchange processes and the evaluation of the effect of integrating the proposed techniques on a water purification facility. The Life Cycle Inventory was obtained by means of simplified models and simulation. In this work it was concluded that the removal of As(V) by adsorption consumed between 2 and 13 times more primary resources and created 3-17 times more environmental burdens than the ion-exchange process. The integration of adsorption or ion-exchange technology in the drinking water plant would raise the primary consumption of energy, materials, and water by 27-155%, 7-94%, and 0.48-5.3%, respectively. The increase in the environmental burdens was mainly because of the generation of hazardous spent materials.