بررسی نانوجاذب های سنتز شده بر پایه آلی و معدنی جهت حذف سرب با رویکرد ارزیابی چرخه حیات

Nanoadsorbents, as an emerging product, play a key role in the control and removal of environmental contaminants. Moreover, the enhancement of environmental pressure due to the human activities reveals the necessity for the utilization of novel approaches to identify the environmental impacts of new products. Therefore, this study was conducted to evaluate the cradle to grave Life Cycle (LCA) of synthesized nanoadsorbents including MGO@β-CD and Fe۳O۴@β-CD in term of determination of the environmental indicators involving global warming, energy consumption, water use, human toxicity and ecotoxicity, in order to removal of one kilogram of pb (II) from contaminated water. In the present study after the synthesis of MGO@β-CD and Fe۳O۴@β-CD nanoadsorbents through Sima pro ۹.۲, CED, ReCiPe, IPCC (GWP ۱۰۰year) and USEtox methods were used to assess the energy use, water use, global warming, environmental and human toxicity, respectively. By utilizing one-way ANOVA analysis in order to compare the environmental effects of the study through removing one kilogram of lead from the synthesized adsorbents, it is shown that the carbon-based adsorbent has less environmental effects than the synthesized Fe۳O۴-based adsorbent. The results showed that the amounts of global warming, water use, energy consumption, human toxicity and ecotoxicity for the synthesized nanoadsorbents including MGO@β-CD and Fe۳O۴@β-CD in order to removal of pb (II) are ۵۳۹۴۰۳۵۸۸ and ۷۷۲۲۳۵۹۶۸ kg CO۲ eq, ۶۸۵۶۶۷۰ and ۹۸۱۶۲۰۴ m۳, ۸۰۴۳۷۲۴۵۰۱ and ۱۱۵۱۵۸۱۱۵۴۰ MJ, ۱۳۶۵ and ۱۹۵۴ CTUh ,۴۳۸۸۹۲۵۷۲۶۳ and ۶۲۸۳۳۰۴۹۰۳۲ CTUe. The nanoadsorbents that are synthesized using eco-friendly material and eco-friendly processes could improve the environmental indicator such as human toxicity and eco-toxicity.

کلیدواژه ها:

نانو جاذب ، ارزیابی چرخه حیات(LCA) ، جذب سرب ، سمیت انسانی ، سمیت محیطی