کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
5745714 1618780 2018 6 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Capacitive deionization of a RO brackish water by AC/graphene composite electrodes
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موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Capacitive deionization of a RO brackish water by AC/graphene composite electrodes
چکیده انگلیسی


- Activated carbon (AC) recycled from palm-shell wastes can be used as capacitive deionization (CDI) electrodes.
- The GAC composite prepared by dispersion of AC in graphene has the main charge storage in the micropores.
- The GAC composite electrode for water recycling from a semiconductor wastewater by CDI has a desired electrosorption efficiency and stability.

A feasibility study for water recycling and reuse of a reverse osmosis (RO) brackish wastewater by capacitive deionization (CDI) was carried out in the present work. Palm-shell wastes enriched in carbon was recycled to yield valuable activated carbon (AC) that has advantages of high surface area, high specific capacitance, and low electrical resistance as the CDI electrodes. The GAC prepared by dispersion of AC in the graphene (rGO) layers has a high surface area and electrical conductivity for CDI. The GAC electrodes have increasing electrosorption efficiencies from 1.6 to 3.0% during the repeated electrosorption-regeneration cycles under +1.2 → 0 → +1.2 V while the efficiencies the AC electrodes decrease from 2.7 to 1.6%. It is clear that the GAC-based electrodes have a better electrosorption efficiency and stability in, for example, the three repeated electrosoption-regeneration cycles for CDI of the wastewater. This work also exemplifies that the AC recycled from biomass such as palm-shell wastes can be used in CDI electrodes for recycling and reuse of wastewater.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 191, January 2018, Pages 296-301
نویسندگان
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