عرض تفاصيل البحث

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عنوان البحث
"Enhanced Macroporous Cationic Chitosan Hydrogel By Freezing And Thawing Method With Superadsorption Capacity For Anionic Dyes "
عنوان المجلة
.Journal Of Polymers And The Environment
ISSN-1572-8919
تفاصيل النشر
سنة النشر - 2022 / الفهرس الاصلي للمجلة - 30 : 7 (عدد الصفحات 16)
تصنيف البحث
الكيمياء الفيزياوية - المجموعة العلمية
البحث والاستدامة
الهدف 9– الصناعة والابتكار والبنية التحتية   المزيد حول هذا الهدف
البحث والمجتمع
نعم , يدعم

اسم الباحثجهة الانتساببلد الباحث
عباس جاسم عطيه جامعة بابل العراق
احمد سعدون عباس جامعة بابل العراق
احمد فوزي حلبوص جامعة بابل العراق
زهراء هاشم عذاب جامعة بابل العراق

In this study, we have developed a simple technique to prepare cationic chitosan hydrogel with interconnected porous structure using freeze–thaw process and the obtained hydrogel was named FCS hydrogel. Scanning electron microscopy (SEM) imaging discovered that the synthesized hydrogel demonstrated interconnected porous structure in the scope of 5–20 m. We also showed that the FCS hydrogel exhibits pH responsiveness behavior, and demonstrated reversible swelling and de-swelling behaviors maintaining their mechanical stability. We demonstrate that the FCS hydrogel swelling capacity decreased at alkaline pH and rose with a decline in pH value. Besides, the FCS hydrogel presented specific surface area of 78.25±8.75 m2 g1, due to the cryogenic treatment of glutaraldehyde cross-linked chitosan hydrogel could increase the surface area and permeability of composite hydrogel and then strongly increasing the adsorption capacity. Subsequently, the FCS monolithic hydrogel tested dyes removal, which provides a high removal efficiency towards anionic dyes including congo red (CR) and sodium fluorescein (SFL) dyes. Significantly, we show that the FCS hydrogel could be regenerated and reused as an adsorbent for wastewater treatment without significant loss of pollutants removal efficiency over a number of adsorption and washing cycles. This study offers a promising environmental friendly and sustainable interconnected porous hydrogel for anionic dye removal from wastewater.