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نوع الوثيقة : مقال في مجلة دورية 
عنوان الوثيقة :
Fast and selective removal of trace concentrations of bismuth (III) from water onto procaine hydrochloride loaded polyurethane foams sorbent: Kinetics and thermodynamics of bismuth (III) study
Fast and selective removal of trace concentrations of bismuth (III) from water onto procaine hydrochloride loaded polyurethane foams sorbent: Kinetics and thermodynamics of bismuth (III) study
 
الموضوع : كيمياء 
لغة الوثيقة : الانجليزية 
المستخلص : Bismuth (III) species are included in the list of potential toxins for motor neurons. Thus, fast and selective method for removal of bismuth (III) species has been developed. The method was based upon the formation of tetraiodobismuthate [BiI4]-aq in the test aqueous solution in the presence of KI-H2SO4 followed by subsequent extraction of [BiI4]-aq by procaine hydrochloride (PQ+·Cl-) immobilized polyurethane foams (PUFs). The rate of removal of bismuth (III) ions from aqueous solution by procaine hydrochloride (PQ+·Cl-) immobilized polyurethane foams (PUFs) were studied in batch conditions employing Weber-Morris, Lagergren, Bhattacharya and Venkobachar, and Bt models. The rate of sorption of bismuth (III) was rapid initially within 5-15min and reached a maximum in 30min compared to other solid sorbent. Initially, the uptake of [BiI4]-aq onto PQ+·Cl- loaded PUFs was fast followed by kinetically first-order sorption with an overall rate constant, k=0.132±0.033min-1. Thus, film and intraparticle transport are the two steps that might be influence bismuth (III) sorption. The negative values of ΔG of the retention step of bismuth (III) dictate that the uptake of the analyte onto the used sorbent is spontaneous phenomena. Exothermic nature of bismuth (III) sorption is governed by the negative value of ΔH. The positive value of ΔS reflects the organized uptake of bismuth (III) on the used sorbent in a more random fashion. The PUFs offers unique advantages of [BiI4]-aq retention over conventional solid sorbents in rapid and effective separation of trace concentration of bismuth (III) from aqueous media. Thus, the developed PQ+·Cl- treated PUFs sorbent could be packed in column for removal of bismuth (III) species from industrial wastewater. 
ردمد : 1385-8947 
اسم الدورية : Chemical Engineering Journal 
المجلد : 173 
العدد : 1 
سنة النشر : 1432 هـ
2011 م 
نوع المقالة : مقالة علمية 
تاريخ الاضافة على الموقع : Sunday, April 29, 2012 

الباحثون

اسم الباحث (عربي)اسم الباحث (انجليزي)نوع الباحثالمرتبة العلميةالبريد الالكتروني
محمد سرور الشهاويEl-Shahawi, Mohammad Sباحثدكتوراهmalsaeed@kau.edu.sa
عبدالغني حمزةHamza, Abdulghani باحثدكتوراه 
عبدالعزيز إبراهيم السباعيEl-Sebaii, A Aباحثدكتوراهaasebaii@yahoo.com
H M Al-SaidiAl-Saidi, H Mباحثدكتوراه 

الملفات

اسم الملفالنوعالوصف
 33054.pdf pdfAbstract

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