عنوان
پدید آورنده
موضوع
رده
کتابخانه
محل استقرار
شماره کتابشناسی ملی
شماره
TL48679
زبان اثر
زبان متن نوشتاري يا گفتاري و مانند آن
انگلیسی
عنوان و نام پديدآور
عنوان اصلي
Removal of metal contaminants from lean MDEA solvent using clay and polymer composite
نام عام مواد
[Thesis]
نام نخستين پديدآور
Safa Abdullah Gaber
نام ساير پديدآوران
Banat, Fawzi
وضعیت نشر و پخش و غیره
نام ناشر، پخش کننده و غيره
The Petroleum Institute (United Arab Emirates)
تاریخ نشرو بخش و غیره
2015
مشخصات ظاهری
نام خاص و کميت اثر
119
يادداشت کلی
متن يادداشت
Committee members: Elkadi, Mirella; Haija, Mohammad Abu; Kannan, C. S.; Pillay, Avin
یادداشتهای مربوط به نشر، بخش و غیره
متن يادداشت
Place of publication: United States, Ann Arbor; ISBN=978-1-339-52771-0
یادداشتهای مربوط به پایان نامه ها
جزئيات پايان نامه و نوع درجه آن
M.S.
نظم درجات
Applied Chemistry
کسي که مدرک را اعطا کرده
The Petroleum Institute (United Arab Emirates)
امتياز متن
2015
یادداشتهای مربوط به خلاصه یا چکیده
متن يادداشت
Nowadays chemical absorption using alkanolamine solutions, such as N-methyldiethanolamine (MDEA), is the most feasible method for the removal of H2S and CO2 in gas sweetening unit. However, the accumulation of heavy metals in the sweetening unit can lead to several problems such as foaming and fouling. In addition, iron being chelated to lean alkanolamine cannot be removed easily in the regenerator and causes errosion over long time. In this research work, sepiolite clay was studied as a low cost adsorbent for iron removal from MDEA. Different treatment for sepiolite clay has been investigated. The modified material was characterized by IR spectroscopy, XRD, SEM and BET. It was found that treatment with HNO3 was the best in improving the adsorption capacity of sepiolite. To determine the adsorption uptake of iron for raw and nitric acid treated sepiolite, kinetic, thermodynamic and adsorption isotherm studies were done using lean MDEA. The experimental data were analyzed using the Langmuir and Freundlich adsorption models. The Langmuir isotherm fitted well the raw sepiolite while Freundlich isotherm fitted better the acid treated samples. According to Langmuir model, the maximum adsorption uptake for raw and treated sepiolite are 0.53 and 3.3 mg/g, respectively. It was found that adsorption of iron on sepiolite before and after treatment is endothermic and spontaneous. Pseudo-second order model best represent the kinetics adsorption of iron. Desorption experiment showed that treated sepiolite can be regenerated using 0.1 M HNO3 for three consecutive cycles without obvious loss of its iron removal efficiency. The adsorption characteristics of treated sepiolite make it a promising adsorbent for iron removal. Additionally, a series of composite based on acrylamide and nitric acid treated sepiolite was prepared. The polymer samples with different sepiolite amounts were characterized by means of IR and SEM analysis. The composite exhibited less sorption capacity than sepiolite alone.
موضوع (اسم عام یاعبارت اسمی عام)
موضوع مستند نشده
Chemistry
اصطلاحهای موضوعی کنترل نشده
اصطلاح موضوعی
Pure sciences;Adsorption isotherm;Methyldiethanolamine;Sepiolite clay
نام شخص به منزله سر شناسه - (مسئولیت معنوی درجه اول )
مستند نام اشخاص تاييد نشده
Kojoori-Saatchi, Autoosa Elizabeth
نام شخص - ( مسئولیت معنوی درجه دوم )
مستند نام اشخاص تاييد نشده
Banat, Fawzi
شناسه افزوده (تنالگان)
تقسيم فرعي
Applied Chemistry
مستند نام تنالگان تاييد نشده
The Petroleum Institute (United Arab Emirates)
شماره دستیابی
شماره بازیابی
1771933460; 10027573
دسترسی و محل الکترونیکی
نام الکترونيکي
مطالعه متن کتاب وضعیت انتشار
فرمت انتشار
p
اطلاعات رکورد کتابشناسی
نوع ماده
[Thesis]
کد کاربرگه
276903
اطلاعات دسترسی رکورد
سطح دسترسي
a
تكميل شده
Y
