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Article
FTIR Study of Carbon Dioxide Interaction with some Room Temperature Ionic Liquids

Authors: Evon Akram --- Hadi M. A.Abood
Journal: Al-Nahrain Journal of Science مجلة النهرين للعلوم ISSN: (print)26635453,(online)26635461 Year: 2014 Volume: 17 Issue: 4 Pages: 76-85
Publisher: Al-Nahrain University جامعة النهرين

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Abstract

Four ionic liquids were investigated for abilities to capture CO2 alone or with added catalyst at room temperature and atmospheric pressure. Hydrated aluminum nitrate Al (NO3)3.9H2O-urea with added CaO, hydrated ammonium aluminum sulfate NH4Al (SO4)2.12H2O-urea with added solid NaOH did not show in FTIR chart sign of either physical or chemical absorption of CO2, however hydrated ammonium aluminum sulfate NH4Al (SO4)2.12H2O-urea with added NaOHaq or few water showed a chemical absorption of CO2 at 1666 cm-1 as in aluminum chloride-urea ionic liquid while aluminum chloride-acetamide showed weaker or no ability to capture CO2.

تم دراسة اربعة انواع من السوائل الايونية لغرض دراسة قابليتها على امتصاص ثاني اوكسيد الكربون لوحدها او مع أضافة مواد محفزة كيميائيا عند درجة حرارة الغرفة والضغط الجوي. وقد وجد بأن السائل الايوني نترات الامونيوم الالمنيوم المائية – يوريا مع اضافة اوكسيد الكالسيوم او كبريتات الامونيوم الالمنيوم المائية – يوريا مع اضافة هيدروكسيد الصوديوم لم يظهر تغير في تحليل طيف الاشعة تحت الحمراء قد يشير الى وجود امتصاص ثاني اوكسيد الكربون بالطريقة الكيميائية او الفيزيائية. ولكن اظهر السائل الايوني كبريتات الامونيوم الالمنيوم المائية – يوريا مع اضافة هيدروكسيد الصوديوم المائي اظهر تغير في طيف الاشعة تحت الحمراء يشير الى وجود امتصاص كيمياوي لثاني اوكسيد الكربون. بالأضافة الى ذلك فقد وجد بأن السائل الايوني كلوريد الالمنيوم – يوريا ذو قابلية على امتصاص ثاني اوكسيد الكربون وقد اظهر طيف جديد عند 1655 cm-1 لطيف الاشعة تحت الحمراء. وكانت قابلية هذا السائل اكبر من قابلية السائل الايوني كلوريد الالمنيوم – اسيتامايد في قنص ثاني اوكسيد الكربون.


Article
Improving Treatment Performance of Dissolved Air Flotation System by Using Ionic Liquids as Surfactants

Authors: Sawsan A.M. Mohammed --- Aws Abbas Fadhil
Journal: Iraqi Journal of Chemical and Petroleum Engineering المجلة العراقية للهندسة الكيمياوية وهندسة النفط ISSN: 19974884/E26180707 Year: 2015 Volume: 16 Issue: 2 Pages: 31-37
Publisher: Baghdad University جامعة بغداد

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Abstract

The effect of three ionic liquids viz., 1-hexyl-3-methylimidazolium tetrafluoroborate (ILE), 1-hexyl-3-metylimidazolium hexafluorophosphate (ILF) and 1-octyl-3-methylimidazolium tetrafluoroborate (ILG) when used as surfactants on the performance of dissolved air floatation (DAF) was investigated. Experiments were conducted at a temperature of 30-35 ºC, 10ppm ferric chloride as coagulant, 50% recycle ratio, pH 8, and 10 minutes treatment time to find oil and grease (OG) and turbidity removal efficiencies at saturation pressure (2-6) bar.ILs were used at concentration of 50 µl/liter of treated water in two positions in DAF system; the saturation vessel and the treatment tank. The performance using ILs in the saturation vessel were better than that in treatment tank because ILs reduced the surface tension of water, which lead to an increase in the solubility of air in water and eventually increase the microbubble formation. The OG removal efficiency using ILG as an efficient surfactant in saturation vessel was higher than that in the treatment tank and higher than other ILs (ILG>ILF>ILE). The removal efficiency reached about 90% at a saturation pressure of 5 bar, and 85% at 3 bar, which reduces the operation costs. The treated water oil concentration at 3bar was 9.5 ppm, which meets the Iraqi pre-disposal regulatory limit.


Article
Effect of Some Aluminum Salts - Amine Ionic Liquids on Several Serum Human Parameters and Bacterial Growth of Klebsiella pneumoniae and Staphylococcus aureus
1, Hadi M. A. Abood1 and Nadira S. Mohamed2

Authors: Bassam B. Hasan --- Hadi M. A. Abood --- Nadira S. Mohamed
Journal: Al-Nahrain Journal of Science مجلة النهرين للعلوم ISSN: (print)26635453,(online)26635461 Year: 2018 Volume: 21 Issue: 1 Pages: 14-22
Publisher: Al-Nahrain University جامعة النهرين

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Abstract

The advantages of pharmaceutics and biological activity of some ionic liquids (ILs) on human serum (HS) and bacterial growth were studied. The effect of aluminum nitrate-acetamide (AN-Ac) and aluminum ammonium sulfate-urea (ammonium alum-urea) ionic liquids were studied on two types of bacterial species gram negative (K.pneumoniae) and gram positive (Staph.aureus). The results showed that the key factors of inhibition are the type, structures, kind of anion and cation of ILs, water miscibility and concentration of ILs and the type of microorganism in both solid and liquid media. Inhibition of bacteria growth was observed to be decreased with decreasing the quantities of (AN-Ac) and (ammonium alum-urea) ILs. The inhibition zone (The Kirby-Bauer Disk Diffusion Test), beside the optical density were measured at 600 nm for bacterial broth incubated at 37 ºC for 24hrs with different concentrations of ionic liquids of (2, 5, 10, 20)% (v/v). Subsequently, the results of optical densities were calculated as colony forming units (CFUs). The concentration of ILs was calculated practically until it reached the optimal concentration of 2% (v/v). This concentration caused no variation on serum parameters likes sugar, lipid profile, protein, liver functions, kidney functions, and electrolytes, obtained by using Automatic biochemistry analyzers technique.


Article
Extraction of Phenol from Aqueous Solutions Using Bulk ionic Liquid Membranes

Authors: Sawsan A.M. Mohammed --- Mohammed Saadi Hameed
Journal: Iraqi Journal of Chemical and Petroleum Engineering المجلة العراقية للهندسة الكيمياوية وهندسة النفط ISSN: 19974884/E26180707 Year: 2016 Volume: 17 Issue: 1 Pages: 83-97
Publisher: Baghdad University جامعة بغداد

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Abstract

Room temperature ionic liquids show potential as an alternative to conventional organic membrane solvents mainly due to their properties of low vapour pressure, low volatility and they are often stable. In the present work, the technical feasibilities of room temperature ionic liquids as bulk liquid membranes for phenol removal were investigated experimentally. In this research several hydrophobic ionic liquids were synthesized at laboratory. These ionic liquids include (1-butyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide[Bmim][NTf2], 1-Hexyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide[Hmim][NTf2], 1-octyl-3-methylimidazolium bis (trifluoromethylsulfonyl)imide[Omim][NTf2],1‐butyl‐1‐methylimidazoliumhexafluorophosphate[Bmim][PF6], 1‐hexyl‐1‐methylimidazoliumhexafluorophosphate[Hmim][PF6], 1-butyl-1-methylpyrrolidinium bis (trifluoromethylsulfonyl) imide[Bmpyr][NTf2], and 1-octyl-3-methyl imidazolium tetra fluoroborate[Omim][BF4]. The distribution coefficients for phenol in these ionic liquids were measured at different pH values and found to be much larger than those in conventional solvents. Through the values of the distribution coefficients and the experiments that were conducted on bulk liquid membrane applying various types of prepared ionic liquids, 1-butyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide was selected as the best ionic liquid which gave the highest extraction and stripping efficiencies. The effect of several parameters, namely, feed phase pH(2-12), feed concentration(100-1000 ppm), NaOH concentration(0-0.5M), temperature (20-50oC), feed to membrane volume ratio (200-400ml/80ml ionic liquid) and stirring speeds(75-125 rpm) on the performance of the choosen ionic liquid membrane were also studied. The preliminary study showed that high phenol extraction and stripping efficiencies of 97% and 95% respectively were achieved by ionic liquid membrane with a minimum membrane loss which offers a better choice to organic membrane solvents.


Article
Investigation of the New Room Temperature Ionic Liquid of Al(NO3)3.9H2O with Urea CO(NH2)2
تشخيص السائل الايوني الجديد المتكون بدرجة حرارة الغرفة من نترات الالمنيوم المائية مع اليوريا

Authors: Nidhal M. Hasan نضال محمد حسن --- Hadi M.A.Abood هادي محمد علي عبود --- Mahasin F. Alias محاسن فيصل الياس
Journal: Baghdad Science Journal مجلة بغداد للعلوم ISSN: 20788665 24117986 Year: 2016 Volume: 13 Issue: 3 Pages: 489-497
Publisher: Baghdad University جامعة بغداد

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Abstract

Mixing aluminum nitrate nonahydrate with urea produced room temperatures clear colorless ionic liquid with lowest freezing temperature at (1: 1.2) mole ratio respectively. Freezing point phase diagram was determined and density, viscosity and conductivity were measured at room temperature. It showed physical properties similar to other ionic liquids. FT-IR,UV-Vis, 1H NMR and 13C NMR were used to study the interaction between its species where - CO ـــ Al- bond was suggested and basic ion [Al(NO3)4]ˉ and acidic ions [Al(NO3)2. xU]+ were proposed. Water molecule believed to interact with both ions. Redox potential was determined to be about 2 Volt from – 0.6 to + 1.4 Volt with thermal stability up to 326 ℃.

حضر سائل ايوني جديد عديم اللون وبدرجة حرارة الغرفة من مزج نترات الالمنيوم المائية مع اليوريا بنسبة مولية هي 1.2:1 على التوالي وبأدنى درجة انجماد تم التوصل اليها من دراسة مخطط الطور, ودراسة بعض الخواص مثل الكثافة و اللزوجة والتوصيلية الكهربائية عند درجة حرارة الغرفة فوجد ان السائل الايوني المحضر له خصائص فيزيائية مماثلة لسوائل ايونية اخرى. ولدراسة التداخل بين مكونات هذا السائل الايوني استخدمت التقنيات فيزيائية- طيفية طيف الاشعة تحت الحمراء و الاشعة فوق البنفسجية- المرئية و طيف الرنين النووي المغناطيسي حيث افترض تكون اصرة بين اوكسجين مجموعة الكاربونيل واللالمنيوم (-CO-Al-) مع اقتراح الايون السالب (القاعدي)هو [Al(NO3)4]ˉ والايون الموجب (الحامضي) [Al(NO3)2.XU]+ مع الافتراض حدوث تفاعل لجزيئات الماء مع كلا الايونيين. تم تحديد النافذة الكهربائية لهذا السائل الايوني وكانت حوالي 2V من V -0.6 الى + 1.4 V من معرفة جهد تأكسد- اختزال ويمتاز باستقرارية حرارية اعلى من 326 درجة مئوية.

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