Chlorine Removal with Activated Carbon Using Bubble Column

Bubble column slurry reactor was used for the measurements of gas adsorption and ion-exchange in this work. Adsorption of chorine (dissolved in water) on activated carbon was carried out in the same reactor. The effect of gas flowrates uG 0.016 m s–1-0.027 m s–1 which covers the boundaries of the following four regimes: bubbly flow, first transition, second transition, and coalesced bubble and solid concentrations were investigated. In addition of studying the pH which gives an indication for Hypochlorous Acid HOCl, the most active sanitizer form of Free Chlorine. These design guidelines provide a good starting point for system of removing chlorine from water at activated carbon concentration 20 gm/L, gas velocity 0.023 m/s and contact period of time more 17 minutes

The preservation of significant Islamic architectural heritage of Al-Mustansiriya School, Baghdad City, Iraq

Baghdad City is distinguished by its rich Islamic architectural heritage. Deterioration of heritage building values can affect the city itself as well as the country in general.This research highlights the issue that Al-Mustansiriya School, located in Baghdad City, is facing. There is no attention from local population neither governmental protection to its architectural heritage values. Therefore, there is a dire need to preserve the heritage school, aiming to increase not just tourism to the city, but also to the entire country. After the introduction of the background problem, this research presents the existing literature on Al-Mustansiriya School, highlighting the significant historical values, then summarizing the issues that it is facing. The methodology of this research uses a case study, following a qualitative method. This study contributes to the identification of the significant architectural element values of the place, proposing a theory on the protection of Islamic Architecture Heritage from the issues that Al-Mustansiriya in Baghdad City is facing and high-lights the important role of local organizations and archaeologists in preservation of heritage sites, with its recommendations. It helps on the protection and documentation of heritage values in Al-Mustansiriya, having a global impact towards humanity issues

Extraction of ethanol from aqueous solutions by emulsion liquid membrane: optimization of operating conditions and influence of salts in the feed phase

International audienc

Removal of AY99 from an Aqueous Solution Using an Emulsified Liquid Membrane. Application of Plackett-burman Design

AbstractWater contaminated with dyes presents serious environmental problems. An important quantity of dyes is released as industrial waste in nature. As part of the recovery and the regeneration of these complexes, the extraction of a cationic dye Acid Yellow 99 has been the subject of this work. To removal dyes from industrial wastewater, the technique of extraction by emulsion liquid membrane could provide an industrial success. The membrane used in this study consisted of SPAN80 as emulsifier and aliquat 336 as extractant. The stability of the emulsified liquid membrane has a very important role in the extraction. A study of the effects of different components of the membrane is necessary. The process parameters were studied using a statistical method of experimental Plackett-Burman design, This method allows us to study the effects of different factors simultaneously and determines which factors are most important parameters. The modeling was done by a mathematical model representing the extraction yield according to various factors. The most significant factors on the elimination of the acid yellow99 by the emulsion liquid membrane were then studied

Effects of Parameters on the Extraction Yield of Acid Orange10 by ELM from an aqueous solution. Application of Plackett-Burman Design

The main objective of this study was to optimize the parameters that influence the extraction of a cationic dye acid orange 10 (C16H10N2Na2O7S2) from an aqueous solution, by an emulsified liquid membrane (ELM) consisting of Aliquat336 as the extractant, Span80 as the surfactant and cyclohexane as the diluents. The internal phase used was sulphuric acid.nbsp The extraction process parameters were studied using a statistical method of experimental Plackett-Burman design. Effects of parameters on the extraction yield were analyzed statistically and a mathematical model of the yield according to different parameters was developed, Main effects were studied and levels of all parameters correspondent to the best yield were determined. The concentration of span80 and the acidity of the internal, the composition and the proportion of the membrane were the most important factors for the extraction yield of AO10. Under optimized operator conditions deduced from main effects, a validation of the model was carried out the extraction yields given by the polynomial models according to the coded and uncoded parameters and the extraction yields obtained experimentally, were very close comparatively

Delusional Severity Is Associated with Abnormal Texture in FLAIR MRI

Background: This study examines the relationship between delusional severity in cognitively impaired adults with automatically computed volume and texture biomarkers from the Normal Appearing Brain Matter (NABM) in FLAIR MRI. Methods: Patients with mild cognitive impairment (MCI, n = 24) and Alzheimer’s Disease (AD, n = 18) with delusions of varying severities based on Neuropsychiatric Inventory-Questionnaire (NPI-Q) (1—mild, 2—moderate, 3—severe) from the Alzheimer’s Disease Neuroimaging Initiative (ADNI) were analyzed for this task. The NABM region, which is gray matter (GM) and white matter (WM) combined, was automatically segmented in FLAIR MRI volumes with intensity standardization and thresholding. Three imaging biomarkers were computed from this region, including NABM volume and two texture markers called “Integrity” and “Damage”. Together, these imaging biomarkers quantify structural changes in brain volume, microstructural integrity and tissue damage. Multivariable regression was used to investigate relationships between imaging biomarkers and delusional severities (1, 2 and 3). Sex, age, education, APOE4 and baseline cerebrospinal fluid (CSF) tau were included as co-variates. Results: Biomarkers were extracted from a total of 42 participants with longitudinal time points representing 164 imaging volumes. Significant associations were found for all three NABM biomarkers between delusion level 3 and level 1. Integrity was also sensitive enough to show differences between delusion level 1 and delusion level 2. A significant specified interaction was noted with severe delusions (level 3) and CSF tau for all imaging biomarkers (p < 0.01). APOE4 homozygotes were also significantly related to the biomarkers. Conclusion: Cognitively impaired older adults with more severe delusions have greater global brain disease burden in the WM and GM combined (NABM) as measured using FLAIR MRI. Relative to patients with mild delusions, tissue degeneration in the NABM was more pronounced in subjects with higher delusional symptoms, with a significant association with CSF tau. Future studies are required to establish potential tau-associated mechanisms of increased delusional severity