The main objective of this study was to evaluate the adsorptionefficiency of two adsorbent materials, Iraqi chicken eggshells (ESh)and activated carbon (AC) derived from ESh powder for theremoval of a cationic dye (Janus green B; JGD) from aqueoussolution. Activated carbon was synthesised from ESh usinga simple chemical activation method using phosphoric acid asthe activating agent. The physicochemical properties of the adsor-bents were characterised by the Brunauer–Emmett–Teller (BET)method, FT-IR spectroscopy, scanning electron microscopy(SEM), energy-dispersive X-ray spectroscopy (EDS), inductivelycoupled plasma optical emission spectroscopy (ICP-OES), andpoint of zero charge (pHpzc). The results of BET analysis confirmedthat AC has a higher specific surface area (4.146 m2/g) comparedto ESh (1.561 m2/g). The effects of operational parameters includ-ing contact time (5–60 min for ESh and 5–30 min for AC), adsor-bent dose (0.05–1 g/10 mL), temperature (298–318 K), and pH(3.72–11.36) were systematically investigated. Optimal adsorptionoccurred at pH 11.36, where JGD removal efficiencies reached90.13% with 0.2 g/10 mL of ESh after 60 min and 92.89% with0.1 g/10 mL of AC after 30 min at 298 K. Equilibrium data werebest fitted by the Freundlich isotherm model, yielding adsorptioncapacities of 0.09 mg/g for ESh and 1.85 mg/g for AC at 318 K andpH 5.5. The high correlation coefficient (R2 = 0.99) confirmedfavourable heterogeneous adsorption. Kinetic data followed thepseudo-second-order model (R2 = 0.99). Thermodynamic para-meters (ΔG°, ΔH°, ΔS°) indicated that JGD adsorption onto EShwas spontaneous (ΔG°<0), exothermic (ΔH°<0), and associatedwith decreased randomness (ΔS°<0), while adsorption onto ACwas spontaneous (ΔG°<0), endothermic (ΔH°>0), and accompa-nied by increased randomness (ΔS°>0). The adsorption mechan-ism was attributed to electrostatic interactions, hydrogenbonding, and π–π interactions. Desorption experiments demon-strated that 0.2 mol/L HNO₃ effectively regenerated both adsor-bents. After seven adsorption–desorption cycles, AC exhibitedsuperior stability and reusability compared to ESh
zine level in serum was mesured from patients suffering ftom cancer and healthy indiciduals hindred from each individuals were classified into three according to thier age the groups were
Four metal compounds mixed ligand of azo dye ligand (L) and metformin.(Met) were produced at aquatic ethanol for (1:1:1) (M:L:Met). The prepared compounds were identified by utilizing atomic absorption flame, FT.IR and UV–Vis spectrum manners as well as conductivity mensuration. These compounds was assayed of the gained datum the octahedral geometry was proposed into whole prepared complexes.Also in this research was studied represented examining the antibacterial and antifungal impact of the azo dye ligand (L), metformin.(Met) and (Co,Ni, Cu and Cd complexes) on four types of pathogenic, clinically isolated bacteria that are resistant to antibiotic, like Staphylococcus aureus, Staphylococcus epidermidis, Escherichia coli, Klebsiella pneu
... Show MoreIntravascular embolisation of foreign bodies (FB) is a rare, serious complication that may occur during central venous line insertion. A 39-yearold male in a critical condition presented to casualty department with a through-and-through chest gunshot wound. Chest X-ray showed left haemothorax; an urgent chest tube was introduced and central venous access was introduced via the right femoral vein. The guided wire used in the procedure was unintentionally pushed to reach the right ventricular apex. Echocardiography confirmed FB location. Once stabilised, the patient was referred to Iraqi Centre of Cardiac Diseases, where transcatheter retrieval was performed. To stabilise the FB, a 6F pigtail catheter was used to create a U-shaped loop in the
... Show MoreThe efficient removal of dissolved organic compounds (DOC) from wastewater has become a major environmental concern because of its high toxicity even at low concentrations. Therefore, a technique was needed to reduce these pollutants. Ion exchange technology (IE) was used with AmberliteTM IR120 Na, AmberliteTM IR96RF, and AmberliteTM IR402, firstly by using anion and mixed bed system, where the following variables are investigated for the process of adsorption: The height of the bed in column (8,10 and 14 cm), different concentrations of (DOC) content at constant flow rate. The use of an ion exchanger unit (continuous system) with three columns (cation, anion, and mixed bed) was studied.
... Show MoreThis paper examines the impact of the organizational culture prevailing at the university center, Ali KafiTindouf, on the quality of the educational service provided by the university center Ali KafiTindouf from the point of view of the teachers of the center. The questionnaire method was used to determine the effect between the variables studied, by the distribution of 33 questionnaires on a random sample of the study community.
The study found that the organizational culture prevailing at the university center of Ali KafiTindouf contributed to reaching higher levels in the awareness and quality of the educational service provided by the teachers of the center.<
... Show MoreThis research aims to removes dyes from waste water by adsorption using banana peels. The conduct experiment done by banana powder and banana gel to compare between them and find out which one is the most efficient in adsorption. Studying the effects different factors on adsorption material and calculate the best removal efficiency to get rid of the methylene blue dye (MB).