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302 results on '"Alsohaimi, Ibrahim Hotan"'

32. Novel Synthesis of Polystyrenesulfonate@AC Based on Olive Tree Leaves Biomass for the Photo-Degradation of Methylene Blue from Aqueous Solution.

Author

Alsohaimi, Ibrahim Hotan

Subjects
*METHYLENE blue, *ACTIVATED carbon, *OLIVE leaves, *MANUFACTURING processes, *BAND gaps
Abstract

Water pollution poses significant environmental challenges, particularly from dyes used in various industrial processes. Effective removal methods are essential to mitigate their impact on aquatic environments. Activated carbon (AC) is widely used for its adsorption properties, and further modifications can enhance its efficiency. In this study, we developed polystyrene sulfonate-modified activated carbon (AC@PSS) using a facile and efficient method to improve the photo-degradation of methylene blue (MB) in aquatic environments. The modification enhanced the activated carbon's surface features and adsorption, improving its photocatalytic activity. The photocatalysts were characterized using XRD, SEM, FTIR, and TGA. Based on Tauc's equation, the band gap value of AC@PSS was 4.0 eV. The photocatalytic efficacy of the AC@PSS catalyst was assessed by studying the degradation of MB dye under UV-rich solar irradiation. The influence of various variables on the photo-degradation of MB dye such as pH (2–12), reaction time (0–160 min), catalyst dosage (20–80 mg), and dye concentration (10–300 mg/L) was investigated. The AC@PSS catalyst demonstrated impressive degradation efficacy for MB dye of 98% in 160 min at pH 11, a temperature of 25 °C, a catalyst dose of 60 mg, and initial MB content of 10 mg/L. The superior performance of the AC@PSS catalyst could be due to the effective separation of photogenerated electron holes. Accordingly, the photo-degradation of MB is affected by the photo-produced radical •OH. Finally, we conclude that synthesizing AC@PSS is highly effective for the degradation of MB dye. [ABSTRACT FROM AUTHOR]

Published
2024
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36. Comparative analysis of high-performance UF membranes with sulfonated polyaniline: Improving hydrophilicity and antifouling capabilities for water purification

Author

Alenazi, Raghad Ayed, primary, Alsohaimi, Ibrahim Hotan, additional, El-Aassar, M.R., additional, El-Ossaily, Yasser A., additional, Alenezy, Ebtsam K, additional, Alanazi, Seham J.F., additional, Alshahrani, Ahmed.A., additional, Alanazi, Ahmed Hamad, additional, Aldawsari, Abdullah M., additional, and Hassan, Hassan M.A., additional

Published
2024
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50. Validated spectrophotometric assessment of 1,4-dioxane in drinking water by amionhydroxynaphthlene sulfonic acid (AHSA).

Author

Hassan, Hassan M. A., Alamri, Mohammed Saeed, Alrashidi, Abdulelah Nashmi, Mohamed, Sabrein H., and Alsohaimi, Ibrahim Hotan

Subjects
SULFONIC acids, BEER-Lambert law, WATER utilities, WATER quality, AQUEOUS solutions, DRINKING water, CHEMICAL preconcentration
Abstract

A selective, facile, and highly efficient spectrophotometric approach was established for the determination of 1,4-dioxane in drinking water quantitatively. This approach depends on the reaction selectively of 1,4-dioxane with 1-Amino-2-naphthol-4-sulphonic acid (AHSA) to give an instantly complex measured at 340 nm. The maximum spectra development with high intensity of dioxane-AHSA complex was obtained at 15 min. Variable parameters that affecting the dioxane-AHSA efficacy were estimated and optimised. Under optimal conditions, the dioxane-AHSA complex obeyed Beer's law within the range of 0.5–15 mg/L of 1,4-dioxane with a regression factor of 0.996 (n = 5) and a detection limit of 16 µg/L. The results of precision and accuracy within-day were ≤2.0% in terms of relative standard deviation (RSD%), which confirmed the reproducibility of the analytical performance. The proposed method was applied successfully in the simultaneous assessment of 1,4-dioxane in an aqueous solution. The accuracy and reliability of the developed approach recommended being applied in all quality control of water companies without the use of sophisticated instrumentation and procedure. [ABSTRACT FROM AUTHOR]

Published
2024
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