دورية أكاديمية

Efficient Cr(VI) sequestration from aqueous solution by chemically modified Garcinia kola hull particles: characterization, isotherm, kinetic, and thermodynamic studies.

التفاصيل البيبلوغرافية
العنوان: Efficient Cr(VI) sequestration from aqueous solution by chemically modified Garcinia kola hull particles: characterization, isotherm, kinetic, and thermodynamic studies.
المؤلفون: Popoola LT; Separation Processes Research Laboratory, Department of Chemical and Petroleum Engineering, Afe Babalola University, Ado-Ekiti, Ekiti State, Nigeria. ltpopoola@abuad.edu.ng.
المصدر: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2023 Oct; Vol. 30 (50), pp. 109751-109768. Date of Electronic Publication: 2023 Sep 30.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Springer Country of Publication: Germany NLM ID: 9441769 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1614-7499 (Electronic) Linking ISSN: 09441344 NLM ISO Abbreviation: Environ Sci Pollut Res Int Subsets: MEDLINE
أسماء مطبوعة: Publication: <2013->: Berlin : Springer
Original Publication: Landsberg, Germany : Ecomed
مواضيع طبية MeSH: Garcinia kola* , Water Pollutants, Chemical*/chemistry, Kinetics ; Thermodynamics ; Chromium/chemistry ; Adsorption ; Water/chemistry ; Hydrogen-Ion Concentration
مستخلص: There is a need for the removal of hexavalent chromium from contaminated water prior to its discharge into the environment, as part of industrial effluents, due to its toxic nature. In this present study, an adsorbent prepared via chemical modification of Garcinia kola hull particles (GK-HP) using NaOH was applied for Cr(VI) sequestration from aqueous solution. Both the raw (rGK-HP) and chemically modified Garcinia kola hull particles (cMGK-HP) were characterized using BET, SEM, XRD, FTIR, TGA, and EDS. The effects of pH, contact time, adsorbent dose, adsorbate initial concentration, and temperature on Cr(VI) sequestration were examined. The adsorbent, cMGK-HP, proved to be more effective for the adsorption process than rGK-HP with 96.25% removal efficiency at a pH of 2, a contact time of 60 min, an adsorbent dose of 5 g/L, Cr(VI) initial concentration of 20 mg/L and a temperature of 40°C. Isotherm and kinetic studies showed experimental data to be well-fitted with Langmuir isotherm and follow the pseudo-second-order kinetic model. The thermodynamic study revealed adsorption nature to be feasible, occur via physisorption, spontaneous, and exothermic. Changes in morphological structure, textural property, spectral peak, phase composition, and chemical composition of adsorbents before and after Cr(VI) sequestration from solution were proved by SEM, BET, FTIR, XRD, and EDS analyses, respectively. cMGK-HP possessed excellent reusability attribute and high thermal stability as shown by TGA. In conclusion, the adsorption capacity of cMGK-HP is better than many other adsorbents generated from agrowastes used in previous studies for Cr(VI) removal.
(© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
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فهرسة مساهمة: Keywords: Chemical modification; Chromium; Garcinia kola; Kinetic; Thermodynamic
المشرفين على المادة: 18540-29-9 (chromium hexavalent ion)
0 (Water Pollutants, Chemical)
0R0008Q3JB (Chromium)
059QF0KO0R (Water)
تواريخ الأحداث: Date Created: 20230930 Date Completed: 20231106 Latest Revision: 20231107
رمز التحديث: 20231107
DOI: 10.1007/s11356-023-29848-0
PMID: 37777702
قاعدة البيانات: MEDLINE
الوصف
تدمد:1614-7499
DOI:10.1007/s11356-023-29848-0