Academic Journal
Mechanochemically improved surface properties of activated carbon cloth for the removal of As(V) from aqueous solutions
| العنوان: | Mechanochemically improved surface properties of activated carbon cloth for the removal of As(V) from aqueous solutions |
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| المؤلفون: | Ljiljana Lj. Matović, Nikola S. Vukelić, Uroš D. Jovanović, Ksenija R. Kumrić, Jugoslav B. Krstić, Biljana M. Babić, Anđelka B. Đukić |
| المصدر: | Arabian Journal of Chemistry, Vol 12, Iss 8, Pp 4446-4457 (2019) |
| بيانات النشر: | Elsevier, 2019. |
| سنة النشر: | 2019 |
| المجموعة: | LCC:Chemistry |
| مصطلحات موضوعية: | Chemistry, QD1-999 |
| الوصف: | Modified activated carbon cloth is prepared by mechanochemical modification of viscose rayon carbon cloth. The effects of different milling atmospheres, in the air and inert conditions, were investigated. Changes in kind and number of acidic and basic surface groups on the surface of activated carbon cloth, upon modification, as well as before and after the sorption of arsenic were determined. Higher number of basic groups responsible for the removal of arsenic ions was achieved by modification under inert conditions. Breakage and collapse of cylindrical fibers, decrease of particle sizes, change in the shape and consistency of the particles, as well as increase of microstructural disorder i.e. the loss of turbostratic structure occurred upon milling. pHPZC values increased from 4.46 to 5.04 and 5.77 after the air and inert milling, respectively. Adsorption followed pseudo second order kinetics with chemisorption as rate-controlling step. Langmuir isotherm best fit the equilibrium data and maximum adsorption capacity is 5.5 mg g−1 at a pH value close to 7.0, typical for groundwater. The mechanism of arsenic adsorption onto activated carbon cloth milled in inert atmosphere involved electrostatic and dispersive interactions between arsenic ions and carbon particles in wide pH range (from 2 to 10). Keywords: Activated carbon cloth, Adsorption, Arsenic removal, Mechanochemical activation, Basic surface groups |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1878-5352 82329249 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S1878535216301022; https://doaj.org/toc/1878-5352 |
| DOI: | 10.1016/j.arabjc.2016.07.004 |
| URL الوصول: | https://doaj.org/article/6e82329249a74210aee356acb454bb18 |
| رقم الانضمام: | edsdoj.6e82329249a74210aee356acb454bb18 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 18785352 82329249 |
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| DOI: | 10.1016/j.arabjc.2016.07.004 |