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AuthorMarrakchi, F.
AuthorHameed, B.H.
AuthorBouaziz, Mohamed
Available date2022-03-23T06:05:26Z
Publication Date2020
Publication NameJournal of Environmental Chemical Engineering
ResourceScopus
Identifierhttp://dx.doi.org/10.1016/j.jece.2020.104199
URIhttp://hdl.handle.net/10576/28520
AbstractThe K2CO3 activation of defatted olive cake in N2 atmosphere was attempted for activated carbon (DOC-AC) preparation to test its ability for the adsorption of methylene blue (MB) and acid blue 29 (AB 29). The optimum conditions obtained by Box–Behnken design was 3.0 g/g impregnation ratio, 800 °C activation temperature, and 120 min activation time. These conditions led to 20.84 % carbon yield and 98.92 % MB, and 94.63 % AB 29 removal. The best DOC-AC showed a highly porous structure with 988.75 m2 /g SBET and 0.53 cm3 /g total pore volume. Batch mode adsorption was performed at different initial dye concentrations (25–400 mg/L), pH (3–11), temperature (30–50 °C), and contact time (0–26 h). The kinetic and equilibrium adsorption data of both dyes were fitted to pseudo-second-order and Langmuir models, respectively. Monolayer adsorption capacities were 359.38 mg/g for MB and 157.58 mg/g for AB 29. After six successive regeneration cycles, the adsorption efficiency for both dyes was > 70 %, indicating good potential of the DOC-AC for commercial applications.
Languageen
PublisherElsevier Ltd
SubjectAdsorption
Defatted olive cake
Isotherms
Kinetics
Potassium carbonate activation
Reusability
TitleMesoporous and high-surface-Area activated carbon from defatted olive cake by-products of olive mills for the adsorption kinetics and isotherm of methylene blue and acid blue 29
TypeArticle
Issue Number5
Volume Number8
dc.accessType Abstract Only


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