Journal
JOURNAL OF NATURAL FIBERS
Volume 19, Issue 13, Pages 5211-5226Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/15440478.2021.1875365
Keywords
Pineapple crown; activated carbon; methylene blue; adsorption; isortherms; macroporous
Categories
Funding
- Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro [E-26 /010.001800 / 2015, E-26 / 010.101232 / 2018]
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The study utilized pineapple crown waste to produce activated carbon for methylene blue removal, demonstrating its suitability as a precursor and high adsorption capacity.
The use of agro-industrial residues to produce biomass-based activated carbon to remove methylene blue may be one of the most promising alternatives to solve industrial wastewater problems, as well as agro-industrial waste. This work purposes an alternative for the development of pineapple crown waste (PC) as activated carbon (ACPC) by chemical activation using NaOH and pyrolysis for the removal of methylene blue (MB). The material was characterized by CHNS-O, SEM, BET, XRD, FTIR, and TGA. For the non-linear study of the Langmuir, Freundlich, and Temkin isotherms, the parameter investigated was the initial concentration (10, 25, 50, 100, 250, and 500 mg.L-1). Experimental results revealed the suitability of pineapple crown waste to be used as a precursor for activated carbon. According to the Langmuir non-linear model, ACPC presented a maximum adsorption capacity of 292 mg.g(-1). The good MB removal capacity by ACBP is due to pores structure. Pineapple crown waste can be used as an alternative cleaner for an ecologically adsorbent.
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