2017
DOI: 10.1080/09593330.2017.1323957
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Microwave-activated carbons from tucumã (Astrocaryum aculeatum) seed for efficient removal of 2-nitrophenol from aqueous solutions

Abstract: Activated carbons (ACs) prepared from tucumã seed (Astrocaryum aculeatum) were used for 2-nitrophenol removal from aqueous solutions. The ACs were characterized by elemental analysis, FTIR, N adsorption/desorption isotherms, TGA, hydrophobicity/hydrophilicity balance, and total of acidic and basic groups. The ACs showed to have hydrophilic surfaces and they presented high specific surface areas (up to 1318 m g). In batch optimization studies, maximum removal was obtained at pH 7, contact time of 30 min, adsorb… Show more

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Cited by 95 publications
(61 citation statements)
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“…The results of the elemental analysis show that initially precursor biomass exhibit 48.25% carbon, 6.10% hydrogen, 2.35% nitrogen and 39.64% oxygen. After pyrolysis and leaching out of the inorganics (Umpierres et al, 2018;Thue et al, 2016), the carbon content increase to 66.10%, while the hydrogen, nitrogen and oxygen contents decreased to 3.70, 1.95 and 25.45%, respectively. The rise of carbon content after pyrolysis of biomass is attributed to the dominant aromatic structure of the activated carbon.…”
Section: Characterisation Of the Activated Carbonmentioning
confidence: 98%
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“…The results of the elemental analysis show that initially precursor biomass exhibit 48.25% carbon, 6.10% hydrogen, 2.35% nitrogen and 39.64% oxygen. After pyrolysis and leaching out of the inorganics (Umpierres et al, 2018;Thue et al, 2016), the carbon content increase to 66.10%, while the hydrogen, nitrogen and oxygen contents decreased to 3.70, 1.95 and 25.45%, respectively. The rise of carbon content after pyrolysis of biomass is attributed to the dominant aromatic structure of the activated carbon.…”
Section: Characterisation Of the Activated Carbonmentioning
confidence: 98%
“…Activated carbon has been employed extensively as an adsorbent in adsorption processes due to the large surface area, excellent thermal stability, mechanical strength and high volume of pores with a well-developed internal structure of pores. These textural characteristics enhance the adsorption of several adsorbates (Marsh and Rodriguez-Reinoso, 2006;Thue et al, 2017a, b;Umpierres et al, 2018). Activated carbon is usually prepared by physical or chemical activation process (Marsh and Rodriguez-Reinoso, 2006).…”
Section: Introductionmentioning
confidence: 99%
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“…These methods include chemical oxidation [21], biodegradation [22] and physical processes [23,24]. Adsorption is the most applied physical-chemical processes of removal of emerging contaminants from aqueous solutions [25][26][27][28][29], due to its low initial cost for implementation, simplicity and flexibility of the system, easy operation [22,[30][31][32][33].…”
Section: Introductionmentioning
confidence: 99%