Activated carbon from bamboo (<i>Bambusa vulgaris</i>) waste using CO2 as activating agent for adsorption of methylene blue and phenol

Abstract

Activated carbon from bamboo (Bambusa vulgaris) waste using CO 2 as activating agent for adsorption of methylene blue and phenolCarvão ativado a partir de resíduos de bambu (Bambusa vulgaris) utilizando CO 2 como agente ativante para adsorção de azul de metileno e fenol Abstract Bamboo (Bambusa vulgaris) wastes were used as raw material for producing activated carbon. The materials were collected and turned into activated carbons by carbonization (500 °C, 1.67 °C.min -1 , 60 min) and activation (800 °C, 10 °C.min -1 , 60 min) processes with CO 2 (100 mL.min -1 ). The obtained material (CO 2 AC) was characterized by its yield, elemental analysis, ash content, surface area (S BET ), Boehm titration method, scanning electron microscopy and used as adsorbent for removing the methylene blue and phenol contaminants. The Langmuir and Freundlich isotherm models were selected for understanding the adsorption process. CO 2 AC produced showed yield of 21.6%, carbon content of 82.13% and S BET of 856.78 m 2 .g -1 , presenting rapid removal and high adsorption capacity for methylene blue (298.82 mg.g -1 ) and phenol (558.29 mg.g -1 )Santana, G. M.; Trugilho, P. F.; Borges, W. M. S.; Bianchi, M. L.; Paes, J. B.; Nobre, J. R. C.; Morais, R. M. 770

Characterization of ball-milled bamboo-based activated carbon treated with KMnO4 and KOH as activating agents

“…This result was higher than that of reported by the following researchers. Santana et al (2019) reported that iodine number of bamboo activated carbon with activating agent H3PO4/H2 was 748 mg/g. Huang et al (2014) reported that iodine number of bamboo activated carbon with activating agent Nitrogen gas and carbonization temperature of 1000 °C was 78.6 mg/g.…”

“…This result was lower than that of reported by other researchers. Hameed et al (2007) reported that methylene blue adsorption of bamboo activated carbon with activating agent KOH/CO2 was 454 mg/g, whereas Santana et al (2019) reported that methylene blue adsorption of bamboo activated carbon with activating agent CO2 was 299 mg/g. Meanwhile, reported that methylene blue adsorption of bamboo activated carbon with activating agent phosphoric acid was 320 mg/g.…”

A systematic literature review on the effects of synthesis conditions to the physicochemical properties of activated carbons and their performance in methylene blue adsorption

“…Next, 93 full-text articles were reviewed, out of which 44 studies were eligible for the qualitative analysis according to the established inclusion criteria. The 44 papers were composed of articles containing the physicochemical and adsorption properties of ACs from the three selected biomass sources with the respective distributions: coconut shell [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22], bamboo [16,[23][24][25][26][27][28][29][30][31][32][33][34] and rice husk [35][36][37][38][39][40][41][42][43][44][45][46][47][48]. The analyses were divided into two categories: (a) synthesis conditions affecting the differences in physicochemical properties of ACs and (b) effects of physicochemical properties onto MB adsorption performance.…”

Production, application and market of activated carbon in Brazil: a review

“…The diversity, low cost and availability of biomass and waste, precursors of activated carbon in the country contribute to this. Researches have been successfully developed in order to investigate the viability of these potential precursors for the production of activated carbon (Linhares et al 2016;Santana et al 2019;Morais et al 2019a;Morais et al 2019b;Morais et al 2019c). SWOT analysis for activated carbon production in Brazil SWOT analysis, a technique to assess the positive and negative points of a specific scenario, was conducted to analyse the activated carbon production in Brazil (Costa Júnior et al 2021).…”