Preparation and characterization of activated carbon from a new raw lignocellulosic material: Flamboyant (Delonix regia) pods

Vargas, Alexandro M.M.; Cazetta, André L.; Garcia, Clarice A.; Moraes, Juliana C.G.; Nogami, Eurica M.; Lenzi, Ervim; Costa, Willian Ferreira da; Almeida, Vitor C.

doi:10.1016/j.jenvman.2010.09.013

Cited by 130 publications

(38 citation statements)

References 31 publications

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“…The washed flamboyant pods were dried at 80 o C for 24 hrs, ground and separated using sieve size of 225 µm. The uniform particle size biomaterial was subjected to carbonization process in a muffle furnace at a rate of 20 o C/min from room temperature to 500 o C and maintained at this temperature for 1.5 hours (Vargas et al, 2011). A sample (400 g) of the calcined flamboyant pod was soaked in an excess of 0.2 M H 2 SO 4 (purity 85%) solution for 24 hours.…”

Section: A Preparation Of Adsorbentmentioning

confidence: 99%

Removal of Lead and Chromium from Aqueous Solution onto Flamboyant (<i>Delonix regia) Pod Activated Carbon

Mustapha¹,

Adewoye²,

Aderibigbe³

et al. 2018

Nig. J. Technol. Dev.

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ABSTRACT:The contamination of water by potentially toxic elements is considered a global problem. It calls for a safe, economic and technological approach in order to curb and prevent the devastating effect of the menace on both human and the aquatic life. In the light of this background, the adsorption potential of flamboyant pod activated carbon (FPAC) for the removal of chromium and lead from aqueous solution was studied. The effect of contact time, pH, initial concentration as well as adsorbent dosage on the removal efficiency of both metal ions was investigated via batch adsorption. Characterization of the FPAC adsorbent was done using Brunaur Emmett Teller and Fourier transform infrared spectroscopy. The maximum adsorption capacity Q e was found to be 34.48 and 16.13 mg/g for Pb (II) and Cr (VI), respectively. The Langmuir isotherm model showed a better fit to the equilibrium data than the Freundlich isotherm model. The mechanism of adsorption for both metal ions onto the FPAC agrees well with pseudo second order kinetic model. The results showed that FPAC has excellent adsorption properties and thus can be used as an effective low-cost adsorbent for the removal of lead and chromium ions from aqueous solution.

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Section: A Preparation Of Adsorbentmentioning

confidence: 99%

Removal of Lead and Chromium from Aqueous Solution onto Flamboyant (<i>Delonix regia) Pod Activated Carbon

Mustapha¹,

Adewoye²,

Aderibigbe³

et al. 2018

Nig. J. Technol. Dev.

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“…The bands around 1,384 and 1,440 cm -1 displayed in all spectra are assigned to C-H vibration for -CH 3 -and -CH 2 = (El-Hendawy 2009). The FTIR bands in the region between 1,430 and 1,660 cm (Vargas et al 2011). The FTIR analysis of the adsorbents revealed the presence of many functional groups such as hydroxyl groups, carbonyl group, ethers, and aromatic compounds capable of binding the adsorbate molecules present in solution.…”

Section: Effect Of Temperature and Adsorption Thermodynamicsmentioning

confidence: 99%

Pentachlorophenol (PCP) adsorption from aqueous solution by activated carbons prepared from corn wastes

Abdel‐Ghani

El-Chaghaby

Zahran³

2013

Int. J. Environ. Sci. Technol.

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Corn wastes generated from starch and glucose production industry were used for the preparation of activated carbons. The prepared activated carbons and a commercial activated carbon were evaluated for their capability of adsorbing pentachlorophenol (PCP) from aqueous solution. Batch adsorption experiments were performed under different operating conditions including pH (2-8), adsorbent dosage (0.5-4.0 g/l), initial PCP concentration (10-100 mg/l), contact time (30-300 min), and temperature (25-45°C). The kinetics and equilibrium models describing the adsorption of PCP by the prepared adsorbents were obtained. The adsorption of PCP by corn waste-based adsorbents was found to follow the secondorder kinetics and the Freundlich equilibrium models. The intraparticle diffusion mechanism was successfully fitted to the obtained experimental data. Thermodynamic studies indicated that the adsorption process was exothermic. The adsorbents surface characterization revealed the presence of many functional groups capable of binding the adsorbate molecules. The study results suggest the possible use of corn wastes as a starting material for the production of activated carbon, thus lowering the costs of wastewater treatment processes.

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“…Similar results were reported by Cukierman et al [4], and they suggested that the decomposition of biomass materials takes place through a complex network of reactions. Antal Jr. [5] investigated the thermal degradation of lignocellulosic material and found that the hemicellulose degrades in the temperature range 325-375 ∘ C, while lignin degradation occurs more slowly over the wide temperature range 250-500 ∘ C. In order to detect the effect of the phosphoric acid impregnation ratio on the weight loss of activated carbon, weight losses of CHMW-MO-AC with different IR are illustrated in Figure 1 ∘ C for the CHMW-MO-AC, due to moisture elimination [6] and pyrolysis of some residual organic matter [7]. Some researchers [8,9] suggested that the most acidic oxygen-containing groups (carboxylic, phenolic) of synthetic chemically activated carbons begin to decompose at temperatures above 250 ∘ C. For CHMW-MO-AC (IR = 2.5), the peak observed at approximately 600 ∘ C might be attributed to acidic oxygencontaining groups pyrolysis.…”

Section: Chmw-mo Propertymentioning

confidence: 99%

Activated Carbon from the Chinese Herbal Medicine Waste by H₃PO₄ Activation

Chen

Xin

et al. 2015

Journal of Nanomaterials

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Large amounts of Chinese herbal medicine wastes produced by the medicinal factories have been mainly landfilled as waste. In this study, via phosphoric acid activation, a Chinese herbal medicine waste from Magnolia officinalis (CHMW-MO) was prepared for activated carbon (CHMW-MO-AC). The effect of preparation conditions (phosphoric acid/CHMW-MO impregnation ratio, activation temperature, and time) of activated carbon on yield of CHMW-MO-AC was investigated. The surface area and porous texture of the CHMW-MO-ACs were characterized by nitrogen adsorption at 77 K. The BET and pore volume were achieved in their highest value of 920 m 2 /g and 0.703 cm 3 /g, respectively. Thermal gravity analysis and scanning electron microscope images showed that CHMW-MO-ACs have a high thermal resistance and pore development. The results indicated that CHMW-MO is a good precursor material for preparing activated carbon, and CHMW-MO-AC with well-developed mesopore volume can be prepared by H 3 PO 4 activation.

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Preparation and characterization of activated carbon from a new raw lignocellulosic material: Flamboyant (Delonix regia) pods

Cited by 130 publications

References 31 publications

Removal of Lead and Chromium from Aqueous Solution onto Flamboyant (<i>Delonix regia) Pod Activated Carbon

Removal of Lead and Chromium from Aqueous Solution onto Flamboyant (<i>Delonix regia) Pod Activated Carbon

Pentachlorophenol (PCP) adsorption from aqueous solution by activated carbons prepared from corn wastes

Activated Carbon from the Chinese Herbal Medicine Waste by H₃PO₄ Activation

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Preparation and characterization of activated carbon from a new raw lignocellulosic material: Flamboyant (Delonix regia) pods

Cited by 130 publications

References 31 publications

Removal of Lead and Chromium from Aqueous Solution onto Flamboyant (<i>Delonix regia) Pod Activated Carbon

Removal of Lead and Chromium from Aqueous Solution onto Flamboyant (<i>Delonix regia) Pod Activated Carbon

Pentachlorophenol (PCP) adsorption from aqueous solution by activated carbons prepared from corn wastes

Activated Carbon from the Chinese Herbal Medicine Waste by H3PO4 Activation

Contact Info

Product

Resources

About

Activated Carbon from the Chinese Herbal Medicine Waste by H₃PO₄ Activation