Physical, Chemical and Adsorptive Characteristics of Local Oak Sawdust Based Activated Carbons

Alzaydien, Atef S.

doi:10.3923/ajsr.2016.45.56

Cited by 33 publications

(18 citation statements)

References 23 publications

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“…The moisture content of 2.4% was obtained for MTSPAC indicating its suitability, as moisture content of more than 3% is considered not good for standard applications [25]. High moisture content makes the activated carbon become more susceptible to degradation by fungi or other microorganisms [26]. The bulk density of the activated carbon was 0.4 g/ cm 3 , higher than the lower limit of 0.25 g/cm 3 set by the American Water Works Association [27] for granular activated carbon to be of practical use, while a surface area of 864.6 m 2 /g was obtained.…”

Section: Physicochemical and Proximate Characteristics Of Millettia Tmentioning

confidence: 99%

Optimization of the preparation of Millettia thonningii seed pods activated carbon for use in the remediation of dye-contaminated aqueous solutions

et al. 2019

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An increasing research interest in the use of waste-derived activated carbon in the remediation of contaminated water as a renewable alternative to commercial activated carbon has been noted. This research evaluates the optimization of the preparation of activated carbon from Millettia thonningii seed pods for application in the removal of synthetic dyes from aqueous solutions. The Box-Behnken experimental design, a subset of response surface methodology is employed in this research as it provides an economical strategy to optimize the process using a minimal number of experiments. The effect of preparation factors such as activation temperature, activation time and impregnation ratio on the preparation process was evaluated and these conditions optimized by maximizing the activated carbon yield and the adsorption efficiencies of two synthetic dyes, Basic Violet 3 and Basic Blue 9. The optimal conditions established were activation temperature of 400 °C, activation time of 30 min and impregnation ratio of 2.0. The activated carbon yield, Basic Violet 3 and Basic Blue 9 adsorption efficiencies approached 39.12%, 83.25% and 91.05% respectively under these optimal experimental conditions. The optimized activated carbon was characterized via physicochemical and proximate analysis, Fourier transform infrared spectroscopy and scanning electron microscopy. Millettia thonningii seed pods activated carbon produced at the optimum activation conditions possessed desirable properties such as low ash content, low moisture content and suitable bulk density. The activated carbon also holds great potential for application in the removal of hazardous synthetic dyes from wastewater. Keywords Activated carbon • Optimization • Desirability function • Box-Behnken design • Millettia thonningii Abbreviations RSM Response surface methodology BBD Box-Behnken design°C Degrees centigrade OFAT One factor at a time BV3 Basic Violet 3 BB9 Basic Blue 9 MTSP Millettia thonningii seed pods MTSPAC Millettia thonningii seed pods activated carbon ANOVA Analysis of variance FTIR Fourier transform infrared A Activation temperature B Activation time C Impregnation ratio Y 1 Activated carbon yield Y 2 Basic Violet 3 adsorption efficiency Y 3 Basic Blue 9 adsorption efficiency D Desirability function DF Degrees of freedom Adj SS Adjusted sum of squares Adj MSS Adjusted mean of sum of squares

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Section: Physicochemical and Proximate Characteristics Of Millettia Tmentioning

confidence: 99%

Optimization of the preparation of Millettia thonningii seed pods activated carbon for use in the remediation of dye-contaminated aqueous solutions

et al. 2019

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“…Figure 5 is FTIR analysis for the TiO 2 particles capped without and with 5 wt% of PAA and SHMP stabilizers, respectively, after dispersing in DI-water via sonication. As viewed from the spectrum, SHMP and PAA stabilizers displayed a strong absorption band at 1650 cm −1 and 1250 cm −1 , respectively, indicating -C=O and -P=O stretching vibration for carboxylic acids and phosphoric acid [28]; meanwhile, the FTIR spectrum of TiO 2 particles showed intense broadband in the vicinity of 400 to 800 cm −1 [29]. These findings proved that stabilizers were adsorbed onto the surface of TiO 2 particles.…”

Section: Concentration Of Tio 2 Nanoparticles In Aqueous Solutionmentioning

confidence: 56%

Dispersion of Titanium Oxide Nanoparticles in Aqueous Solution with Anionic Stabilizer via Ultrasonic Wave

Tsai

Kao

et al. 2016

Journal of Nanoparticles

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This paper aims to reveal the effects of odium hexametaphosphate (SHMP) and polyacrylic acid (PAA) on dispersion of TiO 2 (P25) nanopowder in de-ionic water through ultrasonic horn. We characterized TiO 2 suspension by transmission electron microscopy (TEM), dynamic light scattering (DLS), Fourier transform infrared spectroscopy (FTIR), zeta potential, and surface contact angle instruments. As shown in the results, particularly, it were noticed that (1) the SHMP has better dispersion than PAA due to electronegativity effect, resulting in that the average particle size of the dispersed titanium dioxide in de-ionic water was roughly 92 nm, and (2) the zeta potential of TiO 2 suspension with SHMP can be achieved by 54 mV at pH value of 7.7, causing stronger electrostatic repulsion in the suspension solution, compared with PAA.

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“…The small molecules like iodine get adsorbed preferably on carbon. It is a measurement of carbonized material activity level (higher number signifies higher activation level) often measured in mg/g 40 …”

Section: Methodsmentioning

confidence: 99%

Synthesis and characterization of activated carbon derived fromTectona grandissawdust via green route

Singh

Mishra

2020

Env Prog and Sustain Energy

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High quality activated carbon was successfully produced from Tectona grandis sawdust by chemical activation using potassium chloride and sodium thiosulphate in a ratio of 1:1.5:1. Surface characterization of sawdust and activated carbon showed the presence of several functional groups such as hydroxyl, ketones, phenols, carboxylic acids, aldehydes and aryl halide together with the heterogeneous surface and extensive porous network as depicted by morphological characterization. It was found that the per cent yield by mass of Tectona grandis sawdust was 52% (SD ± 0.41%). The content of fixed carbon (67.3%) and volatile matter (13.7%) in T. grandis sawdust signifies the ease with which it can be ignited and oxidized. The x‐ray diffraction analysis of activated carbon prepared from T. grandis sawdust indicated amorphous behavior of activated carbon. In the present work, activated carbon possesses 8.76 pH zero‐point charge, 1270 m2/g BET surface area, 0.673 cm3/g total pore volume and 0.42 g/cm3 bulk density.

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Physical, Chemical and Adsorptive Characteristics of Local Oak Sawdust Based Activated Carbons

Cited by 33 publications

References 23 publications

Optimization of the preparation of Millettia thonningii seed pods activated carbon for use in the remediation of dye-contaminated aqueous solutions

Optimization of the preparation of Millettia thonningii seed pods activated carbon for use in the remediation of dye-contaminated aqueous solutions

Dispersion of Titanium Oxide Nanoparticles in Aqueous Solution with Anionic Stabilizer via Ultrasonic Wave

Synthesis and characterization of activated carbon derived fromTectona grandissawdust via green route

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