Effect of the activation method on the properties and adsorption behavior of bagasse fly ash-based activated carbon

Purnomo, Chandra Wahyu; Salim, Chris; Hinode, Hirofumi

doi:10.1016/j.fuproc.2012.04.037

Cited by 42 publications

(30 citation statements)

References 31 publications

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“…On the other side, ACs with well developed surface area and high presence of microporous can also be considered as favorable adsorbents for Ni(II) removal from aqueous solutions due to the small size of Ni(II) species (Ni metallic radius is 0.125 nm). Furthermore it is known that physical activation with steam at higher temperature produces activated carbons with high surface area and high microporous volume [44]. Therefore, both types of physical activation, i.e.…”

Section: Resultsmentioning

confidence: 99%

Preparation, characterization and application of polystyrene based activated carbons for Ni(II) removal from aqueous solution

Gonsalvesh

Маринов

Gryglewicz

et al. 2016

Fuel Processing Technology

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Section: Resultsmentioning

confidence: 99%

Preparation, characterization and application of polystyrene based activated carbons for Ni(II) removal from aqueous solution

Gonsalvesh

Маринов

Gryglewicz

et al. 2016

Fuel Processing Technology

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“…Generally, activated carbon preparation from BFA has been studied intensively using physical (steam and CO 2 ) and chemical (KOH, H 2 O 2 , HCl, EDTA and HNO 3 , etc.) processes, but the practical utilization of this resource as an effective treatment option in sugar and ethanol industries for recycling of waste is limited (Purnomo et al, 2012). Moreover, the efficiency of the adsorption technology of activated carbon depends on the nature of the adsorbent, activating agent and activation condition, which generate different surface areas and pore volumes for the interactions between the adsorbate and adsorbent (Gottipati and Mishra, 2010).…”

Section: Introductionmentioning

confidence: 99%

COD and colour removal from molasses spent wash using activated carbon produced from bagasse fly ash of Matahara sugar factory, Oromiya region, Ethiopia

Nure¹,

Shibeshi²,

Leta³

et al. 2017

WSA

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The aim of this study was to investigate the removal of chemical oxygen demand (COD) and colour from a melanoidin solution using activated carbon produced from bagasse fly ash (BFA). Melanoidins are heterogeneous polymers and major contributors to the dark brown colour of molasses spent wash, which is an extensive cause of environment pollution. The surface area of the BFA was determined as 160.9 ± 2.8m²/g with 90% of particle less than 156.8 µm in size. Characterization of the BFA by Fourier transform infrared spectroscopy (FTIR) showed the presence of hydroxyl and carbonyl functional groups, whereas X-ray diffraction analysis indicated its amorphous nature. Moreover, scanning electron microscopy analysis showed a heterogeneous and irregular shape of pores. Among the adsorption isotherm models analysed, the Freundlich model fitted best to the experimental data, indicating a maximum adsorptive capacity of 124.80 mg/g. The removal of COD and colour from a melanoidin solution with this activated carbon was carried out using an experimental design taking 4 factors into account. These were adsorbent dose, contact time, pH and initial COD concentration, with removal of COD and colour as response variables. COD reduction was influenced by initial COD concentration whereas colour removal was dominated by contact time, which was in line with the findings of principal component analysis . The maximum COD removal recorded was 61.6% at the optimum condition of adsorbent dose of 4 g in 100 mL, contact time of 4 h, pH 8 and initial COD concentration 6 000 mg/L, whereas the decolourization of melanoidin solution was 64% at adsorbent dose of 4 g, contact time 4 h, pH 3 and initial COD concentration 6 000 mg/L. Hence, activated BFA is a promising option for simultaneous removal of COD and colour from molasses spent wash under the stated conditions.

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“…Since around 2008, Indian scientists have attempted the applications of bagasse ash, including activated carbon precursor, ceramic filter and pellet fuel . Publications during 2012–2015 reported some groups in Japan, Indonesia, and Brazil using bagasse ash to produce activated carbon, NaX/NaA zeolite or carbon–zeolite composite . UK scientists in 2011 studied the impact of combustion conditions on the major inorganic species within wheat straw, and proposed application of the ash for potassium silicate and consecutive mesoporous silica MCM‐41 preparation .…”

Section: Introductionmentioning

confidence: 99%

Potassium recovery from the fly ash from a grate boiler firing agro‐residues: effects of unburnt carbon and calcination pretreatment

Wang

Xiao

Wang

et al. 2016

J of Chemical Tech & Biotech

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BACKGROUND The biomass‐fired power in China is mainly fueled by agro‐residue, and is suffering the bottlenecks of feedstock supply, super heater corrosion and nutrient cycle. How to recycle the ash nutrient to farmland is crucial for ecological sustainability. This work investigated potassium recovery from the fly ash of a grate boiler firing agro‐residue using leaching methods. RESULTS The studied ash contains a massive amount of fixed carbon (158.92 mg g−1) and little volatile matter (39.44 mg g−1). The unburnt carbon strongly decreases the concentration (CK) in the leachate and recovery percentage (RPK) of potassium nutrient by 17.6–24.1% and 9.0–18.8%, respectively. Calcination pretreatment in air at 500 °C for 30 min should be employed before leaching to remove the unburnt carbon. Mineralogy analysis shows that low‐temperature pre‐calcination (≤575 °C) does not affect potassium solubility. Under the optimal leaching of calcined ash in water with liquid‐to‐solid ratio 3 for 30 min at room temperature, CK in the leachate, dissolution percentage (DPK) and recovery percentage (RPK) of potassium element reached 17.21 g L−1, 82.0%, and 62.6%, respectively. CONCLUSIONS The fly ash from grate boilers firing agro‐residue is much better than other marginal potash sources. This work is helpful to improve the technology of agro‐residue fired power. © 2016 Society of Chemical Industry

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Effect of the activation method on the properties and adsorption behavior of bagasse fly ash-based activated carbon

Cited by 42 publications

References 31 publications

Preparation, characterization and application of polystyrene based activated carbons for Ni(II) removal from aqueous solution

Preparation, characterization and application of polystyrene based activated carbons for Ni(II) removal from aqueous solution

COD and colour removal from molasses spent wash using activated carbon produced from bagasse fly ash of Matahara sugar factory, Oromiya region, Ethiopia

Potassium recovery from the fly ash from a grate boiler firing agro‐residues: effects of unburnt carbon and calcination pretreatment

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