Study on Preparation of Activated Carbon from Corncob Furfural Residue with ZnCl&lt;sub&gt;2&lt;/sub&gt; by Microwave Irradiation

Chen, Cong Jin; Wei, Long; Zhao, Peng; Li, Yue; Hu, Hua Yu; Qin, Yu Ben

doi:10.4028/www.scientific.net/amr.152-153.1322

Cited by 9 publications

(5 citation statements)

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“…The chemical activation method refers to the modified biomass carbon adsorbent obtained by mixing furfural residue with a related activator, which is treated by heating, washing, and drying. There are many activators commonly used to modify FR such as zinc chloride [87], basic epichlorohydrin [88], basic isopropanol/citric acid [89], sodium phenolate [90], sodium carbonate [91], and sulfuric acid [4]. The principle is that the functional groups of activated carbon and their own acid and alkali are changed by impregnation, alkali, acid, salt, and other treatment means, so as to mention the adsorption capacity of activated carbon.…”

Section: Preparation Of Biomass Adsorbent Product From Frmentioning

confidence: 99%

A Review on the Transformation of Furfural Residue for Value-Added Products

et al. 2019

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As a by-product of lignocellulosic depolymerization for furfural production, furfural residue (FR) is composed of residual cellulose, lignin, humic acid, and other small amounts of materials, which have high reuse value. However, due to the limitation of furfural production scale and production technology, the treatment of FR has many problems such as high yield, concentrated stacking, strong acidity, and difficult degradation. This leads to the limited treatment methods and high treatment cost of furfural residue. At present, most of the furfural enterprises can only be piled up at will, buried in soil, or directly burned. The air, soil, and rivers are polluted and the ecological balance is destroyed. Therefore, how to deal with furfural residue reasonably needs to be solved. In this review, value-added products for furfural residue conversion are described in detail in the fields of soil culture, catalytic hydrolysis, thermal decomposition, and porous adsorption. The future studies reporting the FR to convert value-added products could find guidance from this review to achieve specific goals.

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Section: Preparation Of Biomass Adsorbent Product From Frmentioning

confidence: 99%

A Review on the Transformation of Furfural Residue for Value-Added Products

et al. 2019

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“…Other techniques, such as microwave radiation for chemical activation [30][31][32] and ultrasound agitation for adsorption, have been investigated. Ultrasound at 20 kHz has been used to restructure active binding sites of sludge to increase Cu(II) adsorption [33].…”

Section: Introductionmentioning

confidence: 99%

Cu(II) Ions Adsorption Using Activated Carbon Prepared from Pithecellobium Jiringa (Jengkol) Shells With Ultrasonic Assistance: Isotherm, Kinetic and Thermodynamic Studies

Muslim

Ellysa

Said³

2017

J. Eng. Technol. Sci.

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Abstract. Adsorption of Cu(II) ions from aqueous solution onto activated carbon (AC) prepared from Pithecellobium jiringa shell (PJS) waste was investigated by conducting batch mode adsorption experiments. The activation with ultrasound assistance removed almost all functional groups in the PJS-AC, while more cavities and pores on the PJS-AC were formed, which was confirmed by FTIR and SEM analyses. The Cu(II) ion adsorption isotherm fitted best to the Freundlich model with average R 2 at 0.941. It was also correlated to the Langmuir isotherm with average R 2 at 0.889. This indicates that physical sorption took place more than chemical sorption. The maximum Cu(II) ion adsorption capacity onto the PJS-AC for a dose of 1 g was 104.167 mg/g at 30 °C and pH 4.5, where the Langmuir constant was 0.523 L/mg, the Freundlich adsorption intensity was 0.523, and the Freundlich constant was 5.212 L/mg. Cu(II) adsorption followed the pseudo second-order kinetic (PSOKE) model with average R 2 at 0.998, maximum adsorption capacity at 96.154 mg/g, PSOKE adsorption rate constant at 0.200 g/mg.min, temperature at 30 °C and pH at 4.5. The changes in enthalpy, entropy, free energy and activation energy were determined, and the results confirmed that Cu(II) adsorption onto the PJS-AC was exothermic chemical adsorption in part. There was a decrease in the degree of freedom and the adsorption was non-spontaneous.

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“…Because microwave heating results in simultaneous internal and volumetric heating, it can be combined with the chemical activation of char to provide the aforementioned advantages while using less energy (Chen et al 2011). In addition to being faster than conventional heating methods, microwave heating involves no direct contact between the heating source and the heated material; the materials are heated from the inside out, waste is minimal, and an increased rate of chemical reactivity can be achieved (Dehdashti et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Preparation of Pinewood- and Wheat Straw-based Activated Carbon via a Microwave-assisted Potassium Hydroxide Treatment and an Analysis of the Effects of the Microwave Activation Conditions

Mao¹,

Zhou²,

Hashisho³

et al. 2014

BioResources

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This study explored the effect of activated carbon preparation conditions on their adsorption performance. Pinewood and wheat straw were used as source materials to prepare activated carbon via a fast activation process using KOH and microwave heating. The iodine numbers and carbon yields were determined to evaluate the adsorption properties of the activated carbon. The effects of various KOH/char mass ratios, particle sizes, humidity levels, and microwave heating times on the physical characteristics of the activated carbon were investigated. The iodine number and yield and SEM images were used to characterize the activated carbon. Small particle sizes, the presence of humidity in the purge gas, and high KOH/char ratios resulted in higher iodine numbers. The best activated carbons were obtained using a KOH/char ratio of 3.0, a microwave power of 600 W, a radiation time of 30 min, and a particle size of 0.1 to 0.42 mm in a humid environment; these carbons showed iodine numbers of 2208 mg/g (pinewood activated carbon) and 1420 mg/g (wheat straw activated carbon), with carbon yields of 73% and 52%, respectively. Longer microwave heating times increased the iodine number. The iodine numbers and yields of the pinewood activated carbons were much higher than those of their wheat straw counterparts.

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Study on Preparation of Activated Carbon from Corncob Furfural Residue with ZnCl<sub>2</sub> by Microwave Irradiation

Cited by 9 publications

References 1 publication

A Review on the Transformation of Furfural Residue for Value-Added Products

A Review on the Transformation of Furfural Residue for Value-Added Products

Cu(II) Ions Adsorption Using Activated Carbon Prepared from Pithecellobium Jiringa (Jengkol) Shells With Ultrasonic Assistance: Isotherm, Kinetic and Thermodynamic Studies

Preparation of Pinewood- and Wheat Straw-based Activated Carbon via a Microwave-assisted Potassium Hydroxide Treatment and an Analysis of the Effects of the Microwave Activation Conditions

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