UTILIZATION OF ACRYLIC FIBROUS WASTE FOR PREPARATION OF ACTIVATED CARBON NANOPARTICLES

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

UTILIZATION OF ACRYLIC FIBROUS WASTE FOR PREPARATION OF ACTIVATED CARBON NANOPARTICLES

Popis výsledku v původním jazyce

In present study, activated carbon is prepared by controlled pyrolysis of acrylic fibrouswaste under the layer of charcoal using physical activation in high temperaturefurnace. The main objective is to study the effect of four factors (i.e. final pyrolysistemperature, holding time at final temperature, heating rate per hour, and numberof steps) on carbonization behavior of acrylic fibrous waste. The Box-Behnken designand response surface modeling was performed to get higher specific surface areaand higher electrical conductivity. The development of porous morphology havinghigher surface area is found to increase with increase in pyrolysis temperature,increase in number of steps, decrease in holding time and decrease in heating ratetill some optimum value. This behavior is attributed to gradual reaction of atmosphericoxygen with carbonized acrylic fibrous waste, which resulted into the opening ofpreviously inaccessible pores through the removal of tars and disorganised carbon.Moreover, these four factors also found to have significant effect on the developmentof electrical conductivity of activated carbon. Later on, the carbonized acrylic fibrouswaste was pulverized in dry conditions by high energy planetary ball milling to getactivated carbon nanoparticles. In addition to refinement of size, the specific surfacearea and electrical conductivity of pulverized carbon particles was found to increasewith increase in milling time. The activated carbon particles obtained after three hoursof dry milling revealed the particle size of 521 nm, the electrical conductivity of 21.78s/m for 0.5 wt % concentration of aqueous dispersion and the specific surface areaof 432 m2/g.

Název v anglickém jazyce

UTILIZATION OF ACRYLIC FIBROUS WASTE FOR PREPARATION OF ACTIVATED CARBON NANOPARTICLES

Popis výsledku anglicky

In present study, activated carbon is prepared by controlled pyrolysis of acrylic fibrouswaste under the layer of charcoal using physical activation in high temperaturefurnace. The main objective is to study the effect of four factors (i.e. final pyrolysistemperature, holding time at final temperature, heating rate per hour, and numberof steps) on carbonization behavior of acrylic fibrous waste. The Box-Behnken designand response surface modeling was performed to get higher specific surface areaand higher electrical conductivity. The development of porous morphology havinghigher surface area is found to increase with increase in pyrolysis temperature,increase in number of steps, decrease in holding time and decrease in heating ratetill some optimum value. This behavior is attributed to gradual reaction of atmosphericoxygen with carbonized acrylic fibrous waste, which resulted into the opening ofpreviously inaccessible pores through the removal of tars and disorganised carbon.Moreover, these four factors also found to have significant effect on the developmentof electrical conductivity of activated carbon. Later on, the carbonized acrylic fibrouswaste was pulverized in dry conditions by high energy planetary ball milling to getactivated carbon nanoparticles. In addition to refinement of size, the specific surfacearea and electrical conductivity of pulverized carbon particles was found to increasewith increase in milling time. The activated carbon particles obtained after three hoursof dry milling revealed the particle size of 521 nm, the electrical conductivity of 21.78s/m for 0.5 wt % concentration of aqueous dispersion and the specific surface areaof 432 m2/g.

Druh

O - Ostatní výsledky

CEP obor

JJ - Ostatní materiály

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů