Production of activated carbon from olive bagasse by physical activation

Demiral, Hakan; Demiral, İlknur; Karabacakoğlu, Belgin; Tümsek, Fatma

doi:10.1016/j.cherd.2010.05.005

Cited by 158 publications

(77 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The most important property of the activated carbon is its adsorptive capacity, which in general is proportional to the surface area [24,25]. Carbon's highly porous nature provides a large surface area for absorption.…”

Section: Results and Discussion Carbon Compositionmentioning

confidence: 99%

The Potential of Coconut Shell Powder (Csp) and Coconut Shell Activated Carbon (Csac) Composites as Electromagnetic Interference (Emi) Absorbing Material

Jabal¹,

Yew²,

Hoon³

2016

MJAS

View full text Add to dashboard Cite

Agriculture waste is potentially useful as an alternative material to absorb and attenuate electromagnetic interference (EMI). This research highlights the use of coconut shell powder (CSP) and coconut shell activated carbon (CSAC) as raw materials with epoxy resin and amine hardener composite to absorb microwave signals over frequency of 1 -8 GHz. In order to investigate the suitability of these raw materials as EMI absorbing material, carbon composition of the raw materials is determined through CHNS Elemental Analysis. The surface morphology of the raw materials in term of porosity is investigated by using TM3000 Scanning Electron Microscope (SEM). The complex permittivity of the composites is determined by using high temperature dielectric probe in conjunction with Network Analyzer. From the result, the Carbon% of CSP and CSAC is 46.70% and 84.28% respectively. In term of surface morphology, the surface porosity of CSP and CSAC is in the range of 2 µm and 1µm respectively. For the dielectric properties, the dielectric constant and the dielectric loss factor for CSP and CSAC is 4.5767 and 64.8307and 1.2144 and 13.8296 respectively. The materials more potentially useful as substitute materials for electromagnetic interference (EMI) absorbing are discussed. Keywords: agricultural wastes, dielectric properties, carbon composition AbstrakSisa pertanian mempunyai potensi untuk digunakan sebagai bahan alternatif untuk menyerap atau melemahkan gangguan elektromagnatik (EMI). Kajian ini menekankan kepada penggunaan serbuk tempurung kelapa (CSP) dan karbon teraktif tempurung kelapa(CSAC) sebagai bahan mentah dengan campuran resin epoksi dan komposit penguat amina untuk menyerap gelombang mikro dalam frekuensi 1 -8 GHz. Bagi mengkaji kesesuaian bahan mentah sebagai bahan penyerap gelombang mikro, komposisi karbon dalam bahan mentah ditentukan mengunakan analisis unser CHNS. Liang permukaan bahan mentah pula dikaji mengunakan mikroskop pengimbas elektron TM3000 (SEM). Ketelusan kompleks bagi bahan campuran diukur menggunakan prob dielektrik suhu tinggi dan alat analisis rangkaian. Daripada keputusan yang diperolehi, peratusan karbon dalam CSP dan CSAC adalah sebanyak 46.70 % dan 84.28 %. Manakala dari segi liang permukaan pula, keliangan CSP dan CSAC masing -masing berada dalam lingkungan 2um dan 1um.Bagi sifat dielektrik, pemalar dielektrik untuk CSP dan CSAC masing -masing adalah 4.5767 dan 64.8307. Bagi pembelauan dielektrik, nilai untuk CSP dan CSAC masing -masing adalah 1.2144 dan 13.8296. Isu bahan yang lebih berpotensi untuk digunakan sebagai bahan penyerap gangguan elektromagnatik (EMI) dibincangkan.

show abstract

Section: Results and Discussion Carbon Compositionmentioning

confidence: 99%

The Potential of Coconut Shell Powder (Csp) and Coconut Shell Activated Carbon (Csac) Composites as Electromagnetic Interference (Emi) Absorbing Material

Jabal¹,

Yew²,

Hoon³

2016

MJAS

View full text Add to dashboard Cite

show abstract

“…Pode-se observar um comportamento linear entre o burnoff e o tempo de ativação. Comportamento semelhante também foi obtido por Demiral et al (2011) ao estudar a influência dos tempos de ativação sobre o burn-off na produção de carvões ativados a partir de bagaço de oliva utilizando ativação física com vapor. Na Tabela 3 estão apresentadas as caracterizações da porosidade, índice de iodo e adsorção de azul de metileno dos carvões ativados preparados com diferentes tempos de ativação.…”

Section: Efeito Do Tempo De Ativação Sobre As Características Do Carvunclassified

Produção E Caracterização De Carvão Ativado Granulado E Bio-Óleo a Partir Dos Resíduos Da Indústria Cervejeira

Gonçalves¹,

Nakamura²,

Veit³

et al. 2015

Anais Do XX Congresso Brasileiro De Engenharia Química

View full text Add to dashboard Cite

“…Em seguida, esses materiais são secos e carbonizados (pirólise) a temperaturas moderadas (400-600 ºC) em atmosfera inerte para produzir o carvão ativado final. No processo de ativação física, gás nitrogênio ou dióxido de carbono são utilizados para a oxidação da matéria carbonosa em temperaturas que podem chegar até 1000 ºC [3,4].…”

Section: Introductionunclassified

Estudo da produção de carvão ativado a partir do resíduo de casca da acácia negra com e sem ativação química

Linhares¹,

Marcílio²,

Melo³

2016

SCI. CUM IND

View full text Add to dashboard Cite

ResumoO objetivo deste trabalho é estudar a viabilidade do uso de resíduo da casca de acácia negra (RCAN) gerado na extração do tanino, para a produção de carvão ativado. No sul do Brasil cerca de 250 toneladas/dia de cascas são geradas pelo setor industrial e uma grande parte deste material é destinada à compostagem ou disposta em aterros. Visando aproveitar este resíduo foram realizados experimentos de pirólise e ativação com H 3 PO 4 , em atmosfera controlada. Os constituintes do RCAN foram avaliados por análise elementar e a caracterização dos carvões obtidos foi realizada por análises termogravimétricas (TGA), a área superficial e volume de poros (métodos BET e BJH), microscopia eletrônica de varredura (MEV) e espectroscopia de energia dispersiva (EDS). A análise elementar do RCAN indicou um teor de carbono de 51,4 % e a área superficial foi de aproximadamente 906 m²/g para o carvão ativado com H 3 PO 4 , valor este superior à área superficial do carvão ativado comercial (CAC). Nas imagens de MEV pode se observar a estrutura porosa bem desenvolvida do carvão ativado quimicamente o que corrobora com a elevada área superficial determinada pelo método BET. Palavras-chaveCarvão ativado; resíduo; acácia negra; ativação química.Study of activated carbon production from the black wattle shell waste with and without chemical activation AbstractThe purpose of this work is to study the viability of using waste of black wattle shell (RCAN) generated in the tannin extraction process, for activated carbon production. In southern of Brazil about 250 tons/day of shells are generated by the industrial sector and much of this material is intended for composting or disposed in landfills. Aiming to use this waste was carried out pyrolysis and activation experiments with H 3 PO 4 in a controlled atmosphere. The constituents of RCAN were evaluated by elemental analysis and coals characterization was obtained by thermogravimetric analysis (TGA), the surface area and pore volume by the BET and BJH method, scanning electron microscopy (MEV) and energy dispersive spectroscopy (EDS). Elemental analysis of RCAN presented a 51.4% carbon and the surface area was approximately 906 m²/g for the activated carbon with H 3 PO 4 , value higher than the surface area of activated carbon (CAC). In the MEV images can be seen well-developed porous structure of chemically activated carbon which is in agreement with the high surface area presented by BET analysis.

show abstract

Production of activated carbon from olive bagasse by physical activation

Cited by 158 publications

References 36 publications

The Potential of Coconut Shell Powder (Csp) and Coconut Shell Activated Carbon (Csac) Composites as Electromagnetic Interference (Emi) Absorbing Material

The Potential of Coconut Shell Powder (Csp) and Coconut Shell Activated Carbon (Csac) Composites as Electromagnetic Interference (Emi) Absorbing Material

Produção E Caracterização De Carvão Ativado Granulado E Bio-Óleo a Partir Dos Resíduos Da Indústria Cervejeira

Estudo da produção de carvão ativado a partir do resíduo de casca da acácia negra com e sem ativação química

Contact Info

Product

Resources

About