WITHDRAWN: Preparation and characterization of high surface area activated carbon from Fox nut (Euryale ferox) shell by chemical activation with H3PO4

Surface area characterization of activated carbon from sugarcane baggase by chemical activationAdsorption is one the process with many applications in the industries such as in a separation or in gas storage. In this adsorption, adsorbent selection is the most important thing. One of the adsorbent most suitable for this process is activated carbon. Previous studies show that high surface area of activated carbon can be produced from sugarcane bagasse using activator ZnCl2. The research’s goal is to produce activated carbon from sugarcane bagasse and determine the effects of activator on the surface area of activated carbon produced. Activators used in this research are KOH and ZnCl2 with the mass ratio of activator/carbon are 1/1, 2/1 and 3/1. The results show that The highest surface area, 938,2 m2/g, is obtained by activation using KOH with mass ratio of activator/carbon 3/1, whereas the highest surface area by activation using ZnCl2 is 632 m2/g with mass ratio of activator/carbon 2/1. For comparison, preparation of activated carbon by physical activation is also done and the surface area is 293 m2/g.Keywords: Activated carbon, chemical activation, sugarcane bagasse, KOH, ZnCl2 Abstrak Adsorpsi merupakan salah satu proses yang banyak digunakan dalam industri baik dalam pemisahan maupun untuk penyimpanan gas. Pada proses adsorpsi ini, pemilihan adsorben merupakan hal yang sangat penting. Salah satu jenis adsorben yang sangat cocok untuk proses ini adalah karbon aktif. Penelusuran studi sebelumnya menunjukkan bahwa karbon aktif dengan luas permukaan yang cukup tinggi dapat dibuat dari ampas tebu dengan menggunakan aktivator ZnCl2. Penelitian ini bertujuan untuk menghasilkan karbon aktif dari ampas tebu dengan aktivasi kimia serta mengetahui pengaruh aktivator terhadap luas permukaan karbon aktif yang dihasilkan. Aktivator yang digunakan dalam penelitian ini adalah KOH dan ZnCl2 dengan rasio massa aktivator/massa karbon 1/1, 2/1, dan 3/1. Aktivasi dilakukan pada temperatur 700 oC selama 1 jam. Hasil penelitian menunjukkan bahwa luas permukaan tertinggi sebesar 938,2 m2/g diperoleh dengan aktivasi menggunakan KOH dengan rasio massa aktivator/massa arang 3/1, sedangkan aktivasi dengan menggunakan ZnCl2 diperoleh luas permukaan tertinggi sebesar 632 m2/g dengan rasio massa aktivator/massa arang 2/1. Sebagai pembanding, pada penelitian ini juga dilakukan pembuatan karbon aktif dengan metode aktivasi fisika dan diperoleh luas permukaan karbon aktif sebesar 293 m2/g.Kata kunci: Aktivasi kimia, ampas tebu, karbon aktif, KOH, ZnCl2

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Preparation and characterization of activated carbons from albizia saman pod

Journal of Science and Technology (Ghana) ◽

10.4314/just.v36i3.5 ◽

2017 ◽

Vol 36 (3) ◽

pp. 44-53

Author(s):

G. D. Akpen ◽

M. I. Aho ◽

N. Baba

Keyword(s):

Activated Carbon ◽

Surface Area ◽

Activated Carbons ◽

High Surface ◽

High Surface Area ◽

Volatile Matter ◽

Sieve Analysis ◽

Albizia Saman ◽

Temperature Surface

Activated carbon was prepared from the pods of Albizia saman for the purpose of converting the waste to wealth. The pods were thoroughly washed with water to remove any dirt, air- dried and cut into sizes of 2-4 cm. The prepared pods were then carbonised in a muffle furnace at temperatures of 4000C, 5000C, 6000C ,7000C and 8000C for 30 minutes. The same procedure was repeated for 60, 90, 120 and 150 minutes respectively. Activation was done using impregnationratios of 1:12, 1:6, 1:4, 1:3, and 1:2 respectively of ZnCl2 to carbonised Albizia saman pods by weight. The activated carbon was then dried in an oven at 1050C before crushing for sieve analysis. The following properties of the produced Albizia saman pod activated carbon (ASPAC) were determined: bulk density, carbon yield, surface area and ash, volatile matter and moisture contents. The highest surface area of 1479.29 m2/g was obtained at the optimum impregnation ratio, carbonization time and temperature of 1:6, 60 minutes and 5000C respectively. It was recommended that activated carbon should be prepared from Albizia saman pod with high potential for adsorption of pollutants given the high surface area obtained.Keywords: Albizia saman pod, activated carbon, carbonization, temperature, surface area

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Retransformed graphitic activated carbon from ionic liquid-derived carbon containing nitrogen

Journal of Materials Chemistry A ◽

10.1039/c4ta06212d ◽

2015 ◽

Vol 3 (6) ◽

pp. 2564-2567 ◽

Cited By ~ 8

Author(s):

Mok-Hwa Kim ◽

Sol Yun ◽

Ho Seok Park ◽

Joong Tark Han ◽

Kwang-Bum Kim ◽

...

Keyword(s):

Ionic Liquid ◽

Activated Carbon ◽

Surface Area ◽

Chemical Activation ◽

High Surface ◽

High Surface Area ◽

Graphitic Structure

Carbonization and chemical activation of an ionic liquid are demonstrated to produce an outstanding structural combination of an unexpectedly high surface area and a graphitic structure.

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Chromium Removal from Industrial Water Through Functionallized Nanoparticles

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2008.247 ◽

2008 ◽

Vol 8 (11) ◽

pp. 5733-5738 ◽

Cited By ~ 8

Author(s):

Xicoténcatl López ◽

Victor M. Castaño

Keyword(s):

Activated Carbon ◽

Surface Area ◽

Surface Functionalization ◽

High Surface ◽

High Surface Area ◽

Chromium Removal ◽

Industrial Water ◽

Hazardous Metal ◽

High Surface Area Materials

Cr ion-polluted industrial water was treated with commercial activated carbon and with either mercaptane- and amine-functionallized silica nanoparticles, revealing that the use of relatively low surface area materials can advantageously compete with high surface area materials, traditionally utilized for removing hazardous metal ions, provided a proper surface functionalization of the nanoparticles is in place. FTIR and SEM characterization of the different materials and stages of the experiments are provided, as well.

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