Assessment of Adsorption Parameter Effectiveness for Radio-Selenium and Radio-Iodine Adsorption on Activated Carbon

2015 ◽  
pp. 97-108
Author(s):  
A. Beril Tugrul ◽  
Nilgun Karatepe ◽  
Sevilay Haciyakupoglu ◽  
Sema Erenturk ◽  
Nesrin Altinsoy ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Adsorption Parameter ◽  
Iodine Adsorption

The Preparation of the Second Modification of Activated Carbon Fiber Loaded Mn

2011 ◽  
Vol 109 ◽  
pp. 261-265
Author(s):  
Lu Lu ◽  
Jing Zhang ◽  
Ying Chun Yan
Keyword(s):  
Activated Carbon ◽  
Adsorption Properties ◽  
Activated Carbon Fiber ◽  
Impregnation Method ◽  
Optimal Conditions ◽  
Activation Time ◽  
Time Condition ◽  
Orthogonal Experiments ◽  
Iodine Adsorption ◽  
N2 Activation

The Mn loaded ACF (ACF-Mn), prepared by impregnation method combined with activation method under high temperature, can be second modified. The best second modifiers, modifier concentration and activation time condition for ACF-Mn was determine by orthogonal experiments. The modified ACF was characterized by XRD、SEM、EDS and other ways. The results show that the optimal conditions for the second modification was that at 700°C under the protection of N2 activation for 50 min when the modifier concentration of CuSO4 was 10%. The iodine adsorption value of the second modified ACF is 1605.36 mgg-1, and the content of basic functional groups is 119.86 mmolg-1. The granular Cu, Mn attached to the surface of ACF and significantly increased its crystallinity. This is helpful to increase the surface area and enhance its adsorption properties.

The Regeneration of the Spent Catalyst Resulted from 3,4,5,6-Tetrachloropyridine-2-Carbonitrile Synthesis

2012 ◽  
Vol 550-553 ◽  
pp. 2436-2446 ◽  
Author(s):  
Yang Li ◽  
Qiu Hong Ai ◽  
Hao Xin Wang ◽  
He’an Luo
Keyword(s):  
Activated Carbon ◽  
Thermal Desorption ◽  
Flow Rate ◽  
Social Benefit ◽  
Process Conditions ◽  
Spent Catalyst ◽  
Economical Benefit ◽  
Iodine Adsorption ◽  
Optimized Conditions ◽  
Temperature Time

In order to optimize the process conditions for regeneration of activated carbon form spent catalyst resulted from 3,4,5,6-tetrachloropyridine-2-carbonitrile synthesis. A two-step process involving the thermal desorption of spent activated carbon and the activation of activated carbon treated by thermal desorption with steam was designed. The influence of desorption temperature, time and the flow rate of nitrogen on the yield of chlorides, the iodine adsorption capacity and the yield of activated carbon were investigated, respectively . The optimal desorption conditions were: temperature of 650°C, time of 90min and the flow rate of nitrogen of 30ml/min. The yield of the chlorides obtained under the optimal conditions was 14.85%. The regeneration of activated carbon treated by thermal desorption with steam; the optimized conditions analyzed by RSM were regeneration temperature of 696°C, time of 84 min and flow rate of steam of 0.58g/min. The experimental results on the optimized conditions were iodine adsorption value of 1003.59mg / g, These methods can not only recover chloride in the spent activated carbon, but also the regeneration activated carbon could partially replace the fresh activated carbon, which would bring an obvious economical benefit and social benefit.

scholarly journals RAPID METHOD FOR DETERMINATION OF NANO SURFACE AREA OF ARECANUT SHELL DERIVED ACTIVATED CARBON BY IODINE ADSORPTION NUMBER

2018 ◽  
Vol 6 (432) ◽  
pp. 53-56
Author(s):  
A.S. Jadhava ◽  
◽  
G.T. Mohanraj ◽  
S. Mayadevi ◽  
A.N. Gokarn ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Rapid Method ◽  
Iodine Adsorption

Pemanfaatan Limbah Padat Palm Kernel Cake (PKC) sebagai Sumber Karbon Aktif dengan Proses Kimia

2016 ◽  
Vol 10 (1) ◽  
pp. 24-35
Author(s):  
Haspiadi Haspiadi
Keyword(s):  
Activated Carbon ◽  
Solid Waste ◽  
Adsorption Capacity ◽  
Chemical Activation ◽  
Palm Kernel ◽  
Palm Kernel Cake ◽  
Palm Kernel Oil ◽  
Kernel Oil ◽  
Iodine Adsorption

Solid waste of Palm kernel cake (PKC) is a by product of oil extraction from palm nut pose a serious environmental problem in some factories of Palm Kernel Oil (PKO. Thererfore the research about utilization of palm kernel cake solid waste (PKC) as a source of activated carbon was performed. From this research is to know quality of activated carbon using palm kernel cake as a row material to compare with the SNI 06-3730-1995. The process was carried out is chemical activation method with in laboratory scale using two types activator, which is phosphoric acid and potassium hydroxide at six different concentration 2%, 4%, 6%, 8%, 10% and 12% respectively. Whereas, carbonization was held at temperature of 400oC during 120 minutes. The result indicated that the quality of activated carbon according to key parameters using  the lowest concentration of  activator fulfilling with SNI 06-3730-1995 was produced by H3PO4 6%  with iodine adsorption capacity 769 mg/g. Meanwhile for activator KOH 10% according to key parameters using  the lowest concentration of  activator fulfilling with SNI 06-3730-1995 was produced by with condition of iodine adsorption capacity 778 mg/gABSTAKLimbah padat palm kernel cake (PKC) yang dihasilkan dari proses ekstraksi kernel merupakan permasalahan lingkungan yang serius dibeberapa industri yang mengolah Palm Kernel Oil (PKO). Oleh karena itu dilakukan penelitian untuk memanfaatkan limbah padat Palm Kernel Cake (PKC) sebagai sumber karbon aktif. Diharapkan dari penelitian ini dapat diketahui mutu karbon aktif yang dihasilkan dibandingkan dengan SNI 06 3730-1995. Proses pengolahan yang dilakukan secara kimia dalam skala laboratorium, menggunakan dua jenis aktivator yaitu H3PO4 dan KOH dengan konsentrasi 2%, 4%, 6%, 8%, 10% dan 12%. Karbonisasi dilakukan pada suhu 400 oC selama 120 menit. Hasil uji mutu karbon aktif yang dihasilkan berdasarkan parameter kunci dengan pertimbangan penggunaan bahan kimia dengan konsentrasi aktivator terkecil menunjukkan bahwa pengggunaan aktivator 6% H3PO4  memiliki daya serap terhadap iod sebesar (I2) 769 mg/g, bila dibandingkan dengan SNI 06 3730-1995 telah dapat memenuhi syarat mutu. Sedangkan penggunaan aktivator KOH 10%  dengan pertimbangan penggunaan bahan kimia dengan konsentrasi aktivator terkecil memiliki daya serap terhadap iod sebesar 778 mg/g. Kata kunci :  asam fosfat, kalium hidroksida, karbon aktif, limbah padat, daya serap iod, palm kernel cake

Technology Optimization Study on Preparation of Activated Carbon from Rice Husk Cracking

2011 ◽  
Vol 197-198 ◽  
pp. 931-934
Author(s):  
Feng Gao ◽  
Ying Xin Ge ◽  
Jia Zhao ◽  
Hai Xia Yang
Keyword(s):  
Activated Carbon ◽  
Rice Husk ◽  
Active Agent ◽  
Quadratic Equation ◽  
Activation Time ◽  
Activation Temperature ◽  
Optimization Study ◽  
Activation Ratio ◽  
Iodine Adsorption ◽  
Temperature Activation

Response surface methodology (RSM) was adopted to study the key parameters such as activation temperature, activation time, and active agent amount in order to increase activated carbon iodine adsorption value from rice husk. A second order quadratic equation was established and the applicability of model and interaction involved factors on predicting the iodine adsorption value was verified. The results indicated that the effect on the iodine adsorption value was as follows: activation temperature, activation ratio, activation time. The optimal levels for achieving the highest iodine adsorption value were obtained, including activation temperature of 550°C, activation time of 48min and activation ratio of 1.25. The iodine adsorption value reached 1464.793mg/g under optimized conditions. Iodine adsorption value was conducted under the optimum condition and the results showed the average relative error 0.58%, it proved that the models fitted well, the experimental data and the model were feasible.

scholarly journals The Physicochemical Characteristic of Activated Carbon Based on Sludge and Preparation Method

2021 ◽  
Vol 20 (3) ◽  
Author(s):  
H. Lu ◽  
F. Luo ◽  
Q. Zhang ◽  
J. Li ◽  
L. Cai
Keyword(s):  
Activated Carbon ◽  
Pore Structure ◽  
Adsorption Capacity ◽  
Reaction Temperature ◽  
Preparation Method ◽  
Physicochemical Characteristic ◽  
Preparation Condition ◽  
Yield Rate ◽  
Iodine Adsorption ◽  
Component Adsorption

To understand the features and best preparation of sludge activated carbon (SAC), and the pore structure, component, adsorption characteristics, and the yield rate of SAC, many tests have been carried out. The study illustrated that the pore structure was mostly mesopore and amorphous pore such as the ink bottle hole. In terms of different preparations to obtain SAC, the yield of SAC in sample No.1 achieved 88.09%. Using the preparation of ZnCl2 as an activator, the iodine adsorption value was significantly higher than other preparations. However, the content of quartz in sample No.1 achieved a maximum of 52.51%. Charcoal was detected in all samples except sample nos 9-12. The adsorption capacity of Cu(II) and Cd(II) reached a maximum of 600.02 mg.kg-1 and 383.2 mg.kg-1. The results showed an optimum preparation condition, which was by using the ZnCl2 as an activator, 2:1 as the impregnated ratio, 40% concentration in activator and at 400ºC reaction temperature could create rich pore structure and charcoal inside.

scholarly journals PENINGKATAN KUALITAS MINYAK GORENG BEKAS DENGAN MENGGUNAKAN ADSORBEN ARANG AKTIF DARI AMPAS TEBU YANG DIAKTIVASI DENGAN NaCL

1930 ◽  
Vol 6 (02) ◽  
pp. 139-148
Author(s):  
Zona Octarya ◽  
Adhitya Fernando
Keyword(s):  
Fatty Acids ◽  
Activated Carbon ◽  
Free Fatty Acids ◽  
Activated Charcoal ◽  
Quality Standard ◽  
Test Quality ◽  
Cooking Oil ◽  
Used Cooking Oil ◽  
Iodine Adsorption

This study uses activated carbon from bagasse as adsorbent by 75 mg in 200 grams of used cooking oil. Used oil is cooking oil that has been worn for 10 hours and comes from the restaurant industry. Activated carbon is made from leftover bagasse disposal is carbonized at a temperature of 600 oC for 2 hours and was activated by NaCl and 30 % test quality with iodine adsorption test. The test results of iodine adsorption test on activated carbon bagasse is 795,56 mg g and has met the SNI standard. The results showed that the peroxide used cooking oil, oil despicing results, the results of neutralization and bleaching results using bagasse activated charcoal in a row is 10,12 meq/kg, 8,62 meq/kg, 6,04 meq/kg, and 3,93 meq/kg. While the results of the determination of free fatty acids (FFA) on used cooking oil, despicing results, the results of neutralization and bleaching results using bagasse activated charcoal in a row is 2,4 %, 2,016 %, 0,88 % and 0,49 %. The results of the determination of peroxide and free fatty acids (FFA) has not met the quality standard of cooking oil (SNI), but is able to improve the quality of cooking oil.

Synthesis and Characterization of Double Pore Size Multiphase Materials from Waste Aluminum Slag and Activated Carbon

2012 ◽  
Vol 512-515 ◽  
pp. 626-630
Author(s):  
Yan Qing Chen ◽  
Ren Ping Wu
Keyword(s):  
Activated Carbon ◽  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Benzene Adsorption ◽  
Activated Alumina ◽  
Multiphase Materials ◽  
New Material ◽  
Iodine Adsorption ◽  
Adsorption Capability

A new type of double pore size activated alumina/activated carbon multiphase material was made by using waste aluminum slag and activated carbon as main raw materials. The microstructures and pore size distribution of the new material were characterized by SEM and BET techniques. Iodine adsorption value was used to evaluate the adsorption performance of the multiphase materials, and the benzene adsorption capability was also measured. The results show that the specific surface area of the activated alumina/activated carbon multiphase materials is 261.95m2/g, pore volume can reach 0.25m3/g, and the iodine adsorption value is 381.97mg/g. BET pore size distribution shows that micropores and mesopores both exist in the composite material. The micropores range from 0.6 to 1.4nm, and the mesopores range from 3.0 to 7.0nm. The benzene adsorption capability of this new material is excellent, with a saturated adsorption capacity of 241.00 mg/g, much better than pure activated alumina or activated carbon.

Optimized Preparation of High Value-Added Activated Carbon and Its Adsorption Properties for Methylene Blue

2019 ◽  
Vol 17 (8) ◽  
Author(s):  
Xiao Yu ◽  
Zhijing Han ◽  
Shuqi Fang ◽  
Chun Chang ◽  
Xiuli Han
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Value Added ◽  
Isotherm Models ◽  
Activation Temperature ◽  
Preparation Conditions ◽  
Equilibrium Data ◽  
Endothermic Process ◽  
Ft Ir ◽  
Iodine Adsorption

AbstractThe optimal preparation conditions of activated carbon (AC) derived from corncob (CC) by steam activation were investigated using response surface methodology. In response to iodine adsorption capacity, experimental design was established using three synthetic variables based on the Box–Behnken central composite design. The optimum conditions of 892 °C activation temperature, 40 min residence time, and 1:1.6 the mass ratio of char to H2O gave 1216.74 mg/g iodine adsorption value. AC was characterized using instrumental analyses consist of Brunauere-Emmette-Teller (BET), Fourier transform infrared (FT-IR) and Scanning electron microscopy (SEM). The effect of experimental parameters such as adsorption time, adsorbent dosage and pH on the uptake of methylene blue (MB) were studied. Experimental equilibrium data was analyzed by the Langmuir, Freundlich, Sips and Koble–Corrigan isotherm models. The results showed that the Freundlich and Koble–Corrigan models could properly represent the adsorption behavior of MB on AC. In addition, it was known that the adsorption of MB was a spontaneous and endothermic process from the thermodynamic parameters of ΔG, ΔHand ΔS.

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