Study on Optimal Condition of Activated Carbon Prepared by Microwave Heating from Shot Coke

2014 ◽  
Vol 936 ◽  
pp. 1809-1815
Author(s):  
Ying Fei Hou ◽  
Ya Ya Gu ◽  
Qing Ping Mou ◽  
Gang Yao ◽  
Jian Hui Zhang
Keyword(s):  
Activated Carbon ◽  
Optimal Condition ◽  
Microwave Heating ◽  
Surface Area ◽  
Microwave Radiation ◽  
Microwave Power ◽  
Bet Surface Area ◽  
Benzene Adsorption ◽  
Iodine Adsorption ◽  
Radiation Time

The activated carbon was prepared from the Jing Bo shot coke using KOH as the activation agent by microwave heating. The effect of microwave radiation time, the microwave power and the ratio of activation to shot coke on the properties of the activated carbon were investigated in detail. The result showed that the optimized condition of preparation of activated carbon is as followed: the ratio of activation agent to shot coke is 3:1, the microwave power 900 W and the microwave radiation time is 40 min. In this condition, the BET surface area of the activated carbon is 2668 m2/g; the iodine adsorption value 2281 mg/g and the benzene adsorption value 1368 mg/g.

scholarly journals Effect of Microwave Heating Conditions on the Preparation of High Surface Area Activated Carbon from Waste Bamboo

2015 ◽  
Vol 34 (7) ◽  
pp. 667-674
Author(s):  
Jian Wu ◽  
Hongying Xia ◽  
Libo Zhang ◽  
Yi Xia ◽  
Jinhui Peng ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Microwave Heating ◽  
Surface Area ◽  
Microwave Power ◽  
High Surface ◽  
High Surface Area ◽  
Significant Proportion ◽  
Heating Time ◽  
Raw Material ◽  
Carbon Surface

Abstract The present study reports the effect of microwave power and microwave heating time on activated carbon adsorption ability. The waste bamboo was used to preparing high surface area activated carbon via microwave heating. The bamboo was carbonized for 2 h at 600°C to be used as the raw material. According to the results, microwave power and microwave heating time had a significant impact on the activating effect. The optimal KOH/C ratio of 4 was identified when microwave power and microwave heating time were 700 W and 15 min, respectively. Under the optimal conditions, surface area was estimated to be 3441 m2/g with pore volume of 2.093 ml/g and the significant proportion of activated carbon was microporous (62.3%). The results of Fourier transform infrared spectroscopy (FTIR) were illustrated that activated carbon surface had abundant functional groups. Additionally the pore structure is characterized using Scanning Electron Microscope (SEM).

scholarly journals Factor Affecting Microwave Assisted Preparation of Activated Carbon from Local Raw Materials

2015 ◽  
Vol 47 ◽  
pp. 15-23 ◽  
Author(s):  
Mohamed A. Elsayed ◽  
O.A. Zalat
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Microwave Power ◽  
Bet Surface Area ◽  
Maximum Adsorption Capacity ◽  
Optimum Conditions ◽  
Corn Cob ◽  
Carbon Yield ◽  
Microwave Assisted ◽  
Impregnation Ratio

This study illustrates the preparation of activated carbon (AC) from Corn Cob (CC) via microwave assisted K2CO3 activation. The effect of operational parameters including chemical impregnation ratio (0.25-1.25), microwave power (90 – 800 W) and irradiation time (1 – 9 min) on the carbon yield and adsorption capability of derived Corn Cob Activated Carbon (CCAC) were investigated. The results indicated that the optimum conditions were as follows: microwave power of 600W, microwave radiation time of 5 min and the impregnation ratio of K2CO3 was 0.75 g/g. The optimum conditions resulted in CCAC with a maximum adsorption capacity of 275.32 mg/g for MB and carbon yield of 27.09%. The BET surface area, Langmuir surface area and total pore volume were determined to be 765 m2/g, 834 m2/g and 0.43 cm3/g, respectively.

Preparation of High Surface Area Activated Carbon from Spent Phenolic Resin by Microwave Heating and KOH Activation

2018 ◽  
Vol 37 (1) ◽  
pp. 59-68 ◽  
Author(s):  
Song Cheng ◽  
Libo Zhang ◽  
Shengzhou Zhang ◽  
Hongying Xia ◽  
Jinhui Peng
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Microwave Power ◽  
Phenolic Resin ◽  
High Surface ◽  
High Surface Area ◽  
Raw Material ◽  
Bet Surface Area ◽  
Koh Activation ◽  
Microwave Assisted

AbstractThe spent phenolic resin is as raw material for preparing high surface area activated carbon (HSAAC) by microwave-assisted KOH activation. The effects of microwave power, activation duration and impregnation ratio (IR) on the iodine adsorption capability and yield of HSAAC were investigated. The surface characteristics of HSAAC were characterized by nitrogen adsorption isotherms, FTIR, SEM and TEM. The operating variables were optimized utilizing the response surface methodology (RSM) and were identified to be microwave power of 700 W, activation duration of 15 min and IR of 4, corresponding to a yield of 51.25 % and an iodine number of 2,384 mg/g. The pore structure parameters of the HSAAC, i. e., Brunauer–Emmett–Teller (BET) surface area, total pore volume, and average pore diameter were estimated to be 4,269 m2/g, 2.396 ml/g and 2.25 nm, respectively, under optimum conditions. The findings strongly support the feasibility of microwave-assisted KOH activation for preparation of HSAAC from spent phenolic resin.

ADVANCEMENT IN THE PRODUCTION OF ACTIVATED CARBON FROM BIOMASS USING MICROWAVE HEATING

2017 ◽  
Vol 79 (3) ◽  
Author(s):  
Adekunle Moshood Abioye ◽  
Farid Nasir Ani
Keyword(s):  
Activated Carbon ◽  
Adsorption Capacity ◽  
Microwave Heating ◽  
Process Parameters ◽  
Flow Rate ◽  
Microwave Power ◽  
Physical Activation ◽  
Activation Process ◽  
Agent Flow ◽  
Radiation Time

An overview of recent advancement in the production of activated carbon (AC) from biomass using microwave heating is presented. The use of microwave heating method for the thermal conversion of biomass to useful products has been on the increase in the last decade because it offers fast and uniform heating, and a higher level of automation. The effects of process parameters (microwave power and radiation time, agent flow rate in physical activation and impregnation ratio in chemical activation) on the properties and adsorption capacity of the AC are reviewed. From the results reported in the literature, it can be seen that the influence of the preparation parameters on the adsorption capacity of the prepared AC followed the same pattern. In the physical activation process, microwave power and radiation time have more pronounce effects on the properties of the AC than the activation agent flow rate. Furthermore, the properties of the AC were found to be at their best when the process parameters are at the optimum values wether individually or collectively, and further increase in the process value beyond optimum value resulted in decrease in their adsorption capacity.

Carbon Dioxide Sequestration Using Activated Carbon From Agro Waste-Waste Bamboo

2021 ◽  
Author(s):  
Emmanuel Ayodele ◽  
Victoria Ezeagwula ◽  
Precious Igbokwubiri
Keyword(s):  
Activated Carbon ◽  
Fly Ash ◽  
Greenhouse Gases ◽  
Surface Area ◽  
Carbon Capture ◽  
Agricultural Waste ◽  
High Surface ◽  
Research Work ◽  
High Surface Area ◽  
Bet Surface Area

Abstract Bamboo trees are one of the fastest growing trees in tropical rainforests around the world, they have various uses ranging from construction to fly ash generation used in oil and gas cementing, to development of activated carbon which is one of the latest uses of bamboo trees. This paper focuses on development of activated carbon from bamboo trees for carbon capture and sequestration. The need for improved air quality becomes imperative as the SDG Goal 12 and SDG Goal13 implies. One of the major greenhouse gases is CO2 which accounts for over 80% of greenhouse gases in the environment. Eliminating the greenhouse gases without adding another pollutant to the environment is highly sought after in the 21st century. Bamboo trees are mostly seen as agricultural waste with the advent of scaffolding and other support systems being in the construction industry. Instead of burning bamboo trees or using them for cooking in the local communities which in turn generates CO2 and fly ash, an alternative was considered in this research work, which is the usage of bamboo trees to generate activated, moderately porous and high surface area carbon for extracting CO2 from various CO2 discharge sources atmosphere and for water purification. This paper focuses on the quality testing of activated carbon that can effectively absorb CO2. The porosity, pore volume, bulk volume, and BET surface area were measured. The porosity of the activated carbon is 27%, BET surface area as 1260m²/g. Fixed carbon was 11.7%, Volatility 73%, ash content 1.7%.

Studies on the Sorption of Benzene over DX 09 Carbon

2014 ◽  
Vol 525 ◽  
pp. 146-149
Author(s):  
Xin Ming Wang ◽  
Hai Rong Tang ◽  
Xue Zhi Zhou ◽  
Ning Wang ◽  
Feng Hua Yang
Keyword(s):  
Surface Area ◽  
Bet Surface Area ◽  
Benzene Adsorption ◽  
Static Vacuum

BET (Brunauer Emmett and Teller) surface area and pores distribution for the samples DX 09 Carbon were measured for of DX 09 carbon by N2 adsorption (195 °C) with Autosorb-1C (American Quantachrome Company).The adsorption of benzene over DX 09 Carbon was measured in the static vacuum adsorption equipment, which was self-constructed in laboratory. It was experimentally found that the BET surface area is about 1008 m2/g, and the structure coefficients for DX-09 carbon were W=0.365 and B=1.32*10-6 measured by benzene adsorption and calculated by D-R equation.

scholarly journals Conversion of automotive paint sludge to activated carbon via microwave pyrolysis technique for supercapacitor application

2020 ◽  
Vol 3 (1) ◽  
pp. 35
Author(s):  
Siti Shawalliah Idris ◽  
Muhammad Nasrul Bojy ◽  
Zakiuddin Januri
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Power Supply ◽  
Pore Volume ◽  
Potassium Hydroxide ◽  
Microwave Pyrolysis ◽  
Supercapacitor Application ◽  
Paint Sludge ◽  
The Impact ◽  
Radiation Time

Conversion of waste to wealth has been one of the ways to reduce the volume of industrial waste to disposal site, hence reducing the impact to the environment. In this work, paint sludge from an automotive industry (APS) was converted into activated carbon through chemical activation (potassium hydroxide (KOH)) using microwave pyrolysis technique. The effect of power and radiation time on the produced activated carbon were investigated and characterised (carbon content, surface area, and pore volume) to identify the possibility of application as a supercapacitor. Potassium hydroxide activation of the APS char via microwave pyrolysis has shown that power level and radiation time has influenced the yield of the APS activated carbon. A longer radiation time and higher power supply has produced activated carbon having higher carbon contents, lower impurities, higher surface area and higher pore volume. Thus, the APS activated carbon obtained via microwave pyrolysis at power supply 1000 W and 45 minutes radiation time had produced the highest surface area and total pore volume of 434.3 m2/g and 0.2901 cm3/g, respectively. However, the produced activated carbon is not suitable for the supercapacitor application as the minimum surface area requirement must be more than 1000 m2/g. The pore size of the activated APS char produced in this study was in the range of mesopores size which was also considered very poor for supercapacitor application. The outcome of this research has shown that the produced activated carbon could otherwise be used for other application than a supercapacitor.

Modulated synthesis and isoreticular expansion of Th-MOFs with record high pore volume and surface area for iodine adsorption

2020 ◽  
Vol 56 (49) ◽  
pp. 6715-6718 ◽  
Author(s):  
Zi-Jian Li ◽  
Yu Ju ◽  
Bowen Yu ◽  
Xiaoling Wu ◽  
Huangjie Lu ◽  
...  
Keyword(s):  
Single Crystals ◽  
Surface Area ◽  
Pore Volume ◽  
Bet Surface Area ◽  
Void Space ◽  
Adsorption Capacities ◽  
Iodine Adsorption

Isoreticular expansion of Th-MOFs via modulated synthesis yielded seven hierarchical complexes with superior quality single crystals, record high void space and BET surface area among Th materials, and exceptional iodine adsorption capacities.

Characterization of Activated Carbon from Sugar Cane Husk

2014 ◽  
Vol 699 ◽  
pp. 1006-1011
Author(s):  
Nurul’ Ain binti Jamion ◽  
Siti Mazleena binti Mohamed
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Sugar Cane ◽  
Single Point ◽  
Gravimetric Method ◽  
Bet Surface Area ◽  
Fourier Transformed Infrared Spectroscopy ◽  
Physico Chemical ◽  
Vacuum Method

Interface adsorption of gases and liquid on a clean solid surface could be due to the physical or chemical adsorption. In this study, the activated carbon was prepared from sugar cane husk (powder and granular form) using phosphoric acid (H3PO4) as activating agent. Sample was activated at 500°C for two hours in the furnace and washed using vacuum method. Besides, surface area of activated carbon was defined using Single Point Brunauer-Emmett-Teller (BET) Nitrogen Gas. The physico-chemical characteristics of the prepared activated carbon were characterized by Fourier-Transformed Infrared Spectroscopy (FTIR), gravimetric method, and Field Emission Scanning Electron Microscopy (FESEM). The adsorption study by surfactants, namely CTAB (cationic) and TX-100 (non-ionic) were investigated. The experimental results showed that a good activated carbon was prepared from sugar cane husk granular (SCH-G) gave the highest BET surface area of 860.18 m2/g and the adsorption capacity of SCH-G activated carbon at 25°C using TX-100 (205.81 mg g-1) was greater compared to the CTAB (108.20 mg g-1). This study has shown that the sugar cane husk was a good activated carbon and has potential to be used as adsorbent for the removal of surfactants from aqueous solutions.

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