Experimental Study on Production of Activated Carbons from Furfural Residues

2014 ◽  
Vol 878 ◽  
pp. 271-277 ◽  
Author(s):  
Yu Lei Yin ◽  
Ai Min Li ◽  
Zhi Kun Zhang
Keyword(s):  
Methylene Blue ◽  
Activated Carbons ◽  
Orthogonal Experiment ◽  
Total Yield ◽  
Carbonization Temperature ◽  
Optimum Conditions ◽  
Activation Time ◽  
Activation Temperature ◽  
Surface Areas ◽  
Furfural Residues

The activated carbons (ACs) were prepared by furfural residues with the activation of water vapor. The optimum condition of preparation was investigated by orthogonal experiment. The influences of carbonization temperature and time, activation temperature and time, quantity of steam on the adsorption behavior of the ACs were investigated. The experimental response varied between: 24.7-38.7% for the total yield, 29-162mg/g for the adsorption of methylene blue (AMB), 495.2-904.7 mg/g for the adsorption of iodine (AI), 113.9-524m2/g for the surface areas calculates by Brunauer-Emmett-Teller (SBET). The optimal activated carbon is obtained when using 600°C as carbonization temperature, 900°C as activation temperature and 25min as carbonization and activation time. The results indicated that under optimum conditions the methylene blue of AC was 163mg/g, the iodine of AC was 904.7mg/g, the surface areas (SBET) of AC was 524m2/g, and the Yield of AC was 30.6%.

Preparation of Activated Carbon from Waste Particle Board by K2CO3 Activation Treatment

2010 ◽  
Vol 44-47 ◽  
pp. 2562-2568
Author(s):  
Wu Yu ◽  
Ming Yu Zhi ◽  
Xiao Juan Jin
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Iodine Number ◽  
Activated Carbons ◽  
Bet Surface Area ◽  
Particle Board ◽  
Optimum Conditions ◽  
Activation Time ◽  
Activation Temperature ◽  
Methylene Blue Adsorption

Activated carbons were prepared from waste particle board (WPB) by K2CO3 activation. The effects of different parameters, such as chemical/WPB ratio, activation time and activation temperature on yield, the methylene blue adsorption, Iodine number of activated carbon were investigated. The optimum conditions were determined by the method of factor analysis and the orthogonal design as follows: activation temperature 900°C, K2CO3 (50% concentration)/ WPB 4.0, activation time 60 min. Amount of methylene blue adsorption, Iodine number, phenol adsorption, BET surface area and the yield of activated carbon prepared under optimum conditions were 82.5mg/g, 1234mg/g, 185mg/g, 1026m2/g and 30.4%, respectively.

Preparation of Activated Carbon from Waste Particle Board by Chemical Activation Using Potassium Hydroxide

2010 ◽  
Vol 129-131 ◽  
pp. 1151-1155 ◽  
Author(s):  
Xiao Juan Jin ◽  
Zhi Ming Yu ◽  
Zhe Ren ◽  
Xin Liu
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Potassium Hydroxide ◽  
Chemical Activation ◽  
Particle Board ◽  
Optimum Conditions ◽  
Activation Time ◽  
Activation Temperature ◽  
Methylene Blue Adsorption ◽  
Positive Effects

Activated carbons were prepared through chemical activation of waste particle board (WPB) precursor using potassium hydroxide as the chemical agent. The effects of different parameters, such as chemical/WPB ratio, activation time and activation temperature on yield and the methylene blue adsorption capacity of activated carbon were investigated. Experimental results indicated that the optimum conditions were as follow: activation temperature 850°C, KOH(50% concentration)/ WPB 4.0, activation time 50 min. Amount of methylene blue adsorption, Iodine number and the yield of activated carbon prepared under optimum conditions were 15.0 mL/0.lg, 1213mg/g and 36.9%, respectively. Therefore, great potential exists for developing activated carbon products from waste wood, which will have the positive effects of reducing our landfill problem and gain attractive products.

Preparation of Coal-Based Activated Carbon and its Application for Methylene Blue Removal

2012 ◽  
Vol 253-255 ◽  
pp. 988-992
Author(s):  
Guo Zhuo Gong ◽  
Qiang Xie ◽  
Wen Fen Yang ◽  
Xin Yao
Keyword(s):  
Methylene Blue ◽  
Orthogonal Experiment ◽  
Preparation Condition ◽  
Raw Material ◽  
Activation Temperature ◽  
Surface Areas ◽  
Preparation Conditions ◽  
Adsorption Capacities ◽  
Acid Washing ◽  
Mb Adsorption

In accordance with an orthogonal experiment design, a series of ACs for methylene blue (MB) removal had been prepared in the presence of small amounts of KOH in raw material combined with delicate acid washing after carbonization and before steam activation. ACs were characterized, and their adsorption capacities for MB were determined as well. It was found that it was feasible to regulate and optimize pore structure in coal-based ACs by tuning preparation conditions concisely and properly, and the MB adsorption capacities were linearly correlated with their specific surface areas. Based on statistic analysis, it was revealed that among the four process variables studied for the sorbent prepared in this work, the activation temperature was found to be the most significant one for the MB adsorption capacity, the next ones were the activation time, the flow rate of water vapor and the amount of KOH, and an optimized preparation condition was figured out.

scholarly journals The utilization of sorbents obtained from miscanthus using steam as the activation agent for wastewaters treatment

2007 ◽  
Vol 9 (2) ◽  
pp. 102-105 ◽  
Author(s):  
Krystyna Bratek ◽  
Wiesław Bratek ◽  
Marek Kułażyński
Keyword(s):  
Methylene Blue ◽  
Sorption Capacity ◽  
Congo Red ◽  
Rotary Furnace ◽  
Activation Process ◽  
Optimum Conditions ◽  
Activation Time ◽  
Activation Temperature ◽  
Activation Products ◽  
Wastewaters Treatment

The utilization of sorbents obtained from miscanthus using steam as the activation agent for wastewaters treatment The possibility of obtaining sorbents with a good sorption capacity from miscanthus has been investigated. The chars and the activation products were obtained from the miscanthus in a rotary furnace. The activation process of miscanthus was carried out by water vapour at 700-800°C and at the activation time of 30-90 min. We found that the optimum conditions for the activation process were: the activation temperature of 750°C (activation time of 60 and 90 min) and 800°C (activation time of 45 or 60 min). For these conditions the sorbents with the best sorption capacity for p-chlorophenol, toluene, methylene blue and Congo red were obtained.

Preparation and Characterization of Activated Carbon Fibers from Jute Fibers by Phosphoric Acid Activation

2012 ◽  
Vol 184-185 ◽  
pp. 1110-1113 ◽  
Author(s):  
Li Fen He ◽  
Qi Xia Liu ◽  
Tao Ji ◽  
Qiang Gao
Keyword(s):  
Activated Carbon ◽  
Carbon Fiber ◽  
Phosphoric Acid ◽  
Carbon Fibers ◽  
Activated Carbon Fibers ◽  
Optimum Conditions ◽  
Activation Time ◽  
Activation Temperature ◽  
Jute Fibers ◽  
Activating Agent

Various jute-based activated carbon fibers were prepared by using jute fibers as raw materials and phosphoric acid as activating agent. The effects of three main factors such as concentration of activating agent, activation temperature and activation time on the yield and adsorptive properties of active carbon fibers were investigated via orthogonal experiments. The surface physical morphology of jute-based activated carbon fiber was also observed by using Scanning Electron Microscope. Results showed that the optimum conditions were phosphoric acid concentration of 4 mol/L, activation temperature of 600 °C and activation time of 1h. The yield, iodine number and amount of methylene blue adsorption of the active carbon fiber prepared under optimum conditions were 37.99 %, 1208.87 mg/g and 374.65 mg/g, respectively.

scholarly journals Optimization of Activated Carbons Prepared byH3PO4and Steam Activation of Oil Palm Shells

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Daouda Kouotou ◽  
Horace Ngomo Manga ◽  
Abdelaziz Baçaoui ◽  
Abdelrani Yaacoubi ◽  
Joseph Ketcha Mbadcam
Keyword(s):  
Activated Carbon ◽  
Oil Palm ◽  
Activated Carbons ◽  
Optimum Conditions ◽  
Steam Activation ◽  
Experimental Conditions ◽  
Activation Temperature ◽  
Impregnation Ratio ◽  
Preparation Conditions ◽  
Two Factors

In this study, activated carbons were prepared from oil palm shells by physicochemical activation. The methodology of experimental design was used to optimize the preparation conditions. The influences of the impregnation ratio (0.6–3.4) and the activation temperature between 601°C and 799°C on the following three responses: activated carbon yield (R/AC-H3PO4), the iodine adsorption (I2/AC-H3PO4), and the methylene blue adsorption (MB/AC-H3PO4) results were investigated using analysis of variance (ANOVA) to identify the significant parameters. Under the experimental conditions investigated, the activation temperature of 770°C and impregnation ratio of 2/1 leading to the R/AC-H3PO4of 52.10%, theI2/AC-H3PO4of 697.86 mg/g, and the MB/AC-H3PO4of 346.25 mg/g were found to be optimum conditions for producing activated carbon with well compromise of desirability. The two factors had both synergetic and antagonistic effects on the three responses studied. The micrographs of activated carbons examined with scanning electron microscopy revealed that the activated carbons were found to be mainly microporous and mesoporous.

Absorption Performance of Activated Carbon with Orange Peel through Phosphoric Acid Activation Method

2012 ◽  
Vol 518-523 ◽  
pp. 2298-2302
Author(s):  
Yue Zhou ◽  
Wei Guo Pan ◽  
Rui Tang Guo ◽  
Xiao Bo Zhang ◽  
Xue Ping Wen ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Phosphoric Acid ◽  
Raw Materials ◽  
Orange Peel ◽  
Carbonization Temperature ◽  
Operating Conditions ◽  
Acid Activation ◽  
Activation Time ◽  
Methylene Blue Adsorption

In order to reduce power plant nitric oxide emission with gaining economical adsorbent, activated carbon was prepared from the raw materials of orange peel under different operating conditions in this paper. The methylene blue adsorption value of different activated carbon has also been tested, and the effects on the methylene blue adsorption performance of different dipping concentration, activation time and carbonization temperature were studied. The finding is that the dipping concentration has the most important impact on methylene blue adsorption value. The highest methylene blue adsorption value of orange peel activated carbon has shown as 277.746mg/g under the following conditions: phosphoric acid concentration was 40%, activation time was 12 hours and carbonization temperature was 500°C. It is a economically feasible absorbent material through a great deal of experiments and analysis.

Preparation of Activated Carbon with Higher Absorbability from Anthracite

2012 ◽  
Vol 430-432 ◽  
pp. 127-131
Author(s):  
Qiao Wen Yang ◽  
Hui Zhao ◽  
Jian Chang ◽  
Kun Wang ◽  
Luo Tao
Keyword(s):  
Activated Carbon ◽  
Iodine Value ◽  
Orthogonal Experiment ◽  
Ash Content ◽  
Carbonization Temperature ◽  
Activation Time ◽  
Experimental Conditions ◽  
Acid Pickling ◽  
Weight Proportion

This paper studied experimental conditions of making higher absorption activated carbon from Jincheng anthracite. The result was obtained by using the orthogonal experiment in which four factors were designated: the carbonization temperature, the carbonization time, the activation time as well as the additive types, with the target of iodine value. The optimized parameters had been found out: the carbonization temperature is 600 °C，the carbonization time is 1.5 h, the activation time is 4 h and the additive is NaNO3 which is better in a weight proportion of 8 %. At last, under the optimized parameters, the better activated carbon products could be gained by acid pickling, which has a higher iodine value 1094.8 mg/g and low ash content 8.73 %.

Preparation of Coal-Based Columnar Activated Carbon for Removal of Benzene

2016 ◽  
Vol 878 ◽  
pp. 101-107
Author(s):  
Guo Zhuo Gong ◽  
Ji Liu ◽  
Wen Fen Yang ◽  
Yun Yun Zhou ◽  
Hai Tao Sheng ◽  
...  
Keyword(s):  
Activated Carbons ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Benzene Adsorption ◽  
Process Variables ◽  
Activation Time ◽  
Activation Temperature ◽  
Adsorption Capacities ◽  
Experiment Method ◽  
Preparation Variable

In the paper, a series of coal-based columnar activated carbons (CCACs) for adsorption of benzene were prepared using a factorial experiment method. The CCACs prepared were characterized, and their adsorption capacities toward benzene were measured in a differential fixed-bed reactor. Besides, through a statistical method, the importance degree of preparation variables was studied, and the effects of preparation variables on benzene adsorption capacities of the CCACs were fully evaluated. It was found that pore structure of CCACs prepared was beneficial for benzene adsorption, but preparation variable in the process has little effect on the surface chemistry of CCACs prepared. Based on statistic analysis, it was revealed that among the four process variables studied for the sorbent prepared in this work, the activation temperature was found to be the most significant one for benzene adsorption capacity, next ones are the activation time and the amount of KOH, and the last one is the flow rate of water vapor and their optimal levels were 950 °C, 3.0 h, 2.5 % and 1.25 mL/g/h respectively.

Acid Light Yellow Removal from Wastewater Using Peanut Shell-Based Activated Carbon

2013 ◽  
Vol 864-867 ◽  
pp. 1694-1698 ◽  
Author(s):  
Lin Zhi Zhai ◽  
Gang Li
Keyword(s):  
Wastewater Treatment ◽  
Activated Carbon ◽  
Dye Removal ◽  
Ph Value ◽  
Peanut Shell ◽  
Dye Wastewater ◽  
Optimum Conditions ◽  
Activation Time ◽  
Activation Temperature ◽  
Light Yellow

Peanut shell-based activated carbon was prepared by 60% zinc chloride activation. The activation temperature was 923K and activation time was 90min. The activated carbon was applied on the removal of acid light yellow from wastewater. The effects of the amount of adsorbent, the initial dye concentration and pH value of solution were investigated. The results showed that the optimum conditions for dye removal: activated carbon dosage of 2.5g/L, initial dye concentration of 50mg/L, pH value of 3. The color removal efficiency attained above 95%. It is concluded that activated carbon developed from peanut shell could be effective and practical for utilizing in dye wastewater treatment.

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