Preparation of Copper Oxide Loaded Activated Carbon by Waste Sawdust for Acid Red GR Wastewater Treatment

2011 ◽  
Vol 356-360 ◽  
pp. 395-398 ◽  
Author(s):  
Bo Quan Jiang ◽  
Zheng Qiang Xiao
Keyword(s):  
Activated Carbon ◽  
Copper Oxide ◽  
Copper Nitrate ◽  
Cod Removal ◽  
Wood Dust ◽  
Optimum Process ◽  
Process Conditions ◽  
Removal Rates ◽  
Activation Temperature ◽  
Color And Cod Removal

The waste wood dust was utilized to prepare the copper oxide loaded activated carbon for the treatment of the printing and dyeing wastewater (acid red GR wastewater). The response surface assisted with Design-Expert 7.0 software was used to optimize the process. The secondary multiple regression models for the color and COD removal rates were established and proven to be significant. The optimum process conditions determined by the software were: copper nitrate (0.5mol/L) 15mL, ratio of liquid to solid 56, activation temperature 690 °C and activation time 2.1h, under which the color and COD removal rates reached 99.8% and 88.34%, respectively.

Treatment of Dyeing and Printing Wastewater by Copper Oxide Loaded on Coconut Shell Activated Carbon

2011 ◽  
Vol 366 ◽  
pp. 412-415
Author(s):  
Yu De Liu ◽  
Bo Quan Jiang ◽  
Zheng Qiang Xiao
Keyword(s):  
Activated Carbon ◽  
Copper Oxide ◽  
Orthogonal Experiment ◽  
Chemical Activation ◽  
Copper Nitrate ◽  
Color Removal ◽  
Removal Rates ◽  
Activation Temperature ◽  
Coconut Shells ◽  
Coconut Shell Activated Carbon

The activated carbon loaded copper oxide catalyst was prepared from Hainan abandoned coconut shells using chemical activation method and applied in treatment of acid bright red GR simulation dyeing wastewater. The effects of phosphoric acid concentration, ratio of liquid to solid, activation time and activation temperature on the COD and color removal rates were investigated by orthogonal experiment. The results showed that the optimal values of the parameters above were 65% (in mass), 3:1, 2.5h and 500°C under the designed copper oxide loading conditions of calcining temperature 300°C,calcining time 3.0 h and use level of copper nitrate 15 mL. Using the prepared sample for the treatment of the wastewater, the COD and color removal rates reached 94.384% and 99.840%, respectively.

Preparation of Eupatorium Adenophorum Based Porous Carbon with Microwave Heating using Response Surface Methodology

2014 ◽  
Vol 33 (5) ◽  
pp. 427-437
Author(s):  
Zhao-qiang Zheng ◽  
Hong-ying Xia ◽  
C. Srinivasakannan ◽  
Jin-hui Peng ◽  
Li-bo Zhang
Keyword(s):  
Activated Carbon ◽  
Microwave Heating ◽  
Process Parameters ◽  
Flow Rate ◽  
Porous Carbon ◽  
Steam Flow ◽  
Process Conditions ◽  
Eupatorium Adenophorum ◽  
Activation Temperature ◽  
Steam Flow Rate

AbstractEupatorium adenophorum was utilized as raw materials for the preparation of activated carbon via microwave assisted steam activation. Influences of the three vital process parameters – activation temperature, activation duration and steam flow rate – have been assessed on the adsorption capacity and yield of Eupatorium adenophorum activated carbon (EAAC). The process parameters were optimized utilizing the Design Expert software and were identified to be an activation duration of 45 min, an activation temperature of 950 °C and a steam flow rate of 0.7 ml/min, with the resultant iodine number and yield being 1,010 mg/g and 20.13% respectively. The validity of process model to optimize the process parameters was verified using the analysis of variance (ANOVA). The key parameters that characterize quality of the porous carbon such as the BET surface area, total pore volume and average pore diameter were estimated to be 1,142 m2/g, 0.84 ml/g and 3.3 nm respectively, for the sample corresponding to the optimized process conditions. Additionally the pore structure is characterized using Scanning Electron Microscope (SEM). The present work strongly supports utilization of Eupatorium adenophorum as a potential precursor through microwave heating.

scholarly journals Production of activated carbon from sludge and herb residue of traditional Chinese medicine industry and its application for methylene blue removal

BioResources ◽  
2019 ◽  
Vol 14 (1) ◽  
pp. 1333-1346 ◽  
Author(s):  
Zhenwei Yu ◽  
Qi Gao ◽  
Yue Zhang ◽  
Dandan Wang ◽  
Innocent Nyalala ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Chinese Medicine ◽  
Design Method ◽  
Orthogonal Experimental Design ◽  
Blue Dye ◽  
Process Conditions ◽  
Activation Time ◽  
Activation Temperature ◽  
Impregnation Ratio

Sludge-based activated carbon (SAC) was prepared with sewage sludge and Chinese medicine herbal residues (CMHR’s). An orthogonal experimental design method was used to determine the optimum preparation conditions. The effects of the impregnation ratio, activation temperature, activation time, and addition ratio of CMHR’s on the iodine value and Brunauer-Emmett-Teller surface area of activated carbon were studied. X-ray diffraction, Fourier-transform infrared spectrometer, and scanning electron microscopy were used to characterize the prepared SAC. The results showed that the optimal process conditions for preparing the SAC were as follows: an impregnation ratio of 1:4, an activation time of 30 min, an activation temperature of 700 °C, and an addition ratio of CMHR’s of 40%. The adsorption balance of the methylene blue dye was examined at room temperature. Adsorption isotherms were obtained by fitting the data using the Langmuir and Freundlich models, which showed that methylene blue adsorption was most suitable for the Langmuir equation. The results demonstrated that SAC prepared from SS and CMHR’s from a Chinese medicine factory could effectively expel dyes from wastewater.

Study on Microwave Combined with Active Carbon for the COD Remove of Amoxicillin Wastewater

2013 ◽  
Vol 295-298 ◽  
pp. 1348-1352 ◽  
Author(s):  
Quan Li Feng ◽  
Xue Qian Wang ◽  
Yu Jia ◽  
Ping Ning
Keyword(s):  
Activated Carbon ◽  
Active Carbon ◽  
Ph Value ◽  
Irradiation Time ◽  
Granular Activated Carbon ◽  
Cod Removal ◽  
Removal Rates

This paper makes the amoxicillin production wastewater as the research target and uses the microwave-activated carbon to treat this kind of wastewater. The results show that 6g of the 60 purpose granular activated carbon mixed with 50ml of the wastewater that diluted 10 times and the pH value is 9 under the condition that irradiated power up to 480W and the irradiation time for 7min, the COD removal rates is up to 96.38% and the effluent COD value is 48.28mg/L.

Preparation and Decolorization Properties of Active Industrial Vermiculites

2010 ◽  
Vol 178 ◽  
pp. 210-215
Author(s):  
Bai Li Su ◽  
Tong Jiang Peng ◽  
Guo Hua Ma
Keyword(s):  
Acid Concentration ◽  
Adsorption Properties ◽  
Optimum Process ◽  
Process Conditions ◽  
Acid Activation ◽  
Activation Time ◽  
Activation Temperature ◽  
Rate Testing ◽  
Cationic Exchange ◽  
Decoloration Rate

Based on cationic exchange and adsorption properties of industrial vermiculites, acid-activation processing and decoloration rate testing for industrial raw vermiculite samples industrial vermiculite samples from the Yuli Mine in Xinjiang Uygur Autonomous Region were researched. Some factors that influenced the acid-activated products adsorption and the decolorization performance were investigated, such as acid concentration, activation time, activation temperature etc., and optimum process conditions were developed as follows: the acid concentration was 3.0 mol/L, the activation time was 3 h and the activation temperature was 90°C, under these conditions, the decoloration rate of acid-activated sample was 88.46%.

Research on Active Carbon Adsorption for the Amoxicillin Wastewater

2013 ◽  
Vol 295-298 ◽  
pp. 1235-1239 ◽  
Author(s):  
Quan Li Feng ◽  
Xue Qian Wang ◽  
Yu Jia ◽  
Ping Ning
Keyword(s):  
Activated Carbon ◽  
Active Carbon ◽  
Ph Value ◽  
Water Concentration ◽  
Cod Removal ◽  
Feed Water ◽  
Wastewater Discharge ◽  
Removal Rates ◽  
Adsorption Time ◽  
Carbon Adsorption

The experiment has study on the COD removal influence of the amoxicillin production wastewater of the feed water concentration, pH value, Activated carbon types, Adsorption time and active carbon dosage. The results show that 5g activated carbon mixed with 50ml of the wastewater that diluted 15 times, the pH value is 6, and adsorption for 60 min, the COD removal rates is up to 95.61% and the effluent COD value is 62.14 mg/L. It is far lower than the current the wastewater discharge standards in our country.

scholarly journals Optimization of process conditions for preparation of activated carbon from waste Salix psammophila and its adsorption behavior on fluoroquinolone antibiotics

2018 ◽  
Vol 77 (11) ◽  
pp. 2555-2565 ◽  
Author(s):  
Xiao Liu ◽  
Yibei Wan ◽  
Penglei Liu ◽  
Lei Zhao ◽  
Weihua Zou
Keyword(s):  
Activated Carbon ◽  
Adsorption Process ◽  
Chemical Activation ◽  
Adsorption Behavior ◽  
Isotherm Models ◽  
Process Conditions ◽  
Activation Time ◽  
Activation Temperature ◽  
Fluoroquinolone Antibiotics ◽  
Equilibrium Data

Abstract Salix psammophila (SP), a solid waste abundantly available, was applied as a precursor to prepare the activated carbon by chemical activation method using phosphoric acid (H3PO4). Response surface methodology based on Box-Behnken design was used to optimize the prepared conditions of activated carbon. The effects of concentration of H3PO4, activation temperature and activation time on the adsorption performance (expressed by the adsorption capacity of ciprofloxacin hydrochloride (CIP) and norfloxacin (NOR)) were investigated. The optimum conditions were obtained using H3PO4 concentration of 67.83%, activation temperature of 567.44 °C and activation time of 86.61 min. The optimum activated carbon (SPAC) was characterized with scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), Brunauer–Emmett–Teller (BET) and Fourier transform infrared spectroscopy (FTIR). The adsorption behavior of CIP and NOR on SPAC was carried out and the mechanisms for the adsorption process were proposed. The equilibrium data were fitted by the Freundlich and Langmuir isotherm models, which resulted in 251.9 mg/g and 366.9 mg/g of the maximum monolayer adsorption for CIP and NOR at 25 °C, respectively. The best fitted kinetic model was pseudo-second-order, implying that chemisorption dominated in the adsorption process. This study indicated that activated carbon based on Salix psammophila (SPAC) was an excellent adsorbent for removing fluoroquinolone antibiotics from aqueous solutions.

Efficiency of Ozone, Activated Carbon and Microorganisms in Decolorisation of Pulp and Paper Mill Effluent

2009 ◽  
Vol 4 (2) ◽  
Author(s):  
W. Apiwatanapiwat ◽  
W. Phochinda ◽  
T. Kreetachat ◽  
P. Vaithanomsat
Keyword(s):  
Activated Carbon ◽  
Removal Efficiency ◽  
Retention Time ◽  
Paper Mill ◽  
Cod Removal ◽  
Color Removal ◽  
Pulp And Paper Mill ◽  
Paper Mill Effluent ◽  
Us Dollar ◽  
Color And Cod Removal

The efficiency of decolorisation and COD removal from pulp and paper mill effluent using ozone, activated carbon and microorganism were compared. The results showed that the highest color removal efficiency of 83.42% was obtained when ozone method was used with optimal pH 9 and retention time 60 min. However, the COD was decreased only by 5.50% at pH 9 and retention time 40 min. Similar COD removal efficiency of 68.99% was observed when activated carbon with pH 2 and retention time 180 min was employed and for microbial method, the COD removal efficiency of 77.67% was obtained when pH 7 and retention time 6 days was applied. While the efficiency in color removal using the microbial method was lower (36.2%) which was at pH 4.5 and retention time 2 days than that removed using activated carbon which was 79.79% at pH 2 and retention time 180 min. When an operation cost for each method was compared, it was found that the microbial treatment consumed the cost of 587.82 US dollar/1,000 L for color removal and 29,760 US dollar/1,000 L for COD removal whereas the ozone treatment consumed the lowest cost for both color and COD removal of 24.0 US dollar/1,000 L and 9.3 US dollar/1,000 L, respectively. Similarly, the activated carbon adsorption method consumed low cost for both color and COD removal of 40.62 US dollar/1,000 L.

scholarly journals Optimum Process Parameters for Activated Carbon Production from Rice Husk for Phenol Adsorption

2019 ◽  
pp. 1-11
Author(s):  
Iheanacho Chamberlain Ositadinma ◽  
Nwabanne Joseph Tagbo ◽  
Onu Chijioke Elijah
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Surface Area ◽  
Acid Concentration ◽  
Rice Husk ◽  
Process Parameters ◽  
Carbonization Temperature ◽  
Optimum Process ◽  
Process Conditions ◽  
Carbon Production

Aim: The determination of optimum process parameters in the production of activated carbon from rice husk for the uptake of phenol from aqueous solution was the focus of this work. Study Design: The optimization was designed using response surface methodology. Methodology: Central composite design (CCD) was used to generate the design matrix and analyze the result obtained. Carbonization temperature, percentage acid concentration and carbonization time were the factors considered. Tetraoxophosphoric acid (H3PO4) was employed in the activation process. The surface area was determined using the Brunauer-Emmet-Teller (BET) nitrogen adsorption method. Results: The result indicated the optimum process conditions as carbonization temperature of 575ºC, time of 240 minutes and 45 percentage acid concentration. This gave 96.5% adsorption efficiency of phenol from aqueous solution. There was good agreement between the experimental values and the predicted values. The BET surface area of the activated carbon was 471.1 m2/s. Conclusion: This work has optimized the process conditions for activated carbon production from rice husk for effective adsorption of phenol from wastewater.

Sign in / Sign up

Export Citation Format

Share Document