Microwave-synthesized and Fenton-functionalized Pinus sylvestris bark activated carbon/metal oxides for the effective uptake of tetracycline and congo red dye

2019 ◽  
Vol 10 (4) ◽  
pp. 959-975 ◽  
Author(s):  
Martins O. Omorogie ◽  
Jonathan O. Babalola ◽  
Abimbola M. Olatunde ◽  
Taofeek Alimi ◽  
Kingsley I. John ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Pinus Sylvestris ◽  
Metal Oxides ◽  
Congo Red ◽  
Congo Red Dye ◽  
Red Dye

Insight into adsorption mechanism of Congo red dye onto Bombax Buonopozense bark Activated-carbon using Central composite design and DFT studies

2021 ◽  
Vol 23 ◽  
pp. 100977
Author(s):  
Youness Achour ◽  
Lahoucine Bahsis ◽  
El-Houssaine Ablouh ◽  
Hicham Yazid ◽  
My Rachid Laamari ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Central Composite Design ◽  
Congo Red ◽  
Adsorption Mechanism ◽  
Dft Studies ◽  
Congo Red Dye ◽  
Red Dye ◽  
Central Composite ◽  
Insight Into

Comparative Study on Commercial and Corn Cobs Activated Carbon for Removal of Congo Red Dye

2015 ◽  
Vol 787 ◽  
pp. 233-237 ◽  
Author(s):  
K.R. Leelavathy ◽  
V. Nageshwaran ◽  
M. Bharathi
Keyword(s):  
Activated Carbon ◽  
Congo Red ◽  
Tamil Nadu ◽  
Human Life ◽  
Vital Role ◽  
Adsorbent Dosage ◽  
Corn Cobs ◽  
Congo Red Dye ◽  
Initial Ph ◽  
Red Dye

Garments plays a vital role among the basic needs of human life, hence there are lots of demand and production of dyestuffs every year to colour the fabrics. In the dyeing process 10 to 20% of the dyes are wasted as effluent. Dye laden wastewater is treated by biological or chemical treatment which is found to be inadequate and expensive. In this study, an attempt has been made to prepare an activated carbon from agro-waste based material, Corn Cobs which are abundantly available in Tamil Nadu. Base activation of Corn Cobs was done with ZnCl2 solution for 12 hours and carbonized at 350º C for 2 hours. A kinetic experimental study was carried out for Congo red dye removal. In the preliminary studies both the Commercial Activated Carbon (CAC) and Corn Cobs Activated Carbon (CCAC) with various initial adsorbate concentration of 50, 65, 75, 100 and 125 ppm were considered. For further studies on the effect of various parameters such as the contact time and adsorbent dosage, initial concentration of adsorbate was chosen as 65 ppm. The other experimental parameters such as temperature and initial pH were kept at 27±0.5°C and 6.8±0.2 respectively. The experimental results of both CAC and CCAC were compared. The CCAC showed a removal of 97.8% at an adsorbent dosage of 1.2 g, whereas the CAC showed a removal of 98.1% at a dosage of 0.3 g. The result shows that CCAC has abundant potential for the removal of dye.

Copolymerization of catechol and polyethyleneimine onto activated carbon for efficient removal of Congo red dye

2021 ◽  
pp. 52050
Author(s):  
Dexiang Yan ◽  
Fenghua Li ◽  
Bin Sun ◽  
Yuanbo Wang ◽  
Qinze Liu ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Congo Red ◽  
Efficient Removal ◽  
Congo Red Dye ◽  
Red Dye

scholarly journals Adsorption of congo red dye from aqueous solutions by prepared activated carbon with oxygen-containing functional groups and its regeneration

2018 ◽  
Vol 37 (1-2) ◽  
pp. 160-181 ◽  
Author(s):  
Ridha Lafi ◽  
Imed Montasser ◽  
Amor Hafiane
Keyword(s):  
Activated Carbon ◽  
Functional Groups ◽  
Congo Red ◽  
Contact Time ◽  
Electrostatic Interactions ◽  
Dye Adsorption ◽  
Congo Red Dye ◽  
Equilibrium Data ◽  
Red Dye ◽  
Adsorption Desorption

This study investigates the potential use of activated carbon prepared from coffee waste (CW) as an adsorbent for the removal of congo red dye from aqueous solution. The oxygen-containing groups of activated carbon prepared from CW play an important role in dyes ions adsorption onto activated carbon prepared from CW. The activated carbon is characterized by scanning electron microscopy and Fourier transform infrared (FTIR) spectroscopy. Adsorption experiments were carried out as batch studies at different contact time, pH, and initial dye concentration. The dye adsorption equilibrium was attained after 120 min of contact time. Removal of dye in acidic solutions was better than in basic solutions. The adsorption of dye increased with increasing initial dye concentration. The equilibrium data were revealed that Langmuir model was more suitable to describe the congo red adsorption and demonstrated excellent reusability potential with desorption greater than 90% throughout six consecutive adsorption–desorption cycles. Experimental data founded that kinetics followed a pseudo-second-order equation. Thermodynamic study showed that the adsorption was a spontaneous and exothermic process. According to the FTIR analyses, hydrogen bonding and electrostatic interactions between dyes and oxygen-containing functional groups on activated carbon prepared from CW are dominant mechanisms for dye adsorption.

Sequestration of toxic congo red dye from aqueous solution using ecofriendly guar gum/ activated carbon nanocomposite.

2020 ◽  
Vol 158 ◽  
pp. 1310-1318 ◽  
Author(s):  
Vinod Kumar Gupta ◽  
Shilpi Agarwal ◽  
Rais Ahmad ◽  
Anam Mirza ◽  
Jyoti Mittal
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Congo Red ◽  
Guar Gum ◽  
Congo Red Dye ◽  
Red Dye ◽  
Carbon Nanocomposite
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