Efficient Gold Recovery from Cyanide Solution Using Magnetic Activated Carbon

2021 ◽  
Vol 13 (40) ◽  
pp. 47642-47649
Author(s):  
Jinsong Xia ◽  
Harshit Mahandra ◽  
Ahmad Ghahreman
Keyword(s):  
Activated Carbon ◽  
Cyanide Solution ◽  
Gold Recovery ◽  
Magnetic Activated Carbon

Preparing a magnetic activated carbon with expired beverage as carbon source and KOH as activator

2019 ◽  
Vol 96 ◽  
pp. 575-587 ◽  
Author(s):  
Yunjie Liu ◽  
Zhibao Huo ◽  
Zhiyuan Song ◽  
Chuntao Zhang ◽  
Dezhang Ren ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Source ◽  
Magnetic Activated Carbon

scholarly journals Efficient tetracycline removal from aqueous solutions using ionic liquid modified magnetic activated carbon (IL@mAC)

2021 ◽  
Author(s):  
Edris Bazrafshan ◽  
Amin Allah Zarei ◽  
Leili Mohammadi ◽  
Muhammad Nadeem Zafar ◽  
Maryam Foroughi ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Activated Carbon ◽  
Wastewater Treatment Plants ◽  
Correlation Coefficients ◽  
Antibacterial Drug ◽  
Adsorption Efficiency ◽  
Operational Parameters ◽  
Magnetic Activated Carbon ◽  
Urban Wastewater Treatment ◽  
Poor Absorption

Abstract Tetracycline (TCy) belongs to PPCPs is such an widely used antibacterial drug, which is discharged from urban wastewater treatment plants or agricultural effluents. Due to low metabolism, poor absorption, overuse, and misuse, TCy is considered as threat to environmental and its removal from waste-water is vital. In this research, a novel ionic liquid modified magnetic activated carbon nanocomposite (IL@mAC) was synthesized, characterized, and the adsorption efficiency of IL@mAC for removal of TCy was investigated under different operational parameters of pH (3–11); dose of IL@mAC (0.01–0.1 g/50 mL); reaction time (30–240 min), and initial TCy concentration (50-1500 mg/L). The IL@mAC characterization was done using XRD, VSM, SEM-EDX, BET, and FTIR. Results of equilibrium experiment showed that the highest removal efficiency (~ 98%) was obtained using 0.06 g of IL@mAC in 135 min at pH 7 and temperature 303 K. Considering the correlation coefficients (R2) for different adsorption models, it can be deduced that adsorption of TCy onto IL@mAC is better followed by Langmuir (0.9977) in comparison to Freundlich (0.9412), and Temkin (0.9536) models. Furthermore, Langmuir adsorption capacity was observed to be 666.7 mg/g. The regeneration study showed that IL@mAC retained around 85% TCy adsorption efficiency after 6th cycle. Finally, the present study indicates that the IL@mAC is of a high applicability and has extremely high adsorbent capacity to remove TCy from water compared to most of other benchmark adsorbents reported in literature.

Preparation and characterization of magnetic activated carbon as non-hemolytic material

2021 ◽  
Author(s):  
Kafa Khalaf Hammud ◽  
Naseer Mohammed Imra ◽  
Mohammed Hashem Khalil ◽  
Nibras Abdul Hussain Akosh ◽  
Faehaa Mseer Hamza ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Magnetic Activated Carbon

Iron-Cobalt Magnetic Activated Carbon as an Effective Adsorbent for the Removal of Methylene Blue and Acid Blue 80

NANO ◽  
2021 ◽  
pp. 2150068
Author(s):  
Zhao Yang ◽  
Zhongwei Zhao ◽  
Xuan Yang ◽  
Zongli Ren
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Organic Dyes ◽  
Removal Rate ◽  
Recovery Process ◽  
Adsorption Activity ◽  
Magnetic Activated Carbon ◽  
Pseudo Second Order ◽  
Repeated Use ◽  
Acid Blue

For the treatment of dye wastewater, it is of great significance to develop new adsorbents with high adsorption capacity and good separation effect. In this study, the Fe-Co magnetic activated carbon material (CN-Fe-Co-AC) was first prepared by high-temperature calcination. CN-Fe-Co-AC is physically characterized by various methods. CN-Fe-Co-AC can efficiently and quickly remove the organic dyes methylene blue (MB) and acid blue 80 (AB80). The adsorption of MB and acid blue based on CN-Fe-Co-AC adsorbent is mainly through the specific surface area and the functional groups on the surface. During this recovery process, the adsorption activity of CN-Fe-Co-AC for MB and AB80 decreased slightly. Kinetic data can be described using a Pseudo-second-order model and the data for adsorption equilibrium can be described using the Langmuir isotherm. The theoretical adsorption capacities of MB and AB80 are 104.82[Formula: see text]mg/g and 26.94[Formula: see text]mg/g, respectively. After repeated use of five times, the removal rate of MB exceeded 96%, and the removal rate of AB80 exceeded 75%. The excellent adsorption performance and recyclability of CN-Fe-Co-AC indicate that this material has certain potential application value.

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