scholarly journals Adsorption kinetic models of heavy metal ions on granular activated carbon

2015 ◽  
Vol 56 (2) ◽  
pp. 179-190 ◽  
Author(s):  
Aleksandra Porjazoska-Kujundziski ◽  
Liljana Markovska ◽  
Verka Meshko
2021 ◽  
Vol 221 ◽  
pp. 239-251
Author(s):  
Syed Muhammad Salman ◽  
Fouzia Kamal ◽  
Muhammad Zahoor ◽  
Muhammad Wahab ◽  
Durr e Shahwar ◽  
...  

Materials ◽  
2019 ◽  
Vol 12 (2) ◽  
pp. 241 ◽  
Author(s):  
Jian Guo ◽  
Yaqin Song ◽  
Xiaoyang Ji ◽  
Lili Ji ◽  
Lu Cai ◽  
...  

The aim of this study was to optimize the adsorption performance of activated carbon (AC), derived from the shell of Penaeus vannamei prawns, on heavy metal ions. Inexpensive, non-toxic, and renewable prawn shells were subjected to carbonization and, subsequently, KOH-activation to produce nanoporous K-Ac. Carbonized prawn shells (CPS) and nanoporous KOH-activated carbon (K-Ac) from prawn shells were prepared and characterized by FTIR, XRD, BET, SEM, and TEM. The results showed that as-produced K-Ac samples were a porous material with microporous and mesoporous structures and had a high specific surface area of 3160 m2/g, average pore size of about 10 nm, and large pore volume of 2.38 m3/g. Furthermore, batches of K-Ac samples were employed for testing the adsorption behavior of Cd2+ in solution. The effects of pH value, initial concentration, and adsorption time on Cd2+ were systematically investigated. Kinetics and isotherm model analysis of the adsorption of Cd2+ on K-Ac showed that experimental data were not only consistent with the Langmuir adsorption isotherm, but also well-described by the quasi-first-order model. Finally, the adsorption behaviors of as-prepared K-Ac were also tested in a ternary mixture of heavy metal ions Cu2+, Cr6+, and Cd2+, and the total adsorption amount of 560 mg/g was obtained.


2020 ◽  
Vol 6 (2) ◽  
pp. 331-340 ◽  
Author(s):  
Cuijiao Zhao ◽  
Xinlei Wang ◽  
Shengbo Zhang ◽  
Na Sun ◽  
Hongjian Zhou ◽  
...  

Porous graphitic carbon nanosheets functionalized by ultrafine Fe3O4 NPs and amino-functionalized activated carbon were developed to construct a hybrids capacitive deionization for efficient removal of multiple heavy metal ions in water.


2007 ◽  
Vol 15 (5) ◽  
pp. 593-599 ◽  
Author(s):  
Paunka Vassileva ◽  
Penka Tzvetkova ◽  
Lako Lakov ◽  
Ognyan Peshev

2007 ◽  
Vol 253 (20) ◽  
pp. 8554-8559 ◽  
Author(s):  
Sanae Sato ◽  
Kazuya Yoshihara ◽  
Koji Moriyama ◽  
Motoi Machida ◽  
Hideki Tatsumoto

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