Removal of methyl orange from aqueous solutions by polydopamine-mediated surface functionalization of Fe3O4 in batch mode

2018 ◽  
Vol 115 ◽  
pp. 271-280 ◽  
Author(s):  
Minyuan Han ◽  
Qing Wang ◽  
Hui Li ◽  
Liyan Fang ◽  
Runping Han
2015 ◽  
Vol 1 (2) ◽  
pp. 36-41
Author(s):  
Laura Cocheci ◽  
◽  
Ancuta-Corina Marcu ◽  
Paul Barvinschi ◽  
Aniela Pop

2010 ◽  
Vol 9 (1) ◽  
pp. 107-112 ◽  
Author(s):  
Igor Cretescu ◽  
Mariana Diaconu ◽  
Cornel Cojocaru ◽  
Roxana Elena Benchea ◽  
Cornel Pohontu
Keyword(s):  

2020 ◽  
Vol 11 (4) ◽  
pp. 11891-11904

In the present study, batch mode adsorption was carried out to investigate the adsorption capacity of dried bael flowers (Aegle marmelos) for the adsorptive removal of Cu(II) ions from aqueous solutions by varying agitation time, initial metal concentration, the dose of adsorbent, temperature, and initial pH of the Cu(II) ion solution. The percentage removal of 98.7% was observed at 50 ppm initial metal ion concentration, 0.5 g/100.00 cm3 adsorbent dosage, within the contact time of 120 minutes at 30 ºC in the pH range of 4 – 7. The sorption processes of Cu(II) ions was best described by pseudo-second-order kinetics. Langmuir isotherm had a good fit with the experimental data with 0.97 of correlation coefficient (R2), and the maximum adsorption capacity obtained was 23.14 mg g-1 at 30 ºC. The results obtained from sorption thermodynamic studies suggested that the adsorption process is exothermic and spontaneous. SEM analysis showed tubular voids on the adsorbent. FTIR studies indicated the presence of functional groups like hydroxyl, –C-O, –C=O, and amide groups in the adsorbent, which can probably involve in metal ion adsorption. Therefore, dried bael flowers can be considered an effective low-cost adsorbent for treating Cu(II) ions.


2019 ◽  
Vol 533 ◽  
pp. 678-691 ◽  
Author(s):  
Megg Madonyk Cota Elias ◽  
Gabriel Max Dias Ferreira ◽  
Francine Tatiane Rezende de Almeida ◽  
Nathália Cristina Martins Rosa ◽  
Isabela Almeida Silva ◽  
...  

2019 ◽  
Vol 55 (8) ◽  
pp. 3329-3346 ◽  
Author(s):  
Jian Zou ◽  
Kun Wu ◽  
Huadong Wu ◽  
Jia Guo ◽  
Linfeng Zhang

2017 ◽  
Vol 43 (7) ◽  
pp. 3975-3987 ◽  
Author(s):  
Yan Wang ◽  
Bingqian Han ◽  
Nan Chen ◽  
Xinxin Xing ◽  
Dongyang Deng ◽  
...  

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