Tyrosine-Immobilized Montmorillonite: An Efficient Adsorbent for Removal of Pb2+ and Cu2+ from Aqueous Solution

2019 ◽  
Vol 64 (8) ◽  
pp. 3535-3546 ◽  
Author(s):  
Yuting Chu ◽  
Sidi Zhu ◽  
Fengyun Wang ◽  
Wu Lei ◽  
Mingzhu Xia ◽  
...  
Author(s):  
Yu Song ◽  
Qing Wang ◽  
Wenjuan Yang ◽  
Qilin Chen ◽  
Yafen Zhou ◽  
...  

2018 ◽  
Vol 18 (7) ◽  
pp. 4692-4699 ◽  
Author(s):  
Tingshun Jiang ◽  
Mingfeng Dong ◽  
Lu Yan ◽  
Minglan Fang ◽  
Ruifeng Liu

RSC Advances ◽  
2014 ◽  
Vol 4 (76) ◽  
pp. 40580-40587 ◽  
Author(s):  
Prasanta Kumar Raul ◽  
Samarpita Senapati ◽  
Ashish K. Sahoo ◽  
Iohborlang M. Umlong ◽  
Rashmi R. Devi ◽  
...  

CuO nanorods can remove Pb(ii) from aqueous solution with a maximum sorption capacity of 3.31 mg g−1at 298 K.


2017 ◽  
Vol 41 (16) ◽  
pp. 8031-8035 ◽  
Author(s):  
An Wang ◽  
Miao Jin ◽  
Na Li ◽  
Yan Ma ◽  
Ling Chen ◽  
...  

A monolithic mesoMOF based on ZIF-8 is created as an efficient adsorbent for toluene from aqueous solution.


2019 ◽  
Vol 103 ◽  
pp. 104645 ◽  
Author(s):  
J. Vidya ◽  
A. John Bosco ◽  
K. Haribaaskar ◽  
P. Balamurugan

Water ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 781 ◽  
Author(s):  
Wang ◽  
Zhang ◽  
Lv

The removal efficiency and mechanism of Cr(VI) removal from aqueous solution on semi-decomposed maize straw biochars pyrolyzed at 300 to 600 °C were investigated. The removal of Cr(VI) by the biochars decreased with pyrolysis temperature increasing from 300 to 600 °C, and the maximum removal capacity of Cr(VI) for maize straw biochar pyrolyzed at 300 °C was 91 mg/g at pH 2.0. The percentage removal of Cr(VI) rapidly decreased with pH increasing from 2.0 to 8.0, with the maximum (>99.9%) at pH 2.0. The variation of Cr(VI) and Cr(III) concentrations in the solution after reaction showed that Cr(VI) concentration decreased while Cr(III) increased and the equilibrium was reached after 48 h, while the redox potential after reaction decreased due to Cr(VI) reduction. X-ray photoelectron spectroscopy (XPS) semi-quantitative analysis showed that Cr(III) accounted for 75.7% of the total Cr bound to maize straw biochar, which indicated reductive adsorption was responsible for Cr(VI) removal by the biochars. Cr(VI) was firstly adsorbed onto the positively charged biochar surface and reduced to Cr(III) by electrons provided by oxygen-containing functional groups (e.g., C=O), and subsequently part of the converted Cr(III) remained on the biochar surface and the rest released into solution. Fourier transform infrared (FTIR) data indicated the participation of C=O, Si–O, –CH2 and –CH3 groups in Cr(VI) removal by the biochars. This study showed that maize straw biochar pyrolyzed at 300 °C for 2 h was one low-cost and efficient adsorbent for Cr(VI) removal from aqueous solution.


2019 ◽  
Vol 4 (19) ◽  
pp. 5925-5936 ◽  
Author(s):  
Priyanka Rout ◽  
Amulya Prasad Panda ◽  
Kishore K. Jena ◽  
Saeed M. Alhassan ◽  
Sanjukta A. Kumar ◽  
...  

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