47 Pulp of wood or of other fibrous cellulosic material; waste and scrap paper or paperboard: OECD Total

2021 ◽  
Vol 2020 (6) ◽  
Keyword(s):  
Cellulosic Material

Cellulose-g-tetraethylenepentamine Dual-function Imprinted Polymers Selectively and Effectively Adsorb and Remove 4-Nitrophenol and Cr(VI)

2021 ◽  
Author(s):  
Daning Lang ◽  
Xia Xu ◽  
Ronglan Wu ◽  
WEI WANG ◽  
Ming Shi ◽  
...  
Keyword(s):  
Binary Systems ◽  
Competitive Adsorption ◽  
Dual Function ◽  
Imprint Polymer ◽  
Inorganic Contaminants ◽  
Cellulosic Material ◽  
Imprinted Polymer ◽  
Promising Candidate ◽  
Adsorption Sites ◽  
Amine Groups

Abstract A cellulosic material could efficiently and selectively adsorb organic and inorganic contaminants from aqueous solutions without interference from competing adsorption sites. In this study, cellulose-graft-tetraethylenepentamin molecular imprinted polymer (C-TEPA-MIP) was synthesized by using 4-nitrophenol (4-NP) as the template. The C-TEPA-MIP adsorbent could adsorb 4-NP and Cr(VI) simultaneously and selectively, without being affected by the competitive adsorption sites of each of these pollutants. The adsorption of 4-NP was predominantly due to the imprinted sites of 4-NP in C-TEPA-MIP that were located inside of the adsorbent, whereas that of Cr(VI) was primarily due to the amine groups of TEPA found on the surface of the adsorbent. Compared with the non-imprint polymer synthesized without the template, C-TEPA-MIP showed higher selectivity for both 4-NP and Cr(VI) in unitary and binary systems. In addition, C-TEPA-MIP exhibited good stability and recyclability for 4-NP, which makes it a promising candidate material for applications concerning wastewater treatment.

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