Please use this identifier to cite or link to this item: https://doi.org/10.1021/es070134d
Title: Improved adsorption of 4-nitrophenol onto a novel hyper-cross-linked polymer
Authors: Pan, B.
Du, W.
Zhang, W.
Zhang, X.
Zhang, Q.
Pan, B.
Lv, L. 
Zhang, Q.
Chen, J.
Issue Date: 15-Jul-2007
Source: Pan, B.,Du, W.,Zhang, W.,Zhang, X.,Zhang, Q.,Pan, B.,Lv, L.,Zhang, Q.,Chen, J. (2007-07-15). Improved adsorption of 4-nitrophenol onto a novel hyper-cross-linked polymer. Environmental Science and Technology 41 (14) : 5057-5062. ScholarBank@NUS Repository. https://doi.org/10.1021/es070134d
Abstract: In the present study we prepared a hyper-cross-linked polymeric adsorbent (NDA-701) possessing a uniquely bimodal pore size distribution for 4-nitrophenol (4-NP) adsorption from water. A macroporous polymeric adsorbent Amberlite XAD-4 and a granular activated carbon GAC-1 were chosen for comparison. NDA-701 exhibited better mechanical strength and higher capacity of 4-NP than XAD-4, which possibly resulted from its hyper-cross-linking nature and micropore structure, respectively. 4-NP adsorption isotherm onto NDA-701 is well described by the Freundlich model, and its better kinetics performance than GAC-1 resulted from its macropore structure After adsorption NDA-701 was amenable to an entire regeneration by using NaOH solution as regenerant, whereas only ∼75% regeneration efficiency was observed for GAC-1. Results of continuous fixed-bed runs in pilot and industrial scale demonstrated that NDA-701 is capable of completely removing 4-NP from chemical effluent with no capacity loss, and 4-NP can be readily recovered by further treatment of the concentrated regenerant solution. It is attractive that the value of the recovered 4-NP from chemical wastewater will even engender a surplus after countervailing all the operation cost during field application. © 2007 American Chemical Society.
Source Title: Environmental Science and Technology
URI: http://scholarbank.nus.edu.sg/handle/10635/67658
ISSN: 0013936X
DOI: 10.1021/es070134d
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

92
checked on Dec 13, 2017

WEB OF SCIENCETM
Citations

83
checked on Oct 31, 2017

Page view(s)

20
checked on Dec 9, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.