Please use this identifier to cite or link to this item:
|Title:||Improved adsorption of 4-nitrophenol onto a novel hyper-cross-linked polymer|
|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|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Feb 15, 2018
WEB OF SCIENCETM
checked on Jan 30, 2018
checked on Feb 19, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.