Rapid removal of polyacrylamide from wastewater by plasma in the gas-liquid interface

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境水质学国家重点实验室

	Rapid removal of polyacrylamide from wastewater by plasma in the gas-liquid interface
	Song, Wenzhe ; Zhang, Yu ; Yu, Jianwei ; Gao, Yingxin ; Naitoc, Teruki ; Oinumac, Gaku ; Inanagac, Yasutaka ; Yang, Min
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES
	2019-09-01
卷号	83 页码:1-7
关键词	Offshore oilfield Hydroxyl radical Plasma Polyacrylamide (PAM) Produced wastewater
ISSN号	1001-0742
英文摘要	Due to the severe restrictions imposed by legislative frameworks, the removal of polyacrylamide (PAM) rapidly and effectively from produced wastewater in offshore oilfields before discharge is becoming an urgent challenge. In this study, a novel advanced oxidation process based on plasma operated in the gas-liquid interface was used to rapidly decompose PAM, and multiple methods including viscometry, flow field-flow fractionation multi-angle light scattering, UV-visible spectroscopy, and attenuated total reflectance Fourier transform infrared spectroscopy were used to characterize the changes of PAM. Under a discharge voltage of 25 kV and pH 7.0, the PAM concentration decreased from 100 to 0 mg/L within 20 min and the total organic carbon (TOC) decreased from 49.57 to 1.23 mg/L within 240 min, following zero-order reaction kinetics. Even in the presence of background TOC as high as 152.2 mg/L, complete removal of PAM (100 mg/L) was also achieved within 30 min. The biodegradability of PAM improved following plasma treatment for 120 min. Active species (such as O-3 and H2O2) were produced in the plasma. Hydroxyl radical was demonstrated to play an important role in the degradation of PAM due to the inhibitory effect observed after the addition of an center dot OH scavenger, Na2CO3. Meanwhile, the release of ammonia and nitrate nitrogen confirmed the cleavage of the acylamino group. The results of this study demonstrated that plasma, with its high efficiency and chemical-free features, is a promising technology for the rapid removal of PAM. (C) 2019 The Research Center for Eco- Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/42667]
专题	生态环境研究中心_环境水质学国家重点实验室
作者单位	1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Mitsubishi Electr Corp, Adv Technol R&D Ctr, Kobe, Hyogo 6618661, Japan
推荐引用方式 GB/T 7714	Song, Wenzhe,Zhang, Yu,Yu, Jianwei,et al. Rapid removal of polyacrylamide from wastewater by plasma in the gas-liquid interface[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2019,83:1-7.
APA	Song, Wenzhe.,Zhang, Yu.,Yu, Jianwei.,Gao, Yingxin.,Naitoc, Teruki.,...&Yang, Min.(2019).Rapid removal of polyacrylamide from wastewater by plasma in the gas-liquid interface.JOURNAL OF ENVIRONMENTAL SCIENCES,83,1-7.
MLA	Song, Wenzhe,et al."Rapid removal of polyacrylamide from wastewater by plasma in the gas-liquid interface".JOURNAL OF ENVIRONMENTAL SCIENCES 83(2019):1-7.