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Comparative analysis on adsorption properties and mechanisms of nitrate and phosphate by modified corn stalks

文献类型：期刊论文

作者Wang, Lin1,3,4; Xu, Zhizhi1,3; Fu, Yongsheng4; Chen, Yangwu1,3; Pan, Zhicheng2; Wang, Rui4; Tan, Zhouliang1,3
刊名RSC ADVANCES
出版日期2018
卷号8期号:64页码:36468-36476
ISSN号2046-2069
DOI10.1039/c8ra06617e
产权排序2
文献子类Article
英文摘要In this study, modified corn stalks (MCS) were successfully synthesized by grafting or crosslinking triethylenetetramine (TETA) and triethylamine (TEA) in the presence of epichlorohydrin (EPI) and N,N-dimethylformamide (DMF) for the effective removal of nitrate and phosphate. The characteristics of adsorbents were determined and the adsorption properties and mechanisms of nitrate and phosphate on MCS were studied and compared. Results from Zeta potential, elemental analysis (EA), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) showed that quaternary ammonium group was successfully grafted onto corn stalks (CS). Both adsorption properties and mechanisms indicated that the MCS had a better affinity to phosphate. For adsorption properties, under conditions of a dosage of 4 g L-1, pH 6.0 and an initial concentration of 50 mg L-1, the phosphate removal rate was 10.97% higher than that nitrate, and SO42- and Cl- had a larger inhibitive effect on nitrate. Mechanisms analysis included adsorption kinetics, isotherm and thermodynamics. Results indicated that the parameters of different models were closely related to the adsorption effect of nitrate and phosphate. In addition, pseudo-second-order and Freundlich model fitted both nitrate and phosphate adsorption well. The thermodynamics analysis indicated that the adsorption process was spontaneous and endothermic in nature.
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WOS关键词AQUEOUS-SOLUTION ; REMOVAL ; ISOTHERM ; BIOSORBENT ; PRODUCTS ; KINETICS ; ANIONS ; STRAW ; WATER ; ACID
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000449704100008
出版者ROYAL SOC CHEMISTRY
源URL[http://210.75.237.14/handle/351003/30372]  
专题环境治理与食品安全领域_应用与环境微生物研究
成都生物研究所_应用与环境微生物研究
环境治理与食品安全领域_环境微生物四川省重点实验室
环境治理与食品安全领域_中国科学院环境与应用微生物重点实验室
作者单位1.Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041, Chengdu, P. R. China.;
2.Haitian Water Grp Co Ltd, Chengdu 610065, Sichuan, Peoples R China
3.Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041, Chengdu, P. R. China;
4.Southwest Jiaotong Univ, Fac Geosci & Environm Engn, Chengdu 611756, Sichuan, Peoples R China;
推荐引用方式
GB/T 7714		 Wang, Lin,Xu, Zhizhi,Fu, Yongsheng,et al. Comparative analysis on adsorption properties and mechanisms of nitrate and phosphate by modified corn stalks[J]. RSC ADVANCES,2018,8(64):36468-36476.
APA Wang, Lin.,Xu, Zhizhi.,Fu, Yongsheng.,Chen, Yangwu.,Pan, Zhicheng.,...&Tan, Zhouliang.(2018).Comparative analysis on adsorption properties and mechanisms of nitrate and phosphate by modified corn stalks.RSC ADVANCES,8(64),36468-36476.
MLA Wang, Lin,et al."Comparative analysis on adsorption properties and mechanisms of nitrate and phosphate by modified corn stalks".RSC ADVANCES 8.64(2018):36468-36476.

入库方式： OAI收割

来源：成都生物研究所

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