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Zhong QQ, Wang ZH, Xu JJ, Sun QW. Melanoseriskangdingensis (Lactucinae, Cichorieae, Asteraceae), a new species reported from western Sichuan, China. PhytoKeys 2023; 236:29-37. [PMID: 38046939 PMCID: PMC10692989 DOI: 10.3897/phytokeys.236.113401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 11/11/2023] [Indexed: 12/05/2023]
Abstract
Melanoseriskangdingensis, a new species native to western Sichuan, China, is firstly described and illustrated, and its conservation status is also assessed. It bears resemblance to M.macrantha and M.bracteata in terms of morphology; however, there are distinguishing characteristics in terms of their leaf structure, presence of bracts, hairiness of involucre, number of florets, and length of both stamen tube and achene's beak.
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Affiliation(s)
- Qian-Qian Zhong
- Department of Traditional Chinese Medicine Resources and Development, College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, Guizhou, ChinaGuizhou University of Traditional Chinese MedicineGuiyangChina
| | - Ze-Huan Wang
- Department of Traditional Chinese Medicine Resources and Development, College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, Guizhou, ChinaGuizhou University of Traditional Chinese MedicineGuiyangChina
| | - Jia-Ju Xu
- Department of Traditional Chinese Medicine Resources and Development, College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, Guizhou, ChinaGuizhou University of Traditional Chinese MedicineGuiyangChina
| | - Qin-Wen Sun
- Department of Traditional Chinese Medicine Resources and Development, College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, Guizhou, ChinaGuizhou University of Traditional Chinese MedicineGuiyangChina
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Zheng LL, Zheng LY, Chen C, Wang YT, Chen SF, Zhong QQ, Zhang Y, Li X. High-risk human papillomavirus distribution in different cytological classification women. Microbes Infect 2023; 25:105214. [PMID: 37666475 DOI: 10.1016/j.micinf.2023.105214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/26/2023] [Accepted: 08/28/2023] [Indexed: 09/06/2023]
Abstract
High-risk human papillomavirus (HR-HPV) infection is a major cause of infection-related cancer worldwide. 3101 HR-HPV-positive females were retrospectively analyzed and grouped using the cervical cytological screening (ThinPrep cytological test, TCT) evaluations combined with colposcopy. The HPV16 infection rate is the highest in all groups. HPV16 was the most frequent in each group, with significant differences between the four groups (χ2 = 23.41, P = 0.0001). The distribution of HPV16 and HPV33 correlated with the pathologic stage in each group. The mixed infection rate of mRNA testing differs significantly between groups (P < 0.01, χ2 = 17.44, P = 0.002). HR-HPV infection duration of less than six months accounted for 87.65%, 6 and 12 months of persistent infection (28.28%), and more than one year of continuous infection accounted for only 16.48%. The top three HPV types in a group with a duration of more than 12 months were HPV52 (3.03%), HPV16 (2.55%), and HPV39 (1.58%). The least clearance types were HPV39 (63.48%), 56 (69.54%), and 52 (71.44%) more than 12 months. This study revealed the region's primary pathogenic subtypes on different cervical lesions and provided the basis for diagnosing and treating HPV infection.
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Affiliation(s)
- Li-Li Zheng
- Central Laboratory of Liaocheng People's Hospital, Liaocheng, 252000, Shandong, China.
| | - Li-Yuan Zheng
- School of Rehabilitation Sciences and Engineering, University of Health and Rehabilitation Sciences, Qingdao, 266071, China
| | - Chao Chen
- Central Laboratory of Liaocheng People's Hospital, Liaocheng, 252000, Shandong, China
| | - Yi-Ting Wang
- Central Laboratory of Liaocheng People's Hospital, Liaocheng, 252000, Shandong, China
| | - Shuang-Feng Chen
- Central Laboratory of Liaocheng People's Hospital, Liaocheng, 252000, Shandong, China
| | - Qian-Qian Zhong
- Department of Clinical Laboratory, Liaocheng City Dongchangfu District Maternal and Child Health Hospital, Liaocheng, 252000, Shandong, China
| | - Yan Zhang
- Department of Gynecology, Liaocheng People's Hospital, Liaocheng, 252000, Shandong, China.
| | - Xue Li
- Department of Gynecology, Liaocheng People's Hospital, Liaocheng, 252000, Shandong, China.
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Ma YY, Fu HQ, Liu XL, Sun YM, Zhong QQ, Xu WJ, Lei XW, Liu GD, Yue CY. Zero-Dimensional Organic–Inorganic Hybrid Indium Chlorides with Intrinsic Blue Light Emissions. Inorg Chem 2022. [DOI: 10.1021/acs.inorgchem.2c00518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yue-Yu Ma
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, People’s Republic of China
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, People’s Republic of China
| | - Han-Qi Fu
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, People’s Republic of China
| | - Xue-Lei Liu
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, People’s Republic of China
| | - Yu-Ming Sun
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, People’s Republic of China
| | - Qian-Qian Zhong
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, People’s Republic of China
| | - Wen-Jie Xu
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, People’s Republic of China
| | - Xiao-Wu Lei
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, People’s Republic of China
| | - Guo-Dong Liu
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, People’s Republic of China
| | - Cheng-Yang Yue
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, People’s Republic of China
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Sun C, Zhong QQ, Zhang X, Xiao PC, Cheng Y, Gao YJ, Liu GD, Lei XW. A Zero-Dimensional Hybrid Cadmium Perovskite with Highly Efficient Orange-Red Light Emission. Inorg Chem 2021; 60:18879-18888. [PMID: 34872252 DOI: 10.1021/acs.inorgchem.1c02661] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Low-dimensional organic-inorganic hybrid metal halide materials have been extensively studied due to their excellent optoelectronic performances. Herein, by using the facile wet-chemistry method, we designed one new hybrid cadmium bromide of (H3AEP)2CdBr6·2Br based on discrete octahedral [CdBr6]4- units. Remarkably, the bulk crystal of (H3AEP)2CdBr6·2Br exhibits strong broadband orange-red light emission from the radiative recombination of self-trapped excitons (STEs) with a high photoluminescence quantum yield (PLQY) of 9%. Benefiting from the highly efficient luminescent performance, this 0D cadmium perovskite can be utilized as an excellent down-conversion red phosphor to assemble a white light-emitting diode, and a high color rendering index (CRI) of 93 is realized. As far as we know, this is the first orange-red light-emitting hybrid cadmium perovskite which promotes the full-color display in this system.
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Affiliation(s)
- Chen Sun
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, P. R. China.,Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Rd., Shanghai 200092, P. R. China
| | - Qian-Qian Zhong
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Xin Zhang
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Pan-Chao Xiao
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Yu Cheng
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Yu-Jia Gao
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Guo-Dong Liu
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Xiao-Wu Lei
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, P. R. China
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Sun C, Zang JP, Liu YQ, Zhong QQ, Xing XX, Li JP, Yue CY, Lei XW. Lead-Free Hybrid Indium Perovskites with Highly Efficient and Stable Green Light Emissions. CCS Chem 2021. [DOI: 10.31635/ccschem.021.202101092] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Chen Sun
- School of Chemistry, Chemical Engineer and Materials, Jining University, Qufu, Shandong, 273155
| | - Jin-Peng Zang
- School of Chemistry, Chemical Engineer and Materials, Jining University, Qufu, Shandong, 273155
| | - Yu-Qing Liu
- School of Chemistry, Chemical Engineer and Materials, Jining University, Qufu, Shandong, 273155
| | - Qian-Qian Zhong
- School of Chemistry, Chemical Engineer and Materials, Jining University, Qufu, Shandong, 273155
| | - Xin-Xin Xing
- School of Chemistry, Chemical Engineer and Materials, Jining University, Qufu, Shandong, 273155
| | - Jia-Peng Li
- School of Chemistry, Chemical Engineer and Materials, Jining University, Qufu, Shandong, 273155
| | - Cheng-Yang Yue
- School of Chemistry, Chemical Engineer and Materials, Jining University, Qufu, Shandong, 273155
| | - Xiao-Wu Lei
- School of Chemistry, Chemical Engineer and Materials, Jining University, Qufu, Shandong, 273155
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Zhong QQ, Shen L, Zhao YQ, Hao YC, Meng LC, Liu YJ, Xu X, Shang YN, Gao BY, Yue QY. Preferential capture of phosphate by an Enteromorpha prolifera-based biopolymer encapsulating hydrous zirconium oxide nanoparticles. Environ Sci Pollut Res Int 2021; 28:34584-34597. [PMID: 33651293 DOI: 10.1007/s11356-021-12681-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 01/22/2021] [Indexed: 06/12/2023]
Abstract
Preferential removal of phosphate from aqueous was conducted by a novel biomass-based nanocomposite (EP-N+-Zr) with encapsulated hydrous zirconium oxide, and the biopolymer EP-N+-Zr features were described. EP-N+-Zr exhibited high selective sequestration toward phosphate when humic acid or other competing anions (Cl-, SO42-, NO3-, ClO4-) coexisted at relatively high levels. Such excellent performance of EP-N+-Zr was attributed to its specific two site structures; the embedded HZO nanoparticles and quaternary ammonia groups [N+(CH2CH3)3Cl-] bonded inside the biomass-Enteromorpha prolifera, which facilitated preferable capture towards phosphate through specific affinity and nonspecific preconcentration of phosphate ions on the basis of the ion exchange, respectively. The maximum adsorption capacity of phosphate (20 °C) as calculated by Langmuir model was 88.5 mg(P)/g. Regeneration tests showed that EP-N+-Zr could be recycled at least five times without noticeable capacity losses using binary NaOH-NaCl as eluent.
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Affiliation(s)
- Qian-Qian Zhong
- Provincial Experimental Teaching Demonstration Center of Environmental Engineering, Department of Environmental and chemical Engineering, Tangshan University, Tangshan, People's Republic of China.
| | - Li Shen
- Provincial Experimental Teaching Demonstration Center of Environmental Engineering, Department of Environmental and chemical Engineering, Tangshan University, Tangshan, People's Republic of China
| | - Ya-Qin Zhao
- Research Center of Mine Ecological Restoration Engineering, School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, People's Republic of China
| | - Yu-Cui Hao
- Provincial Experimental Teaching Demonstration Center of Environmental Engineering, Department of Environmental and chemical Engineering, Tangshan University, Tangshan, People's Republic of China
| | - Li-Cong Meng
- Provincial Experimental Teaching Demonstration Center of Environmental Engineering, Department of Environmental and chemical Engineering, Tangshan University, Tangshan, People's Republic of China
| | - Yan-Juan Liu
- Provincial Experimental Teaching Demonstration Center of Environmental Engineering, Department of Environmental and chemical Engineering, Tangshan University, Tangshan, People's Republic of China
| | - Xing Xu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, People's Republic of China
| | - Ya-Nan Shang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, People's Republic of China
| | - Bao-Yu Gao
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, People's Republic of China
| | - Qin-Yan Yue
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, People's Republic of China.
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Zhong QQ, Yue QY, Li Q, Gao BY, Xu X. Removal of Cu(II) and Cr(VI) from wastewater by an amphoteric sorbent based on cellulose-rich biomass. Carbohydr Polym 2014; 111:788-96. [DOI: 10.1016/j.carbpol.2014.05.043] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2013] [Revised: 05/13/2014] [Accepted: 05/14/2014] [Indexed: 11/27/2022]
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Cheng X, Qin L, Zhong QQ, Huang SF, Li ZJ. Temperature and boundary influence on cement hydration monitoring using embedded piezoelectric transducers. Ultrasonics 2013; 53:412-416. [PMID: 22892316 DOI: 10.1016/j.ultras.2012.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2011] [Revised: 07/04/2012] [Accepted: 07/05/2012] [Indexed: 06/01/2023]
Abstract
In this study, the hydration process was monitored using embedded ultrasonic transducers. It was found that the ultrasonic amplitude decreased and fluctuated at the very early age, several hours after the beginning of fast hydration. The embedded transducers are very different from the surface coupled ones for they were directly influenced by the cement paste, such as the varying temperature and the boundary condition. Experiments were carried out to find out which factor result in such decrease and fluctuation. Test results showed that both the temperature and boundary conditions affect the ultrasonic measurement. When the hydration progressed under constant temperature, the amplitude of the ultrasonic wave decreased smoothly during certain period. When the hardened specimen was tested, it was found that the amplitude would decrease obviously with the increasing of temperature and vice versa. The findings could be used to interpret the amplitude plot obtained in the normal hydration monitoring using embedded transducers.
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Affiliation(s)
- X Cheng
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, China
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Xu X, Gao BY, Tang X, Yue QY, Zhong QQ, Li Q. Characteristics of cellulosic amine-crosslinked copolymer and its sorption properties for Cr(VI) from aqueous solutions. J Hazard Mater 2011; 189:420-426. [PMID: 21397396 DOI: 10.1016/j.jhazmat.2011.02.056] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2010] [Revised: 02/14/2011] [Accepted: 02/16/2011] [Indexed: 05/30/2023]
Abstract
A new cellulosic amine-crosslinked copolymer was prepared after the amination reaction with cotton stalk peel (CSP). The physicochemical characteristics of amine-crosslinked cotton stalk peel (AC-CSP) and raw CSP were determined after the surface analysis (including specific surface area, micropore volume and SEM), zeta potential analysis and spectrum analysis (FTIR and Raman spectrum). The sorption properties of AC-CSP for Cr(VI) were evaluated in the static, column sorption and desorption tests. The surface characteristics indicated the absence of porous adsorption in the potential Cr(VI) sorption mechanism. Zeta potential and spectrum analysis of AC-CSP illustrated the involvement of amine groups in the Cr(VI) sorption process. The sorption capacity of AC-CSP for Cr(VI) was 129.0mg/g as comparison with 14.8 mg/g of raw CSP. Flow rate and influent Cr(VI) concentration were demonstrated as two influencial factors in the column sorption tests. NaCl was used as the eluent, and the desorption efficiencies during three successive cycles were 75.9%, 69.8% and 64.3%, respectively. In addition, the results of the static, column sorption and desorption tests illustrated the complicated interactions between Cr(VI) and AC-CSP including complexation and ion exchange mechanisms.
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Affiliation(s)
- Xing Xu
- Key Laboratory of Water Pollution Control and Recycling Shandong, School of Environmental Science and Engineering, Shandong University, Jinan 250100, PR China
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Xu X, Gao BY, Tan X, Yue QY, Zhong QQ, Li Q. Characteristics of amine-crosslinked wheat straw and its adsorption mechanisms for phosphate and chromium (VI) removal from aqueous solution. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2010.12.069] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Xing X, Gao BY, Zhong QQ, Yue QY, Li Q. Sorption of nitrate onto amine-crosslinked wheat straw: characteristics, column sorption and desorption properties. J Hazard Mater 2011; 186:206-211. [PMID: 21112141 DOI: 10.1016/j.jhazmat.2010.10.104] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2010] [Revised: 10/26/2010] [Accepted: 10/27/2010] [Indexed: 05/30/2023]
Abstract
The nitrate removal process was evaluated using a fixed-bed column packed with amine-crosslinked wheat straw (AC-WS). Column sorption and desorption characteristics of nitrate were studied extensively. Solid-state (13)C NMR and zeta potential analysis validated the existence of crosslinked amine groups in AC-WS. Raman shift of the nitrate peaks suggested the electrostatic attraction between the adsorbed ions and positively charged amine sites. The column sorption capacity (q(ed)) of the AC-WS for nitrate was 87.27 mg g(-1) in comparison with the raw WS of 0.57 mg g(-1). Nitrate sorption in column was affected by bed height, influent nitrate concentration, flow rate and pH, and of all these, influent pH demonstrated an essential effect on the performance of the column. In addition, desorption and dynamic elution tests were repeated for several cycles, with high desorption rate and slight losses in its initial column sorption capacity.
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Affiliation(s)
- Xu Xing
- Key Laboratory of Water Pollution Control and Recycling (Shandong), School of Environmental Science and Engineering, Shandong University, Jinan, PR China
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Xu X, Gao BY, Yue QY, Zhong QQ, Zhan X. Preparation, characterization of wheat residue based anion exchangers and its utilization for the phosphate removal from aqueous solution. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2010.06.053] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Xu X, Gao BY, Yue QY, Zhong QQ. Preparation of agricultural by-product based anion exchanger and its utilization for nitrate and phosphate removal. Bioresour Technol 2010; 101:8558-8564. [PMID: 20599377 DOI: 10.1016/j.biortech.2010.06.060] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2009] [Revised: 05/27/2010] [Accepted: 06/09/2010] [Indexed: 05/29/2023]
Abstract
To develop the agricultural by-product adsorbent that possesses anionic exchangeable function, the performance of a new anion exchanger prepared from wheat straw (WS) was evaluated in this study. Wheat straw anion exchanger (WS-AE) was prepared by the grafting of aminated intermediate onto WS. Results indicate that reaction time and temperature in the chemical modification process both affected the preparation of aminated intermediate and WS-AE. FTIR, nitrogen content, solid-state (13)C NMR and zeta potential data validated the existence of grafted amine group in the structure of WS-AE. The maximum sorption capacities of WS-AE for nitrate and phosphate were approximately 52.8 and 45.7mgg(-1), respectively, which shows higher maximum capacity for phosphate and a similar capacity for nitrate in comparison with commercial anion resins. Regeneration studies and column adsorption tests were performed, and the excellent regeneration and column adsorption capacities provided strong evidence of the potential of WS-AE for the technological applications of phosphate and nitrate removal from aqueous solutions.
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Affiliation(s)
- Xing Xu
- Key Laboratory of Water Pollution Control and Recycling (Shandong), School of Environmental Science and Engineering, Shandong University, Jinan, PR China
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Xu X, Gao BY, Yue QY, Zhong QQ. Preparation and utilization of wheat straw bearing amine groups for the sorption of acid and reactive dyes from aqueous solutions. J Hazard Mater 2010; 182:1-9. [PMID: 20409637 DOI: 10.1016/j.jhazmat.2010.03.071] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2009] [Revised: 03/14/2010] [Accepted: 03/15/2010] [Indexed: 05/29/2023]
Abstract
Removal of Acid Red 73 (AR 73) and Reactive Red 24 (RR 24) onto modified wheat straw (MWS) from aqueous solutions was investigated. Sorption experiments were carried out as function of MWS dosage, contact time, initial concentration, pH and temperature. Characterizations of MWS were measured and a mass of amine groups were observed in the framework of MWS. The equilibrium sorption data were well represented by the Langmuir isotherm equation, and the calculated thermodynamic parameters indicated a spontaneous and endothermic nature for sorption process. It was shown that pseudo-second-order kinetic equation could best describe the adsorption kinetics. More over, the high maximum sorption capacity (q(e max), 714.3 mg g(-1) for AR 73 and 285.7 mg g(-1) for RR 24) and low cost (1.24 US$ kg(-1)) of MWS provided strong evidence of the potential of MWS for the technological applications of anionic dyes removal from aqueous solutions.
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Affiliation(s)
- Xing Xu
- School of Environmental Science and Engineering, Shandong University, Jinan 250100, PR China
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