[1]陈礼洪、郭娜妹、颜丽红、武江南、刘欣汝.MgAl-LDHs及其葡萄糖改性材料的磷吸附性能对比[J].福建工程学院学报,2020,18(04):393-398.[doi:10.3969/j.issn.1672-4348.2020.04.016]
 CHEN Lihong,GUO Namei,YAN Lihong,et al.Comparison of the phosphorus-adsorption properties of MgAI-LDHs〖JZ〗 and its glucosemodified materials[J].Journal of FuJian University of Technology,2020,18(04):393-398.[doi:10.3969/j.issn.1672-4348.2020.04.016]
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MgAl-LDHs及其葡萄糖改性材料的磷吸附性能对比()
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《福建工程学院学报》[ISSN:2097-3853/CN:35-1351/Z]

卷:
第18卷
期数:
2020年04期
页码:
393-398
栏目:
出版日期:
2020-08-25

文章信息/Info

Title:
Comparison of the phosphorus-adsorption properties of MgAI-LDHs〖JZ〗 and its glucosemodified materials
作者:
陈礼洪、郭娜妹、颜丽红、武江南、刘欣汝
福建工程学院生态环境与城市建设学院
Author(s):
CHEN Lihong GUO Namei YAN Lihong WU Jiangnan LIU Xinru
School of Ecological Environment and Urban Construction, Fujian University of Technology
关键词:
层状双氢氧化物(LDH)葡萄糖磷酸盐吸附
Keywords:
layered double hydroxide (LDH) glucose phosphate adsorption
分类号:
X52
DOI:
10.3969/j.issn.1672-4348.2020.04.016
文献标志码:
A
摘要:
采用均匀共沉淀法合成镁铝层状双氢氧化物,并加入葡萄糖得到改性材料MgAl-C-LDHs,以XRD、FTIR、N2吸脱附表征材料,通过静态吸附实验测试其对磷酸盐的吸附容量,结合吸附等温线模型和吸附动力学模型解析吸附过程。实验表明:改性后的MgAl-C-LDHs比MgAl-LDHs的比表面积提高16%,对磷的吸附容量提高19%。朗缪尔模型能更好描述MgAl-LDHs对磷酸盐的吸附行为,MgAl-LDHs表面相对均匀,吸附以单层吸附为主?弗兰德里希模型能更好描述MgAl-C-LDHs对磷酸盐的吸附行为,MgAl-C-LDHs对磷酸盐以多层吸附为主。MgAl-LDHs和MgAl-C-LDHs对磷酸盐的吸附与伪二级动力学吸附模型更吻合,吸附过程均主要受化学吸附控制。
Abstract:
MgAl layered double hydroxides (MgAl-LDHs) were synthesized by a homogeneous co-precipitation method and MgAl-C-LDHs, the modifies materials, were obtained by adding some glucose during the synthesis process. The materials were characterized by XRD, FTIR, and N2 adsorption and desorption measurements. The phosphate adsorption performance of the materials were tested by static adsorption experiments. The isotherm model and the kinetic model were used to analyze the adsorption process. Results show that the specific surface area of the modified MgAl|C-LDHs increased by 16% and the corresponding phosphorus-adsorption capacity increased by 19% compared with those of MgAl-LDHs. The Langmuir model is more suitable to describe the adsorption of phosphate by MgAl-LDHs, the reason being that the surface of MgAl-LDHs is relatively uniform, and the adsorption process is mainly associated with single-layer adsorption. The Freundlich model can better describe the adsorption of phosphate by MgAl-C-LDHs, because the adsorption behaviour occurs through multi-layer adsorption. The adsorption of phosphate by both MgAl-LDHs and MgAl-C-LDHs is more consistent with the pseudo-second-order kinetic adsorption model, and the adsorption process is mainly controlled by chemical adsorption.

参考文献/References:

[1] BAKEN S, VREBEECK M, VERHEYEN D, et al. Phosphorus losses from agricultural land to natural waters are reduced by immobilization in iron-rich sediments of drainage ditches[J]. Water Research, 2015, 71: 160-170.[2] RITTMANNV B, MAYER B, WESTERHOFF P, et al. Capturing the lost phosphorus[J]. Chemosphere, 2011, 84(6): 846-853.[3] TRK T, BOYRAZ T, ALP I. Arsenic removal from groundwater in Kütahya, Turkey, by novel calcined modified hydrotalcite[J]. Environmental Geochemistry and Health: Official Journal of the Society for Environmental Geochemistry and Health, 2020, 42 (5): 1335-1345.[4] GAO C, ZHANG X, YUAN Y, et al. Removal of hexavalent chromium ions by core-shell sand/Mg-layer double hydroxides (LDHs) in constructed rapid infiltration system[J]. Ecotoxicology and Environmental Safety, 2018, 166: 285-293.[5] YANG Z, ZHANG L, XU P, et al. The adsorption of nitrate from aqueous solution onto calcined Mg/Fe hydrotalcite[J]. Desalination and Water Treatment, 2015, 54(12): 3400-3411.[6] LI D, YAN W, GUO X, et al. Removal of selenium from caustic solution by adsorption with CaAl layered double hydroxides[J]. Hydrometallurgy, 2020, 191: 105231.[7] SUN X, IMAI T, SEKINE M, et al. Adsorption of Phosphate by calcinated Mg-Fe layered double hydroxide[J]. Journal of Water and Environment Technology, 2013, 11(2): 111-120.[8] KOILRAJ P, KANNAN S. Phosphate uptake behavior of ZnAlZr ternary layered double hydroxides through surface precipitation[J]. Journal of Colloid and Interface Science, 2009, 341(2): 289-297.[9] LUENGO C, VOLPE M, AVENA M. High sorption of phosphate on Mg-Al layered double hydroxides: Kinetics and equilibrium[J]. Journal of Environmental Chemical Engineering, 2017, 5(5): 4656-4662.[10] YAN H, CHEN Q, LIU J, et al. Phosphorus recovery through adsorption by layered double hydroxide nano-composites and transfer into a struvite-like fertilizer[J]. Water Research, 2018, 145: 721-730.[11] YANG K, YAN L, YANG Y, et al. Adsorptive removal of phosphate by Mg-Al and Zn-Al layered double hydroxides: Kinetics, isotherms and mechanisms[J]. Separation & Purification Technology, 2014, 124: 36-42.[12] YOU Y, VANCE G, ZHAO H. Selenium adsorption on Mg-Al and Zn-Al layered double hydroxides[J]. Applied Clay Science, 2001, 20(1): 13-25.[13] 刘晨, 张美一, 潘纲. 超薄水滑石纳米片除磷效果与机理[J]. 环境工程学报, 2018, 12(9):2446-2456.[14] YANG F, ZHANG S, SUN Y, et al. Assembling biochar with various layered double hydroxides for enhancement of phosphorus recovery[J]. Journal of Hazardous Materials, 2019, 365(MAR.5): 665-673.[15] 颜丽红. 新型层状双金属氢氧化物吸附剂的制备及其电催化氧化潜能研究[D]. 福州: 福建工程学院, 2019.[16] XIANG X, HIMA H, WANG H, et al. Facile synthesis and catalytic properties of nickel-based mixed-metal oxides with mesopore networks from a novel hybrid composite precursor[J]. Chemistry of Materials, 2008, 20(3): 1173-1182.[17] CHIMENTO R, ABELL S, MEDINA F, et al. Defect-induced strategies for the creation of highly active hydrotalcites in base-catalyzed reactions[J]. Journal of Catalysis, 2007, 252(2): 249-257.[18] 刘秀芳, 范彬彬, 高升成, 等. C/MgAl水滑石复合材料为前驱物所制催化剂在柠檬醛-丙酮缩合反应中的催化性能[J]. 无机化学学报, 2013, 29(2): 345-349.[19] GAO J, LU Y, FANG L, et al. Efficient removal of methyl orange and heavy metal ion from aqueous solution by NiFe-Cl-layered double hydroxide[J]. Environ Eng Sci, 2018, 35(4): 373-381.[20] HU Y, DAVIES P. Synthesis, structure and reactions of oxides with the hexagonal MoO3 structure[J]. Materials Science Forum, 1994, 152-153: 277-280.[21] OHLINGER K, YOUNG T, SCHROEDER E D. Predicting struvite formation in digestion[J]. Water Research, 1998, 32(12): 3607-3614.[22] LONG F, GONG J, ZENG G, et al. Removal of phosphate from aqueous solution by magnetic Fe-Zr binary oxide[J]. Chemical Engineering Journal, 2011, 171(2): 448-455.

更新日期/Last Update: 2020-08-25