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豆渣/水滑石复合材料的制备及其吸附性能

Preparation and Adsorption Properties of Soybean Dreg/Hydrocalumite Composites.

作者信息

Tang Bei, Peng Guanping, Luo Deyi, Zhou Xi

机构信息

Department of Food and Chemical Engineering, Shaoyang University, Shaoyang, Hunan 422000, P. R. China.

Hunan Provincial Key Laboratory of Soybean Products Processing and Safety Control, Shaoyang, Hunan 422000, P. R. China.

出版信息

ACS Omega. 2021 Oct 5;6(41):27491-27500. doi: 10.1021/acsomega.1c04460. eCollection 2021 Oct 19.

DOI:10.1021/acsomega.1c04460
PMID:34693170
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8529653/
Abstract

The application of biomass-based composites in the field of adsorption has attracted extensive attention. Herein, soybean dreg/hydrocalumite composites were prepared by in situ self-assembly from soybean dregs and applied to the adsorption of Congo Red (CR). The composites were characterized by scanning electron microscopy, X-ray diffraction, Fourier infrared spectroscopy, and N physical adsorption-desorption. The results showed that the adsorption property of soybean dregs/hydrocalumite for CR was better than that of soybean dregs or hydrocalumite. Effects of preparation and adsorption conditions on the adsorption of CR by soybean dregs/hydrocalumite were also investigated. The removal rate of soybean dregs/hydrocalumite (30%BD-LDH) prepared under the optimized conditions reached 97.4% with a 486.8 mg·g adsorption capacity. Also, the adsorption capacity of 30%BD-LDH was about 2.4 times and 3.0 times that of hydrocalumite and soybean dregs, respectively. In addition, the adsorption process of CR by 30%BD-LDH was more in line with the pseudo-second-order kinetic and Langmuir isothermal models.

摘要

生物质基复合材料在吸附领域的应用已引起广泛关注。在此，通过大豆渣原位自组装制备了大豆渣/水滑石复合材料，并将其应用于刚果红（CR）的吸附。通过扫描电子显微镜、X射线衍射、傅里叶红外光谱和N2物理吸附-脱附对复合材料进行了表征。结果表明，大豆渣/水滑石对CR的吸附性能优于大豆渣或水滑石。还研究了制备和吸附条件对大豆渣/水滑石吸附CR的影响。在优化条件下制备的大豆渣/水滑石（30%BD-LDH）的去除率达到97.4%，吸附容量为486.8 mg·g-1。此外，30%BD-LDH的吸附容量分别约为水滑石和大豆渣的2.4倍和3.0倍。另外，30%BD-LDH对CR的吸附过程更符合准二级动力学和朗缪尔等温模型。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72af/8529653/95cad946cbcb/ao1c04460_0011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72af/8529653/7aa33aaa3e23/ao1c04460_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72af/8529653/84798918d17f/ao1c04460_0008.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72af/8529653/76becaa9565d/ao1c04460_0010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72af/8529653/95cad946cbcb/ao1c04460_0011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72af/8529653/ac08760cfbdd/ao1c04460_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72af/8529653/21850fddb239/ao1c04460_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72af/8529653/7eac17d62fe8/ao1c04460_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72af/8529653/5011fff3e085/ao1c04460_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72af/8529653/4751917ee4f8/ao1c04460_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72af/8529653/7aa33aaa3e23/ao1c04460_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72af/8529653/84798918d17f/ao1c04460_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72af/8529653/4022f40ec2d6/ao1c04460_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72af/8529653/76becaa9565d/ao1c04460_0010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72af/8529653/95cad946cbcb/ao1c04460_0011.jpg

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