With the rapid development of industrialization, the pollution of nickel-containing wastewater produced by non-ferrous metal smelting is becoming more and more serious. In order to meet the urgent requirements for the discharge of nickel-containing wastewater, effective and economic treatment technologies and materials are pursued. The experiment used natural kaolin as the main raw material was calcined at 500°C and combined with natural zeolite. Through orthogonal test, the calcined kaolin and natural zeolite 2: 1, N-2-aminoethyl-3-aminopropyl trimethoxy silane coupling agent (KH792) was used to modify the composite sample to obtain the modified composite kaolin adsorbent. XRD, SEM, BET and FT-IR were used for characterization before and after modification. It was found that the amino functional groups in KH792 were successfully grafted onto the surface of the composite kaolin. After modification, the specific surface area of composite kaolin increases from 9.522m2/g to 13.517m2/g, and the pore size expands from 10.022nm to 15.143nm. The adsorption performance of Ni2+ and its influencing factors were studied by using modified composite kaolin. Through the study, it was determined that the concentration of Ni2+ of 30 ml test water was 80 mg·L-1, and the modified kaolin was added 0.2g and adsorbed for 240 min at 25°C and pH 5.45. The removal rate increased from 54.9% to 99.94%. The adsorption process follows the quasi-second-order kinetic model, and the adsorption isotherm corresponds to the Langmuir model.
| Published in | Science Research (Volume 9, Issue 6) |
| DOI | 10.11648/j.sr.20210906.14 |
| Page(s) | 120-126 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2021. Published by Science Publishing Group |
Kaolin, Adsorption, Heavy Metals, Diamino Modification
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APA Style
Chen Dong, Zhang Fenge. (2021). Study on the Adsorption Performance of Amino-grafted Composite Kaolin for Nickel-containing Wastewater. Science Research, 9(6), 120-126. https://doi.org/10.11648/j.sr.20210906.14
ACS Style
Chen Dong; Zhang Fenge. Study on the Adsorption Performance of Amino-grafted Composite Kaolin for Nickel-containing Wastewater. Sci. Res. 2021, 9(6), 120-126. doi: 10.11648/j.sr.20210906.14
AMA Style
Chen Dong, Zhang Fenge. Study on the Adsorption Performance of Amino-grafted Composite Kaolin for Nickel-containing Wastewater. Sci Res. 2021;9(6):120-126. doi: 10.11648/j.sr.20210906.14
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Download@article{10.11648/j.sr.20210906.14,
author = {Chen Dong and Zhang Fenge},
title = {Study on the Adsorption Performance of Amino-grafted Composite Kaolin for Nickel-containing Wastewater},
journal = {Science Research},
volume = {9},
number = {6},
pages = {120-126},
doi = {10.11648/j.sr.20210906.14},
url = {https://doi.org/10.11648/j.sr.20210906.14},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sr.20210906.14},
abstract = {With the rapid development of industrialization, the pollution of nickel-containing wastewater produced by non-ferrous metal smelting is becoming more and more serious. In order to meet the urgent requirements for the discharge of nickel-containing wastewater, effective and economic treatment technologies and materials are pursued. The experiment used natural kaolin as the main raw material was calcined at 500°C and combined with natural zeolite. Through orthogonal test, the calcined kaolin and natural zeolite 2: 1, N-2-aminoethyl-3-aminopropyl trimethoxy silane coupling agent (KH792) was used to modify the composite sample to obtain the modified composite kaolin adsorbent. XRD, SEM, BET and FT-IR were used for characterization before and after modification. It was found that the amino functional groups in KH792 were successfully grafted onto the surface of the composite kaolin. After modification, the specific surface area of composite kaolin increases from 9.522m2/g to 13.517m2/g, and the pore size expands from 10.022nm to 15.143nm. The adsorption performance of Ni2+ and its influencing factors were studied by using modified composite kaolin. Through the study, it was determined that the concentration of Ni2+ of 30 ml test water was 80 mg·L-1, and the modified kaolin was added 0.2g and adsorbed for 240 min at 25°C and pH 5.45. The removal rate increased from 54.9% to 99.94%. The adsorption process follows the quasi-second-order kinetic model, and the adsorption isotherm corresponds to the Langmuir model.},
year = {2021}
}
TY - JOUR T1 - Study on the Adsorption Performance of Amino-grafted Composite Kaolin for Nickel-containing Wastewater AU - Chen Dong AU - Zhang Fenge Y1 - 2021/11/24 PY - 2021 N1 - https://doi.org/10.11648/j.sr.20210906.14 DO - 10.11648/j.sr.20210906.14 T2 - Science Research JF - Science Research JO - Science Research SP - 120 EP - 126 PB - Science Publishing Group SN - 2329-0927 UR - https://doi.org/10.11648/j.sr.20210906.14 AB - With the rapid development of industrialization, the pollution of nickel-containing wastewater produced by non-ferrous metal smelting is becoming more and more serious. In order to meet the urgent requirements for the discharge of nickel-containing wastewater, effective and economic treatment technologies and materials are pursued. The experiment used natural kaolin as the main raw material was calcined at 500°C and combined with natural zeolite. Through orthogonal test, the calcined kaolin and natural zeolite 2: 1, N-2-aminoethyl-3-aminopropyl trimethoxy silane coupling agent (KH792) was used to modify the composite sample to obtain the modified composite kaolin adsorbent. XRD, SEM, BET and FT-IR were used for characterization before and after modification. It was found that the amino functional groups in KH792 were successfully grafted onto the surface of the composite kaolin. After modification, the specific surface area of composite kaolin increases from 9.522m2/g to 13.517m2/g, and the pore size expands from 10.022nm to 15.143nm. The adsorption performance of Ni2+ and its influencing factors were studied by using modified composite kaolin. Through the study, it was determined that the concentration of Ni2+ of 30 ml test water was 80 mg·L-1, and the modified kaolin was added 0.2g and adsorbed for 240 min at 25°C and pH 5.45. The removal rate increased from 54.9% to 99.94%. The adsorption process follows the quasi-second-order kinetic model, and the adsorption isotherm corresponds to the Langmuir model. VL - 9 IS - 6 ER -
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