ADSORPTION OF ANIONIC DYES BY STARCH NANOCRYSTALS GRAFTED POLYETHYLENEIMINE

CHEN Qijie; LIANG Chunyan; ZHAO Yalan; YOU Na; XIE Guangyang; WEI Yaqin; ZHENG Xiaoling

doi:10.13205/j.hjgc.202303008

Volume 41 Issue 3

Mar. 2023

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2023 > 41(3): 57-64

CHEN Qijie, LIANG Chunyan, ZHAO Yalan, YOU Na, XIE Guangyang, WEI Yaqin, ZHENG Xiaoling. ADSORPTION OF ANIONIC DYES BY STARCH NANOCRYSTALS GRAFTED POLYETHYLENEIMINE[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(3): 57-64. doi: 10.13205/j.hjgc.202303008

Citation:

CHEN Qijie, LIANG Chunyan, ZHAO Yalan, YOU Na, XIE Guangyang, WEI Yaqin, ZHENG Xiaoling. ADSORPTION OF ANIONIC DYES BY STARCH NANOCRYSTALS GRAFTED POLYETHYLENEIMINE[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(3): 57-64. doi: 10.13205/j.hjgc.202303008

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ADSORPTION OF ANIONIC DYES BY STARCH NANOCRYSTALS GRAFTED POLYETHYLENEIMINE

doi: 10.13205/j.hjgc.202303008

1. School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410076, China;
2. Hunan Guangxin Technology Co., Ltd, Shaoyang 422900, China

Received Date: 2022-04-25
Available Online: 2023-05-26
Publish Date: 2023-03-01

Abstract

Abstract

Adsorption has become a common method in wastewater treatment because of its unique advantages. In this study, with glutaraldehyde as a cross-linking agent and starch nanocrystals (SNCs) as the substrate, grafting polyethyleneimine (PEI), a novel biosorbent (SNCs-PEI) was successfully prepared. SNCs-PEI was characterized by particle size, zeta potential, Fourier transform infrared spectroscopy (FTIR), and energy dispersive X-ray spectroscopy (EDX). When the value of pH was 3, the Zeta potential of SNCs-PEI was positive 37.9 mV, and it had good adsorption performance on anionic dyes methyl orange (MO) and Congo red (CR). The effects of adsorption time, pH, initial dye concentration and temperature on the absorption capacity of SNCs-PEI were investigated. Under the conditions of pH 3, SNCs-PEI dosage of 0.1 g and initial MO, CR concentration of 130 mg/L, the maximum adsorption capacity of Mo and CR by SNCs-PEI were 82.10, 57.34 mg/g, respectively, according to the fitting of Langmuir isothermal model. The research showed that the adsorption process of MO and CR by SNCs-PEI conformed to the pseudo-second-order kinetics and the Langmuir adsorption model, which was a spontaneous and endothermic process. The study of the new biological adsorbent provides a new way for the removal of industrial wastewater containing anionic dyes.
- starch nanocrystals,
- polyethyleneimine,
- methyl orange,
- Congo red,
- adsorption

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References(21)

References

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