Synthesis of biopolymer chitosan-based hydrogels with and without a crosslinker for the removal of industrial dye procion blue HERD: a comparative study

IF 0.9 Q4 ENGINEERING, CHEMICAL
N. Bhullar, M. Garg, K. Kumari, D. Sud
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引用次数: 1

Abstract

ABSTRACT The current study reports the preparation and application of bio-based polymer composite hydrogel with and without a crosslinker for the removal of industrial dye procion blue HERD (PB). Biopolymer chitosan, acrylic acid as a monomer and potassium persulphate (K2S2O8) as an initiator synthesise composite hydrogel. The crosslinked composite hydrogel is synthesised by the microwave irradiation technique using thiourea (CH4N2S) as a crosslinker. Chitosan-based hydrogel synthesised without crosslinker (CH) and with crosslinker thiourea (CH-T) is analysed using techniques, such as Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), differential thermal analysis (DTG) and derivative thermogravimetric analysis (DTA). The adsorption capacity of CH and CH-T for the removal of PB from an aqueous solution is investigated. The removal efficiency of hydrogel is 90% in a solution of pH 7 for a constant dose of PB (5 mg L−1). The experimental data attained for the adsorption of industrial dye (PB) onto CH and CH-T showed a perfect fit for Freundlich and Langmuir isotherms. The perfect fit of experimental data for PB decolorisation is observed for pseudo-second-order kinetic equation with k values 10.17 × 10−3 mg−1 min−1 and 6.719 × 10−3 mg−1 min−1 with CH and CH-T, respectively. GRAPHICAL ABSTRACT
含交联剂和不含交联剂的生物聚合物壳聚糖基水凝胶的合成用于去除工业染料普罗西翁蓝HERD的比较研究
摘要本研究报道了含有和不含有交联剂的生物基聚合物复合水凝胶的制备和应用,用于去除工业染料procion blue HERD(PB)。生物聚合物壳聚糖、丙烯酸为单体、过硫酸钾(K2S2O8)为引发剂合成了复合水凝胶。以硫脲(CH4N2S)为交联剂,采用微波辐照技术合成了交联复合水凝胶。采用傅立叶变换红外光谱(FT-IR)、热重分析(TGA)、差热分析(DTG)和差热分析法(DTA)等技术,对不含交联剂(CH)和含交联剂硫脲(CH-T)合成的壳聚糖基水凝胶进行了分析。考察了CH和CH-T对水溶液中PB的吸附能力。对于恒定剂量的PB(5 mg L−1)。工业染料(PB)在CH和CH-T上的吸附实验数据完全符合Freundlich和Langmuir等温线。对于k值为10.17的伪二阶动力学方程,观察到PB脱色的实验数据的完美拟合 × 10−3 mg−1分钟−1和6.719 × 10−3 mg−1 min−1分别与CH和CH-T作用。图形摘要
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Indian Chemical Engineer
Indian Chemical Engineer ENGINEERING, CHEMICAL-
CiteScore
3.00
自引率
6.70%
发文量
33
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