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Synthesis and characterization of a novel cationic polyacrylamide-based flocculants to remove Congo red efficiently in acid aqueous environment
Journal of Materials Science: Materials in Electronics ( IF 2.8 ) Pub Date : 2020-09-23 , DOI: 10.1007/s10854-020-04422-3
Sarfaraz Khan , Huaili Zheng , Qiang Sun , Yongzhi Liu , Hong Li , Wei Ding , Andrea Navarro

Dye treatments in industrial wastewaters causes numerous obstacles while stains exist normally constant to radiance as well as corrosion and thus, aerobic digestion. The removal of Congo red dye in low concentration from acidic aqueous solution is the main objective of present work. Synthesis of Acrylamide (AM), Diallyl Dimethyl Ammonium Chloride Propylene (DADMAC) and Acryloyloxyethyltrimethyl ammonium chloride (DAC) (PADD) were carried by UV-initiated polymerization, and polyacrylamide (PAM) as contrast sample. Several analytical techniques existed employed to characterization and demonstrate the productive synthesize of PADD, characteristics and composition of the flocculants was studied through FTIR, 1HNMR while thermal stability of PADD in addition PAM was studied by TGA. In addition, the strong structure of surface morphology was confirmed by scanning electronic microscopy (SEM). Established effective process was used to evaluate the flocculation behaviour with special characteristics. Measuring the parameters, dosage of flocculants, flocculation time, temperature, flocculants initial concentration of Congo red dye, stirring speed and zeta potential in removal of Congo red efficiently in acid aqueous environment. These factors presented that in the condition of strong acidity, low concentration and charge neutralization, the adsorption and bridging effect of PADD on Congo red dye was dominant. Under the idyllic conditions concentration of dye 3.0 mg L−1 and pH 6.0, the maximum removal rates of Congo red dye have been 96.45% and 81.10%, PADD and PAM, respectively. PADD provides a scientific basis platform for the removal of Congo red dye efficiently.



中文翻译:

新型阳离子聚丙烯酰胺基絮凝剂的合成与表征,在酸性水环境中有效去除刚果红

工业废水中的染料处理会造成许多障碍,而污点通常对辐射,腐蚀以及需氧消化通常恒定不变。从酸性水溶液中去除低浓度的刚果红染料是当前工作的主要目标。丙烯酰胺(AM),二烯丙基二甲基氯化丙烯丙烯(DADMAC)和丙烯酰氧基乙基三甲基氯化铵(DAC)(PADD)的合成通过紫外线引发的聚合反应进行,聚丙烯酰胺(PAM)作为对比样品。现有几种分析技术可用于表征和证明PADD的生产合成,通过FTIR研究了絮凝剂的特性和组成,1通过TGA研究了PADD与PAM之间的热稳定性的HNMR。另外,通过扫描电子显微镜(SEM)证实了表面形态的强结构。建立了有效的过程以评价具有特殊特征的絮凝行为。测量在酸性水环境中有效去除刚果红的参数,絮凝剂用量,絮凝时间,温度,絮凝剂刚果红染料的初始浓度,搅拌速度和ζ电位。这些因素表明,在强酸,低浓度和电荷中和的条件下,PADD对刚果红染料的吸附和桥联作用占主导。在田园条件下,染料浓度为3.0 mg L -1在pH值为6.0的条件下,刚果红染料的最大去除率为PADD和PAM分别为96.45%和81.10%。PADD为有效去除刚果红染料提供了科学依据的平台。

更新日期:2020-09-23
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