干旱区生态环境知识资源中心(Arid): Study on Adsorption Characteristics and Water Retention Properties of Attapulgite-Sodium Polyacrylate and Polyacrylamide to Trace Metal Cadmium Ion

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DOI	10.3390/polym16121756
	Study on Adsorption Characteristics and Water Retention Properties of Attapulgite-Sodium Polyacrylate and Polyacrylamide to Trace Metal Cadmium Ion
	Cai, Ziming; Zhan, Feng; Wang, Yingnan; Wu, Meiling; Kong, Lingjian; Wang, An; Huang, Zhanbin
通讯作者	Zhan, F
来源期刊	POLYMERS
EISSN	2073-4360
出版年	2024
卷号	16 期号:12
英文摘要	The adsorption mechanism of superabsorbent polymer (SAP) can provide theoretical guidance for their practical applications in different environments. However, there has been limited research on the mechanism of attapulgite-sodium polyacrylate. This research aimed to compare the Cd(II) adsorption characteristics and water retention properties of organic-inorganic composite SAP (attapulgite-sodium polyacrylate, OSAP) and organic SAP (polyacrylamide, JSAP). Batch experiments were used to investigate the kinetics of Cd(II) adsorption, as well as the thermodynamic properties and factors influencing these properties. The results show that the Cd(II) adsorption capacity was directly proportional to the pH value. The maximum adsorption capacities of OSAP and JSAP were of 770 and 345 mgg(-1). The Cd(II) adsorption for OSAP and JSAP conformed to the Langmuir and the quasi-second-order kinetic model. This indicates that chemical adsorption is the primary mechanism. The adsorption process was endothermic (Delta H0 > 0) and spontaneous (Delta G0 < 0). The water adsorption ratios of OSAP and SAP were 474.8 and 152.6 in pure water. The ratio decreases with the increase in Cd(II) concentration. OSAP and JSAP retained 67.23% and 38.37% of the initial water adsorption after six iterations of water adsorption. Hence, OSAP is more suitable than JSAP for agricultural and environmental ecological restoration in arid and semi-arid regions.
英文关键词	superabsorbent polymer cadmium ion (Cd(II)) adsorption capacity adsorption kinetics water adsorption ratio
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001257341600001
WOS关键词	ACTIVATED CARBON ; INFRARED SPECTRA ; AQUEOUS-SOLUTION ; HEAVY-METALS ; REMOVAL ; ACID ; WASTEWATERS ; COMPOSITE ; SORPTION ; SINGLE
WOS类目	Polymer Science
WOS研究方向	Polymer Science
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405216
推荐引用方式 GB/T 7714	Cai, Ziming,Zhan, Feng,Wang, Yingnan,et al. Study on Adsorption Characteristics and Water Retention Properties of Attapulgite-Sodium Polyacrylate and Polyacrylamide to Trace Metal Cadmium Ion[J],2024,16(12).
APA	Cai, Ziming.,Zhan, Feng.,Wang, Yingnan.,Wu, Meiling.,Kong, Lingjian.,...&Huang, Zhanbin.(2024).Study on Adsorption Characteristics and Water Retention Properties of Attapulgite-Sodium Polyacrylate and Polyacrylamide to Trace Metal Cadmium Ion.POLYMERS,16(12).
MLA	Cai, Ziming,et al."Study on Adsorption Characteristics and Water Retention Properties of Attapulgite-Sodium Polyacrylate and Polyacrylamide to Trace Metal Cadmium Ion".POLYMERS 16.12(2024).