干旱区生态环境知识资源中心(Arid): Quantifying the combined effect of pH and salinity on the performance of water absorbing polymers used for drought management

Arid

DOI	10.1007/s10965-021-02795-5
	Quantifying the combined effect of pH and salinity on the performance of water absorbing polymers used for drought management
	Saha, Abhisekh; Rattan, Bharat; Sekharan, Sreedeep; Manna, Uttam
通讯作者	Saha, A (corresponding author), Indian Inst Technol Guwahati, Dept Civil Engn, Gauhati, Assam, India.
来源期刊	JOURNAL OF POLYMER RESEARCH
ISSN	1022-9760
EISSN	1572-8935
出版年	2021
卷号	28 期号:11
英文摘要	Water absorbing polymers (WAPs) are widely used in the agricultural field of arid and semiarid regions as soil amendments to increase the water retention capacity and minimize irrigation frequency. The agricultural soils in these regions generally have varying levels of pH and salinity, which would influence and inhibit the performance of WAP. The effect of pH and salinity on performance of WAP and its application rate has not been addressed adequately. This study quantifies the effect of different salt ions and pH on the performance of two different WAPs, including commercially available WAP (crosslinked potassium polyacrylate) and laboratory-grade WAP (crosslinked fly ash-polyacrylate superabsorbent composite). Experiments were performed to measure the water absorbing capacity (WAC) of the used WAPs in different solutions or swelling mediums with varying salt concentrations and pH. The combined effect of seven different commonly occurring inorganic salts with varying concentrations (0.01 M, 0.05 M, 0.1 M, 0.15 M, 0.2 M, and 0.3 M) and three different pH levels (5, 7, and 9) on the WAC of the WAPs was evaluated. It was found that the WAC was highly sensitive to the ionic strength and the type of cations/ anions present in the solution. The experimental results were used to develop a unique relationship between WAC and the electrical conductivity (EC) of the solvent, which needs to be incorporated for the basic characterization of WAP. This study demonstrates the usefulness of the proposed relationship for deciding appropriate WAP application rates in different agricultural soils based on their EC values.
英文关键词	Water absorbing capacity Superabsorbent polymer Soil salinity Application rate Electrical conductivity
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000709898100002
WOS关键词	SWELLING BEHAVIORS ; SUPERABSORBENT COMPOSITE ; RETENTION PROPERTIES ; SALT-RESPONSIVENESS ; DIFFERENT SOILS ; STARCH ; CLAY ; AVAILABILITY ; TEMPERATURE ; AMENDMENT
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/2XILL650/364002
作者单位	[Saha, Abhisekh; Rattan, Bharat; Sekharan, Sreedeep] Indian Inst Technol Guwahati, Dept Civil Engn, Gauhati, Assam, India; [Manna, Uttam] Indian Inst Technol Guwahati, Dept Chem, Gauhati, Assam, India; [Manna, Uttam] Indian Inst Technol Guwahati, Ctr Nanotechnol, Gauhati, Assam, India
推荐引用方式 GB/T 7714	Saha, Abhisekh,Rattan, Bharat,Sekharan, Sreedeep,et al. Quantifying the combined effect of pH and salinity on the performance of water absorbing polymers used for drought management[J],2021,28(11).
APA	Saha, Abhisekh,Rattan, Bharat,Sekharan, Sreedeep,&Manna, Uttam.(2021).Quantifying the combined effect of pH and salinity on the performance of water absorbing polymers used for drought management.JOURNAL OF POLYMER RESEARCH,28(11).
MLA	Saha, Abhisekh,et al."Quantifying the combined effect of pH and salinity on the performance of water absorbing polymers used for drought management".JOURNAL OF POLYMER RESEARCH 28.11(2021).