干旱区生态环境知识资源中心(Arid): Recycling Natural Fibre to Superabsorbent Hydrogel Composite for Conservation of Irrigation Water in Semi-arid Regions

Arid

DOI	10.1007/s12649-021-01489-9
	Recycling Natural Fibre to Superabsorbent Hydrogel Composite for Conservation of Irrigation Water in Semi-arid Regions
	Saha, Abhisekh; Gupt, Chandra Bhanu; Sekharan, Sreedeep
通讯作者	Saha, A (corresponding author), Indian Inst Technol Guwahati, Dept Civil Engn, Gauhati, India.
来源期刊	WASTE AND BIOMASS VALORIZATION
ISSN	1877-2641
EISSN	1877-265X
出版年	2021
英文摘要	Purpose Effective management of the issues related to increasing water scarcity in semi-arid regions needs special attention to minimize the negative influence of water stress conditions and prevent soil degradation to ensure global food security. Methods The present study develops an eco-friendly, low-cost superabsorbent hydrogel composite (SHC) through recycling natural fibre using graft polymerization method. Effectiveness of the synthesized SHC for conservation of irrigation water was investigated by measuring its water absorbency in different salt, and pH solutions, reswelling capacity, and the soil-water retention curve (SWRC) of SHC amended soil. Results The synthesized SHC showed water absorbency of 342 g/g in distilled water, indicating its suitability for agricultural application. The SHC showed excellent re-swelling characteristics for more than eight alternate wetting-drying cycles. The sensitivity of SHC to different inorganic salt solutions was investigated, which showed its water absorbency higher than 90 g/g at the maximum salinity level permitted for plant growth. The addition of SHC in silt loam soil showed an increase in water availability of 56%, 81%, and 125%, with the SHC concentrations of 0.1%, 0.2%, and 0.4%, respectively. Conclusion The addition of SHC had reduced the irrigation water requirement by 29% as compared to bare soil at an optimum application rate of 0.2%. The study promotes the use of synthesized SHC for the conservation of irrigation water, as well as soil ecosystem, with an additional advantage of contributing to the mass utilization of waste materials. [GRAPHICS] .
英文关键词	Superabsorbent hydrogel Coconut fibre Salt sensitivity Soil water retention Irrigation water conservation Waste recycling
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000657580300002
WOS关键词	PLANT-AVAILABLE WATER ; DROUGHT MANAGEMENT ; SOIL ; AGRICULTURE ; POLYMER ; AMENDMENT ; SALINITY ; GROWTH ; SANDY
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352476
作者单位	[Saha, Abhisekh; Gupt, Chandra Bhanu; Sekharan, Sreedeep] Indian Inst Technol Guwahati, Dept Civil Engn, Gauhati, India
推荐引用方式 GB/T 7714	Saha, Abhisekh,Gupt, Chandra Bhanu,Sekharan, Sreedeep. Recycling Natural Fibre to Superabsorbent Hydrogel Composite for Conservation of Irrigation Water in Semi-arid Regions[J],2021.
APA	Saha, Abhisekh,Gupt, Chandra Bhanu,&Sekharan, Sreedeep.(2021).Recycling Natural Fibre to Superabsorbent Hydrogel Composite for Conservation of Irrigation Water in Semi-arid Regions.WASTE AND BIOMASS VALORIZATION.
MLA	Saha, Abhisekh,et al."Recycling Natural Fibre to Superabsorbent Hydrogel Composite for Conservation of Irrigation Water in Semi-arid Regions".WASTE AND BIOMASS VALORIZATION (2021).