干旱区生态环境知识资源中心(Arid): Sustainable biopolymer soil stabilization in saline rich, arid conditions: a 'micro to macro' approach

Arid

DOI	10.1038/s41598-022-06374-6
	Sustainable biopolymer soil stabilization in saline rich, arid conditions: a 'micro to macro' approach
	Armistead, Samuel J.; Smith, Colin C.; Staniland, Sarah S.
通讯作者	Staniland, SS
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2022
卷号	12 期号:1
英文摘要	Water scarcity in semi-arid/arid regions is driving the use of salt water in mining operations. A consequence of this shift, is the potentially unheeded effect upon Mine Tailing (MT) management. With existing stabilization/solidification methodologies exhibiting vulnerability to MT toxicity and salinity effects, it is essential to explore the scope for more environmentally durable sustainable alternatives under these conditions. Within this study we investigate the effects of salinity (NaCl, 0-2.5 M) and temperatures associated with arid regions (25 degrees C, 40 degrees C), on Locust Bean Gum (LB) biopolymer stabilization of MT exemplar and sand (control) soil systems. A cross-disciplinary 'micro to macro' pipeline is employed, from a Membrane Enabled Bio-mineral Affinity Screen (MEBAS), to Mineral Binding Characterisation (MBC), leading finally to Geotechnical Verification (GV). As predicted by higher Fe2O3 LB binding affinity in saline in the MEBAS studies, LB with 1.25 M NaCl, results in the greatest soil strength in the MT exemplar after 7 days of curing at 40 degrees C. Under these most challenging conditions for other soil strengthening systems, an overall UCS peak of 5033 kPa is achieved. MBC shows the critical and direct relationship between Fe2O3-LB in saltwater to be 'high-affinity' at the molecular level and 'high-strength' achieved at the geotechnical level. This is attributed to biopolymer binding group's increased availability, with their 'salting-in' as NaCl concentrations rises to 1.25 M and then 'salting-out' at higher concentrations. This study highlights the potential of biopolymers as robust, sustainable, soil stabilization additives in challenging environments.
类型	Article
语种	英语
开放获取类型	gold, Green Published, Green Submitted, Green Accepted
收录类别	SCI-E
WOS记录号	WOS:000759084600016
WOS关键词	CEMENT PRODUCTION ; GUAR GUM ; ADSORPTION ; STRENGTH ; ATTACK ; WATER
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394434
推荐引用方式 GB/T 7714	Armistead, Samuel J.,Smith, Colin C.,Staniland, Sarah S.. Sustainable biopolymer soil stabilization in saline rich, arid conditions: a 'micro to macro' approach[J],2022,12(1).
APA	Armistead, Samuel J.,Smith, Colin C.,&Staniland, Sarah S..(2022).Sustainable biopolymer soil stabilization in saline rich, arid conditions: a 'micro to macro' approach.SCIENTIFIC REPORTS,12(1).
MLA	Armistead, Samuel J.,et al."Sustainable biopolymer soil stabilization in saline rich, arid conditions: a 'micro to macro' approach".SCIENTIFIC REPORTS 12.1(2022).