气候变化领域集成服务门户(CCPortal): Production of Graphene Membranes from Rice Husk Biomass Waste for Improved Desalination

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DOI	10.3390/nano14020224
	Production of Graphene Membranes from Rice Husk Biomass Waste for Improved Desalination
	Seitzhanova, Makpal; Azat, Seitkhan; Yeleuov, Mukhtar; Taurbekov, Azamat; Mansurov, Zulkhair; Doszhanov, Erlan; Berndtsson, Ronny
发表日期	2024
EISSN	2079-4991
起始页码	14
结束页码	2
卷号	14 期号:2
英文摘要	Inexpensive and efficient desalination is becoming increasingly important due to dwindling freshwater resources in view of climate change and population increase. Improving desalination techniques of brackish water using graphene-based materials has the possibility to revolutionize freshwater production and treatment. At the same time, graphene matter can be cheaply mass-produced from biowaste materials. In view of this, graphene material was obtained from a four-step production approach starting from rice husk (RH), including pre-carbonation, desilication, chemical activation, and exfoliation. The results showed that the produced samples contained a mixture of graphene layers and amorphous carbon. The activation ratio of 1:5 for carbonized RH and potassium hydroxide (KOH), respectively, provided higher graphene content than the 1:4 ratio of the same components, while the number of active layers remained unaffected. Further treatment with H2O2 did not affect the graphene content and exfoliation of the amorphous carbon. Preparation of the graphene material by the NIPS technique and vacuum filtration displayed different physicochemical characteristics of the obtained membranes. However, the membranes' main desalination function might be related more to adsorption rather than size exclusion. In any case, the desalination properties of the different graphene material types were tested on 35 g/L saltwater samples containing NaCl, KCl, MgCl2, CaSO4, and MgSO4. The produced graphene materials efficiently reduced the salt content by up to 95%. Especially for the major constituent NaCl, the removal efficiency was high.
英文关键词	graphene membranes; desalination; biomass waste; rice husk; water treatment; nanotechnology; green technology
语种	英语
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:001150915400001
来源期刊	NANOMATERIALS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/296698
作者单位	Al-Farabi Kazakh National University; Satbayev University; Institute of Combustion Problems; Lund University
推荐引用方式 GB/T 7714	Seitzhanova, Makpal,Azat, Seitkhan,Yeleuov, Mukhtar,et al. Production of Graphene Membranes from Rice Husk Biomass Waste for Improved Desalination[J],2024,14(2).
APA	Seitzhanova, Makpal.,Azat, Seitkhan.,Yeleuov, Mukhtar.,Taurbekov, Azamat.,Mansurov, Zulkhair.,...&Berndtsson, Ronny.(2024).Production of Graphene Membranes from Rice Husk Biomass Waste for Improved Desalination.NANOMATERIALS,14(2).
MLA	Seitzhanova, Makpal,et al."Production of Graphene Membranes from Rice Husk Biomass Waste for Improved Desalination".NANOMATERIALS 14.2(2024).