Mesoporous silicate/carbon composites derived from dye-loaded palygorskite clay waste for efficient removal of organic contaminants | |
Department | 甘肃省黏土矿物应用重点实验室 |
Wang WB (王文波)1; Lu TT (逯桃桃)1; Chen Yulin3; Tian GY (田光燕)1; Virender K. Sharma2; Zhu YF (朱永峰)1; Zong L (宗莉)1; Wang AQ (王爱勤)1 | |
The second department | 功能复合材料组 |
2019-12 | |
Source Publication | Science of The Total Environment |
Volume | 696Issue:无Pages:133955 |
Abstract | Palygorskite (Pal) is a natural abundant environment-friendly adsorbent that has shown high efficiency to decontaminate dye in water. However, the dye removal results in transformation of Pal to a very stable Maya Blue-like structure or waste Pal clay (WPal), which could not be easily regenerated by a commonly used desorption process. This paper presents a use of WPal as the precursor material to synthesize a highly-efficient mesoporous silicate/carbon composite adsorbent. The composite adsorbent has a large specific surface area (427.9 m2·g−1), a high negative potential (−40.6 mV) and a mesoporous size (3.48 nm). This adsorbent shows almost complete removal of tetracycline (TC), crystal violet (CV) and methylene blue (MB) (initial concentration, 200 mg·L−1) with the optimal adsorption capacities of 319.8 mg·g−1, 244.4 mg·g−1 and 281.7 mg·g−1, respectively. The active -Si-O− adsorption sites produced by the breaking of inert Si-O-Si (or M) bonds and the electrostatic interactions of negatively charged adsorbents to adsorbates play a major role in the adsorption process. Adsorption capacities of the developed composite are significantly higher than that of Pal, WPal and hydrothermally treated WPal (HWPal). Results demonstrate that the composite adsorbents have high potential in decontamination of organics in water efficiently. |
Keyword | Palygorskite Mesoporous silicate Waste Dye Antibiotics Adsorption |
MOST Discipline Catalogue | 工学::材料科学与工程(可授工学、理学学位) ; 工学::化学工程与技术 |
DOI | 10.1016/j.scitotenv.2019.133955 |
URL | 查看原文 |
Indexed By | SCI |
If | 5.589 |
Language | 英语 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/25392 |
Collection | 甘肃省黏土矿物应用研究重点实验室 |
Corresponding Author | Wang AQ (王爱勤) |
Affiliation | 1.Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China 2.Program for the Environment and Sustainability, Department of Environmental and Occupational Health, School of Public Health, Texas A&M University, 212 Adriance Lab Road, 1266 TAMU, College Station, TX 77843, USA 3.Department of Material Science and Engineering, Faculty of Engineering, National University of Singapore, 21 Lower Kent Ridge Road, Singapore 119077, Singapore |
Recommended Citation GB/T 7714 | Wang WB ,Lu TT ,Chen Yulin,et al. Mesoporous silicate/carbon composites derived from dye-loaded palygorskite clay waste for efficient removal of organic contaminants[J]. Science of The Total Environment,2019,696(无):133955. |
APA | Wang WB .,Lu TT .,Chen Yulin.,Tian GY .,Virender K. Sharma.,...&Wang AQ .(2019).Mesoporous silicate/carbon composites derived from dye-loaded palygorskite clay waste for efficient removal of organic contaminants.Science of The Total Environment,696(无),133955. |
MLA | Wang WB ,et al."Mesoporous silicate/carbon composites derived from dye-loaded palygorskite clay waste for efficient removal of organic contaminants".Science of The Total Environment 696.无(2019):133955. |
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