Preparation of Diatomite Based Porous Slow-Release Materials and its Adsorption-Release Properties on Phoxim

IF 6 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Journal of Environmental Informatics Pub Date : 2021-08-31 DOI:10.3808/jei.202100468
Y. Liu, Y. Zhang, X. Sheng, N. Li, Q. Ping, M. Niu, P. Lu, J. Zhang
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引用次数: 3

Abstract

Slow-release materials have the property of controlling the slow-release of drugs. At present, polymer slow-release materials have been widely studied, but the stability is poor and the release effect of components is difficult to control. The diatomite mineral is light in weight, small in volume and stable in physical and chemical properties. A series of diatomite based porous slow-release materials were prepared to explore the adsorption-release performance. The prepared slow-release materials have excellent porous structure and adsorption-release properties. The adsorption process of phoxim onto slow-release materials accorded with Freundlich model. The maximum adsorption capacity reached 217.86 mg g-1 at 25 oC. In addition, the release effect of phoxim from slow-release materials was obvious under acid or high temperature conditions. The limit release amount was 60.04 and 80.2% respectively. The slow-release time was up to 25 days which will reduce the phoxim residues efficiently. According to the fitting results of Ritger-Peppas model, the release process was controlled by Fick diffusion mechanism.
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硅藻土基多孔缓释材料的制备及其对辛硫磷的吸附-释放性能
缓释材料具有控制药物缓释的特性。目前,高分子缓释材料得到了广泛的研究,但其稳定性较差,组分的释放效果难以控制。硅藻土矿物重量轻,体积小,物理化学性质稳定。制备了一系列硅藻土基多孔缓释材料,考察其吸附-释放性能。所制备的缓释材料具有优良的多孔结构和吸附-释放性能。辛硫磷在缓释材料上的吸附过程符合Freundlich模型。在25℃时吸附量最大达到217.86 mg g-1。此外,辛硫磷缓释材料在酸性或高温条件下的释放效果明显。其释放限量分别为60.04%和80.2%。缓释时间长达25天,可有效减少硫辛磷残留。Ritger-Peppas模型拟合结果表明,释放过程受菲克扩散机制控制。
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来源期刊
Journal of Environmental Informatics
Journal of Environmental Informatics ENVIRONMENTAL SCIENCES-
CiteScore
12.40
自引率
2.90%
发文量
7
审稿时长
24 months
期刊介绍: Journal of Environmental Informatics (JEI) is an international, peer-reviewed, and interdisciplinary publication designed to foster research innovation and discovery on basic science and information technology for addressing various environmental problems. The journal aims to motivate and enhance the integration of science and technology to help develop sustainable solutions that are consensus-oriented, risk-informed, scientifically-based and cost-effective. JEI serves researchers, educators and practitioners who are interested in theoretical and/or applied aspects of environmental science, regardless of disciplinary boundaries. The topics addressed by the journal include: - Planning of energy, environmental and ecological management systems - Simulation, optimization and Environmental decision support - Environmental geomatics - GIS, RS and other spatial information technologies - Informatics for environmental chemistry and biochemistry - Environmental applications of functional materials - Environmental phenomena at atomic, molecular and macromolecular scales - Modeling of chemical, biological and environmental processes - Modeling of biotechnological systems for enhanced pollution mitigation - Computer graphics and visualization for environmental decision support - Artificial intelligence and expert systems for environmental applications - Environmental statistics and risk analysis - Climate modeling, downscaling, impact assessment, and adaptation planning - Other areas of environmental systems science and information technology.
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