植物多酚功能化调控磁性材料磁絮凝高岭土悬浊液

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摘要天然植物多酚(PP)作为功能化调控配体,通过原位自组装制备了Fe₃O₄@PP磁性复合材料,用于高岭土悬浊液的磁絮凝.采用SEM观察了Fe₃O₄@PP的形貌;研究了Ca²⁺离子、碱度和腐殖酸浓度对Fe₃O₄@PP絮凝性能的影响.采用光学显微镜观察了磁絮体在生长和破碎过程中的形态和结构特征,通过扩展的DLVO理论探究了Fe₃O₄@PP和高岭土颗粒之间的相互作用机制.结果表明,Fe₃O₄@PP具有优异分散性、化学稳定性和絮凝性能,可以克服碱度和腐殖酸的干扰,实现96.4%的最大浊度去除效率.磁絮凝过程中,磁絮体会逐渐变得致密,并生成长链状聚集体,具有良好的抵抗破碎能力.相互作用能分析表明,磁力主导了整个絮凝过程,其总相互作用势能和作用范围要比静电力和范德华力高三个数量级.此外,pH值、Ca²⁺离子浓度和离子种类也对总相互作用能有重要影响.

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	刘闯
	杜思聪
	程鹏
	梁文艳

关键词 ：磁絮凝, Fe₃O₄, 植物多酚, DLVO模型, 高岭土颗粒

Abstract：Plant polyphenol (PP) was used as a functional regulating ligand in preparation of Fe₃O₄@PP magnetic composite via in-situ self-assembly, which was applied in magnetic flocculation of kaolin suspension. The morphology of Fe₃O₄@PP was observed with SEM. The effects of Ca²⁺ ions, alkalinity, and humic acid concentration on flocculation performance of Fe₃O₄@PP were studied. The morphology and structural features of magnetic flocs during growth and breakage were observed using optical microscopy. The interaction mechanism between Fe₃O₄@PP and kaolin particles was investigated with the extended DLVO theory. The results showed that Fe₃O₄@PP had excellent dispersibility, chemical stability, and flocculation performance, which could overcome the interference of alkalinity and humic acid, achieving a maximum turbidity removal efficiency of 96.4%. During magnetic flocculation, magnetic flocs gradually became denser and formed long-chain aggregates with good resistance to breakage. The analysis of interaction energy indicated that magnetic force dominated the entire flocculation process. The total interaction potential and effective distance of magnetic force were three orders of magnitude higher than electrostatic and van der Waals forces. Furthermore, the total interaction energy was also affected by the properties of the suspension, such as pH value, Ca²⁺ ion concentration, and ion species.

Key words： magnetic flocculation Fe₃O₄ plant polyphenol DLVO theory kaolin particles

收稿日期: 2023-05-15

PACS:

X703

基金资助:国家自然科学基金资助项目(51672028)

通讯作者: 梁文艳,教授,lwy@bjfu.edu.cn E-mail: lwy@bjfu.edu.cn

作者简介: 刘闯(1994-),男,河南南阳人,北京林业大学博士研究生,主要从事环境功能材料的研发与应用.发表论文4篇.lcliuchuang@hotmail.com.

引用本文:

刘闯, 杜思聪, 程鹏, 梁文艳. 植物多酚功能化调控磁性材料磁絮凝高岭土悬浊液[J]. 中国环境科学, 2023, 43(12): 6435-6444. LIU Chuang, DU Si-cong, CHENG Peng, LIANG Wen-yan. Magnetic flocculation of kaolin suspension using magnetic materials functionally regulated with plant polyphenols. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(12): 6435-6444.

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[1] Zhang L F, Min F F, Wang L J, et al. Polymeric flocculants based on the interfacial characteristics of fine clay minerals: A review[J]. Physicochemical Problems of Mineral Processing, 2022,58(4):149652.
[2] Chang C L, Liao C S. Assessing the risk posed by high-turbidity water to water supplies[J]. Environmental Monitoring and Assessment, 2012, 184(5):3127-3132.
[3] Guibai L, Gregory J. Flocculation and sedimentation of high-turbidity waters[J]. Water Research, 1991,25(9):1137-1143.
[4] Momeni M M, Kahforoushan D, Abbasi F, et al. Using Chitosan/CHPATC as coagulant to remove color and turbidity of industrial wastewater: Optimization through RSM design[J]. Journal of Environmental Management, 2018,211:347-355.
[5] Agbovi H K, Wilson L D. Design of amphoteric chitosan flocculants for phosphate and turbidity removal in wastewater[J]. Carbohydrate Polymers, 2018,189:360-370.
[6] Ma J Y, Fu X, Jiang L Y, et al. Magnetic flocculants synthesized by Fe₃O₄ coated with cationic polyacrylamide for high turbid water flocculation[J]. Environmental Science and Pollution Research, 2018,25(26):25955-25966.
[7] Luo L, Nguyen A V. A review of principles and applications of magnetic flocculation to separate ultrafine magnetic particles[J]. Separation and Purification Technology, 2017,172:85-99.
[8] 冯召清,关智杰,杨贤,等.磁絮凝高效处理高浊度废水的性能及机理研究[J]. 环境科学学报, 2022,42(3):197-206. Feng Z Q, Guan Z J, Yang X, et al. Study on the performance and mechanism of magnetic flocculation for the efficient treatment of high turbidity wastewater[J]. Acta Scientiae Circumstantiae, 2022,42(3): 197-206.
[9] Cui H M, Huang X, Yu Z C, et al. Application progress of enhanced coagulation in water treatment[J]. RSC Advances, 2020,10(34): 20231-2044.
[10] Liu C, Wang X Y, Qin L L, et al. Magnetic coagulation and flocculation of a kaolin suspension using Fe₃O₄ coated with SiO₂[J]. Journal of Environmental Chemical Engineering, 2021,9(5):105980.
[11] Liu C, Jiang X X, Wang X Y, et al. Magnetic polyphenol nanocomposite of Fe₃O₄/SiO₂/PP for Cd(II) adsorption from aqueous solution[J]. Environmental Technology, 2022,43(6):935-948.
[12] Panda S K, Aggarwal I, Kumar H, et al. Magnetite nanoparticles as sorbents for dye removal: a review[J]. Environmental Chemistry Letters, 2021,19(3):2487-2525.
[13] Wang L, Liang W Y, Yu J, et al. Flocculation of Microcystis aeruginosa using modified larch tannin[J]. Environmental Science & Technology, 2013,47(11):5771-5777.
[14] Wang X Y, Liu C, Qin L L, et al. Self-assembly of Fe₃O₄ with natural tannin as composites for microalgal harvesting[J]. Fuel, 2022,321: 124038.
[15] Ge S J, Agbakpe M, Wu Z Y, et al. Influences of surface coating, UV irradiation and magnetic field on the algae removal using magnetite nanoparticles[J]. Environmental Science & Technology, 2015,49(2): 1190-1196.
[16] Wang X Y, Zhao Y, Jiang X X, et al. In-situ self-assembly of plant polyphenol-coated Fe₃O₄ particles for oleaginous microalgae harvesting[J]. Journal of Environmental Management, 2018,214:335-345.
[17] Xiong Y J, Huang X F, Lu B, et al. Acceleration of floc-water separation and floc reduction with magnetic nanoparticles during demulsification of complex waste cutting emulsions[J]. Journal of Environmental Sciences (China), 2020,89:80-89.
[18] Zhao Y, Wang X Y, Jiang X X, et al. Harvesting of chlorella vulgaris using Fe₃O₄ coated with modified plant polyphenol[J]. Environmental Science and Pollution Research, 2018,25(26):26246-58.
[19] Ye C Q, Wang D S, Shi B Y, et al. Alkalinity effect of coagulation with polyaluminum chlorides: Role of electrostatic patch[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2007,294(1-3): 163-173.
[20] 张伟超,魏群山,罗专溪,等.碱度和浊度对混凝去除磺胺甲噁唑与土霉素的影响[J]. 环境科学研究, 2015,28(5):802-807. Zhang W C, Wei Q S, Luo Z X, et al. Effects of alkalinity and turbidity on SMZ and OTC removal by coagulation[J]. Research of Environmental Sciences, 2015,28(5):802-807.
[21] Wang C, Shang C, Chen G H, et al. Mechanisms of nC₆₀ removal by the alum coagulation-flocculation-sedimentation process[J]. Journal of Colloid and Interface Science, 2013,411:213-219.
[22] Lertsutthiwong P, Sutti S, Powtongsook S. Optimization of chitosan flocculation for phytoplankton removal in shrimp culture ponds[J]. Aquacultural Engineering, 2009,41(3):188-193.
[23] 王志红,凌慧诗,林鹏,等.含腐殖酸低浊原水的改性凹土强化混凝效果分析和参数确定[J]. 给水排水. 2015,51(9):124-128. Wang Z H, Ling H S, Lin P, et al. Analysis and parameter determination of the enhanced coagulation effect of modified concave soil containing humic acid and low turbidity raw water[J]. Water & Wastewater Engineering, 2015,51(9):124-128.
[24] Xu H, Jiang W, Xiao F, et al. The characteristics of flocs and zeta potential in nano-TiO₂ system under different coagulation conditions[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2014,452:181-188.
[25] 金鹰,王义刚,李宇.长江口粘性细颗粒泥沙絮凝试验研究[J]. 河海大学学报(自然科学版), 2002,(3):61-63. Jin Y, Wang Y G, Li Y. Experimental study on flocculation of cohesive fine grain sediment at Yangtze River estuary[J]. Journal of Hohai University (Natural Sciences), 2002,(3):61-63.
[26] Lv M, Zhang Z H, Zeng J Y, et al. Roles of magnetic particles in magnetic seeding coagulation-flocculation process for surface water treatment[J]. Separation and Purification Technology, 2019,212: 337-343.
[27] Garcia-Martinez H A, Llamas-Bueno M, Song S, et al. Computational study on stability of magnetite and quartz suspensions in an external magnetic field[J]. Journal of Dispersion Science and Technology, 2005,26(2):177-182.
[28] Liu B Z, Zheng H L, Wang Y L, et al. A novel carboxyl-rich chitosan- based polymer and its application for clay flocculation and cationic dye removal[J]. Science of the Total Environment, 2018,640-641:107-115.
[29] Pu L, Zeng Y J, Xu P, et al. Using a novel polysaccharide BM2produced by Bacillus megaterium strain PL8as an efficient bioflocculant for wastewater treatment[J]. International Journal of Biological Macromolecules, 2020,162:374-384.
[30] Nwodo U U, Agunbiade M O, Green E, et al. A freshwater streptomyces, isolated from Tyume River, produces a predominantly extracellular glycoprotein bioflocculant[J]. International Journal of Molecular Sciences, 2012,13(7):8679-8695.
[31] Xia X, Liang Y J, Lan S H, et al. Production and flocculating properties of a compound biopolymer flocculant from corn ethanol wastewater[J]. Bioresource Technology, 2018,247:924-929.