Study of flocculation performance and mechanism of ultrafine montmorillonite particles with NPAM

• Autorzy: Wang Lujun , Min Fanfei , Chen Jun , Wang Ting , Zhou Zhuang

Identyfikatory

DOI

10.37190/ppmp/147790

• Języki publikacji: EN

Abstrakty

EN

Ultrafine montmorillonite particles are the main clay minerals in industrial wastewater. In order to explore the flocculation performance and mechanism of flocculant with montmorillonite, the effects of nonionic polyacrylamide (NPAM) dosage and molecular weight on flocculation effect were studied using a flocculation sedimentation experiment. The morphology of flocs was observed by metallographic microscope and scanning electron microscope, and the microscopic adsorption mechanism was studied utilizing density functional theory (DFT). The results show that the best reagent system for the montmorillonite sample is that the molecular weight of NPAM is 14 million and the added amount is 100 g/t. The floc size increases with rising NPAM dosage, forming a unique multi-level compact space network structure through polymer bridging. The adsorption energy of acrylamide on the Na-(001) surface of montmorillonite is -108.81 kJ/mol, which is significantly higher than -50.66 kJ/mol on the None-(001) surface. Hydrogen bonding is not the main reason for the adsorption of acrylamide on the montmorillonite surface. NPAM mainly causes the flocculation and sedimentation of montmorillonite through the processes of polymer bridging and electrostatic attraction. This study can provide a theoretical basis for the design and synthesis of new flocculants.

Słowa kluczowe

EN

montmorillonite; flocculant; nonionic polyacrylamide; density functional theory

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2022
• Tom: Vol. 58, iss. 3
• Strony: art. no. 147790
• Opis fizyczny: Bibliogr. 42 poz., rys., wykr.

Twórcy

autor

Wang Lujun

• Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China

autor

Min Fanfei

• Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China

autor

Chen Jun

• Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China

autor

Wang Ting

• Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China

autor

Zhou Zhuang

• Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China

Bibliografia

• AKIMKHAN, A.M., 2013. Adsorption of polyacrylic acid and polyacrylamide on montmorillonite. Russ. J. Phys. Chem. A 87, 1875–1880.
• BAI, H., LIU, Y., ZHAO, Y., CHEN, T., CHEN, L., JIAO, X., QING, C., SONG, S., 2020. Effects of clay species on coal flotation under the cationic regulation. Chem. Phys. Lett. 753, 137626.
• CHEN, J., MIN, F., LIU, L., 2019. The interactions between fine particles of coal and kaolinite in aqueous, insights from experiments and molecular simulations. Appl. Surf. Sci. 467–468, 12–21.
• CHEN, J., Min, F., PENG, C., LIU, C., CHEN, S., CHEN, C., 2015. Characteristics of the hydrophobic aggregation of fine particles in coal slurry water under the action of quaternary ammonium salt. Zhongguo Kuangye Daxue Xuebao/Journal China Univ. Min. Technol. 44, 332–340.
• DASH, M., DWARI, R.K., BISWAL, S.K., REDDY, P.S.R., CHATTOPADHYAY, P., MISHRA, B.K., 2011. Studies on the effect of flocculant adsorption on the dewatering of iron ore tailings. Chem. Eng. J. 173, 318–325.
• DENG, Y., DIXON, J.B., WHITE, G.N., LOEPPERT, R.H., JUO, A.S.R., 2006. Bonding between polyacrylamide and smectite. Colloids Surfaces A Physicochem. Eng. Asp. 281, 82–91.
• DOI, A., EJTEMAEI, M., NGUYEN, A. V., 2019. Effects of ion specificity on the surface electrical properties of kaolinite and montmorillonite. Miner. Eng. 143, 105929.
• DWARI, R.K., ANGADI, S.I., TRIPATHY, S.K., 2018. Studies on flocculation characteristics of chromite’s ore process tailing: Effect of flocculants ionicity and molecular mass. Colloids Surfaces A Physicochem. Eng. Asp. 537, 467–477.
• FENG, L., TANG, H.Y., LIU, J.T., SONG, L.L., 2013. Adsorption thermodynamics, kinetics and mechanism of calcium(II) ions onto kaolinite clay in coal slime water. Asian J. Chem. 25, 3927–3930.
• FIJALKOWSKA, G., WIŚNIEWSKA, M., SZEWCZUK-KARPISZ, K., 2019. Studies of the Cationic Polyacrylamide Adsorption on the Montmorillonite Surface in the Presence of Lead(II) Ions. Proceedings 16, 28.
• FORRER, D., VITTADINI, A., 2019. A DFT-D2 study of formic acid adsorption at smectite edges based on pyrophyllite models. Chem. Phys. Lett. 733, 136687.
• GONG, G., ZHANG, Y., ZHENG, H., LIU, G., LI, Y., SHI, K., 2016. Experimental study on the transmittance of the supernatant of refractory slime water. J. Chem. Eng. Japan 49, 417–424.
• GUO, W., ZHANG, H., MA, Z., 2019. Study of Synthesis and Flocculation Properties of New Modified Hydrophobic Organic Polymer P(AM-DM-DMC12). Int. J. Polym. Sci. 2019.
• HAN, Y., LIU, W., CHEN, J., 2016. DFT simulation of the adsorption of sodium silicate species on kaolinite surfaces. Appl. Surf. Sci. 370, 403–409.
• KIM, Y., KIM, C., KIM, J., KIM, Y., LEE, J., 2020. Experimental investigation on the complex chemical reactions between clay minerals and brine in low salinity water-flooding. J. Ind. Eng. Chem. 89, 316–333.
• LI, Q., SHI, W., YANG, Q., 2021. Polarization induced covalent bonding: A new force of heavy metal adsorption on charged particle surface. J. Hazard. Mater. 412, 125168.
• LI, Y., XIA, W., WEN, B., XIE, G., 2019. Filtration and dewatering of the mixture of quartz and kaolinite in different proportions. J. Colloid Interface Sci. 555, 731–739.
• LIN, Z., YANG, C., SHEN, Z., QI, X., 2010. The properties and sedimentation characteristics of extremely sliming coal slime water. Meitan Xuebao/Journal China Coal Soc. 35, 312–315.
• LOU, Z., LIU, H., ZHANG, Y., MENG, Y., ZENG, Q., SHI, J., YANG, M., 2014. A density functional theory study of the hydration of calcium ions confined in the interlayer space of montmorillonites. J. Theor. Comput. Chem. 13, 1–13.
• LUZAR, A., CHANDLER, D., 1993. Structure and hydrogen bond dynamics of water-dimethyl sulfoxide mixtures by computer simulations. J. Chem. Phys. 98, 8160–8173.
• MA, X., FAN, Y., DONG, X., CHEN, R., LI, H., SUN, D., YAO, S., 2018. Impact of clay minerals on the dewatering of coal slurry: An experimental and molecular-simulation study. Minerals 8.
• MCFARLANE, A., YEAP, K.Y., BREMMELL, K., ADDAI-MENSAH, J., 2008. The influence of flocculant adsorption kinetics on the dewaterability of kaolinite and smectite clay mineral dispersions. Colloids Surfaces A Physicochem. Eng. Asp. 317, 39–48.
• MPOFU, P., ADDAI-MENSAH, J., RALSTON, J., 2004. Flocculation and dewatering behaviour of smectite dispersions: Effect of polymer structure type. Miner. Eng. 17, 411–423.
• PENG, C., MIN, F., LIU, L., CHEN, J., 2016. A periodic DFT study of adsorption of water on sodium-montmorillonite (001) basal and (010) edge surface. Appl. Surf. Sci. 387, 308–316.
• REN, B., MIN, F., CHEN, J., FANG, F., LIU, C., 2020. Adsorption mechanism insights into CPAM structural units on kaolinite surfaces: A DFT simulation. Appl. Clay Sci. 197, 105719.
• SABAH, E., ERKAN, Z.E., 2006. Interaction mechanism of flocculants with coal waste slurry. Fuel 85, 350–359.
• SHI, J., LIU, H., MENG, Y., LOU, Z., ZENG, Q., YANG, M., 2013. First-principles study of ammonium ions and their hydration in montmorillonites. J. Mol. Model. 19, 1875–1881.
• SHI, J., LOU, Z., YANG, M., ZHANG, Y., LIU, H., MENG, Y., 2014. Theoretical characterization of formamide on the inner surface of montmorillonite. Surf. Sci. 624, 37–43.
• SUN, X., LIU, W., YANG, Z., ZHUO, Q., ZHANG, H., GENG, P., 2021. DFT study of the adsorption of 2,3-epoxypropyltrimethylammonium chloride on montmorillonite surfaces. J. Mol. Liq. 334, 116145.
• VANEREK, A., ALINCE, B., VAN DE VEN, T.G.M., 2006. Delamination and flocculation efficiency of sodium-activated kaolin and montmorillonite. Colloids Surfaces A Physicochem. Eng. Asp. 273, 193–201.
• VOORA, V.K., AL-SAIDI, W.A., JORDAN, K.D., 2011. Density functional theory study of pyrophyllite and M-montmorillonites (M = Li, Na, K, Mg, and Ca): Role of dispersion interactions. J. Phys. Chem. A 115, 9695–9703.
• WANG, B., XU, W., FU, J., WANG, W., XIAO, X., 2019. Preparation of two nanometer magnetic flocculants and treatment of slime wastewater. IOP Conf. Ser. Earth Environ. Sci. 345.
• WANG, C., SUN, C., LIU, Q., 2020. Formation, breakage, and re-growth of quartz flocs generated by non-ionic high molecular weight polyacrylamide. Miner. Eng. 157, 106546.
• WANG, S., SONG, X., WANG, X., CHEN, Q., QIN, J., KE, Y., 2020. Influence of coarse tailings on flocculation settlement. Int. J. Miner. Metall. Mater. 27, 1065–1074.
• WIŚNIEWSKA, M., FIJALKOWSKA, G., SZEWCZUK-KARPISZ, K., 2018. The mechanism of anionic polyacrylamide adsorption on the montmorillonite surface in the presence of Cr(VI) ions. Chemosphere 211, 524–534.
• WIŚNIEWSKA, M., FIJALKOWSKA, G., SZEWCZUK-KARPISZ, K., URBAN, T., NOSAL-WIERCIŃSKA, A., WÓJCIK, G., 2019. Comparison of adsorption affinity of anionic and cationic polyacrylamides for montmorillonite surface in the presence of chromium(VI) ions. Adsorption 25, 41–50.
• YAN, X., WEI, L., MENG, Q., WANG, J., YANG, Q., ZHAI, S., LU, J., 2021. A study on the mechanism of calcium ion in promoting the sedimentation of illite particles. J. Water Process Eng. 42, 102153.
• YAN, X., ZHANG, X., 2014. Interactive effects of clay and polyacrylamide properties on flocculation of pure and subsoil clays. Soil Res. 52, 727–737.
• YANG, Z., LIU, W., ZHANG, H., JIANG, X., MIN, F., 2018. DFT study of the adsorption of 3-chloro-2-hydroxypropyl trimethylammonium chloride on montmorillonite surfaces in solution. Appl. Surf. Sci. 436, 58–65.
• YU, Y., MA, L., CAO, M., LIU, Q., 2017. Slime coatings in froth flotation: A review. Miner. Eng. 114, 26–36.
• ZHAO, Y., MENG, L., SHEN, X., 2020. Study on ultrasonic-electrochemical treatment for difficult-to-settle slime water. Ultrason. Sonochem. 64, 104978.
• ZHU, S., KHAN, M.A., WANG, F., BANO, Z., XIA, M., 2021. Exploration of adsorption mechanism of 2-phosphonobutane-1,2,4-tricarboxylic acid onto kaolinite and montmorillonite via batch experiment and theoretical studies. J. Hazard. Mater. 403, 123810.

Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).