Purification of oily seawater/wastewater using superhydrophobic nano-silica coated mesh and sponge

Changjoo Yeom; Younghun Kim

Journal of Industrial and Engineering Chemistry, Vol.40, 47-53, August, 2016

DOI10.1016/j.jiec.2016.06.005 Export Citation

Purification of oily seawater/wastewater using superhydrophobic nano-silica coated mesh and sponge

Changjoo Yeom, and Younghun Kim^†

Department of Chemical Engineering, Kwangwoon University, Wolgye-dong, Nowon-gu, Seoul 139-701, Republic of Korea

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Superhydrophobic mesh and sponge were fabricated by a simple and fast dip-coating of silica nanoparticles (SiNP). Hexadecyltrimethoxysilane (HDTMS) was used as a hydrophobic reagent to make the superhydrophobic surface, by being grated onto the SiNP-mesh or sponge. As-made HDTMS-SiNP-mesh showed a water contact angle greater than 150°, meaning the successful creation of a superhydrophobic surface, and a high separation efficiency (99%) of target oils from oily wastewater/seawater even after 20-times recycling test. In kinetic test, the higher the kinematic viscosity of the target oil, the slower the separation rate, but the higher the separation efficiency. Therefore, the present approach of simple and inexpensive fabrication of superhydrophobic HDTMS-SiNP-mesh or sponge could offer promising applications in oil.water separation and off-shore oil spills.

Keywords:Superhydrophobic;Oil separation;Silica nanoparticle;Mesh;Sponge

[References]

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[Referenced By]

[1] Shannon MA, Bohn PW, Elimelech M, Georgiadis JG, Marinas BJ, Mayes AM, Nature, 452, 301 (2008)

[2] Gondal MA, Sadullah MS, Dastageer MA, McKinley GH, Panchanathan D, Varanasi KK, ACS Appl. Mater. Interfaces, 6, 13422 (2014)

[3] Li J, Yan L, Li H, Li W, Zha F, Lei Z, J. Mater. Chem. A, 3, 14696 (2015)

[4] Cheng ZJ, Wang JW, Lai H, Du Y, Hou R, Li C, Zhang NQ, Sun KN, Langmuir, 31(4), 1393 (2015)

[5] Song J, Huang S, Lu Y, Bu X, Mates JE, Ghosh A, Ganguly R, Carmalt CJ, Parkin IP, Xu W, Megaridis CM, ACS Appl. Mater. Interfaces, 6, 19858 (2014)

[6] Pham VH, Dickerson JH, ACS Appl. Mater. Interfaces, 6, 14181 (2014)

[7] Kota AK, Kwon G, Choi W, Mabry JM, Tuteja A, Nat. Commun., 3, 1025 (2012)

[8] Feng L, Zhang Z, Mai Z, Ma Y, Liu B, Jiang L, Zhu D, Angew. Chem.-Int. Edit., 43, 2012 (2004)

[9] Wang C, Yao T, Wu J, Ma C, Fan Z, Wang Z, Cheng Y, Lin Q, Yang B, ACS Appl. Mater. Interfaces, 1, 2613 (2009)

[10] Wang CF, Tzeng FS, Chen HG, Chang CJ, Langmuir, 28(26), 10015 (2012)

[11] Guo W, Zhang Q, Xiao HB, Xu J, Li QT, Pan XH, Huang ZY, Appl. Surf. Sci., 314, 408 (2014)

[12] Wang FJ, Lei S, Xue MS, Ou JF, Li W, Langmuir, 30(5), 1281 (2014)

[13] Li J, Li D, Yang Y, Li J, Zha F, Lei Z, Green Chem., 18, 541 (2016)

[14] Li J, Kang R, Tang X, She H, Yang Y, Zha F, Nanoscale, 8, 7638 (2016)

[15] Li J, Yan L, Li H, Li J, Zha F, Lei Z, RSC Adv., 5, 53802 (2015)

[16] Li J, Yan L, Zhao Y, Zha F, Wang Q, Lei Z, Phys. Chem. Chem. Phys., 17, 6451 (2015)

[17] Wang QJ, Cui Z, Mao Y, Chen QM, Appl. Surf. Sci., 253(23), 9054 (2007)

[18] Kester DR, Duedall IW, Connors DN, Pytkowicz RM, Limnol. Oceanogr., 12, 176 (1967)

[19] Le Clech P, Jefferson B, Chang IS, Judd SJ, J. Membr. Sci., 227(1-2), 81 (2003)

[20] Cho SR, Cho HG, J. Korean Chem. Sco., 57, 432 (2013)

[21] Sang YC, Albadarin AB, Al-Muhtaseb AH, Mangwandi C, McCracken JN, Bell SEJ, Walker GM, Appl. Surf. Sci., 335, 107 (2015)

[22] Du X, Huang X, Li XY, Meng XM, Yao L, He JH, Huang HW, Zhang XJ, J. Colloid Interface Sci., 458, 79 (2015)

[23] Li K, Zeng X, Li H, Lai X, Xie H, Mater. Lett., 120, 255 (2014)

[24] Yang H, Zhang X, Cai ZQ, Pi P, Zheng D, Wen X, Cheng J, Yang Z, Surf. Coat. Technol., 205, 5387 (2011)

[25] Casie ABD, Baxter S, J. Chem. Soc.-Faraday Trans., 40, 546 (1944)

[26] Abraham A, Kardos A, Mezei A, Campbell RA, Vargat I, Langmuir, 30(17), 4970 (2014)