| Preparation and Separation Performance of Hollow Fiber Spinel Membrane Based on Copper-containing Sludge for Oily Wastewater |
| Authors： Zhao Zhiyu, Zhong Linxin, Wang Dong, Dong Yingchao |
| Units： School of Environmental Science and Technology, Dalian University of Technology, 116000 |
| KeyWords： Copper-containing sludge; Waste recycling; Oily wastewater; Membrane separation; Ceramic membrane |
| ClassificationCode：TQ028 ;X52 |
| year,volume(issue):pagination： 2022,42(2):1-7 |
|
Abstract： |
| The ecological and environmental problems caused by the discharge of oily wastewaters have increasingly attracted wide attentions. The CuFe2O4 hollow fiber membranes were prepared from actual heavy metal sludge and Fe2O3 via dry/wet spinning technology combined with high temperature thermal conversion methods. Also, the separation performance of CuFe2O4 for oil-in-water (O/W) emulsions was investigated. Result showed that the copper ions were stabilized by CuFe2O4 phase at certain sintering temperatures. The superhydrophilic and underwater superoleophobic CuFe2O4 spinel membranes were obtained with good permeability at 1000 °C. Stabilized permeability of 177 L/(m2·h·bar) were obtained with high oil rejection of 99.69%, demonstrating the excellent separation performance for O/W emulsion. In addition, the efficient separation of actual oily wastewater was also obtained via CuFe2O4 membranes. This copper ions-stabilized mechanism via the spinel phase that converted the copper-containing sludge into CuFe2O4 membrane was finally applied to the oily wastewater separation, achieving the environmental concept of "treating waste of waste". |
|
Funds： |
| 国家重点研发专项(No. 2019YFA0705803)、兴辽英才项目(No. XLYC1807250)、国家自然科学基金(No. 21876020和No. 52070033)和企业横向课题(No.HX20190810) |
|
AuthorIntro： |
| 赵志育（1995-05），男，河南，硕士，研究方向膜分离E-mail：zyzhao6@mail.dlut.edu.cn |
|
Reference： |
|
参考文献 [1] Ajmal M, Rao R a K, Khan M A. Adsorption of copper from aqueous solution on Brassica cumpestris (mustard oil cake)[J]. Journal of Hazardous Materials, 2005, 122(1-2):177-183. [2] Bonen D, Sarkar S L. The effects of simulated environmental attack on immobilization of heavy metals doped in cement-based materials[J]. Journal of Hazardous Materials, 1995, 40(3):321-335. [3]易龙生, 赵立华, 许元洪, et al. 电镀污泥中铜的浸出和溶剂萃取回收研究[J]. 矿冶工程, 2019, 39(04): 115-118+122. [4] 陈锋. 印制线路板行业水处理含铜污泥处置技术综述[J]. 污染防治技术, 2006, 019(004): 48-49,71. [5] Tang Y, Chui S S-Y, Shih K, et al. Copper stabilization via spinel formation during the sintering of simulated copper-laden sludge with aluminum-rich ceramic precursors[J]. Environmental Science & Technology, 2011, 45(8): 3598-3604. [6] Shih K, Tang Y. Incorporating simulated zinc ash by kaolinite- and sludge-based ceramics: phase transformation and product leachability[J]. Chinese Journal of Chemical Engineering, 2012, 20(3): 411-416. [7] Liao C, Tang Y, Liu C, et al. Double-Barrier mechanism for chromium immobilization: A quantitative study of crystallization and leachability[J]. Journal of Hazardous Materials, 2016, 311(jul.5): 246-253. [8] Tai Z S, Hubadillah S K, Othman M H D, et al. Influence of pre-treatment temperature of palm oil fuel ash on the properties and performance of green ceramic hollow fiber membranes towards oil/water separation application[J]. Separation and Purification Technology, 2019, 222: 264-277. [9] Zhu L, Dong X, Xu M, et al. Fabrication of mullite ceramic-supported carbon nanotube composite membranes with enhanced performance in direct separation of high-temperature emulsified oil droplets[J]. Journal of Membrane Science, 2019, 582: 140-150. [10] Liu S, Li K, Hughes R. Preparation of porous aluminium oxide (Al2O3) hollow fibre membranes by a combined phase-inversion and sintering method[J]. Ceramics International, 2003, 29(8): 875-881. [11] Wang B, Chen C, Liu H, et al. WO3/TiO2 superhydrophilic and underwater superoleophobic membrane for effective separation of oil-in-water emulsions[J]. Thin Solid Films, 2018, 665: 9-16. [12] Xu M, Xu C, Rakesh K P, et al. Hydrophilic SiC hollow fiber membranes for low fouling separation of oil-in-water emulsions with high flux[J]. RSC Advances, 2020, 10(8): 4832-4839. [13] 张小珍. 新型中空纤维陶瓷膜的制备科学研究与性能表征[D]. 中国科学技术大学, 2010. [14] Li L, Dong X, Dong Y, et al. Thermal conversion of hazardous metal copper via the preparation of CuAl2O4 Spinel-based ceramic membrane for potential stabilization of simulated copper-rich waste[J]. ACS Sustainable Chemistry & Engineering, 2015, 3(11): 2611-2618. [15] Wei C C, Chen O Y, Liu Y, et al. Ceramic asymmetric hollow fibre membranes—One step fabrication process[J]. Journal of Membrane Science, 2008, 320(1-2): 191-197. [16] Berbenni V, Marini A, Milanese C, et al. Solid state synthesis of CuFe2O4 from Cu(OH)2·CuCO3–4FeC2O4·2H2O mixtures: mechanism of reaction and thermal characterization of CuFe2O4[J]. Journal of Thermal Analysis & Calorimetry, 2010, 99(2): 437-422. [17] Hu X, Yu Y, Zhou J, et al. The improved oil/water separation performance of graphene oxide modified Al2O3 microfiltration membrane[J]. Journal of Membrane Science, 2015, 476: 200-204. |
|
Service： |
| 【Download】【Collect】 |
《膜科学与技术》编辑部 Address: Bluestar building, 19 east beisanhuan road, chaoyang district, Beijing; 100029 Postal code; Telephone：010-80492417/010-80485372; Fax：010-80485372 ; Email：mkxyjs@163.com
京公网安备11011302000819号