Adsorption Property of Pb(Ⅱ) to Magnetic Red Mud Modified by Alcohol-Amine Titanate

Abstract

Abstract: Magnetized red mud adsorption material (ATMMRM) modified by alcohol-amine titanate was prepared from industrial solid waste red mud (RM) after reducing calcination and grafting modification. Using XRD, FT-IR, SEM, BET, VSM and other characterization methods to characterize and compare RM and ATMMRM. The results show that the surface of ATMMRM is successfully introduced with hydroxyl and amine groups, and the specific surface area and saturation magnetization of ATMMRM are 6.0 and 9.6 times higher than those before modification, respectively. These properties provide more active adsorption sites for the adsorption of Pb(Ⅱ) by ATMMRM and endow the material with magnetic separation ability. The results of static adsorption experiments show that the saturated adsorption capacity of ATMMRM for Pb(Ⅱ) in aqueous solution reach 213 mg·g^-1 at pH=6 and T=25 ℃. The adsorption process of Pb(Ⅱ) from aqueous solution by ATMMRM conforms to Langmuir isotherm model and pseudo-second-order kinetic equation, and is controlled by chemisorption process with spontaneous endothermic entropy increase. The main adsorption mechanism are physical adsorption and chelation of Pb(Ⅱ) with hydroxyl and amine groups grafted on the surface of ATMMRM.

Key words: red mud modified, magnetic, Pb(Ⅱ), adsorption, chelation

CLC Number:

TQ424

LI Chen, LU Jingjing, MENG Mei, LIU Jing, XIE Yan, CHEN Qianlin, AO Xianquan, CAO Yang, YANG Min. Adsorption Property of Pb(Ⅱ) to Magnetic Red Mud Modified by Alcohol-Amine Titanate[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(2): 625-633.

References

[1] CHAI W S, CHEUN J Y, KUMAR P S, et al. A review on conventional and novel materials towards heavy metal adsorption in wastewater treatment application[J]. Journal of Cleaner Production, 2021, 296: 126589.
[2] SALMAN M S, ZNAD H, HASAN M N, et al. Optimization of innovative composite sensor for Pb(Ⅱ) detection and capturing from water samples[J]. Microchemical Journal, 2021, 160: 105765.
[3] SHI S Y, DONG Q, WANG Y P, et al. Self-supporting super hydrophilic MgFe₂O₄ flexible fibers for Pb(Ⅱ) adsorption[J]. Separation and Purification Technology, 2021, 266: 118584.
[4] BHATNAGAR A, KUMAR E, SILLANPÄÄ M. Fluoride removal from water by adsorption: a review[J]. Chemical Engineering Journal, 2011, 171(3): 811-840.
[5] XU X Y, OUYANG X K, YANG L Y. Adsorption of Pb(Ⅱ) from aqueous solutions using crosslinked carboxylated chitosan/carboxylated nanocellulose hydrogel beads[J]. Journal of Molecular Liquids, 2021, 322: 114523.
[6] LIU W C, CHEN X Q, LI W X, et al. Environmental assessment, management and utilization of red mud in China[J]. Journal of Cleaner Production, 2014, 84: 606-610.
[7] 张延利,刘中凯,孙凤娟,等.高温拜耳法赤泥制备高效活化剂及骨架构建体调理市政污泥的研究[J].硅酸盐通报,2020,39(10):3321-3326.
ZHANG Y L, LIU Z K, SUN F J, et al. Preparation of high-efficiency activator and skeleton builder by high-temperature bayer red mud for conditioning municipal sludge[J]. Bulletin of the Chinese Ceramic Society, 2020, 39(10): 3321-3326 (in Chinese).
[8] BALOMENOS E, GIANOPOULOU I, PANIAS D, et al. Efficient and complete exploitation of the bauxite residue (red mud) produced in the Bayer Process[J]. Proceedings-European Metallurgical Conference, EMC 2011, 2011, 3: 745-758.
[9] XIE L Q, ZHANG T, LV G, et al. The effect of NaOH on the direct calcification-carbonation method for processing of Bayer process red mud[J]. Green Processing and Synthesis, 2018, 7(6): 546-551.
[10] LYU F, NIU S L, WANG L, et al. Efficient removal of Pb(Ⅱ) ions from aqueous solution by modified red mud[J]. Journal of Hazardous Materials, 2021, 406: 124678.
[11] KAZAK O, TOR A. In situ preparation of magnetic hydrochar by co-hydrothermal treatment of waste vinasse with red mud and its adsorption property for Pb(Ⅱ) in aqueous solution[J]. Journal of Hazardous Materials, 2020, 393: 122391.
[12] WANG W, DING Z, CAI M H, et al. Synthesis and high-efficiency methylene blue adsorption of magnetic PAA/MnFe₂O₄ nanocomposites[J]. Applied Surface Science, 2015, 346: 348-353.
[13] LIU W C, YANG J K, XIAO B. Application of Bayer red mud for iron recovery and building material production from alumosilicate residues[J]. Journal of Hazardous Materials, 2009, 161(1): 474-478.
[14] 唐晓宁,甘霖,刘冬艳,等.赤泥还原焙烧脱铁试验研究[J].湿法冶金,2012,31(5):312-315.
TANG X N, GAN L, LIU D Y, et al. Experiment study on removal of iron from red mud by reduction roasting[J]. Hydrometallurgy of China, 2012, 31(5): 312-315 (in Chinese).
[15] LIU J, XIE Y, LI C, et al. Novel red mud/polyacrylic composites synthesized from red mud and its performance on cadmium removal from aqueous solution[J]. Journal of Chemical Technology & Biotechnology, 2020, 95(1): 213-222.
[16] DU X L, CUI S S, FANG X, et al. Adsorption of Cd(Ⅱ), Cu(Ⅱ), and Zn(Ⅱ) by granules prepared using sludge from a drinking water purification plant[J]. Journal of Environmental Chemical Engineering, 2020, 8(6): 104530.
[17] 柳晓,韩跃新,李艳军,等.山东某赤泥磁化焙烧-磁选提铁初探[J].金属矿山,2019(2):60-65.
LIU X, HAN Y X, LI Y J, et al. Primary study on magnetizing roasting-magnetic separation of red mud in Shandong[J]. Metal Mine, 2019(2): 60-65 (in Chinese).
[18] 刘江龙,郭焱,何小山,等.硅烷化赤泥的制备及其对水中铅离子吸附性能分析[J].环境工程,2019,37(11):36-44.
LIU J L, GUO Y, HE X S, et al. Preparation of silanized red mud and its adsorption properties for lead ions in water[J]. Environmental Engineering, 2019, 37(11): 36-44 (in Chinese).
[19] ZHANG L K, GUO J Y, HUANG X M, et al. Functionalized biochar-supported magnetic MnFe₂O₄ nanocomposite for the removal of Pb(Ⅱ) and Cd(Ⅱ)[J]. RSC Advances, 2019, 9(1): 365-376.
[20] CUI X Q, HAO H L, ZHANG C K, et al. Capacity and mechanisms of ammonium and cadmium sorption on different wetland-plant derived biochars[J]. Science of the Total Environment, 2016, 539: 566-575.
[21] RAJI C, ANIRUDHAN T S. Batch Cr(VI) removal by polyacrylamide-grafted sawdust: kinetics and thermodynamics[J]. Water Research, 1998, 32(12): 3772-3780.
[22] SYAFIUDDIN A, SALMIATI S, JONBI J, et al. Application of the kinetic and isotherm models for better understanding of the behaviors of silver nanoparticles adsorption onto different adsorbents[J]. Journal of Environmental Management, 2018, 218: 59-70.
[23] ZHANG L Y, ZHANG H Y, GUO W, et al. Removal of malachite green and crystal violet cationic dyes from aqueous solution using activated sintering process red mud[J]. Applied Clay Science, 2014, 93/94: 85-93.
[24] XU H, HU X J, CHEN Y H, et al. Cd(Ⅱ) and Pb(Ⅱ) absorbed on humic acid-iron-pillared bentonite: kinetics, thermodynamics and mechanism of adsorption[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2021, 612: 126005.
[25] LING L L, LIU W J, ZHANG S, et al. Magnesium oxide embedded nitrogen self-doped biochar composites: fast and high-efficiency adsorption of heavy metals in an aqueous solution[J]. Environmental Science & Technology, 2017, 51(17): 10081-10089.