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SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2019, Vol. 27 ›› Issue (4): 949-964.DOI: 10.1016/j.cjche.2018.03.018

• Materials and Product Engineering • 上一篇    下一篇

Removal of lead and cadmium ions by single and binary systems using phytogenic magnetic nanoparticles functionalized by 3-marcaptopropanic acid

Imran Ali1,2, Changsheng Peng1,2,3, Iffat Naz4   

  1. 1 College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China;
    2 The Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China;
    3 School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China;
    4 Department of Biology, Qassim University, Buraidah 51452, Kingdom of Saudi Arabia(KSA)
  • 收稿日期:2018-01-31 修回日期:2018-03-13 出版日期:2019-04-28 发布日期:2019-06-14
  • 通讯作者: Changsheng Peng
  • 基金资助:
    Supported by the State Key Laboratory of Environmental Criteria and Risk Assessment (No. SKLECRA 2013FP12) and Shandong Province Key Research and Development Program (2016GSF115040). While, the first author would like to thank for the financial support by the Chinese Scholarship Council, China (CSC No:2016GXYO20). We also thank Dr. Aisha Farid, Department of English, Qassim University, for her assistance in proof reading of the paper.

Removal of lead and cadmium ions by single and binary systems using phytogenic magnetic nanoparticles functionalized by 3-marcaptopropanic acid

Imran Ali1,2, Changsheng Peng1,2,3, Iffat Naz4   

  1. 1 College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China;
    2 The Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China;
    3 School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China;
    4 Department of Biology, Qassim University, Buraidah 51452, Kingdom of Saudi Arabia(KSA)
  • Received:2018-01-31 Revised:2018-03-13 Online:2019-04-28 Published:2019-06-14
  • Contact: Changsheng Peng
  • Supported by:
    Supported by the State Key Laboratory of Environmental Criteria and Risk Assessment (No. SKLECRA 2013FP12) and Shandong Province Key Research and Development Program (2016GSF115040). While, the first author would like to thank for the financial support by the Chinese Scholarship Council, China (CSC No:2016GXYO20). We also thank Dr. Aisha Farid, Department of English, Qassim University, for her assistance in proof reading of the paper.

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摘要： The present research study is focused on green fabrication of superparamagnetic Phytogenic Magnetic Nanoparticles (PMNPs), and then its surface functionalization with 3-Mercaptopropionic acid (3-MPA). The resulting material (i.e. 3-MPA@PMNPs) characterized by FTIR, powder XRD, SEM, TEM, EDX, VSM, BET and TGA techniques and then further employed for the investigation of the adsorptive removal of lead (Pb2+) and cadmium (Cd2+) ions from aqueous solutions in single and binary systems. The material showed fastest adsorptive rate (98.23%) for Pb2+ and (96.5%) Cd2+ within the contact time of 60 min at pH 6.5 in the single system. The experimental data were fitted well to Langmuir isotherm, indicated monolayer adsorption of both metal ions onto 3-MPA@PMNPs and an estimated comparable adsorptive capacity of 68.41 mg·g-1 (Pb2+) and 79.8 mg·g-1 (Cd2+) at pH 6.5. However, kinetic data agreed well with pseudo-second-order model, and indicated that the removal mainly supported chemisorption and/or ion-exchange mechanism. Thermodynamic parameters such as ΔGo°, ΔHo°, and ΔSo°, were -3259.20, 119.35 and 20.73 for Pb2+, and -1491.10, 45.441 and 7.87 for Cd2+ at temperature 298.15 K, confirmed that adsorption was endothermic, spontaneous and favorable. The material demonstrated higher selectivity of Pb2+ and its removal efficiency was (98.20 ±0.3)% in binary system experiments. The material persisted performance up-to seven (07) consecutive treatment cycles without losing their stability and offered comparable fastest magnetic separation (35 s) from aqueous solutions. Therefore, it is recommended that the prepared material can be employed to remove toxic heavy metal ions from water/wastewaters and this "green" method can easily be implemented at large scale in low economy countries.

关键词: Green recipe, Phytogenic magnetic nanoparticles, Physical characterization of nanoparticles, Lead and cadmium ions removal

Abstract: The present research study is focused on green fabrication of superparamagnetic Phytogenic Magnetic Nanoparticles (PMNPs), and then its surface functionalization with 3-Mercaptopropionic acid (3-MPA). The resulting material (i.e. 3-MPA@PMNPs) characterized by FTIR, powder XRD, SEM, TEM, EDX, VSM, BET and TGA techniques and then further employed for the investigation of the adsorptive removal of lead (Pb2+) and cadmium (Cd2+) ions from aqueous solutions in single and binary systems. The material showed fastest adsorptive rate (98.23%) for Pb2+ and (96.5%) Cd2+ within the contact time of 60 min at pH 6.5 in the single system. The experimental data were fitted well to Langmuir isotherm, indicated monolayer adsorption of both metal ions onto 3-MPA@PMNPs and an estimated comparable adsorptive capacity of 68.41 mg·g-1 (Pb2+) and 79.8 mg·g-1 (Cd2+) at pH 6.5. However, kinetic data agreed well with pseudo-second-order model, and indicated that the removal mainly supported chemisorption and/or ion-exchange mechanism. Thermodynamic parameters such as ΔGo°, ΔHo°, and ΔSo°, were -3259.20, 119.35 and 20.73 for Pb2+, and -1491.10, 45.441 and 7.87 for Cd2+ at temperature 298.15 K, confirmed that adsorption was endothermic, spontaneous and favorable. The material demonstrated higher selectivity of Pb2+ and its removal efficiency was (98.20 ±0.3)% in binary system experiments. The material persisted performance up-to seven (07) consecutive treatment cycles without losing their stability and offered comparable fastest magnetic separation (35 s) from aqueous solutions. Therefore, it is recommended that the prepared material can be employed to remove toxic heavy metal ions from water/wastewaters and this "green" method can easily be implemented at large scale in low economy countries.

Key words: Green recipe, Phytogenic magnetic nanoparticles, Physical characterization of nanoparticles, Lead and cadmium ions removal

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