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Tan TL, Somat HBA, Latif MABM, Rashid SA. One-pot solvothermal synthesis of Zr-based MOFs with enhanced adsorption capacity for Cu2+ ions removal. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Du Z, Chen H, Guo X, Qin L, Lin D, Huo L, Yao Y, Zhang Z. Mechanism and industrial application feasibility analysis on microwave-assisted rapid synthesis of amino-carboxyl functionalized cellulose for enhanced heavy metal removal. CHEMOSPHERE 2021; 268:128833. [PMID: 33183788 DOI: 10.1016/j.chemosphere.2020.128833] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/15/2020] [Accepted: 10/30/2020] [Indexed: 06/11/2023]
Abstract
The study presented the successful microwave-assisted (MW-assisted) preparation of a novel adsorbent derived from rice straw (RSMW-AC) and explored its adsorption performance toward heavy metal ions from water. The RSMW-AC was rapidly synthesized through pretreatment and one step grafting via the MW-assisted approach. The quantitative predictive correlations between target performance of RSMW-AC and process parameters were obtained through the response surface methodology (RSM). Meanwhile, the optimal preparation process conditions were determined: NaOH solution concentration, 20%; MW irradiation temperature for pretreatment, 100 and 150 °C; MW irradiation time for pretreatment and grafting, 10 and 60 min; EDTAD-RS mass ratio, 3. The RSMW-AC showed a good adsorption of different heavy metal ions from water (152.39, 55.46, 52.91, 35.60 and 20.11 mg g-1 for Pb(Ⅱ), Mn(Ⅱ), Cd(Ⅱ), Cu(Ⅱ) and Ni(Ⅱ), respectively). The adsorption behaviors followed the Langmuir model and pseudo second-order kinetics model with a highly significant correlation. Also of note was that amino and carboxyl groups were successfully introduced on the rice straw based on characterization results. Furthermore, preparation mechanism was explored to reveal reasons why microwave irradiation could accelerate the preparation of the adsorbent; its adsorption process was dominated by electrostatic attraction and chelation. Finally, the study made the industrial application feasibility analysis of MW-assisted approach used for pretreatment and graft reaction of agro-waste biomass.
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Affiliation(s)
- Zhaolin Du
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Fukang Road 31, Nankai District, Tianjin, 300191, China.
| | - Hongan Chen
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Fukang Road 31, Nankai District, Tianjin, 300191, China
| | - Xiaoyan Guo
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tongyan Road 38, Haihe Education Park, Jinnan District, Tianjin, 300350, China
| | - Li Qin
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Fukang Road 31, Nankai District, Tianjin, 300191, China
| | - Dasong Lin
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Fukang Road 31, Nankai District, Tianjin, 300191, China
| | - Lili Huo
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Fukang Road 31, Nankai District, Tianjin, 300191, China
| | - Yanpo Yao
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Fukang Road 31, Nankai District, Tianjin, 300191, China
| | - Zhihao Zhang
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China
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