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Jiang J, Li R, Yang K, Li Y, Deng L, Che D. Investigation on Pb 2+ adsorption characteristics by AAEMs-rich biochar in aqueous solution: Performance and mechanism. ENVIRONMENTAL RESEARCH 2023; 236:116731. [PMID: 37517492 DOI: 10.1016/j.envres.2023.116731] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/14/2023] [Accepted: 07/23/2023] [Indexed: 08/01/2023]
Abstract
Biochar derived from soybean straw with AAEMs (alkali and alkaline earth metals) enrichment could efficiently remove heavy metals from contaminated water. In this study, the influences of pyrolysis temperature on the physicochemical property and adsorption performance of soybean straw biochar were investigated. The contributions of different adsorption mechanisms were analyzed quantitatively. The results show that the soybean straw biochar exhibits excellent Pb2+ adsorption performance (157.2-227.2 mg g-1), with an order of BC800 > BC400 > BC600 > BC700 > BC500. The mechanisms of metal ion exchange (37.49%-72.58%) and precipitation with minerals (22.38%-58.03%) mainly control the Pb2+ adsorption, whereas complexation with organic functional groups (OFGs) and cation-Cπ interaction make the less contribution. The order of cation exchange capacity (CEC) is BC400 > BC800 > BC700 > BC600 > BC500, showing a high correlation (0.965) with the contribution of metal ion exchange with AAEMs. Moreover, Ca exhibits the strongest exchange capacity. The contribution of precipitation is consistent with the variation of soluble CO32- content in biochar. These results suggest that soybean straw biochar rich in AAEMs is a prospective adsorbent for Pb2+ elimination.
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Affiliation(s)
- Jiahao Jiang
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'a, 710049, China.
| | - Ruiyu Li
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'a, 710049, China; Shunde Institue of Inspection, Guangdong Institue of Special Equipment Inspection and Research, Foshan, 528300, China.
| | - Kaixuan Yang
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'a, 710049, China; Shanghai Power Equipment Research Institute Co.,Ltd., Shanghai, 200240, China.
| | - Yuhang Li
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'a, 710049, China; Xi'an Thermal Power Research Institue Co., Ltd., Xi'an, 710032, China.
| | - Lei Deng
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'a, 710049, China.
| | - Defu Che
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'a, 710049, China
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Liu W, Wang X, Zhong H, Wang Z, Yang D, Xie C, Wang E, Sui H. Risk assessment of eighteen elements leaching from ceramic tableware in China. FOOD ADDITIVES & CONTAMINANTS. PART B, SURVEILLANCE 2023; 16:209-218. [PMID: 37102322 DOI: 10.1080/19393210.2023.2202195] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 04/10/2023] [Indexed: 04/28/2023]
Abstract
Ceramic products are among the most frequently used food contact materials. Health risks associated with ceramic tableware usually arise from the migration of heavy metals. In this study, 767 pieces of ceramic tableware of different shapes and types were collected across China, and the migration levels of 18 elements were determined using inductively coupled plasma mass spectrometry. Migration tests were conducted according to the Chinese National Food Safety Standard - Ceramic Ware (GB 4806.4) with microwaveable and non-microwavable samples under different conditions. The food consumption of consumers via different shapes of ceramic tableware was obtained through a self-reported web-based survey, and the estimated dietary intakes of the studied elements were calculated accordingly. The exposure assessment showed that certain metals leached from the ceramic tableware at levels of concern. In addition, the applicability of the migration experiment conditions for microwaveable ceramic ware in GB 4806.4 needs to be further investigated.
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Affiliation(s)
- Wei Liu
- Institute of Nutrition and Food Hygiene, Beijing Center for Disease Control and Prevention, Beijing, China
- NHC Key Laboratory of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Xiuli Wang
- Laboratory of Chemical Detection, Anhui Provincial Center for Disease Control and Prevention , Hefei , China
| | - Huaining Zhong
- National Reference Laboratory for Food Contact Material (Guangdong), Guangzhou Customs Technology Center , Guangzhou , China
| | - Zhaohui Wang
- Institute of Packaging and Daily-use Chemical Testing, Beijing Products Quality Supervision and Inspection Institute , Beijing , China
| | - Daoyuan Yang
- NHC Key Laboratory of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Canghao Xie
- National Reference Laboratory for Food Contact Material (Guangdong), Guangzhou Customs Technology Center , Guangzhou , China
| | - Ee Wang
- Institute of Packaging and Daily-use Chemical Testing, Beijing Products Quality Supervision and Inspection Institute , Beijing , China
| | - Haixia Sui
- NHC Key Laboratory of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment, Beijing, China
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Ulaganathan A, Robinson JS, Rajendran S, Geevaretnam J, Pandurangan P, Durairaj S. Effect of different thermal processing methods on potentially toxic metals in the seafood, Penaeus vannamei, and the related human health risk assessment. J Food Compost Anal 2022; 105:104259. [DOI: 10.1016/j.jfca.2021.104259] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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