Simultaneous removal of microplastics and doxycycline and preparation of novel hollow carbon nanocakes by pyrolysis

Liu, Yuzhi1; Li, Bing1; Li, Ruili2; Ji, Haodong2; Song, Lan3; Zhu, Xiaoshan1; Jing, Lu1; Liu, Xiaoning4; Huang, Yuefei1; Wu, Xiaofeng1

2023-09-15

10.1016/j.cej.2023.144999

CHEMICAL ENGINEERING JOURNAL   影响因子和分区

1385-8947

1873-3212

Microplastics (MPs) pose a significant challenge in terms of their safe disposal and effective utilization. This study aimed to address this issue by employing coagulation and pyrolysis to achieve the simultaneous removal of MPs and doxycycline (DC). Through the addition of nano micro-electrolysis material (nMET) prior to poly ferric sulfate (PS) and polyacrylamide (PAM) coagulation, 92% of DC and 96% of MPs in wastewater were successfully removed. The resulting product from this process is a new type of hollow carbon nanocakes (HCNCs) obtained through pyrolysis. Characterization of the HCNCs reveals that they consist of amorphous carbon, ferric oxide, and zero-valent iron, with a diameter, thickness, specific surface area, and ID/IG of approximately 350 nm, 50 nm, 54.37 m2g  1, and 0.92, respectively. The cavity structure of the HCNCs is formed during the pyrolysis process as CO2 escapes between interstitial compounds. This research not only expands the potential applications of nMET in the environmental field but also presents a method for producing new iron-carbon materials by utilizing waste MPs.

Microplastics Nano micro-electrolytic materials Coagulation Pyrolysis Hollow carbon nano cakes

SCI ; EI

英语

其他

Scientific Research Startup Funds of Tsinghua Shenzhen International Graduate School[QD2021017C] ; National Natural Science Foundation of China[51908296] ; Tsinghua SIGS Cross Research Innovation Fund[JC2022019]

Engineering

Engineering, Environmental ; Engineering, Chemical

WOS:001052737300001

ELSEVIER SCIENCE SA

20233614690092

Amorphous carbon ; Iron ; Iron oxides ; Microplastic ; Pyrolysis ; Sulfur compounds ; Wastewater disposal

Industrial Wastes Treatment and Disposal:452.4 ; Water Pollution:453 ; Environmental Impact and Protection:454.2 ; Ecology and Ecosystems:454.3 ; Iron:545.1 ; Chemical Reactions:802.2 ; Chemical Operations:802.3 ; Inorganic Compounds:804.2 ; Amorphous Solids:933.2

ENGINEERING

Web of Science

1.Tsinghua Univ, Water Res Ctr, Tsinghua Shenzhen Int Grad Sch, Shenzhen 518055, Peoples R China
2.Peking Univ, Sch Environm & Energy, Shenzhen Grad Sch, Shenzhen, Peoples R China
3.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China
4.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn Sc, Wuhan 430072, Peoples R China

Liu, Yuzhi,Li, Bing,Li, Ruili,et al. Simultaneous removal of microplastics and doxycycline and preparation of novel hollow carbon nanocakes by pyrolysis[J]. CHEMICAL ENGINEERING JOURNAL,2023,472.

Liu, Yuzhi.,Li, Bing.,Li, Ruili.,Ji, Haodong.,Song, Lan.,...&Wu, Xiaofeng.(2023).Simultaneous removal of microplastics and doxycycline and preparation of novel hollow carbon nanocakes by pyrolysis.CHEMICAL ENGINEERING JOURNAL,472.

Liu, Yuzhi,et al."Simultaneous removal of microplastics and doxycycline and preparation of novel hollow carbon nanocakes by pyrolysis".CHEMICAL ENGINEERING JOURNAL 472(2023).