Oyster shell facilitates the green production of nitrogen-doped porous biochar from macroalgae:a case study for removing atrazine from water  

作　　者：Liying Song Hu Cheng Cuiying Liu Rongting Ji Shi Yao Huihui Cao Yi Li Yongrong Bian Xin Jiang IrminaĆwieląg-Piasecka Yang Song 

机构地区：[1]State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,No.71 East Beijing Road,Nanjing 210008,People’s Republic of China. [2]Co-Innovation Center for the Sustainable Forestry in Southern China,College of Biology and the Environment,Nanjing Forestry University,Nanjing 210037,People’s Republic of China. [3]School of Applied Meteorology,Nanjing University of Information Science and Technology,Nanjing 210044,China. [4]Nanjing Institute of Environmental Sciences,Ministry of Ecology and Environment,Nanjing 210042,People’s Republic of China. [5]Institute of Soil Science,Plant Nutrition and Environmental Protection,Wroclaw University of Environmental and Life Sciences,Grunwaldzka 53 St.,50-357 Wrocław,Poland.

出　　处：《Biochar》2024年第1期1361-1373,共13页生物炭(英文)

基　　金：supported by the National Key Research and Development Program of China(2020YFC1807003);the Strategic Priority Research Program of the Sciences(XDA28010501);the Youth Innovation Promotion Association,CAS(2021309);the National Natural Science Foundation of China(42277303).

摘　　要：Low-cost and green preparation of efficient sorbents is critical to the removal of organic contaminants during water treatment.In this study,the co-pyrolysis of macroalgae and oyster shell was designed to synthesize nitrogen-doped porous biochars for sorption removal of atrazine from water.Oyster shell played a significant role in opening pores in macroalgae-derived biochars,resulting in the surface area of the macroalgae(Enteromorpha prolifera and Ulva lactuca)and oyster shell co-pyrolyzed carbonaceous as high as 1501.80 m^(2)g^(−1)and 1067.18 m^(2)g^(−1),the pore volume reached 1.04 cm^(3)g^(−1)and 0.93 cm^(3)g^(−1),and O/C decreased to 0.09 and 0.08,respectively.The sorption capacity of atrazine to nitrogen-doped porous biochars(the Enteromorpha prolifera,Ulva lactuca and oyster shell co-pyrolyzed carbonaceous)reached 312.06 mg g^(−1)and 340.52 mg g^(−1).Pore-filling,hydrogen bonding,π-πor p-πstacking and electrostatic interaction dominated the multilayer sorption process.Moreover,the nitrogen-doped porous biochars showed great performance in cyclic reusability,and the Enteromorpha prolifera,Ulva lactuca and oyster shell co-pyrolyzed carbonaceous sorption capacity still reached 246.13 mg g^(−1)and 255.97 mg g^(−1),respectively.Thus,this study suggested that it is feasible and efficient to remove organic contaminants with the nitrogen-doped porous biochars co-pyrolyzed from macroalgae and oyster shell,providing a potential green resource utilization of aquatic wastes for environmental remediation.

关 键 词：CO-PYROLYSIS MACROALGAE Oyster shell ATRAZINE Sorption 

分 类 号：X703[环境科学与工程—环境工程]