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Tri-functional lanthanum-based biochar for efficient phosphorus recovery,bacterial inhibition,and soil fertility enhancement 被引量:2
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作者 Xiuxiu Jia Xue Zhao +6 位作者 Yingtang Zhou Fan Li Wen Liu Yimin Huang Hucai Zhang Jinxing Ma Guangzhi Hu 《Biochar》 SCIE CAS CSCD 2023年第1期302-318,共17页
Excess phosphorus(P)in water can lead to eutrophication and upset ecological balance.In this study,biochar with ultrathin two-dimensional nanosheets from the natural mesocarp of shaddock was chosen as the carrier.The ... Excess phosphorus(P)in water can lead to eutrophication and upset ecological balance.In this study,biochar with ultrathin two-dimensional nanosheets from the natural mesocarp of shaddock was chosen as the carrier.The highly dispersed and small particle size of La(OH)_(3) on the surface of the nanosheets(MSBL3)was successfully achieved using chemical impregnation for the adsorption of P in aqueous solution,and the maximum adsorption capacity was 260.0 mg P g^(−1)[La].The differences in surface crystallization of La(OH)_(3) on biochar at different La loadings were analyzed using the high-precision characterization methods.After six adsorption-desorption cycles,MSBL3 retained 76.7%of its initial performance in terms of the P adsorption capacity.The preparation of 1 g of MSBL3 costs about RMB 1,and it could reduce the P concentration in 2.6 ton of Laoyu River water to below the eutrophication threshold;and the inhibitory effect of MSBL3 on the eutrophication of water bodies was confirmed by the growth state of water hyacinth.Furthermore,0.1 M MSBL3 could inhibit Escherichia coli and Staphylococcus aureus up to 98.7%and 85.0%,respectively,which indicates that MSBL3 can be used to recover P from water and also to improve water quality.In addition,the growth of the maize seedlings verified that the P-absorbed MSBL3 waste is a good soil fertilizer and can solve the problem of post-treatment of the adsorbent.In conclusion,MSBL3 prepared in this study is a promising P sorbent for application. 展开更多
关键词 Two-dimensional ordered biochar Lanthanum hydroxide phosphorus adsorbent Adsorption sludge re-planning ANTIBACTERIAL
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