2024年国际生物多样性日主题是“参与部分计划”(Be part of the Plan),号召世界上的每一个人尽己所能参与支持生物多样性。日前,广东环境保护工程职业学院的生物多样性团队在广东惠州莲花山脉发现新物种“莲峰角蟾”,得到众多新闻关注...2024年国际生物多样性日主题是“参与部分计划”(Be part of the Plan),号召世界上的每一个人尽己所能参与支持生物多样性。日前,广东环境保护工程职业学院的生物多样性团队在广东惠州莲花山脉发现新物种“莲峰角蟾”,得到众多新闻关注。在2024年国际生物多样性日即将到来之际,让我们走进这个生物多样性团队,探访发现背后的故事以及他们坚守的初心,了解生物多样性研究团队的工作、成果和保护生物多样性的意义。期待大家在春日赏花,夏日听蝉,秋日观枫,冬日踏雪之时,感念生物多样性的美好。展开更多
The mechanism of removing phosphate by MSWI(municipal solid waste incineration)fly ash was investigated by SEM(scanning electron microscopy)with EDS(energy dispersion spectrum),XRD(X-ray diffraction),FT-IR(Fourier tra...The mechanism of removing phosphate by MSWI(municipal solid waste incineration)fly ash was investigated by SEM(scanning electron microscopy)with EDS(energy dispersion spectrum),XRD(X-ray diffraction),FT-IR(Fourier transform infrared spectroscopy),BET(specific surface area),and BJH(pore size distribution).The results indicate that the removal rate of phosphate(100 mg/L)in 50 mL phosphorus wastewater reaches at 99.9% as the dosage of MSWI fly ash being 0.9000 g under room temperature.The specific surface area of MSWI fly ash is less than 6.1 m2/g and the total pore volume is below 0.021 cm3/g,suggesting that the absorption capacity of calcite is too weak to play an important role in phosphate removal.SEM images show that drastic changes had taken place on its specific surface shape after reaction,and EDS tests indicate that some phosphate precipitates are formed and attached onto MSWI fly ash particles.Chemical precipitation is the main manner of phosphate removal and the main reaction is: 3Ca2++2 PO4 3-+xH2O→Ca3(PO4)2↓·xH2O.Besides,XRD tests show that the composition of MSWI fly ash is complex,but CaSO4 is likely to be the main source of Ca2+.The soluble heavy metals in MSWI fly ash are stabilized by phosphate.展开更多
文摘2024年国际生物多样性日主题是“参与部分计划”(Be part of the Plan),号召世界上的每一个人尽己所能参与支持生物多样性。日前,广东环境保护工程职业学院的生物多样性团队在广东惠州莲花山脉发现新物种“莲峰角蟾”,得到众多新闻关注。在2024年国际生物多样性日即将到来之际,让我们走进这个生物多样性团队,探访发现背后的故事以及他们坚守的初心,了解生物多样性研究团队的工作、成果和保护生物多样性的意义。期待大家在春日赏花,夏日听蝉,秋日观枫,冬日踏雪之时,感念生物多样性的美好。
基金Projects(51108100,50808184)supported by the National Natural Science Foundation of ChinaProject(100Z007)supported by the Ministry of Education of China+1 种基金Project(200103YB020)supported by Foundation of Guangxi Educational Committee,ChinaProject supported by Guangxi Normal University Education Development Foundation for Young Scholars,China
文摘The mechanism of removing phosphate by MSWI(municipal solid waste incineration)fly ash was investigated by SEM(scanning electron microscopy)with EDS(energy dispersion spectrum),XRD(X-ray diffraction),FT-IR(Fourier transform infrared spectroscopy),BET(specific surface area),and BJH(pore size distribution).The results indicate that the removal rate of phosphate(100 mg/L)in 50 mL phosphorus wastewater reaches at 99.9% as the dosage of MSWI fly ash being 0.9000 g under room temperature.The specific surface area of MSWI fly ash is less than 6.1 m2/g and the total pore volume is below 0.021 cm3/g,suggesting that the absorption capacity of calcite is too weak to play an important role in phosphate removal.SEM images show that drastic changes had taken place on its specific surface shape after reaction,and EDS tests indicate that some phosphate precipitates are formed and attached onto MSWI fly ash particles.Chemical precipitation is the main manner of phosphate removal and the main reaction is: 3Ca2++2 PO4 3-+xH2O→Ca3(PO4)2↓·xH2O.Besides,XRD tests show that the composition of MSWI fly ash is complex,but CaSO4 is likely to be the main source of Ca2+.The soluble heavy metals in MSWI fly ash are stabilized by phosphate.
