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改性生物炭珠的制备及对磷酸盐吸附性能与机理

open access: yesGongye shui chuli
水体中磷元素含量超标会引发藻类大量繁殖,进而导致水体富营养化。为有效削减废水中磷含量,本研究以废弃物咖啡渣为原材料,采用凝胶煅烧法制备了一种易于回收的珠状生物炭材料(SA-BC)以吸附去除水中的磷酸盐。考察了吸附剂投加量、溶液pH、环境温度、共存离子对生物炭吸附磷酸盐性能的影响,分析了改性生物炭珠对磷的吸附动力学和热力学,并进一步揭示了吸附机理。结果表明,改性生物炭珠材料对磷酸盐吸附符合准二级动力学模型和Freundlich等温线模型,最大吸附容量为173.39 mg/g,在较宽的pH范围(3~12 ...
宋姿   +5 more
doaj   +4 more sources

类石墨烯生物炭去除环丙沙星的性能与机理研究

open access: yesGongye shui chuli
利用废弃咖啡渣热解制备生物炭,通过在900 ℃下将其与不同比例的碳酸钾(K2CO3)共热解成功合成了改性石墨烯状生物炭,并采用扫描电镜(Scanning electron microscopy,SEM)、比表面积及孔隙测试仪(Brunauer-emmett-teller,BET)和傅里叶变换红外光谱仪(Fourier transform infrared spectrometer,FTIR)表征其结构与表面化学性质,研究其对环丙沙星(Ciprofloxacin,CIP)的吸附特性和机制。结果表明 ...
安鹏志   +5 more
doaj   +4 more sources

ZIF-67复合咖啡渣生物炭材料吸附环丙沙星性能及机理

open access: yesGongye shui chuli
抗生素在农业和生物制药等领域的广泛应用导致其在水环境中频繁检出,已成为亟待解决的环境污染问题。本研究采用金属有机框架材料ZIF-67对咖啡渣生物炭进行改性,制备了ZIF-67@CBC复合材料,并探究了其对环丙沙星的吸附性能与作用机理。通过扫描电子显微镜、比表面积分析、傅里叶变换红外光谱、X射线光电子能谱及零电荷点测定等多种表征手段证实,该复合材料具有高比表面积(308 m2/g)、丰富的表面官能团(包括羟基和羰基)以及可调控的表面电荷特性(pHpzc=6.1)。研究了吸附剂投加量、溶液pH ...
宋姿   +7 more
doaj   +4 more sources

不同生物炭的制备及其对重金属和抗生素的吸附性能

open access: yesGongye shui chuli
选用咖啡渣、核桃壳、水葫芦和椰壳为原材料,在不同热解温度下制备生物炭,并对含Cu、Zn、土霉素(OTC)、环丙沙星(CIP)和多西环素(DOX)的模拟废水进行净化处理。结果表明,700 ℃为生物炭的最佳热解温度,水葫芦生物炭(SBC700)对单一重金属Cu和Zn的吸附效果最好,椰壳生物炭(YBC700)对单一抗生素OTC、CIP和DOX具有较强的吸附效果,4种生物炭对单一重金属或抗生素的吸附行为均为化学吸附。以水葫芦和椰壳为原材料在700 ℃下制备复合生物炭,并研究其对Cu ...
邓志华, 刘蕊, 李碧青
doaj   +2 more sources

Rheology and microstructure effects of waste spent coffee grounds in modifying asphalt binder. [PDF]

open access: yesLow Carbon Mater Green Constr, 2023
Xie M   +5 more
europepmc   +1 more source

[Correlation of type 2 diabetes and impaired glucose regulation with chronic kidney disease in middle-aged and elderly individuals]. [PDF]

open access: yesNan Fang Yi Ke Da Xue Xue Bao, 2020
Wang Q   +12 more
europepmc   +1 more source

[Expert consensus on the implementation of enhanced recovery after surgery in percutaneous endoscopic interlaminar lumbar decompression/discectomy (2020)]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2020
The Group Of Minimally Invasive Spinal Surgery And Enhanced Recovery Professional Committee Of Orthopedic Surgery And Enhanced Recovery Association Of China Rehabilitation Technology Transformation And Promotion.
europepmc   +1 more source

[EGFR-TKI ADR Management Chinese Expert Consensus]. [PDF]

open access: yesZhongguo Fei Ai Za Zhi, 2019
Chinese Society of Lung Cancer   +1 more
europepmc   +1 more source

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