Biochar (BC) was prepared from ziziphus jujuba branches using calcination and ZnCl2 activation methods to investigate the effect of different calcination temperatures on the adsorption performance of quinolone antibiotics in water,represented by moxifloxacin (MFX) and ofloxacin (OFLX).At the optimal calcination temperature of 700℃,ZnCl2-activated biochar (ZC-700) was prepared,and its physicochemical properties were characterized and analyzed.The results showed that the isothermal adsorption of ZC-700 closely fit the Langmuir model,while the kinetics conformed more to the pseudo-second-order kinetic model,indicating that the adsorption process is a chemical monolayer adsorption.At 45℃,the adsorption capacity reached 137.65 mg/g (MFX) and 135.87 mg/g (OFLX).The ZC-700 material exhibited high reusability,maintaining over 80.05% of its adsorption capacity even after five cycles of adsorption and regeneration.These findings suggest that ZC-700 can serve as a low-cost and efficient adsorbent for removing quinolone antibiotics from water.
仪器:FA-1004型分析电子天平(上海舜宇恒平科学仪器有限公司);TU-1901型紫外-可见分光光度计(北京普析通用仪器有限公司);90 Plus Zeta型电位分析仪(美国布鲁克海文仪器公司);101-4型数显鼓风干燥箱(深圳林茂科技有限公司);IRAffinity-1S型傅里叶红外光谱仪(日本岛津仪器有限公司);STA-449-F5型同步热分析仪(德国耐驰公司);Apreo-S型可变真空超高分辨场发射扫描电镜(美国赛默飞公司);PHS-3C型pH计(上海仪电科学仪器公司);ZWY-2102C型数显恒温摇床(常德高德仪器制造公司)。
PicoY, AndreuV. Fluoroquinolones in soil-risks and challenges[J]. Analytical and Bioanalytical Chemistry, 2007,387:1287-1299.
[3]
ChenG, YuY, LiangL, et al. Remediation of antibiotic wastewater by coupledphotocatalytic and persulfate oxidation system:A critical review[J]. Journal of Hazardous Materials, 2020,408:124461.
[4]
OuyangE, ZhangR, FuW, et al. Facile synthesis of bamboo biochar for efficient adsorption of quinolone antibiotics:Effects and mechanisms[J]. ACS Omega, 2024, 9(49):48618-48628.
[5]
Bar-OnY M, PhillipsR, MiloR, et al. The biomass distribution on Earth[J]. Proceedings of the National Academy of Sciences of the United States of America, 2018, 115(25):6506-6511.
[6]
GaoB, LiP, YangR, et al. Investigation of multiple adsorption mechanisms for efficient removal of ofloxacin from water using ligninbased adsorbents[J]. Scientific Reports, 2019, 9(1):637.
[7]
PengH, PanB, WuM, et al. Adsorption of ofloxacin on carbon nanotubes:Solubility,pH and cosolvent effects[J]. Journal of Hazardous Materials, 2012,211/212:342-348.
[8]
WangL, LiY, XuL, et al. Rice straw pretreatment using cow breeding wastewater for methane production[J]. Bioresource Technology, 2021,346:126657.
[9]
TanJ, HuangJ, YuanJ, et al. Novel supramolecular deep eutectic solvent-enabled in-situ lignin protection for full valorization of all components of wheat straw[J]. Bioresource Technology, 2023,388:129722,
[10]
ChiomaA O, OlubunmiO A, SamsonO O, et al. Potential application and regeneration of bamboo biochar for wastewater treatment:A review[J]. Advanced Bamboo Science, 2023,2:100012.
[11]
LianF, XingB S. Black carbon (biochar) in water/soil environments:Molecular structure,sorption,stability,and potential risk[J]. Environmental Science & Technology, 2017, 51(23):13517-13532.
[12]
LuZ, DengF, HeR, et al. A pass-through solid-phase extraction clean-up method for the determination of 11 quinolone antibiotics in chicken meat and egg samples using ultra-performance liquid chromatography tandem mass spectrometry[J]. Microchemical Journal, 2019,151:104213.
[13]
DengJ, LiX, WeiX, et al. Hybrid silicate-hydrochar composite for highly efficient removal of heavy metal and antibiotics:Coadsorption and mechanism[J]. Chemical Engineering Journal, 2020,387:124097.
[14]
HuC, JiangJ, AnY, et al. A novel self-floating silica adsorbent for antibiotic ciprofloxacin and nickel(Ⅱ) ion[J]. Chemical Engineering Journal, 2022,429:132227.
[15]
WangB, DaiX, MaY, et al. Nitrogen-rich porous biochar for highly efficient adsorption of perchlorate:Influencing factors and mechanism[J]. Journal of Environmental Chemical Engineering, 2023, 11(3):110293.
[16]
OniB A, OziegbeO, OlawoleO O. Significance of biochar application to the environment and economy[J]. Annals of Agricultural Sciences, 2019, 64(2):222-236.
[17]
WangM, LiG, HuangL, et al. Study of ciprofloxacin adsorption and regeneration of activated carbon prepared from Enteromorpha prolifera impregnated with H3PO4 and sodium benzenesulfonate[J]. Ecotoxicology and Environmental Safety, 2017,139:36-42.
[18]
ChenS, QiuL, ChengH. Carbon-based fibers for advanced electrochemical energy storage devices[J]. Chemical Reviews, 2020, 120(5):2811-2878.
[19]
KovalakovaP, CizmasL, McDonaldT J, et al. Occurrence and toxicity of antibiotics in the aquatic environment:A review[J]. Chemosphere, 2020,251:126351.
[20]
ZhouY, LiuX, XiangY, et al. Modification of biochar derived from sawdust and its application in removal of tetracycline and copper from aqueous solution:Adsorption mechanism andmodelling[J]. Bioresource Technology, 2017,245:266-273.
[21]
FuK, YueQ, GaoB, et al. Preparation,characterization and application of lignin-based activated carbon from black liquor lignin by steam activation[J]. Chemical Engineering Journal, 2013,228:740-748.
[22]
WangB, XuX, TangH, et al. Highly efficient adsorption of three antibiotics from aqueous solutions using glucose-based mesoporous carbon[J]. Applied Surface Science, 2020,528:147008.
[23]
WangY, LiuL, ChengH. Gas adsorption characterization of pore structure of organic-rich shale:Insights into contribution of organic matter to shale pore network[J]. Natural Resources Research, 2021, 30(3):2047-2063.