Effects of biochar-amended wall in a sloping farmland plot of purple soil on florfenicol transport
HE Yang1,2, TANG Xiang-yu2, ZHANG Jian-qiang1, XUAN Pan-pan2,3, XIAN Qing-song2,4
1. Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China; 2. Institute of Mountain Hazards and Environment, Chinese Academy of Science, Chengdu 610041, China; 3. College of Environment and Plant Protection, Hainan University, Hainan, 570228; 4. University of Chinese Academy of Sciences, Beijing 100049, China
Abstract：Sorption and desorption of florfenicol in a purple soil of sloping farmland and the effects of biochar amendment were investigated by laboratory batch experiment.The sorption isotherms can be well fitted by Freundlich isotherm.Permeable reactive walls with and without 5%(w/w) biochar application were constructed at the slope toes of field experimental plots,in which responses of florfenicol concentrations in surface runoff and soil water upon rainfall were monitored.At low aqueous florfenicol concentrations below 2mg/L,its sorption capacity on the purple soil was greatly enhanced by biochar amendment,and it was very likely that the sorption process in biochar-amended soil took place largely through intra-particle diffusion;on the other hand,its desorption was substantially reduced by biochar amendment.Leaching was the dominant pathway of florfenicol transport.Construction of 5%-biochar-amended permeable reactive wall can effectively reduce the leaching and lateral transport of florfenicol in deep layer of the purple soil.
Boxall A B A, Johnson P, Smith E J, et al. Uptake of veterinary medicines from soils into plants[J]. Journal of Agricultural and Food Chemistry, 2006,54(6):2288-2297.
Wei R, Ge F, Zhang L, et al. Occurrence of 13 veterinary drugs in animal manure-amended soils in Eastern China[J]. Chemosphere, 2016,144:2377-2383.
[4]
Wang H, Wang N, Wang B, et al. Antibiotics in drinking water in Shanghai and their contribution to antibiotic exposure of school children[J]. Environ Sci Technol, 2016,50(5):2692-2699.
[5]
Sorrenti G, Masiello C A, Dugan B, et al. Biochar physico-chemical properties as affected by environmental exposure[J]. Sci Total Environ, 2016,563-564:237-246.
Lehmann J, Rillig M C, Thies J, et al. Biochar effects on soil biota-A review[J]. Soil Biology & Biochemistry, 2011,43(9):1812-1836.
[8]
Guo X T, Miao Y, Yang C, et al. Sorption of tylosin on black carbon from different sources[J]. Journal of Environmental Chemical Engineering, 2016,4(3):3393-3400.
[9]
Mitchell S M, Subbiah M, Ullman J L, et al.Evaluation of 27different biochars for potential sequestration of antibiotic residues in food animal production environments[J]. Journal of Environmental Chemical Engineering, 2015,3(1):162-169.
[10]
Jia M, Wang F, Bian Y, et al. Effects of pH and metal ions on oxytetracycline sorption to maize-straw-derived biochar[J]. Bioresour Technol, 2013,136:87-93.
[11]
Teixido M, Hurtado C, Pignatello J J, et al. Predicting contaminant adsorption in black carbon (biochar)-amended soil for the veterinary antimicrobial sulfamethazine[J]. Environ. Sci. Technol., 2013,47(12):6197-6205.
[12]
Wang J, Zhu B, Zhang J B, et al. Mechanisms of soil N dynamics following long-term application of organic fertilizers to subtropical rain-fed purple soil in China[J]. Soil Biology & Biochemistry, 2015,91:222-231.
[13]
Hua K K, Zhu B, Wang X G. Dissolved organic carbon loss fluxes through runoff and sediment on sloping upland of purple soil in the Sichuan Basin[J]. Nutrient Cycling in Agroecosystems, 2014,98(2):125-135.
[14]
Khan M N, Gong Y B, Hu T X, et al. Effect of slope, rainfall intensity and mulch on erosion and infiltration under simulated rain on purple soil of south-western Sichuan Province, China[J]. Water, 2016,8(11).
[15]
Liu L, Wang Y F, Yan X W, et al. Biochar amendments increase the yield advantage of legume-based intercropping systems over monoculture[J]. Agriculture Ecosystems & Environment, 2017, 237:16-23.
[16]
Weber W J, Mcginley P M, Katz L E. A Distributed reactivity model for sorption by soils and sediments.1. conceptual basis and equilibrium assessments[J]. Environmental Science & Technology, 1992,26(10):1955-1962.
[17]
Le Page G, Gunnarsson L, Snape J, et al. Integrating human and environmental health in antibiotic risk assessment:A critical analysis of protection goals, species sensitivity and antimicrobial resistance[J]. Environment International, 2017,109:155-169.
[18]
Knabel A, Bundschuh M, Kreuzig R, et al. Runoff of veterinary pharmaceuticals from arable and grassland-A comparison between predictions from model simulations and experimental studies[J]. Agriculture Ecosystems & Environment, 2016,218:33-39.
[19]
Tahrani L, Van Loco J, Ben Mansour H, et al. Occurrence of antibiotics in pharmaceutical industrial wastewater, wastewater treatment plant and sea waters in Tunisia[J]. Journal of Water and Health, 2016,14(2):208-213.
[20]
Wei R C, Ge F, Chen M, et al. Occurrence of ciprofloxacin, enrofloxacin, and florfenicol in animal wastewater and water resources[J]. Journal of Environmental Quality, 2012,41(5):1481-1486.
[21]
Zou Y, Zheng W. Modeling manure colloid-facilitated transport of the weakly hydrophobic antibiotic florfenicol in saturated soil columns[J]. Environ. Sci. Technol., 2013,47(10):5185-5192.
