中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 阳离子强度及类型对生物质炭吸附土霉素的影响 农业环境科学学报 2018 (04) 718-724
Position: Home > Articles > Effects of cation strength and species on adsorption of oxytetracycline by biochars Journal of Agro-Environment Science 2018 (04) 718-724

阳离子强度及类型对生物质炭吸附土霉素的影响

作  者：
闫聪聪;符博敏;罗吉伟;黄鹏;葛成军;俞花美
单  位：
海南大学热带农林学院资源与环境学院
关键词：
土霉素;菠萝皮渣;生物质炭;阳离子强度;阳离子类型;吸附
摘  要：
以OECD Guideline 106为基础,采用批量平衡法研究不同Ca~(2+)强度(0.01、0.03、0.05、0.08、0.1 mol·L-1)以及不同阳离子类型(0.01 mol·L-1KCl、ZnCl_2、CaCl_2、Al Cl3)对土霉素在3种菠萝皮渣生物质炭(BL350、BL500、BL650)中吸附的影响。结果表明,随着溶液中Ca~(2+)浓度的增加,土霉素在生物质炭中的吸附参数lg Kf逐渐减小趋于稳定,且lg Kf值与CaCl_2浓度之间呈显著负相关(P<0.05)。与此同时,Ca~(2+)浓度的增加对低浓度土霉素溶液的吸附影响与高浓度时相比不明显。不同阳离子条件下,Freundlich和Langmuir模型均能较好地对吸附数据进行非线性拟合,平均R2分别是0.922 1、0.946 3。除了土霉素在BL650的Al Cl3介质中1/n接近1,吸附趋于线性外,其他介质条件下的吸附等温线均呈"L"型。4种阳离子对土霉素在3种生物质炭中吸附行为的影响存在较大差异,具体表现为K+与Al3+之间存在显著差异(P<0.05),而Zn2+与K+、Al3+之间存在极显著差异(P<0.01)。与其他阳离子相比,K+的存在显著降低溶液中土霉素在生物质炭上的吸附强度(1/n)。
译  名：
Effects of cation strength and species on adsorption of oxytetracycline by biochars
作  者：
YAN Cong-cong;FU Bo-min;LUO Ji-wei;HUANG Peng;GE Cheng-jun;YU Hua-mei;College of Natural Resources and Environment, Institute of Tropical Agriculture and Forestry, Hainan University;
关键词：
oxytetracycline;;pineapple peel waste;;biochar;;cation strength;;cation species;;adsorption
摘  要：
Based on OECD Guideline 106, batch sorption methods were used to investigate the effects of calcium ion strength(i.e. 0.01,0.03, 0.05, 0.08, 0.1 mol Ca~(2+)·L-1)and different cations(0.01 mol·L-1 solution of KCl, ZnCl_2, CaCl_2, AlCl_3)on the oxytetracycline(OTC)adsorption process in pineapple residue biochars prepared at three temperatures(BL350, BL500, BL650). The results indicated that the values of the OTC adsorption coefficient lg Kfgradually decreased with increasing Ca2 +concentration in solution until reaching steady state. A significantly negative correlation existed between calcium ion strength and lg Kfvalue(P<0.05). The effects of Ca~(2+)concentration on the OTC adsorption by biochars were negligible at lower OTC concentrations compared to those at higher concentrations. Under the condition of different cations, both the Freundlich and Langmuir models were well-fitted isotherms for describing the OTC adsorption by biochars, with average fitting correlation coefficients of 0.922 1 and 0.946 3, respectively. Whereas the OTC adsorption isotherm of BL650 tended to be linear(with the value of 1/n close to 1)in 0.01 mol·L-1 Al Cl3, other isotherms were L-type curves. Different effects of different cations on the OTC adsorption by the biochars were observed. In particular, whereas a significant difference existed between K+and Al3+(P<0.05), more significant differences existed between Zn2+and K+or Al3+(P<0.01). Moreover, the presence of K+significantly reduced the adsorption strength of OTC by biochar(1/n)as compared with the presence of other cations.

相似文章

导出引用
计量
文章访问数: 8
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46