小麦秸秆生物炭对四环素的吸附特性研究
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摘要
在300、450、600℃下制备了小麦秸秆生物炭(XM300、XM450、XM600),并进行了表征,研究了生物炭对水中四环素(TC)的吸附机理。结果表明,随热解温度的升高,生物炭比表面积与孔容积增加,孔径变小。准2级动力学方程和Langmuir等温模型更适合描述生物炭对TC的吸附,表明该吸附过程主要是受2种以上因素共同影响的单分子层吸附,生物炭对TC的吸附容量顺序为q(XM600)>q(XM450)>q(XM300)。颗粒内扩散方程拟合发现生物炭对TC的吸附包括快速外扩散与缓慢内扩散2个过程。pH影响了生物炭与TC之间的静电作用及π-π电子供体受体相互作用,导致吸附容量先减小后增大,在pH=9.02时最大。阳离子与TC之间的竞争作用导致生物炭对TC的吸附容量略有减小。
Wheat stalk biochars(XM300, XM450, XM600) were prepared under 300, 450 and 600 ℃ respectively and characterized, the adsorption mechanism of tetracycline(TC) was investigated. The results showed that the specific surface area and pore volume of biochars increased with increasing of pyrolysis temperature, while the pore size as decreased. The second order kinetics equation and the Langmuir isothermal model were more suitable to describe the adsorption of TC on biochars, which indicated that the adsorption process was single layer adsorption and affected by more than one factor.The adsorption capacity order of TC on biochars was q(XM600)>q(XM450)>q(XM300). The results of intra-particle model showed that there were two separate stages in TC adsorption on biochars, which were external diffusion and inter-particle diffusion. The adsorption capacity of TC on biochars decreased firstly and then increased due to the pH affected the electrostatic interaction and π-π electron donor acceptor interaction between biochar and TC. The maximum adsorption capacity of TC on biochars was found at pH was 9.02. The competition between cations and TC results in a slight decrease in the adsorption capacity of TC on biochars.
Wheat stalk biochars(XM300, XM450, XM600) were prepared under 300, 450 and 600 ℃ respectively and characterized, the adsorption mechanism of tetracycline(TC) was investigated. The results showed that the specific surface area and pore volume of biochars increased with increasing of pyrolysis temperature, while the pore size as decreased. The second order kinetics equation and the Langmuir isothermal model were more suitable to describe the adsorption of TC on biochars, which indicated that the adsorption process was single layer adsorption and affected by more than one factor.The adsorption capacity order of TC on biochars was q(XM600)>q(XM450)>q(XM300). The results of intra-particle model showed that there were two separate stages in TC adsorption on biochars, which were external diffusion and inter-particle diffusion. The adsorption capacity of TC on biochars decreased firstly and then increased due to the pH affected the electrostatic interaction and π-π electron donor acceptor interaction between biochar and TC. The maximum adsorption capacity of TC on biochars was found at pH was 9.02. The competition between cations and TC results in a slight decrease in the adsorption capacity of TC on biochars.
引文
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[27]林珈羽,张越,刘沅,等.不同原料和炭化温度下制备的生物炭结构及性质[J].环境工程学报,2016,10(6):3200-3206.
[28]RECHBERGER M V,KLOSS S,RENNHOFER H,et al.Changes in biochar physical and chemical properties:Accelerated biochar aging in an acidic soil[J].Carbon,2017,115:209-219.
[29]YU F,LI S,ZHOU Y,et al.Biosorbents based on agricultural wastes for ionic liquid removal:An approach to agricultural wastes management[J].Chemosphere,2016,165:94-99.
[30]黄雯,陈佼,张建强,等.玉米芯基和羊粪基生物炭对亚甲基蓝的吸附特性[J].水处理技术,2018,44(4):74-80.
[31]武庭瑄,周敏,郭宏栋.四环素在黄土中的吸附行为[J].环境科学学报,2008,28:2311-2314.
[32]LIAN F,SONG Z,LIU Z,et al.Mechanistic understanding of tetracycline sorption on waste tire powder and its chars as affected by Cu2+and p H[J].Environmental Pollution,2013,178(1),264-270.
[2]吴英,周明良,张波,等.嘉兴市主要旅游景区地表水中四环素和磺胺类抗生素抗性基因的污染现状调查[J].环境保护与循环经济,2016,36:52-54.
[3]郎朗,狄静波,王戈,等.哈尔滨市蔬菜基地四环素类抗生素的污染现状[J].环境科学与技术,2018,41(8):153-159.
[4]CHEN H,GAO B,LI H,et al.Functionalization,p H,and ionic strength influenced sorption of sulfamethoxazole on graphene[J].Journal of Environmental Chemical Engineering,2014,2(1):310-315.
[5]INYANG M,GAO B,ZIMMERMAN A,et al.Sorption and cosorption of lead and sulfapyridine on carbon nanotube-modified biochars[J].Environmental Science&Pollution Research,2015,22(3):1868-1876.
[6]谭珍珍,张学杨,骆俊鹏,等.玉米秸秆生物炭对诺氟沙星的吸附影响因素[J].安全与环境学报,2018,18(6):1265-1271.
[7]NAIRI V,MEDDA L,MONDUZZI M,et al.Adsorption and release of ampicillin antibiotic from ordered mesoporous silica[J].Journal of Colloid&Interface Science,2017,497:217-225.
[8]TANG J,ZONG L,MU B,et al.Attapulgite/carbon composites as a recyclable adsorbent for antibiotics removal[J].Korean Journal of chemical Engineering,2018,35(8):1-12.
[9]TAN X,LIU Y,ZENG G,et al.Application of biochar for the removal of pollutants from aqueous solutions[J].Chemosphere,2015,125:70-85.
[10]王忠科,李刚,王格格,等.污泥-锯末共热解生物炭的制备及土壤应用[J].现代化工,2017(1):147-150.
[11]陶术平,向速林,桑文静,等.生物炭对土壤重金属影响研究进展[J].现代化工,2017(1):45-49.
[12]ZHANG X,GAO B,ZHENG Y,et al.Biochar for volatile organic compound(VOC)removal:Sorption performance and governing mechanisms[J].Bioresource Technology,2017,245:606-614.
[13]WANG M,ZHU Y,CHENG L,et al.Review on utilization of biochar for metal-contaminated soil and sediment remediation[J].Journal of Environmental Sciences,2018,63(1):156-173.
[14]ZHANG X,GAO B,CREAMER A E,et al.Adsorption of VOCs onto engineered carbon materials:A review[J].Journal of Hazardous Materials,2017,338:102-123.
[15]董珊珊,窦森.玉米秸秆不同还田方式对黑土有机碳组成和结构特征的影响[J].农业环境科学学报,2017,36(2):322-328.
[16]左静,陈德,郭虎,等.小麦秸秆生物质炭对旱地土壤铅镉有效性及小麦、玉米吸收的影响[J].农业环境科学学报,2017,36(6):1133-1140.
[17]马锋锋,赵保卫,刁静茹.小麦秸秆生物炭对水中Cd2+的吸附特性研究[J].中国环境科学,2017,37(2):551-559.
[18]张如玉,刘海波,邹雪华,等.小麦秸秆驱动菱铁矿热解制备磁性生物质碳及其吸附Cd2+活性[J].环境科学,2017,38(8):3519-3528.
[19]朱司航,赵晶晶,楚龙港,等.纳米羟基磷灰石改性生物炭对铜的吸附性能研究[J].农业环境科学学报,2017,36(10):2092-2098.
[20]李仁英,吴洪生,黄利东,等.不同来源生物炭对土壤磷吸附解吸的影响[J].土壤通报,2017(6):1398-1403.
[21]左昊,徐康宁,孟萍萍,等.硫酸改性小麦秸秆生物炭对氨氮吸附特性研究[J].应用化工,2017,46(7):1237-1242.
[22]高欢,韦安磊,郑晓青,等.小麦秸秆生物炭对水中对羟基苯甲酸乙酯的吸附特性[J].环境科学学报,2017,37(7):2667-2679.
[23]武丽君,王朝旭,张峰,等.玉米秸秆和玉米芯生物炭对水溶液中无机氮的吸附性能[J].中国环境科学,2016,36(1):74-81.
[24]CHEN T,LUO L,DENG S,et al.Sorption of tetracycline on H3PO4modified biochar derived from rice straw and swine manure[J].Bioresource Technology,2018,267:431-437.
[25]潘萌娇,孙姣,贺强,等.热解终温和加热速率对棉杆热解生物炭的影响研究[J].河北工业大学学报,2014,43(5):60-68.
[26]简敏菲,高凯芳,余厚平.不同裂解温度对水稻秸秆制备生物炭及其特性的影响[J].环境科学学报,2016,36(5):1757-1765.
[27]林珈羽,张越,刘沅,等.不同原料和炭化温度下制备的生物炭结构及性质[J].环境工程学报,2016,10(6):3200-3206.
[28]RECHBERGER M V,KLOSS S,RENNHOFER H,et al.Changes in biochar physical and chemical properties:Accelerated biochar aging in an acidic soil[J].Carbon,2017,115:209-219.
[29]YU F,LI S,ZHOU Y,et al.Biosorbents based on agricultural wastes for ionic liquid removal:An approach to agricultural wastes management[J].Chemosphere,2016,165:94-99.
[30]黄雯,陈佼,张建强,等.玉米芯基和羊粪基生物炭对亚甲基蓝的吸附特性[J].水处理技术,2018,44(4):74-80.
[31]武庭瑄,周敏,郭宏栋.四环素在黄土中的吸附行为[J].环境科学学报,2008,28:2311-2314.
[32]LIAN F,SONG Z,LIU Z,et al.Mechanistic understanding of tetracycline sorption on waste tire powder and its chars as affected by Cu2+and p H[J].Environmental Pollution,2013,178(1),264-270.