文章摘要
周文波, 田庆华, 陈亚平.玉米秸秆制备活性炭纤维及其对水中荧光素的吸附能力研究Journal of Water Resources and Water Engineering[J].,2014,25(1):173-177
玉米秸秆制备活性炭纤维及其对水中荧光素的吸附能力研究
Study on activated carbon fiber made from corn stalk and its adsorption ability to fluorescein in water
  
DOI:10.11705/j.issn.1672-643X.2014.01.038
中文关键词: 印染废水  水处理  荧光素  活性炭纤维  吸附动力学
英文关键词: dyeing waste water  water treatment  fluorescein of water  activated carbon fiber  adsorption kinetics
基金项目:四川省财政支持项目(环保类)(NO2013001-1)
Author NameAffiliation
ZHOU Wenbo1,2, TIAN Qinghua1, CHEN Yaping1 (1. 四川省环境保护科学研究院 成都 610064 2. 四川省环保科技工程有限责任公司 成都 610041) 
Hits: 1762
Download times: 1097
中文摘要:
      玉米秸秆经高温碳化为炭纤维,采用1mol/L H3PO4活化制备成活性炭纤维吸附剂,荧光素为吸附质,研究ACF吸附性能的影响因素,并对吸附机理进行了探讨。研究结果表明:碳化温度为750℃,投加量为0.2 g,pH为3时,ACF对溶液中的荧光素具有较强的吸附能力;ACF对低浓度荧光素溶液具有显著吸附效果,Langmuir方程能很好地描述等温吸附特征,吸附强度因子a为正值,表明吸附过程在本试验条件下可自发进行,根据Langmuir方程计算的理论饱和吸附量为19.608 mg/g;吸附在8 h后达到平衡,带入试验数据校对得出准二级动力学模型能更好的描述ACF对水中荧光素的吸附动力学过程。实验结果和吸附机理表明,玉米秸秆高温碳化ACF能有效处理含荧光素废水。本研究从影响因子、吸附动力学以及吸附热力学方面探讨了玉米秸秆活性炭纤维对荧光素的吸附过程,以期为吸附法处理此类废水提供理论基础。
英文摘要:
      The adsorbent was prepared from corn stalk carbon by using H3PO4 as activating agent and fluorescein was used as adsorbate. The paper studied the influence factors of adsorption ability of ACF and the adsorption mechanism. The results showed that when the carbonization temperature is 750℃,the dosage is 0.2g; the pH is 3, ACF has stronger adsorption ability on fluorescein. ACF can adsorb low concentration fluorescein better, and Langmuir isotherm can well describe the adsorption characteristic, and the value of adsorption intensity factor (a) is positive, which indicates that the adsorption process has spontaneity, the maximum amounts of ACF adsorbing fluorescein is 19.608 mg/g. The adsorption behavior reached saturated after 8h, by substituting experimental data into kinetics models, quasi-second-order kinetics model could better describe the kinetics of ACF adsorbing fluorescein. Experimental results and adsorption mechanism showed that ACF can effectively treat wastewater containing fluorescein. This research discussed the process of ACF adsorbing fluorescein from the aspects of impact factor, adsorption kinetics and thermodynamics so as to provide theoretical basis for the treatment of dye wastewater by adsorption method.
View Full Text   View/Add Comment  Download reader
Close
function PdfOpen(url){ var win="toolbar=no,location=no,directories=no,status=yes,menubar=yes,scrollbars=yes,resizable=yes"; window.open(url,"",win); } function openWin(url,w,h){ var win="toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,width=" + w + ",height=" + h; controlWindow=window.open(url,"",win); } &et=B24568AEBB6A48A1332C292AA075CD2B80C948E1D3C643B0B23FDFB511D9552907DBFC2A86109D24E3FD655867056F0C2BC55071313CA65E19B98E5938B7260A157AA61A718A5316B8DAAB95FF050AC48A2551F7054562027A4A1627C3A6E7FE92242D7AD7ED36566B553B53BD02426B&pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=3ECA06F115476E3F&jid=BC473CEDCB8CE70D7B12BDD8EA00FF44&yid=9EAD63ADE6B277ED&aid=468AD761B9A072E524D9E332E5444462&vid=&iid=CA4FD0336C81A37A&sid=DABEF202280E7EF1&eid=6425DAE0271BB751&fileno=20140138&flag=1&is_more=0">