以粘胶基活性炭纤维(ACF)为吸附材料,通过硝酸改性得到ACF-1,对改性前后活性炭纤维吸附苯酚性能进行分析表征。结果表明:在酸性、中性和低温条件下利于活性炭纤维吸附苯酚,酸处理使活性炭纤维孔结构改变,表面含氧官能团增加。经过碱脱除再生3次后,ACF-1的吸附能力为初始吸附率的64.97%。吸附等温模型和动力学模型计算结果表明:准二级动力学模型和Langmuir吸附等温模型能够更好地描述活性炭纤维吸附苯酚过程。
Viscose-based activated carbon fiber (ACF) was used as the adsorption material and modified by nitric acid to obtain ACF-1.The adsorption performance of activated carbon fiber before and after modification was analyzed and characterized.The results showed that acidic,neutral and low temperature conditions were conducive to the adsorption of phenol by activated carbon fiber.Acid treatment changed the pore structure of activated carbon fiber,increased the surface oxygen-containing functional groups.After three times of alkali removal and regeneration,the adsorption capacity of ACF-1 was 64.97% of the initial adsorption rate.The results of adsorption isothermal model and kinetic model revealed that Langmuir adsorption isothermal model and quasi second-order kinetic model could better describe the adsorption process of phenol by activated carbon fibers.
[1] Wang R X,Du L,Gao W Q,et al.Enhanced photocatalytic performance of PdO-loaded heterostructured nanobelts to degrade phenol[J].Chemosphere,2021,276:130266.
[2] Abdolvahabpour N L,Michael S,Minoo T.Photocatalytic degradation of phenol using photodeposited Pt nanoparticles on titania[J].Journal of Nanoscience and Nanotechnology,2020,20(2):1056-1065.
[3] Shan W J,Zhang Y Y,Shu Y N,et al.Enhanced adsorption and separation of Re(Ⅶ) using organic-inorganic hybrid silica adsorbent[J].Microporous and Mesoporous Materials,2021,317:110996.
[4] Jaroslaw S,Joanna S N,Adrianna K,et al.Management of surgical mask waste to activated carbons for CO2 capture[J].Journal of CO2 Utilization,2022,59:101970.
[5] Aziz R A,Fauzi N F N,Salleh M N,et al.Removal of copper and magnesium cations from aqueous solutions by clinoptilolite zeolite adsorption[J].IOP Conference Series:Earth and Environmental Science,2021,765(1):012028.
[6] Muscarella S M,Badalucco L,Cano B,et al.Ammonium adsorption,desorption and recovery by acid and alkaline treated zeolite[J].Bioresource Technology,2021,341:125812.
[7] Behede B,Chakrabarti S,Wankhede U,et al.Review on nanoporous inorganic desiccant materials in the context of application in rotary dehumidifiers[J].Materials Today:Proceedings,2022,57:2174-2179.
[8] Yang B F,Wang C,Ji X,et al.Investigation on water vapor adsorption performance of carbon based composite adsorption material ACF-silica sol-LiCl[J].Microporous and Mesoporous Materials,2022,344:112205.
[9] Sun X,Li C L,Yu B P,et al.Removal of gaseous volatile organic compounds via vacuum ultraviolet photodegradation:review and prospect[J].Journal of Environmental Sciences,2022,125:427-442.
[10] Luo S,Liu C W,Zhou S,et al.ZnO nanorod arrays assembled on activated carbonfibers for photocatalytic degradation:characteristics and synergistic effects[J].Chemosphere,2020,261:127731.
[11] Zemskova L A,Artemyanov A P,Voit A V,et al.New composite materials based on activated carbon fibers with specific adsorption and catalytic properties[J].Materials Today:Proceedings,2018,5(12):25997-26001.
[12] Yang X Y,Li K,Wang C,et al.Cu/ACF adsorbent modified by non-thermal plasma for simultaneous adsorption-oxidation of H2S and PH3[J].Journal of Environmental Sciences,2022,127:641-651.
[13] Yue Y,Wang Y,Qu C,et al.Modification of polyacrylonitrile-based activated carbon fibers and their p-nitrophenol adsorption and degradation properties[J].Journal of Environmental Chemical Engineering,2021,9(4):105390.
[14] Choi S S,Lee J H,Jin Y M,et al.Adsorption characteristics of volatile organic compounds onto lyocell-based activated carbon fibers[J].Carbon Letters,2019,29(6):633-642.
[15] 郭雅妮,强雪妮,李海红,等.不同预处理方法对活性炭纤维结构和吸附性能的影响[J].环境工程学报,2016,10(5):2227-2232.
[16] Li M,Lu B,Ke Q F,et al.Synergetic effect between adsorption and photodegradation on nanostructured TiO2-activated carbon fiber felt porous composites for toluene removal[J].Journal of Hazardous Materials,2017,333:88-98.
[17] Wang L L,Wang X F,Zou B,et al.Preparation of carbon black from rice husk by hydrolysis,carbonization and pyrolysis[J].Bioresource Technology,2011,102(17):8220-8224.
[18] 范俊刚,李志超,王欢,等.苯酚在活性炭纤维上的吸附平衡及动力学研究[J].应用化工,2014,43(4):632-635.
[19] Hamadeen H M,Elkhatib E A.New nanostructured activated biochar for effective removal of antibiotic ciprofloxacin from wastewater:adsorption dynamics and mechanisms[J].Environmental Research,2022,210:112929.
[20] Zhang Z,Wang T,Zhang H X,et al.Adsorption of Pb(Ⅱ) and Cd(Ⅱ) by magnetic activated carbon and its mechanism[J].Science of the Total Environment,2021,757:143910.
基金资助
国家自然科学基金(51672081)
PDF
