棉秆与污泥共热解制备生物炭工艺优化及其结构与吸附性能

随着经济的发展,产量巨大的棉秆与污泥亟需找到新的资源化方式。该研究利用污泥与棉秆共热解制备炭,采用正交试验法全面考察与分析了各因素对污泥-棉秆炭吸附性能以及表面结构的影响。结果表明,污泥质量分数、KOH浓度、微波功率、辐照时间以及装填量均会显著影响污泥-棉秆炭的吸附性能、表面官能团以及孔结构。优化工艺参数为：污泥质量分数30%,微波功率280 W,辐照时间24 min,KOH质量分数50%,装填量150 g,在该工艺条件可制备获得综合吸附性能较优的污泥-棉秆炭,其亚甲基蓝、酸性品红、硫酸铜以及碘的吸附值分别达到157.80、293.39、272.12、1 281.93 mg/g。污泥-棉秆炭的...

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Bibliographic Details
Published in农业工程学报 Vol. 32; no. 24; pp. 248 - 254
Main Author 邓辉 李政家 金志文 张涛
Format Journal Article
LanguageChinese
Published 新疆兵团化工绿色过程重点实验室/石河子大学化学化工学院,石河子,832003 2016
Subjects
KOH活化-微波热解法
吸附性能
废弃物
棉秆炭
污泥
生物质
表面结构
表面结构
biomass
wastes
adsorption capacity
structure properties
棉秆炭
污泥
废弃物
吸附性能
KOH活化-微波热解法
cotton stalk chars
生物质
sludges
potassium hydrate activation-microwave pyrolysis method
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ISSN1002-6819
DOI10.11975/j.issn.1002-6819.2016.24.033

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Summary:随着经济的发展,产量巨大的棉秆与污泥亟需找到新的资源化方式。该研究利用污泥与棉秆共热解制备炭,采用正交试验法全面考察与分析了各因素对污泥-棉秆炭吸附性能以及表面结构的影响。结果表明,污泥质量分数、KOH浓度、微波功率、辐照时间以及装填量均会显著影响污泥-棉秆炭的吸附性能、表面官能团以及孔结构。优化工艺参数为：污泥质量分数30%,微波功率280 W,辐照时间24 min,KOH质量分数50%,装填量150 g,在该工艺条件可制备获得综合吸附性能较优的污泥-棉秆炭,其亚甲基蓝、酸性品红、硫酸铜以及碘的吸附值分别达到157.80、293.39、272.12、1 281.93 mg/g。污泥-棉秆炭的吸附性能可达到或超过国家木质净水用活性炭一级品的标准,但吸附质与炭的结构特性均会影响其吸附性能。酸性官能团总量与孔容分别与酸性品红吸附值及硫酸铜吸附值显著相关,其他结构参数与吸附性能相关性不显著,污泥-棉秆炭对污染物的吸附并不只是单一的物理吸附或化学吸附。该研究结果对于定向设计高效的棉秆-污泥炭基吸附剂具有参考价值。
Bibliography:11-2047/S
wastes; sludges; biomass; cotton stalk chars; adsorption capacity; potassium hydrate activation-microwave pyrolysis method; structure properties
Deng Hui, Li Zhengjia, Jin Zhiwen, Zhang Tao （The Key Laboratory for Green Processing of Chemical Engineering, Xinjiang Production and Construction Corps~School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China）
The production of sludge and cotton stalk arise along with the rapid development of China＇s economy.Currently the most common methods for sludge and cotton stalk disposal are landfilling,incineration,and application in land in China.And incineration of cotton stalk may bring new air pollution problems; it may contaminate soils and ground water when sludge is used in land as fertilizer.Therefore,it is necessary to find an efficient way for the sludge and cotton stalk recycling.As alternative technology for the common sludge and cotton stalk treatment methods,the pyrolysis has been researched.But there are few researches on
ISSN:1002-6819
DOI:10.11975/j.issn.1002-6819.2016.24.033