磷酸改性炭制备及对中性红的吸附机理研究

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中图分类号：X703

文章编号：1674-6139（2025）07-0077-05

文献标志码：B

Preparation of Phosphoric Acid Modified Carbon and Adsorption Mechanism ofNeutral Red

Zhao Guangnan’，Li Xiaoyue 2 ，WuDedong²，Xiao Pengfei 2 ，PanBaoyuan 3 （1.Harbin Vocational & Technical College，Harbin 150081，China; 2.Northeast Forestry University，Harbin 150O40，China； 3.Heilongjiang Academy of Environmental Science，Harbin 15oo90，China）

Abstract：Inthestudy，phosphoricacidwasutilizedasamodifertoenhancethedecolorizationateofneutraledonactiatedca bon，whichseredastheresponsevariable.Teadsorptionmechanismofneutralredasanalyzedthoughadsoptionkineticsadthead sorptionsothermmodelofphosphoricacid-modifiedcarbonfortreatingsimulatedwastewatercontainingeutralred.Thersultsndicated thattheoptimal preparationconditions forthe modified material wereas folows：aphosphoricacidconcentrationof 2.5% ，Mcarbon ：V phosphoric acid ratio of1：5O，and an impregnation time of 2 hours.The decolorization rate of 30mg/L neutral red was found to be （20 82.57% ．Furthermore，the phosphoric acid -modified carbon exhibited an adsorption capacity of 14. 54mg/g when it absorbed （20 100mg/L neutraledfor90minutes，indicatingitsgoodperformanceinelectrostaticandmulti-layeradsorptiondominatedbyphysical difusion.This suggests its potential use in treating wastewater containing dyes.

Keywords：activated carbon;impregnation method；decolorizationrate；adsorption mechanism

前言

随着纺织工业的发展，大量合成染料被利用于生产中，产生大量染料废水。（剩余5314字）