生物炭/过硫酸盐对沼液碳氮组分变化的影响

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中图分类号：S216.4 文献标志码：A 文章编号：1672-2043（2025）07-1902-08

doi：10.11654/jaes.2024-0699

Effects of biochar/persulfate on changes of carbon and nitrogen components in biogas slurry

I Shiqi1²，LIU Xin1， KONG Fanjing1， YANG Zhimin1²，CHEN Yucheng1，2* （1.CollgeofesourcesandEnviromentalSiences，SouthwestUniversityChonging4O16，China;2.ChongqingEing ResearchCenterofuralCeanerroductio，KeyboratoryofAgiclturalSoilliRiskotrolofEcoEviroentaliual Land， Chongqing ， China）

Abstract：Inodertoivesgatetefectofocharpersulfateonmineralizatiooforganicaterindiferetmleuarwehtagead sedgerminationindexinbiogassluy，iochar/persulfateoxidationtestserecarrdout.Theresultsshowedtatcompadwiththe original biogas slurry treatment， the addition of 1.8g⋅L-1 potassium persulfate and 2.0 g⋅L-1 biochar could maintain the total nitrogen concentration of biogas slurry and significantly increase the dissolved organic nitrogen concentration by 82.20%（187.43mg⋅L-1） . The content of particulate organic matter 35.77mg⋅L-1. ）was decreased by 59.11% ，and the germination index was increased by 46.17% Importanceanalysisshowedthatoxidatontieanddisoledorganicmattwithmolecularweightlessthan1OkDawere themainfactors affecting bioavailabilityofbiogassluyandtheirrelativeimportance wasO.29andO.18，respectively.Theresultsshowedthat 1.8g⋅L-1 potassium persulfate and 2.0g⋅L-1 biochar could efficiently mineralize refractory organic mater，improve seed germination index，and reduce stable time ofbiogas slury，which could provide theoretical basis for the safe utilization ofbiogas slurry.

Keywords：biogas slurry; biochar/persulfate; carbon and nitrogen components; seed germination index

随着规模化养殖业的快速发展，畜禽养殖数量大幅增加，导致大量粪便的产生。（剩余16837字）