摘要
利用青霉菌等４种微生物降解鹤岗风化煤及其稀盐酸处理样，得到了显著降解效果．酸处理风化煤的降解远好于未处理的风化煤．对产物的分析结果表明，微生物的降解作用使煤样结构发生了变化；降解过程中伴随着Ｏ、Ｈ、Ｎ含量的增加，酸性官能团含量及ＦＴ－ＩＲ谱上吸收带的变化．微生物降解煤的能力来自于微生物分泌的酶及伴随而生的培养液中的碱性物质．降解过程中存在来自煤样本身的抑制作用，摇瓶加样量不宜太多．在长达３２ｄ的降解过程中，可被酸沉淀的产物浓度及产率存在一最大值．
Four strains of microorgamism are used to biodegrade the said coal and its samples treated by 5% HC1. Higher conversions and rate of biodegradation of treated samples are observed than those of untreated Hegang (HG) coal samples. The analysis of Biodegraded Products(BP) from the treated coal samples shows increase of N/C, O/C and H/C for all BP when using either penicillium waksmanni, penicillium decumbens, pseudomonas aeruginosa or pharnerocheate chrysosporium as the bioconversion microorganisms. Changes of structure are obvious in FT IR spectra when comparing the original samples with BPs. The biodegrading ability of the two penicillium strains comes from the extracellular enzymes and alkaline material appears in the culture. Coal samples exert an inhibition effect on the bioconversion of coal sample if too much of it is added to the culture in shaking flask. A proper amount of coal samples should be added to the suspension of cultured fungi. The concentration and yield of BP reach a maximum during 32 days bioconversion. Biodegradation of coal by penicillium waksmanni can reduce the alcoholic hydroxy group in BP compared with original coal samples. Products from ATHG (acid treated HG) by PW have been analyzed by 13 C NMR.
出处
《大连理工大学学报》
CAS
CSCD
北大核心
1996年第4期434-438,共5页
Journal of Dalian University of Technology
基金
辽宁省博士起动基金
