耐受铅真菌的筛选及其对Pb^(2+)吸附的初步研究

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	耐受铅真菌的筛选及其对Pb^(2+)吸附的初步研究; Isolation of lead-tolerant fungus and the adsorption effect to Pb^2+
	杨亮 ; 郝瑞霞 ; 吴沣 ; 肖育雄
刊名	环境科学学报
	2012
关键词	镰刀菌属铅吸附 Fusarium sp. lead absorption
英文摘要	从铅锌矿周围土壤样品中分离、筛选出一株耐铅真菌（命名为PY）,对菌株进行了形态观察、生理生化实验及18SrRNA序列分析,并对该菌株的生物吸附性能进行了分析试验.结果表明,菌株PY为镰刀菌属（JQ267373）,该菌株在Pb2＋浓度550mg·L^-1、湿菌量10g·L^-1、pH=5.5、25℃、160r·min^-1的条件下振荡吸附75min时,对Pb2＋的吸附率可达到84%,吸附量为46.2mg·g^-1.在Pb^2＋浓度为750mg·L-1时,其吸附率为77.9%.在25℃时,菌株PY对Pb2＋的吸附模型符合Langmuir和Freundlich吸附等温方程.; A lead-tolerant fungus strain ( PY) was isolated from soil around the lead-zinc ore deposit. The morphological features,biochemical and physiological characteristics and 18S rRNA sequences of the strain were studied. Results indicated that PY belonged to Fusarium sp. ( JQ267373) . The biosorption experimental results of the strain to Pb2 + showed when Pb^2 + concentration was 550 mg·L^ - 1 ,biomass was 10 g·L^ - 1 and pH was 5. 5,the adsorption rate and adsorption capacity of the strain to Pb2 + was 84% and 46. 2 mg·g^ - 1 ,respectively,at 25 ℃ ,160 r·min^ - 1 with 75min. The adsorption rate was up to 77. 9% when Pb^2 + concentration was 750 mg·L^ - 1 . The adsorption models of strain PY to Pb^2 + at 25 ℃ were described with Langmuir and Freundlich isotherm.; 国家重点基础研究发展计划(973)项目; 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 0; 10; 2366-2374; 32
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/51192]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	杨亮,郝瑞霞,吴沣,等. 耐受铅真菌的筛选及其对Pb^(2+)吸附的初步研究, Isolation of lead-tolerant fungus and the adsorption effect to Pb^2+[J]. 环境科学学报,2012.
APA	杨亮,郝瑞霞,吴沣,&肖育雄.(2012).耐受铅真菌的筛选及其对Pb^(2+)吸附的初步研究.环境科学学报.
MLA	杨亮,et al."耐受铅真菌的筛选及其对Pb^(2+)吸附的初步研究".环境科学学报 (2012).