INVESTIGATIONS ON NICKEL BIOSORPTION AND ITS REMOBILIZATION

被引:19
作者
ASTHANA, RK [1 ]
CHATTERJEE, S [1 ]
SINGH, SP [1 ]
机构
[1] BANARAS HINDU UNIV, CTR ADV STUDY BOT, VARANASI 221005, UTTAR PRADESH, INDIA
关键词
D O I
10.1016/0032-9592(94)00065-P
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Immobilized preparations of the bacteria (Pseudomonas aeruginosa and Rhodopseudomonas BHU strain I) and the cyanobacterium (Anacystis nidulans) exhibited significant Ni adsorption in the order 91%, 72%, 75%, respectively, within 2 h contact with aqueous NiCl2(7.05 mu g Ni/0.1 mg biomass). The immobilizing agent (Ca-alginate, 1.5%, w/v) absorbed move Ni (43%) than the exopolysaccharide of cyanobacteria, Rivularia sp. (40%) or Aphanothece sp. (30%). Ni remobilization from different adsorbed systems was maximum (84%) for Ca(NO3)(2), over NaCl (4.3%) at equimolar concentrations (12 mM, each). Extracts from forest soil (organic C, 2-3%) were more effective in N remobilization (22.65%) than similar preparations from garden soil (18%) with organic C in the range of 0.98-1.1%.
引用
收藏
页码:729 / 734
页数:6
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