Nitrate Reducing and Denitrifying Bacteria in Oil/Brine Contaminated Soils
نویسندگان
چکیده
منابع مشابه
Humic Acid-Oxidizing, Nitrate-Reducing Bacteria in Agricultural Soils
UNLABELLED This study demonstrates the prevalence, phylogenetic diversity, and physiology of nitrate-reducing microorganisms capable of utilizing reduced humic acids (HA) as electron donors in agricultural soils. Most probable number (MPN) enumeration of agricultural soils revealed large populations (10(4) to 10(6) cells g(-1) soil) of microorganisms capable of reducing nitrate while oxidizing ...
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The taxis response of Rhodobacter sphaeroides 2.4.1 and 2.4.3, Rhodopseudomonas palustris, and Agrobacterium tumefaciens to nitrate and nitrite was evaluated by observing the macroscopic behavior of cells suspended in soft agar and incubated under various conditions. R. sphaeroides 2.4.3, which is capable of both nitrate and nitrite reduction, showed a taxis response to both nitrate and nitrite...
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Although most PAHs with fewer than five rings are known to be biodegraded under aerobic conditions, most contaminated sediments and soils are anaerobic. In these environments, aerobic bioremediation may be difficult to implement because of the problems associated with oxygen delivery to the subsurface. With recent results clearly demonstrating some bicyclics and PAHs can be degraded without oxy...
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There has been recent concern about the impact of increased nutrient loading on the northern Everglades ecosystem. We investigated the spatial and temporal distribution of denitrifying enzyme activity (DEA) along a P-enrichment gradient in the Water Conservation Area 2A (WCA-2A) and determined the effects of added P and NO., on DEA. The DEA in soil and detritus layers was measured under anaerob...
متن کاملInfluence of carbon source on nitrate removal of contaminated groundwater in a denitrifying submerged filter.
The effectiveness of three selected carbon sources (sucrose, ethanol and methanol) on submerged filters for the removal of nitrate from contaminated groundwater (100mg NO3(-)/litre), was studied. Process yields, nitrite accumulation, biomass production and growth of denitrifying bacteria were compared. Process yields, represented as ratio C/N were 2.5, 1.08 and 1.1 for sucrose, ethanol and meth...
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ژورنال
عنوان ژورنال: Atlas Journal of Biology
سال: 2020
ISSN: 2158-9151
DOI: 10.5147/ajb.vi.211