Results 131 to 140 of about 12,786 (254)

Time response of Nitrobacter to toxicity

open access: yesEnvironment International, 1984
Abstract Nitrobacter toxicity experiments were conducted by using a mixed culture obtained from biomass on rotary biological contactors. The culture was treated with inorganic and organic toxicants, and the toxic effect was expressed in nitrite consumption. Contact time was found to be an important factor in toxic effect.
openaire   +1 more source

Influence of road salt on the biological removal of nitrogen [PDF]

open access: yesActa Montanistica Slovaca, 2007
Processes occuring in the aeration tank remove nitrogen from the organic substances in wastewater by using the bacterii. Nitrification utilize the metabolism of aerobic bacterii Nitrosomonas, Nitrococus, Nitrospira, Nitrobacter Nitrocystis a Nitrosobolus.
Eliška Horniaková, Milan Búgel
doaj  

Proses Nitrifikasi Dengan Sistem Biofilter Untuk Pengolahan Air Limbah Yang Mengandung Amoniak Konsentrasi Tinggi [PDF]

open access: yes, 2002
Limbah cair yang mengandung amoniak pada masa industrialisasi saat ini semakin banyak jumlahnya, karena semakin berkembangnya pabrik-pabrik yang memproduksi produk yang mengandung unsur nitrogen. Berdasarkan hal ini telah dilakukan penelitian dalam upaya
Marsidi, R. (Ruliasih)
core  

KHẢO SÁT MẬT ĐỘ VÀ SỰ ĐA DẠNG CỦA VI KHUẨN NITRATE HÓA TRONG AO NUÔI TÔM

open access: yesTạp chí Khoa học Đại học Cần Thơ, 2011
Kết quả nghiên cứu và thông tin về vi khuẩn chuyển hóa đạm trong ao nuôi tôm sú thâm canh hiện nay chưa nhiều. Việc nghiên cứu động thái của nhóm vi khuẩn này trong ao nuôi tôm sú thâm canh có thể giúp cho quá trình quản lý ao nuôi hiệu quả hơn. Chính vì
Phạm Thị Tuyết Ngân   +2 more
doaj  

Fluorescent antibody detection of microorganisms in terrestrial environments [PDF]

open access: yes
The fluorescent antibody technique and its use in direct microscopic examination of the soil is discussed. Feasibility analyses were made to determine if the method could be used to simultaneously observe and recognize microorganisms in the soil.
Schmidt, E. L.
core   +1 more source

Soil Environmental Factors Dominate over Nitrifier and Denitrifier Abundances in Regulating Nitrous Oxide Emissions Following Nutrient Additions in Alpine Grassland

open access: yesAgronomy
Nutrient additions including nitrogen (N) and phosphorus (P) are widely considered as an important strategy for enhancing grassland productivity. However, the effects of these nutrients additions on soil nitrous oxide (N2O) emissions and the underlying ...
Mingyuan Yin   +6 more
doaj   +1 more source

Penurunan Konsentrasi Amonia Limbah Cair Tahu Menggunakan Teknologi Biofilm – Pond Dengan Media Pipa Pvc Sarang Tawon Dan Bata Ringan Disertai Penambahan Lumpur Aktif [PDF]

open access: yes, 2014
One of the contaminants contained in the tofu wastewater is ammonia, where the aquatic life is affected by ammonia at a concentration of 1 mg/l and can cause suffocation. Therefore it require treatment of wastewater for treating tofu wastewater.
Ramdhani, R. (Ru’yat)   +2 more
core  

Microbial community composition and function in wastewater treatment plants [PDF]

open access: yes, 2002
Biological wastewater treatment has been applied for more than a century to ameliorate anthropogenic damage to the environment. But only during the last decade the use of molecular tools allowed to accurately determine the composition, and dynamics of ...
Daims, Holger   +5 more
core   +1 more source

Controlled ecological life support system - biological problems [PDF]

open access: yes
The general processes and controls associated with two distinct experimental paradigms are examined. Specific areas for research related to biotic production (food production) and biotic decomposition (waste management) are explored.
Macelroy, R. D., Moore, B., III
core   +1 more source

Evaluación de dos medios bacterianos aceleradores del proceso de nitrificación en filtros biológicos de cultivos marinos [PDF]

open access: yes, 1997
Se evalúan dos medios bacterianos aceleradores del proceso de nitrificación en un sistema de circulación de agua cerrado. Como substrato de crecimiento de las bacterias se estableció una carga de arena viva sobre filtros sernihúmedos y como productores ...
Puigcerver, Marc, Tort Bardolet, Lluís
core   +1 more source

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