In the study, a dual-chamber photo MFC was constructed with photosynthetic bacteria consortium PB-Z and heterotrophic nitrifier C16 as anode cathode inoculant, respectively. The electron released from starch degradation in by transferred to cathode, which utilized nitrifying realize autotrophic denitrification. Lower resistance more conducive transfer pollutants removal. Comparing natural light...

The impact of intensive land-based fish culture in Qingdao, China, on the bacterial communities in surrounding marine environment was analyzed. Culture-based studies showed that the highest counts of heterotrophic, ammonium-oxidizing, nitrifying, and nitrate-reducing bacteria were found in fish ponds and the effluent channel, with lower counts in the adjacent marine area and the lowest counts i...

The chemical and petrochemical industries produce wastewaters containing ammonium and phenolic compounds. Biological treatment of these wastewaters could be problematic due to the possible inhibitory effects exerted by phenolic compounds. The feasibility of performing simultaneous nitritation and p-nitrophenol (PNP) biodegradation using a continuous aerobic granular reactor was evaluated. A nit...

Denitrification and nitrification in sediments of Tama Estuary and Odawa Bay, Japan, were investigated by the combined use of a continuous-flow sediment-water system and a N tracer technique. At Odawa Bay, the nitrification rate was comparable to the nitrate reduction rate, and 70% of the N(2) evolved originated from nitrogenous oxides (nitrate and nitrite) which were produced by the action of ...

A Hybrid Adsorption and Biological Treatment System (HABiTS) was investigated for efficient nitrification in on-site wastewater treatment. Variable septic tank effluent loading experiments were carried out in bench-scale columns, with and without zeolite addition. Enhanced NH4-N removal (80%) was observed in the HABiTS column that combined expanded clay and clinoptilolite compared with a contro...

Scientific Events: Specialil Articles: The Rothamsted Experivental Station; First In Vase motor Representation in the Cerebral Cortex: ternational Congress of Electro-Radio-Biology; The DR. MARGARET A. KENNARD. The Presence of Federal Forest Holdings in the East; Exhibits in Nitrifying Bacteria in Deep Seas: DR. CORNELIA Physical Anthropology at the Field Museum; The L. CAREY and DR. SELMAN A. ...

Various kinds of biosensors were developed for the environmental control. Microbial sensor consisting immobilized yeasts and oxygen probe has been applied to estimation of 5-day BOD. The response time of BOD sensor was less than 20 mm and the minimum measurable BOD was 3 mg l-. Amperometric microbial sensor for ammonia was constructed with immobilized nitrifying bacteria and an oxyger probe. Th...

In this study, an approach using influent COD/N ratio reduction was employed to improve process performance and nitrification efficiency in a membrane bioreactor (MBR). Besides sludge reduction, membrane fouling alleviation was observed during 330 d operation, which was attributed to the decreased production of soluble microbial products (SMP) and efficient carbon metabolism in the autotrophic ...