Biomass And Microbial Activity In A Biofilter During
- صفحه اصلی
- Biomass And Microbial Activity In A Biofilter During
The aim of this paper is to study the microbial and structural changes occurring during the transition from flocculent (used as inoculum) to biofilm and granular sludge in a Sequencing Batch Biofilter Granular Reactor (SBBGR). SBBGR is a new and promising technology characterised by low sludge produ …
به خواندن ادامه دهید
Long-term heavy application of inorganic fertilizers is associated with a decrease in soil quality and biodiversity. Organic amendments have been reported to positively affect soil quality; however, relatively little is known regarding soil carbon (C) cycle enzyme kinetic parameters (V max and K m), community-level physiological profiles …
به خواندن ادامه دهید
For example, microbial biomass is rarely monitored during decomposition, and the dynamic interaction between biomass and system carbon (Figure 1) ... (2013) as a case study of how relationships among simultaneous measures of enzyme activities, microbial biomass, and CO 2 efflux can be useful for decomposition modeling (Figure …
به خواندن ادامه دهید
Microbial communities are altered through the soil environment by inter-root secretions. The microbial-mediated degradation of MPs is influenced by microorganisms, and this may be their secretion …
به خواندن ادامه دهید
Biofiltration has been widely used to reduce organic matter and control the formation of disinfection by-products in drinking water. Backwashing might affect the biofilters' performance and the attached microbiota on filter medium. In this study, the impacts of backwashing on the removal of dissolved organic carbon (DOC), dissolved …
به خواندن ادامه دهید
The biomass on a biofilter shows an abundance of ciliated protozoans during the cold period and where it is being replaced by bacteria and fungi during the warmer period (Le Bihan and Lessard ...
به خواندن ادامه دهید
Biofilter is one of the most important separation processes that can be employed to remove organic pollutants from air, water, and wastewater. Even though, it has been used over a century, it is still difficult to explain theoretically all the biological processes occurring in a biofilter. In this paper, the fundamental of biological processes involved in the biofilter …
به خواندن ادامه دهید
Easy enzyme tests were used to monitor the biomass activity of a trickling biological aerated filter processing a domestic influent and indicated that, under normal operation, DHA activity is related to quantity of substrate applied to the biofilter. ... plants reactor were established during the last decade, One of the main problem faced these ...
به خواندن ادامه دهید
The concentrations of soil microbial biomass carbon (MBC), microbial biomass nitrogen (MBN), and microbial biomass phosphorus (MBP) were assessed using the chloroform fumigation-extraction technique (Joergensen, 1996). In summary, for each soil sample, a portion (10 g of fresh soil) underwent chloroform fumigation at 25 °C for 24 h, while ...
به خواندن ادامه دهید
Biomass in the partial nitritation biofilter experienced a sharp decrease of about 80% due to antibiotics loading, but the biomass adapted and experienced a growth by stabilization under ...
به خواندن ادامه دهید
Over-utilization of traditional fossil fuels has caused severe energy shortages and environmental damage. The combustion products of fossil fuels, like SO 2, NO x, CO, CO 2, etc., are harmful to the environment.It is therefore necessary to develop renewable and environment-friendly energy sources [].Microbial biofuels are promising energy …
به خواندن ادامه دهید
Biomass and microbial activity in backwashing processes of a biofilter for tertiary treatment were investigated. The microbial groups revealed new distribution along the biofilter …
به خواندن ادامه دهید
We studied the relationships between earthworm activity, microbial biomass and the activation and dynamics of several enzyme activities. We carried out an experiment in which low and high rates (1.5 and 3 kg respectively) of pig slurry were applied to small scale reactors with and without earthworms …
به خواندن ادامه دهید
Marine microorganisms could provide new bioactive compounds with potential human use. Marine biomass embodies a biotechnological resource characterized by a …
به خواندن ادامه دهید
De Sanctis et al. (2010) studied the shifts in microbial community structure during the transition of biomass structure from flocculent to biofilm and granular sludge in a digester run in ...
به خواندن ادامه دهید
In this study, both DWTP active biomass and bacterial diversity showed clear temporal differences, with higher microbial activity and diversity during the dry season and lower activity and bacterial diversities during the wet season (Fig. 2 and Table 2). The temporal patterns associated with bacterial biomass and diversity in DWTPs have rarely ...
به خواندن ادامه دهید
According to the change of microorganism biomass and microbial composition with the temperature mentioned above, the disappearance of some denitrifying bacteria (band 1 and 4) and biomass decreasing of polymers degrading denitrifying bacteria (band 2 and 3) might be the main course for the deterioration of denitrification.
به خواندن ادامه دهید
The impacts of backwashing on biomass and microbial community structure of BAC biofilm were also investigated. Phospholipid fatty acid (PLFA) analysis showed that
به خواندن ادامه دهید
Biomass in the partial nitritation biofilter experienced a sharp decrease of about 80% due to antibiotics loading, but the biomass adapted and experienced a growth by stabilization under antibiotics feeding. ... were linked to the bacterial community structure of the partial-nitritation biofilter and the activity of its microbial communities ...
به خواندن ادامه دهید
From the six investigated biomass markers, ATP turned out to be a major predictor of the mean global biotransformation rate, while compound specific biotransformations were correlated with the microbial community composition. High biomass ecosystems were indicated in our systems by a dominance of Nitrospirae, but …
به خواندن ادامه دهید
Role of biological activity and biomass distribution in air biofilter performance ... The presence of sufficient biomass and microbial activity favorably influenced biofilter reacclimation after restart-up following starvation. Ó 2006 Elsevier Ltd. ... It is interesting to note that during 2-d starvation, the microbial activity was not ...
به خواندن ادامه دهید
We first show that the relationship between soil microbial biomass and diversity follows a unimodal (humped-back) pattern across global biomes (Fig. 1, Table S2).Moreover, the humped-back ...
به خواندن ادامه دهید
Whole cell microbial biosensors (WCMB) are mostly genetically modified microorganisms used to detect target molecules as indicators of biological and chemical …
به خواندن ادامه دهید
This study demonstrates how microbial ecology can contribute to the understanding of microbial dynamics during distribution of drinking water, and can help …
به خواندن ادامه دهید
A DNA-oxygen content of 31.21% was applied to estimate the dsDNA formed by microbial growth during the incubation period. O total is the total O ... Our findings of higher microbial biomass and activity in response to increasing PSR concomitant with increased belowground carbon input as evidenced by a higher root biomass carbon is in ...
به خواندن ادامه دهید
ed. The impacts of backwashing on biomass and microbial community structure of BAC biofilm were also investigated. Phospholipid fatty acid (PLFA) analysis showed that backwashing reduced nearly half of the attached biomass on granular activated carbon (GAC) particles, followed by a recovery to the pre-backwashing biomass concentration in
به خواندن ادامه دهید
The operational parameters of the partial-nitritation biofilter (effluent ammonium, nitrite and nitrate concentrations; total nitrogen removal; biomass concentration; removal efficiencies of antibiotics AZT, NOR, TMP, and SMZ) were linked to the bacterial community structure of the partial-nitritation biofilter and the activity of its …
به خواندن ادامه دهید
Plant diversity strongly influences ecosystem functions and services, such as soil carbon storage. However, the mechanisms underlying the positive plant diversity effects on soil carbon storage ...
به خواندن ادامه دهید
Biofilter injected with ozone possesses a lower pressure drop than the biofilter without injection. No change in the removal rate of toluene was noted during the biofiltration process. However, ozone exposure had avoided accumulation biomass and improved the biofilter removal rate by increasing microbial community for operation .
به خواندن ادامه دهید
The microbial metabolic activities were also observed to increase with ozone injection (Wang et al., 2009 ... Continuous injection of 200 mg/m 3 gaseous ozone did not cause any adverse effect on toluene removal of the biofilter during the 160 days of operation, while the biofilter with ozone injection had a significant decrease in filter bed ...
به خواندن ادامه دهید
It is suggested that during restoration programs, the belowground microbial activities and their biomass development and responses must be considered in implementation. It is proposed that restoration practices with mixed plant species having high biomass producing potential, can contribute to speedy recovery of lost microbial …
به خواندن ادامه دهید
A pressure meter set at the bottom of the reactor measured on-line biofilter headlosses due to biomass growth. When a fixed value of headloss was reached (i.e., 100. cm), a washing step was carried out by means of compressed air until the headloss decreased to a predefined value (i.e., 60 cm).. The washing water was collected and …
به خواندن ادامه دهید
In this study, we quantified the C:N:P stoichiometry of plant-litter-soil, soil physicochemical properties, microbial biomass, extracellular enzyme activities, and microbial metabolic limitation status during the anthropogenic transition from grassland to shrubland.
به خواندن ادامه دهید
چه بخواهید با ما کار کنید و چه علاقه مند به کسب اطلاعات بیشتر در مورد محصولات ما هستید، مایلیم از شما بشنویم.