biomass and microbial activity in a biofilter during

  • Microbial biomass and its activities in salt-affected

    Sep 27 2005 · Within the nine sites three soils (S3 S4 and S5) were the most saline. The average microbial biomass C (MBC) average basal soil respiration (BSR) and average fluorescein diacetate hydrolyzing activity (FDHA) were lowest during the summer season indicating a

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  • Impact of upstream chlorination on filter performance and

    Various microbial characterization tools were used to meet the objectives of the study (1) to quantify the amount of biomass (via ATP measurements) in chlorinated GAC and anthracite filters (2) to determine the effect of biological activity on the effluent turbidity and particle counts (3) to identify the presence and viability of FLA in the

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  • Seasonal variations of soil microbial biomass and activity

    Plant growth can be an important factor regulating seasonal variations of soil microbial biomass and activity. We investigated soil microbial biomass microbial respiration net N mineralization and soil enzyme activity in turfgrass systems of three cool-season species (tall fescue Festuca arundinacea Schreb. Kentucky bluegrass Poa pratensis L. and creeping bentgrass Agrostis palustris L

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  • CHANGES IN AMINO ACIDS ENZYME ACTIVITIES AND

    The behavior of CO2 production urease phosphatase and protease activities amino acids amino sugars bacteria and fungi was investigated during the microbial growth after the addition of a glucose-sodium nitrate solution to a red earth soil. The peak of the CO2 evolution rate preceded all other tested biochemical and microbiological criteria.

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  • CHANGES IN AMINO ACIDS ENZYME ACTIVITIES AND

    The behavior of CO2 production urease phosphatase and protease activities amino acids amino sugars bacteria and fungi was investigated during the microbial growth after the addition of a glucose-sodium nitrate solution to a red earth soil. The peak of the CO2 evolution rate preceded all other tested biochemical and microbiological criteria.

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  • Final Report Innovations in Vapor Phase Bioreactor

    As a result a supplemental control method to remove the excess biomass should be considered along with DS operation to guarantee reliable VPB operation for extended periods. A slip feed system can maintain the pollutant-degrading microbial activity in a VPB during starvation or shutdown periods.

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  • Assessment of soil quality under different tillage

    Microbial processes particularly enzyme activities play crucial functional roles in soil ecology hence serving as sensitive indicators of soil quality. We assessed the temporal dynamics of microbial biomass and selected soil enzymes (β-d-glucosidase cellobiohydrolase polyphenol oxidase urease glycine-aminopeptidase and alkaline phosphatase) during wheat cultivation under four

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  • Dissolved organic nitrogen (DON) profile during

    Jan 01 2012 · This clearly 3-stage profile of DON could be explained by three aspects as follows (1) the impact of the backwashing on the biomass and the microbial activity (2) the release of soluble microbial products (SMPs) during the biofiltration (3) the competition between heterotrophic bacteria and nitrifying bacteria.

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  • An improved biofilter to control the dissolved organic

    The improved biofilter resulted in an environment (including matrix DO and pH) suitable for microbial growth. Along the depth of the biofilter column the environment affected the microbial biomass and microbial activity and thus affected the DON concentration.

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  • MICROBIAL BIOMASS AND ACTIVITY IN LITTER DURING

    The microbial biomass represents the labile fraction of soil organic matter. Because it is highly dynamic and sensitive to soil management-related disturbances it is widely used as an indicator of soil quality (Nogueira et al. 2006 Kaschuk et al. 2010). Senescent leaf drop can modify microbial biomass and activity as can the

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  • Comparison of physical technologies for biomass control in

    treating toluene. Filter pressure drop removed dry biomass biofilter performance and microbial metabolic characteristics were analyzed to evaluate the effectiveness of the methods. Results showed that air sparging was inefficient for biomass removal (1 kg dry biomass/m3 filter) whereas

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  • Biofiltration of high concentrations of methanol vapors

    The biofilter system composed of a novel packing mixture provided an excellent support for growth and activity of methanol-degrading bacteria resulting in approximately 100 methanol removal

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  • Biomass and microbial activity in a biofilter during

    Biomass and microbial activity in backwashing processes of a biofilter for tertiary treatment were investigated. The microbial groups revealed new distribution along the biofilter depth after low

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  • An improved biofilter to control the dissolved organic

    The improved biofilter resulted in an environment (including matrix DO and pH) suitable for microbial growth. Along the depth of the biofilter column the environment affected the microbial biomass and microbial activity and thus affected the DON concentration. PMID 27259961 Indexed for MEDLINE MeSH terms. Charcoal Drinking Water/analysis

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  • Predation‐mediated shifts in size distribution of

    Predation‐mediated shifts in size distribution of microbial biomass and activity during detritus decomposition. Klaus Jürgens. Search for more papers by this author. Maria Montserrat Sala. Search for more papers by this author.

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  • Role of biological activity and biomass distribution in

    Jan 01 2007 · The effects of temporal and spatial changes in biological activity and biomass amount on biofilter performance were investigated in a lab-scale trickle-bed air biofilter at a toluene loading of 46.9 g m −3 h −1 under two different experimental strategies namely periodic backwashing at a rate of 1 h once a week and 2 d starvation. Analysis of the overall reaction for toluene metabolism

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  • Impact of upstream chlorination on filter performance and

    Various microbial characterization tools were used to meet the objectives of the study (1) to quantify the amount of biomass (via ATP measurements) in chlorinated GAC and anthracite filters (2) to determine the effect of biological activity on the effluent turbidity and particle counts (3) to identify the presence and viability of FLA in the

    Get Price
  • Microbial Structure and Functions of Biofilm During

    The microbial structure and activity of biofilm are two important parameters for the successful operation and control of fixed the nitrate reductase activity of the fixed biomass was two times higher than that of the suspended biomass during stable biofilm The biofilter was inoculated with a preliminarliy processed and adapted activated

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  • Responses of soil microbial biomass and enzyme activity to

    May 06 2020 · However in a field study during two years Zhang et al 16. have found that the application of imazethapyr (0.1 1 or 10 mg kg −1 soil) changed the content of microbial biomass

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  • An improved biofilter to control the dissolved organic

    The improved biofilter resulted in an environment (including matrix DO and pH) suitable for microbial growth. Along the depth of the biofilter column the environment affected the microbial biomass and microbial activity and thus affected the DON concentration.

    Get Price
  • BiofilterWikipedia

    Microorganisms activity is a key-factor of the process performance. The main influencing factors are the water composition the biofilter hydraulic loading the type of media the feeding strategy (percolation or submerged media) the age of the biofilm temperature aeration etc. Types of filtering media

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  • Microbial Structure and Functions of Biofilm During

    The microbial structure and activity of biofilm are two important parameters for the successful operation and control of fixed the nitrate reductase activity of the fixed biomass was two times higher than that of the suspended biomass during stable biofilm The biofilter was inoculated with a preliminarliy processed and adapted activated

    Get Price
  • CHANGES IN AMINO ACIDS ENZYME ACTIVITIES AND

    The behavior of CO2 production urease phosphatase and protease activities amino acids amino sugars bacteria and fungi was investigated during the microbial growth after the addition of a glucose-sodium nitrate solution to a red earth soil. The peak of the CO2 evolution rate preceded all other tested biochemical and microbiological criteria.

    Get Price
  • Frontiers Linking the Effect of Antibiotics on Partial

    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 microbial

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  • Responses of soil microbial biomass and enzyme activity to

    May 06 2020 · However in a field study during two years Zhang et al 16. have found that the application of imazethapyr (0.1 1 or 10 mg kg −1 soil) changed the content of microbial biomass

    Get Price
  • Metatranscriptomic exploration of microbial functioning in

    Mar 13 2019 · Total cell concentration was 2.8 10 3 cells mL −1 of cloud water i.e. 4 10 2 to 9 10 2 cells m −3 of cloud air this is at the very lower end of microbial biomass usually observed

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  • Biofilm microbial community of a thermophilic trickling

    Abstract. Molecular methods were employed to investigate the microbial community of a biofilm obtained from a thermophilic trickling biofilter reactor (TBR) that was operated long-term to produce H 2.Biomass concentration in the TBR gradually decreased as reactor bed height increased.

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  • Microbial response and elimination capacity in biofilters

    The step-feed biofilter exhibited 65 lower compression energy requirements than the standard biofilter during operation with perlite while supporting similar ECs. biomass distribution and

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  • (PDF) Biofilter in Water and Wastewater Treatment

    substances that can cause the microbial growth in the pipe lines shown no major loss of biomass during backwash of the biofilter Ahmad et al. 1 998 The biologi cal activity led to a c

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  • Response of the photosynthetic activity and biomass of the

    Meanwhile the N plus P amendment promoted higher biomass of the planktonic microbial community and the dual addition of NH 4 PO 4 yielded the highest chlorophyll a concentration. NH 4 additions provisionally promoted higher green algae than cyanobacteria biomass in the beginning while cyanobacteria dominated again with increasing NH 4 PO 4

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  • Performance enhancement of a biofilter with pH buffering

    The biofilter with CaCO 3 and 3D matrix material addition presented stable removal performance and microbial community and greater biomass density (209.9 kg biomass/m 3 filter bed) and growth rate (0.033 d-1) were obtained by using logistic equation.

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  • Biomass and microbial activity in a biofilter during

    The microbial groups revealed new distribution along the biofilter depth after low flow rate backwashing for a short time. Then the start-up process was accelerated by backwashing. The biomass profile and microbial activity profile both varying with depth before and after backwashing can be mathematically described by quadratic equations.

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  • Biomass And Microbial Activity In A Biofilter During

    Biomass And Microbial Activity In A Biofilter During. Comparison of physical technologies for biomass control in biofilters treating gaseous toluene meng-fei han can wang and hang liu.Removed dry biomass biofilter performance and microbial metabolic characteristics were analyzed to evaluate the effectiveness of the methods.Results.

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  • Sustainability Free Full-Text Biomass Growth and Its

    They use pollution as a source of nutrients energy and construction materials. Consequently the factor significantly affecting biofilter efficiency is the activity of microorganisms during the assimilation and decomposition of gaseous pollutants . The biofilm mainly consists of mixtures of bacterial and fungal cultures 7 8 . The rinsed

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  • Response of the photosynthetic activity and biomass of the

    Meanwhile the N plus P amendment promoted higher biomass of the planktonic microbial community and the dual addition of NH 4 PO 4 yielded the highest chlorophyll a concentration. NH 4 additions provisionally promoted higher green algae than cyanobacteria biomass in the beginning while cyanobacteria dominated again with increasing NH 4 PO 4

    Get Price
  • Changes in microbial biomass and microbial activity of pig

    Nov 10 2005 · Furthermore both microbial biomass and activity in pig slurry were significantly decreased by earthworm gut transit. It appears that E. eugeniae is able to digest microorganisms although the addition of glucose to the food increased respiration indicating that growth of microorganisms in casts could be limited by depletion of labile C.

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