biomass and microbial activity in a biofilter during

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CiteSeerX Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Abstract: 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 flow rate backwashing for a short time. Then the startup process was accelerated by backwashing.

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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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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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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, indiing that growth of microorganisms in casts could be limited by depletion of labile C.

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Biomass and microbial activity in a biofilter during

Biomass and microbial activity in a biofilter are two critical parameters, which determine the reactor''s performance in water treatment (Liu et al., 2001), and have become the focus of interest in the scientific community due to the development of modern analytical techniques. Boifilms are of two types: active biofilms and inactive ones.

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Simulation of Biomass Accumulation Pattern in VaporPhase

Abstract Existence of inert biomass and its impact on biomass accumulation patterns and biofilter performance were investigated. Four biofilters were set up in parallel to treat gaseous toluene. Each biofilter operated under different inlet toluene loadings for 100 days. Two microbial growth models, one with an inert biomass assumption and the other without, were established and compared.

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Biofilter in water and wastewater treatment SpringerLink

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 is critically reviewed

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Linking the Effect of Antibiotics on PartialNitritation

The operational parameters of the partialnitritation 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 partialnitritation biofilter and the activity of its microbial

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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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Effect of Microbial Biomass and Humic Acids on Abiotic and

Magnetite (Fe3O4) is an environmentally ubiquitous mixedvalent iron (Fe) mineral, which can form via biotic or abiotic transformation of Fe(III) (oxyhydr)oxides such as ferrihydrite (Fh). It is currently unclear whether environmentally relevant biogenic Fh from Fe(II)oxidizing bacteria, containing cellderived organic matter, can transform to magnetite. We compared abiotic and biotic

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Microbial biomass and activity under oxic and anoxic

Jan 31, 2006 · Soil microbial activity, biomass, and community structure were examined during the transition from oxic to anoxic conditions after the addition of glucose and with or without nitrate addition. In two sets of treatments, samples were incubated for up to 35 d in closed ampoules either aerobically until oxygen was depleted or anoxically throughout

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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 managementrelated disturbances, it is widely used as an indior 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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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, indiing that growth of microorganisms in casts could be limited by depletion of labile C.

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Responses of soil microbial biomass and enzyme activity to

Responses of soil microbial biomass and enzyme activity to herbicides imazethapyr and umioxazin Mariane pertile1, Jadson Emanuel Lopes Antunes1, fabio fernando Araujo2, Lucas William Mendes3, Paul J. Van den Brink 4,5 & Ademir Srgio ferreira Araujo1 The use of herbicides is important for controlling weeds in crops.

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(PDF) Microbial activity in granular activated carbon

This microbial biomass reduced the pore space in the highly clogged parts of the filters by at least 7%, whereas the reduction due to particle deposition was not larger than 7%.

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Microbial activity in biofilter used as a pretreatment for

Jan 15, 2013 · This apart, the microbial activities in the biofilters were measured in terms of concentration of active biomass (adenosine triphosphate ATP) and total cell count. Biofouling potential in biofilter effluents were assessed in terms of transparent exopolymer particles (TEP) and assimilable organic carbon (AOC) concentration.

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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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Microbial abolic activities are naturally selected by

Jul 10, 2015 · During the simulation of a glucose anaerobic fermentation ecosystem, a multistage microbial conversion from glucose to methane (involving

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The Conversion of Abandoned Chestnut Forests to Managed

2 days ago · The higher WSOC amount might explain the greatest amount of microbial biomass in the A horizon of NCFL. Furthermore, the microbial biomass harboring in the A horizon of NCFL has also shown both a better C use efficiency and a larger soil organic carbon immobilization in the microbial biomass

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Microbial response and elimination capacity in biofilters

The stepfeed 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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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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Response of microbial community structure and metabolic

The effects of inlet VOCs (Volatile Organic Compounds) shifts on microbial community structure in a biofiltration system were investigated. A labscale biofilter was set up to treat eight VOCs sequentially. Short declines in removal efficiency appeared after VOCs shifts and then later recovered. The number of OTUs in the biofilter declined from 690 to 312 over time.

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Biofilter Wikipedia

Microorganisms'' activity is a keyfactor 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 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 managementrelated disturbances, it is widely used as an indior 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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Performance evaluation and microbial community analysis of

May 01, 2020 · These results indied that the microorganisms in the fillers formed a unique structure in the evolution of microbial community, and the rapid readaptation of the biofilter could contribute to the activity retention of its biomass during the starvation period. Download : Download highres image (116KB) Download : Download fullsize image Fig. 7.

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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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Linking the Effect of Antibiotics on PartialNitritation

The operational parameters of the partialnitritation 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 partialnitritation biofilter and the activity of its microbial

Get price

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

Assessment of Combustion and Gasifiion Behavior in a

During the storage of biogenic materials for energy utilization, destructions by microbial attacks are inevitable. Besides material degradation, selfignition of wood chip piles also occurs consistently. Treating the feedstock with, for example, mineral additives such as Dolomite can inhibit the microbial destructions, though such treatment may affect the thermochemical conversion of the fuel

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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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Effects of Plant Residue Decomposition on Soil N

Soil mineral N, microbial biomass, and βglucosidase activity increased under all treatments, with T. diversifolia having the greatest effect. While N mineralization occurred in all of the species throughout the experiment, an initial N immobilization was recorded in the A. zygia, B. nitida, A. auriculiformis, and Z. mays treatments for up to

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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 managementrelated disturbances, it is widely used as an indior of soil quality (Nogueira et al., 2006 Kaschuk et al., 2010). Senescent leaf drop can modify microbial biomass and activity, as can the

Get price

CiteSeerX

CiteSeerX Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Abstract: 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 flow rate backwashing for a short time. Then the startup process was accelerated by backwashing.

Get price

Assessment of Combustion and Gasifiion Behavior in a

During the storage of biogenic materials for energy utilization, destructions by microbial attacks are inevitable. Besides material degradation, selfignition of wood chip piles also occurs consistently. Treating the feedstock with, for example, mineral additives such as Dolomite can inhibit the microbial destructions, though such treatment may affect the thermochemical conversion of the fuel

Get price

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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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 startup 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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Microbial response and elimination capacity in biofilters

The stepfeed biofilter exhibited 65% lower compression energy requirements than the standard biofilter during operation with perlite, while supporting similar ECs. biomass distribution and

Get price

Performance evaluation and microbial community analysis of

May 01, 2020 · These results indied that the microorganisms in the fillers formed a unique structure in the evolution of microbial community, and the rapid readaptation of the biofilter could contribute to the activity retention of its biomass during the starvation period. Download : Download highres image (116KB) Download : Download fullsize image Fig. 7.

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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 glucosesodium 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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Soil microbial C:N ratio is a robust indior of soil

Oct 14, 2016 · The soil microbial biomass carbon (SMB C), nitrogen (SMB N) and phosphorus (SMB P) constitute 1–7% of soil organic carbon (SOC), 1–5% of total soil nitrogen (TSN) and 1–5% of total soil

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Development of Two Biomass Control Strategies for Extended

For stable longterm continuous operation of highly loaded trickle bed air biofilters, the prevention of plugging due to accumulating biomass is essential for avoiding biofilter failure. Two biomass control strategies were evaluated to maintain high VOC removal efficiencies at high toluene loadings for over 200 days. A sustained toluene removal efficiency of over 99% was achieved. Backwashing

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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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CompostBased Biofilters Control Air Pollution BioCycle

Jan 30, 2004 · Each biofilter device must contain a community of microorganisms growing in the airwater interface or biofilm, which is capable of biodegrading the pollutant compounds found in the air stream. The products of this bio oxidation/biodegradation process are carbon dioxide, water, mineral salts and microbial biomass.

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Microbial community characterization, activity analysis

Apr 01, 2013 · The consumption rate of DO was slow but rose steadily over 19 days, from the date of biofilm culturing, then fluctuated greatly until day 28, before finally settling at around 18%. 2.2 Steady state of biofilter 2.2.1 Microbial biomass and activity HPC, LipidP and TTCDHA in the biofilter were assessed in order to explore the biomass and

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(PDF) Microbial activity in granular activated carbon

This microbial biomass reduced the pore space in the highly clogged parts of the filters by at least 7%, whereas the reduction due to particle deposition was not larger than 7%.

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