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Monday, August 10, 2020 | History

2 edition of Aerobic heterotrophic biodegradation in polluted drains and sewers found in the catalog.

Aerobic heterotrophic biodegradation in polluted drains and sewers

Ye-Shi Cao

Aerobic heterotrophic biodegradation in polluted drains and sewers

the drain and sewer as dual-phase biological reactors

by Ye-Shi Cao

  • 346 Want to read
  • 13 Currently reading

Published by A.A. Balkema in Rotterdam .
Written in English

    Subjects:
  • Sewage -- Microbiology.,
  • Sewage -- Purification.,
  • Biodegradation.

  • Edition Notes

    Statementby Yi-Shi Cao.
    The Physical Object
    Paginationx, 131 :
    Number of Pages131
    ID Numbers
    Open LibraryOL18080528M
    ISBN 109054104023

    Sewer Processes: Microbial and Chemical Process Engineering of Sewer Networks, Second Edition, provides a basis for up-to-date understanding and modeling of sewer microbial and chemical processes and demonstrates how this knowledge can be applied for the design, operation, and the maintenance of wastewater collection authors add. Aerobic and Anaerobic Biodegradation This document provides an inrdepth explanation, detailing the processes of aerobic and anaerobic biodegradation. It is intended for general audiences and will provide the reader with the necessary information to understand what is happening during the biodegradation process.

    A typical biodegradation workplan can be found in Appendix A. The scope of this field guide is limited to aerobic biodegradation, also known as landfarming or land treatment, of oil-contaminated soils. It is arranged in a logical way to facilitate the decision-making process for selecting biodegradation as a remediation option. aerobic biodegradation literature for several common organic chemicals and identified biodegradation rate constants from these studies. Unlike the anaerobic biodegradation rateFile Size: KB.

      While aerobic microorganisms use oxidative reactions, the degradation by anaerobic bacteria takes place by reductive types of reactions. The oxidative sequences of aromatic and chloroaromatic compounds in aerobic bacteria yield central intermediates with a diphenolic structure. These compounds are then cleaved by enzymes that use molecular by: An organism is said to be aerobic if it can only exist in the presence of free oxygen. Heterotrophs are organisms that do not produce their own food. Therefore, aerobic heterotrophs are organisms.


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Aerobic heterotrophic biodegradation in polluted drains and sewers by Ye-Shi Cao Download PDF EPUB FB2

This test examines aerobic heterotrophic biodegradation in polluted drains and sewers, focusing on drains and sewers as dual-phase biological reactors.

Rating: (not yet rated) 0 with reviews - Be the first. Wastewater collection systems such as sewers, sewage drains, and polluted shallow aquatic systems such as rivers, streams, and lagoons are characterized by the fact that both suspended and attached biomass exist and function.

They are dual-phase by: 2. In this study, three reactors are adopted to study aerobic heterotrophic biodégradation in drains and sewers including intrinsic and process kinetics, microbial community and mathematical modelling. They are a batch reactor representing a plug flow, and the CSTR and the channel reactor representing two types of well-mixed reactor by: 2.

Aerobic heterotrophic biodegradation in polluted drains and sewers – the drain and sewer as Aerobic heterotrophic biodegradation in polluted drains and sewers book biological reactors. Doctoral Thesis, TUD/IHE, Delft, Cited by: A mathematical model with two kinetics variations was developed for the description of oxygen consumption in aerobic heterotrophic processes in longitudinal aqueous dual-phase systems where biomass is suspended in the liquid and attached on the solid material surface.

This pertains to sewers, drains, rivers and certain wastewater treatment by: 7. A well mixed indoor reciirculating channel was adopted to investigate aerobic heterotrophic biodegradation kinetics and microbial communities in drainage systems with suspended and attached biomass.

Experiments were run with synthetic by: pollution. The aim of the present study was to isolate and identify aerobic heterotrophic bacteria from brackish waters of hydrocarbon polluted Bodo creeks and to produce their biochemical, physiological and molecular characterization and identification.

The research provides updated information on the bacterial diversity of a. Cyanobacteria and associated bacteria seem to form a consortium favourable for biodegradation and clean up of polluted sites. As discussed earlier, cyanobacteria fuel the aerobic heterotrophic bacteria with oxygen and nitrogen as well as organic matter essential for their by: At salinities ranging from 60 to g.L-1 alkanes biodegradation rates were 50 – 60%, falling to less than 30% at g.L-1 (Table 1).

Even in typical hypersaline environments a negative impact on hydrocarbon biodegradation induced by increasing salinity has been reported. SRC TR FINAL REPORT Aerobic Biodegradation of Organic Chemicals in Environmental Media: A Summary of Field and Laboratory Studies Prepared by: Dallas Aronson Mario Citra Kirsten Shuler Heather Printup Philip H.

Howard Environmental Science Center Syracuse Research Corporation Running Ridge Road North Syracuse, NY Prepared. Ichor et al () studied the biodegradation of total petroleum hydrocarbon by aerobic heterotrophic bacteria from crude oil contaminated brackish waters of Bodo Creek.

During 3–10 hours of anaerobic conditions, the aerobic, heterotrophic biomass was maintained and a net production of readily biodegradable substrate originating from hydrolyzable substrate was.

A well mixed indoor recirculating channel was adopted to investigate aerobic heterotrophic biodegradation kinetics and microbial communities in drainage systems with suspended and attached biomass. Experiments were run with synthetic by:   A series of laboratory microcosm experiments and a field pilot test were performed to evaluate the potential for aerobic biodegradation of aromatic hydrocarbons and methyl tert‐butyl ether (MtBE; a common oxygenate additive in gasoline) in saline, high temperature (>30° C) r, sediment, and groundwater samples from two sites, one in Canada and another Author: Mansor Kashir, Jim Barker, Rick McGregor, Orfan Shouakar-Stash.

Aerobic biodegradation of hydrocarbons dominated thinking about the mechanisms of subsurface oil biodegradation for many ye16,37, despite conservative estimates of the water volumes needed Cited by:   In this study, enumeration and identification of total aerobic heterotrophic bacteria and petroleum-utilizing bacteria as well as the degradative potential of petroleum-utilizing bacterial isolates were carried out.

The average counts of total aerobic heterotrophic bacteria in cow dung and poultry manure were × c.f.u. g−1 and × c.f.u. g−1 by: The study of aerobic and anaerobic bioremediation of treated and raw crude polluted water samples each seeded with Aspergillus niger (fungi) and Pseudomonas aeruginosa (bacteria) has been.

The results demonstrated that integrated anaerobic-aerobic biodegradation was capable of completely degrading the seven VOCs with initial concentration of each VOC less than 30 mg/L.

Benzene and toluene were degraded within 8 days, and DCM was degraded within 20 to 27 days under aerobic conditions when initial oxygen concentrations in the Cited by: Oxygen consumption and organics decomposition in drainage systems with attached biofilm were investigated using a batch reactor.

In order to distinguish the relative contribution of suspended. Four strains of aerobic heterotrophic bacteria were isolated on crude oil with the aim to test whether their presence and activity might support the growth of cyanobacteria in oil-polluted microbial mats and whether the cyanobacterial exudates might play a role in stimulating their degradative activities.

The strains were phylogenetically related to known oil-degrading species from the genera Cited by:. Field investigations in the Zihe valley near Zibo City, China, indicated that soil is polluted with petroleum hydrocarbons at concentrations up to g/kg dry soil.

Total number microbes in polluted soil reached × microbial cells/g dry soil, and aerobic degrading bacteria concentrations of cells/g dry soil in different layers of the by: 4.the rate of aerobic bioremediation of the two polluted water samples was faster than that of anaerobic bioremediation.

With bacteria, it took 35 days for aerobic bioremediation to significantly remediate the treated crude polluted water by % and % in 45 days, while with fungi the same samples biodegraded by %.Aerobic Biodegradation.

What makes a product biodegradable? In the most basic sense, biodegradability is the ability for a product to be consumed by microorganisms. Biodegradability for the purposes of making claims (as an inherent property of the material) requires a bit more detail.