microbial monitor Articles

  • Microbial indicators, pathogens and methods for their monitoring in water environment

    Water is critical for life, but many people do not have access to clean and safe drinking water and die because of waterborne diseases. The analysis of drinking water for the presence of indicator microorganisms is key to determining microbiological quality and public health safety. However, drinking water-related illness outbreaks are still occurring worldwide. Moreover, different indicator ...


    By IWA Publishing

  • ABS Innate Microbial Enhancer

    Anaerobic digestion facilities is recognized by the United Nations Development Program as one of the most useful decentralized sources of energy supply, as they are less capital intensive than large power-plants. The technical expertise required to maintain anaerobic digesters coupled with high equipment cost lower process efficiencies have so far limited the level of its industrial application ...

  • Water quality monitoring in wetland ecosystems using microbial model communities

    This study reviews the concept of model communities for water quality assessment in aquatic ecosystems. The feeding habits of protozoans were used to unite species into functional, trophic groups. Colonising communities were dominated by bacterivorous Flagellate Species (Sf). A new Index of Periphyton Flagellates (IPF) as an indicator of the trophic status of a water-body was developed. ...


    By Inderscience Publishers

  • Calibration of a passive, in situ, integrative sampler for monitoring of microbial biotoxins in aquatic environments

    In this work, an integrative passive sampler based on a silicone membrane filled with a suspension of γ-Fe2O3 at pH 3.5 was developed. The novel device was calibrated for the measurement of microcystin concentrations in water. Laboratory calibration studies of the passive sampling devises under controlled conditions of temperature, water turbulence, and analyte concentration were ...


    By IWA Publishing

  • Microbial Biodiversity Detection And Monitoring Using Molecular Biology Tools

    Micro-organisms are responsible for the most biogeochemical cycles that shape the environment of earth and its oceans. So far, only part of these organisms has been well studied, especially those living on earth and more considered from an anthropogenic perspective, e.g causing human diseases or providing useful products and services. Further the inability to generate pure culture has hampered ...


  • Microbial fuel cell-based biosensors for environmental monitoring: a review

    The microbial fuel cell (MFC) is an innovative technology that was initially designed to harness energy from organic waste using microorganisms. It is striking how many promising applications beyond energy production have been explored in recent decades. In particular, MFC-based biosensors are considered to be the next generation biosensing technology for environmental monitoring. This review ...


    By IWA Publishing

  • A New Microbial Contact Assay for Marine Sediments

    The number of microbiological contact tests for marine sediments is low, although microorganisms enable a rapid screening and monitoring of sediment quality and a high resolution of hazard assessment. As no single biotest can provide reliable answers concerning the potential hazard of environmental samples, a combination of bioassays needs to be applied to serve this purpose. In order to cover ...


  • Comparison of microbial activity in anaerobic and microaerobic digesters

    Microaerobic alternative of anaerobic digestion offers many advantages especially when sulfide concentration in the digester is high. For better understanding of the microaerobic technology more detailed characterization of biomass activity is needed. Two equal digesters were operated under the same condition except of microaeration in one of them. During long term operation of anaerobic and ...


    By IWA Publishing

  • Hand-pumps as reservoirs for microbial contamination of well water

    The retention and release of total coliforms and Escherichia coli was investigated in hand-pumps removed from tubewells tapping a faecally contaminated aquifer in Matlab, Bangladesh, and from a new hand-pump deliberately spiked with E. coli. All hand-pumps were connected to reservoirs of sterile water and flushed. Faecal coliforms were observed in the discharge from all three of ...


    By IWA Publishing

  • On-line monitoring of active biomass concentration in wastewater treatment plant using a potentiometric microbial biosensor

    A conductometric method was developed for the quantification of microbial biomass, required for monitoring the operational condition of wastewater treatment plant. The conductometric microbial biomass measurement has been shown to be reproducible with respect to the data obtained over a ...

  • Potential applications of next generation DNA sequencing of 16S rRNA gene amplicons in microbial water quality monitoring

    The applicability of next generation DNA sequencing (NGS) methods for water quality assessment has so far not been broadly investigated. This study set out to evaluate the potential of an NGS-based approach in a complex catchment with importance for drinking water abstraction. In this multi-compartment investigation, total bacterial communities in water, faeces, soil, and sediment samples were ...


    By IWA Publishing

  • Real-time Total Microbial Measurement For Water Distribution Systems

    A well-managed water distribution system is essential for maintaining a healthy water supply. The World Health Organization, the directing and coordinating authority on health (World Health Organization, 2008), has compiled the Water Safety Plan which reflects this. With over 2.3 million deaths per year caused by water born diseases (Davidson, et al., 2005), safeguarding water systems is of ...


    By LuminUltra Technologies Ltd.

  • Practical applications of quantitative microbial risk assessment (QMRA) for water safety plans

    The absence of indicator organisms in drinking water does not provide sufficient guarantee for microbial safety. Therefore the water utilities are implementing water safety plans (WSP) to safeguard drinking water quality. Quantitative microbial risk assessment (QMRA) can be used to provide objective quantitative input for the WSP. This study presents several applications of treatment modelling in ...


    By IWA Publishing

  • Seasonal variation in the microbial quality of shallow groundwater in the Kathmandu Valley, Nepal

    To develop effective groundwater pollution control strategies for the Kathmandu Valley, Nepal, seasonal variations in microbial quality and their underlying mechanisms must be understood. However, to date, there are no studies that address these topics. In this study, groundwater samples from dug wells were collected during the dry and wet seasons from 2009 to 2012, and Escherichia coli ...


    By IWA Publishing

  • Effect of the addition of rice straw on microbial community in a sewage sludge digester

    Rice straw was added to a sewage sludge digester and its effects on methane production, dewatering characteristics, and microbial communities in the digested sludge were examined by a continuous digestion experiment under mesophilic conditions (35 °C). Stable gas generation was monitored in all digestion experiments. Methane yield from raw sludge, chopped rice straw and softened rice ...


    By IWA Publishing

  • Removal and relationships of microbial indicators in a water treatment and reclamation facility

    A wastewater treatment and reclamation facility in north-east Spain was monitored over 1 year to determine the occurrence and concentrations of different microbial indicators (Escherichia coli, fecal enterococci, somatic bacteriophages and spores of sulfite-reducing clostridia). The removal of the indicators and its relationships through the wastewater treatment and reclamation trains were ...


    By IWA Publishing

  • Impact of operating history on mixed culture fermentation microbial ecology and product mixture

    Mixed culture fermentation is an alternative to pure culture fermentation for production of biofuels and valuable products. A glucose-fed, continuous reactor was operated cyclically to a central pH of 5.5 from a number of precedent pHs, from 4.5 to 7.5. At each pH, stable chemical production was reached after 2 retention times and was held for least 2 further retention times prior to the next ...


    By IWA Publishing

  • Water quality and microbial diversity in cisterns from semiarid areas in Brazil

    Harvesting rainwater is a common practice worldwide, particularly in areas with no access to a public water supply or insufficient groundwater reserves. More than two million people living in semiarid regions of Brazil consume rainwater stored in cisterns, and little information is available regarding the water quality. Despite the initial good quality of the rainwater, its harvest and storage ...


    By IWA Publishing

  • Opportunities for microbial electrochemistry in municipal wastewater treatment – an overview

    Microbial bioelectrochemical systems (BESs) utilize living microorganisms to drive oxidation and reduction reactions at solid electrodes. BESs could potentially be used at municipal wastewater treatment plants (WWTPs) to recover the energy content of organic matter, to produce chemicals useful at the site, or to monitor and control biological treatment processes. In this paper, we review ...


    By IWA Publishing

  • Microbial water quality of recreational lakes near Tbilisi, Georgia

    Microbial safety of recreational water is one of the major human public health issues in developing countries. Three water bodies, the Tbilisi Sea, Kumisi and Lisi lakes, in the South Caucasus region near Tbilisi, Georgia, were monitored in 2006–2009 to determine microbiological quality using standard methods. Microbial pollution indicators were determined in parallel with phytoplankton ...


    By IWA Publishing

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