fermentation off-gas monitoring Articles

  • QIC-Biostream - exhaust gas analysis of small scale fermenters

    Summary The application of the Hiden QIC-Biostream gas analysis system is to monitor the off-gas and vapours from up to 80 small scale fermenters for yield optimisation and process screening. Introduction Biotechnology is an extremely important area for the 21st century and information relating to yield of a product is crucial to most Biotech ...


    By Hiden Analytical

  • Sorbitol-fermenting Bifidobacteria are indicators of very recent human faecal pollution in streams and groundwater habitats in urban tropical lowlands

    Sorbitol-fermenting Bifidobacteria (SFB) proved to be an excellent indicator of very recent human faecal pollution (hours to days) in the investigated tropical stream and groundwater habitats. SFB were recovered from human faeces and sources potentially contaminated with human excreta. SFB were undetectable in animal faeces and environmental samples not contaminated with human faeces. Microcosm ...


    By IWA Publishing

  • Monitoring of digesters in biogas plants

    Renewable sources of energy are gaining steadily in importance. Leading the way is the use of methane gas obtained from fermentation processes in biogas plants. Overloading such plants with excessive biomass may have drastic economic consequences and may even inactivate the biomass, necessitating a cost-intensive restart. Adding too little biomass also has financial consequences, as less ...


  • Case study - Biogas monitoring for upgraded biomethane

    By working with a range of partners worldwide, Geotech is involved in a range of projects at the cutting edge of biogas production and processing.  The recent landmark deal agreed between Marks & Spencer (M&S) and Future Biogas, a major biogas plant operator, is for the purchase of biomethane certificates. The deal sees M&S purchase 35,000 Mega-Watt hours (Mwh) of certificates, ...


    By Geotech

  • CO2 Monitor For Breweries: Carbon Dioxide Safety and How to Stay Safe

    Carbon dioxide is a necessary byproduct of the brewing process, yet too much CO2 can be dangerous to employee health. In Germany, two workers died at the same brewery in 2012 due to hazardous levels of CO2 present in beer mixing and pressure tanks. Learn more about how CO2 levels can get out of control during the beer brewing process and ways to protect your staff from this deadly gas.  ...

  • Why a CO2 monitor may be needed? Where carbon dioxide leaks occur

    Do you work with carbon dioxide (or CO2) in your industry? If so, then you may need a carbon dioxide monitor to check for gas leaks that could pose a hazard to your workplace safety. Learn common scenarios where carbon dioxide can leak and see how a CO2 detector can minimize your risk.  Industries Where CO2 Monitors Can Make a ...

  • Treatment plant protected by effluent monitor at major drinks factory

    The installation of a BioTector continuous TOC (Total Organic Carbon) monitor to police the front end of Cobevco’s wastewater treatment plant has enabled tight control of the treatment process. Delivering results 20 times faster than laboratory techniques, the monitor at the Elton facility in Cheshire provides advance notice of organic overload so that the plant is able to instantly divert ...


  • Specificity of a defined substrate method used to monitor balneability of tropical coastal waters impacted by polluted stormwater

    Defined substrate (DS) is an alternative technique to monitoring the water quality based on species-specific enzyme activity. Although more sensitive and more specific than traditional media, there is some controversy over use in the warmer waters of tropical and subtropical environments, rich in organic matter and microorganism groups capable of interfering with results. The aim of this study ...


    By IWA Publishing

  • Gas safety in confined spaces

    An engineer repairs buried cables; a plant manager enters a small plant room; a contractor inspects the lining of a sewage pipe.  All these personnel face a common danger, despite working in widely different industries.  Gas-related injury poses a serious threat in any confined space where the free movement of air is limited.  ...

  • Gas Safety in Confined Spaces

    Introduction An offshore worker ensures a vessel is safe to enter; a plant manager enters a small plant room; a contractor inspects the lining of a sewage pipe.  All these personnel face common dangers, despite working in widely different industries.  Gas-related injury poses a serious threat in any confined space where the free movement of air is limited. A confined space ...

  • CO2 Gas Hazards in the Brewing Industry

    The hazards associated with CO2 in the brewing industry are well known, yet people still die needlessly every year in tragic and completely avoidable accidents in breweries. Just last year in Germany, which has a good safety record, two workers died in separate incidents at the same brewery. In the first incident, the owner was found dead with his head and torso in a beer mixing tank. It is ...

  • Case study - China Resources Gas Group Ltd

    Anaerobic fermentation project with waste water in Qidong Jiangsu Province, China.  The purification project was set up in order to connect the biogas to the city’s gas pipeline. The customer’s challenge Biogas upgrading: the Group aims to make use of what would ordinarily be a by-product – waste water.  Gas is extracted from a water treatment process, ...


    By Geotech

  • Greene King Brewery gas leak – carbon dioxide in breweries

    On Thursday 15 October 2015, a carbon dioxide leak occurred at the Greene King Brewery on an estate in Bury St Edmunds in Suffolk. Emergency services were sent to the incident and nearby residents were evacuated as a precaution. Twenty people were rescued from the building, and the incident was quickly taken control of. ...


    By Analox Sensor Technology

  • Dreyer & Bosse deliver renewable energy CHP project to Sofia in Bulgaria

    The Sofia council decided to invest in renewable energy to make use of the many tons of biowaste (vegetative material),  20,000 tons per annum, from the waste removal collections that take place daily in Sofia and surrounding area. To make this possible it was decided to go for wet fermentation where the substrate or raw material ferments and the biogas is collected. After three weeks the ...

  • Latest analytical technology ensures biogas efficiency

    Anaerobic Digestion (AD) relies on the ability of specific micro-organisms to convert organic material into a gas that can be used to generate electricity. However, these bacteria require specific conditions if they are to function effectively and instrumentation specialist company HACH LANGE has developed a range of online, portable and laboratory instruments that have enabled a large number of ...


  • Largest Hofstetter Installation

    Type     HOFGAS®- LPM 7000  Commissioning     2003 Site     Landfill Pinto (ES) SituationOne of the Europe’s largest landfill sites is located in the Pinto region, south of Madrid, where a modern waste treatment and energy recovery system is currently being developed. Urbaser S. A. is implementing a new plant ...


    By Hofstetter BV

  • Start up study of UASB reactor treating press mud for biohydrogen production

    Anaerobic digestion of press mud mixed with water for biohydrogen production was performed in continuous fed UASB bioreactor for 120 days. Experiment was conducted by maintaining constant HRT of 30 h and the volume of biohydrogen evolved daily was monitored. Various parameters like COD, VFA, Alkalinity, EC, Volatile solids, pH with respect to biohydrogen production were monitored at regular ...

  • Revisiting the Karlovac Brewery Incident

    As a gas monitoring company, we have been made aware of many tragic incidents concerning gas leaks. One of the most obscure and tragic is the incident which happened at the former Karlovac Brewery in Karlovac, Croatia in 2007. Karlovac Brewery (Karlovačka pivovara) was founded in 1854 and is one of Croatia’s most famous breweries, brewing national ...


    By Analox Sensor Technology

  • Case study - Optimising biogas generation in the UK and Germany

    Methane makes money. It generates energy revenues, carbon credits and is part of bio-treatment sludge processing. In most of the world it has only just begun. Measuring what we are doing and being responsible with this potentially damaging greenhouse gas makes good sense. With gas production for revenue, measurement is essential. While landfill gas analysis has been required for compliance with ...


    By Geotech

  • A multi-parameter analyzer helps a Kentucky treatment plant step up to the plate and meet a new phosphorus limit in its permit

    In 2001, the Lexington Fayette Urban County Government West Hickman Creek Wastewater Treatment Plant in Nicholasville, Ky., was starting Phase II of its third upgrade since 1972, when the state imposed a phosphorus limit. Total phosphorus hovered around 6 mg/l, but the permit required 1 mg/l monthly average and 2 mg/l daily maximum from May through October. Engineers from Tetra-Tech, the ...

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