laboratory fermenter Articles

  • Effect of pH control strategies and substrate concentration on the hydrogen yield from fermentative hydrogen production in large laboratory-scale

    A series of batch experiments investigating two different pH control strategies, initial pH adjustment and continuous pH control, have been carried out in large laboratory-scale reactors with working volumes of 30 L. In both cases, pH was varied between 5 and 7.5. Sucrose concentrations were also varied starting from 0 up to 30 g/L. Higher hydrogen production yields can be achieved by batch ...


    By IWA Publishing

  • Recycling Waste Products from Molasses Fermentation: CSR Distilleries

    CSR’s Sarina ethanol distillery has changed from an environmental pariah in the local community into a welcome industry. Through a world-first plant design, it has reduced steam and water consumption, improved plant productivity and product quality, and turned a pollutant into a saleable, import-replacing product. Instead of closing down in the face of community opposition to its environmental ...


  • Conversion of sewage sludge to commodity chemicals via syngas fermentation

    Gasification of sewage sludge allows the recovery of energy, and produces a mix of CO, CO2 and H2 called synthesis gas (or syngas), which can be fermented by acetogenic bacteria to added-value products. This work presents the conversion of syngas to organic acids and alcohols using both pure and mixed cultures. Pure culture kinetic experiments with Clostridium ...


    By IWA Publishing

  • Microbial community analysis during continuous fermentation of thermally hydrolysed waste activated sludge

    Acidogenic fermentation of thermally hydrolysed waste activated sludge was carried out at laboratory scale in two reactors operated under different hydraulic retention times (HRT). Process performance was assessed in terms of volatile fatty acid (VFA) composition and yield. The diversity of the microbial population was investigated by constructing a 16S rRNA gene library and subsequent ...


    By IWA Publishing

  • Laboratory tests describing the biological reactivity of pretreated residual wastes

    In Austria as well as in Germany, several ideas have been put forward on how to describe the biological activity of waste. Gas-generation potential, respiration activity and analysis of material groups ('Stoffgruppenanalysen' according to Van Soest, 1963) and eluate parameters like TOC, NH4-N, COD and BOD were discussed. The use of the Incubation Test (developed by the Department of Waste ...


    By ORBIT e.V.

  • Polyhydroxyalkanoate (PHA) production from sludge and municipal wastewater treatment

    Polyhydroxyalkanoates (PHAs) are biodegradable polyesters with comparable properties to some petroleum-based polyolefins. PHA production can be achieved in open, mixed microbial cultures and thereby coupled to wastewater and solid residual treatment. In this context, waste organic matter is utilised as a carbon source in activated sludge biological treatment for biopolymer synthesis. Within the ...


    By IWA Publishing

  • The generation of Acetones and Ketones - a positive process?

    A look back at an in-depth study regarding an in-situ chemical treatment, which employed a fermentation process - and exceeded a laboratory's expectations. When an impacted aquifer is amend¬ed with carbon, or heated, a small por¬tion of the ferment¬able organic matter may be converted to a variety of ketones, including acetone or methyl ethyl ketone (MEK; 2-buta-nonc). 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 ...


  • The Effects of pH on Enhanced Reductive Dechlorination: Growth vs. Activity

    This past May at the International Symposium on In-Situ and On-Site Bioremediation sponsored by Battelle, I attended a session entitled “Microbial Ecology of Reductive Dechlorination and the pH Impact.” The presentation contained fascinating information about a seemingly well understood parameter, pH. Although a relatively simple parameter, the effect of pH on enhanced reductive dechlorination ...


    By REGENESIS

  • Amino acid analysis matrix independent analysis of free amino acids

    Pickering Laboratories specializes in manufacturing of cationexchange columns and eluants for amino acid analysis. No other techniques have been shown to match the reproducibility and sensitivity of this post-column methodology. Advantages of this method, such as absence of matrix interferences, are especially important in analysis of native samples. Pickering provides several options for the ...


    By Pickering Laboratories, Inc.

  • Comparison of aerobic granulation and anaerobic membrane bioreactor technologies for winery wastewater treatment

    An anaerobic membrane bioreactor and aerobic granulation technologies were tested at laboratory scale to treat winery wastewater, which is characterised by a high and variable biodegradable organic load. Both technologies have already been tested for alcohol fermentation wastewaters, but there is a lack of data relating to their application to winery wastewater treatment. The anaerobic membrane ...


    By IWA Publishing

  • The Missing Link in Bacteria TMDLs: Natural Growth

    INTRODUCTIONFecal indicator bacteria (FIB), including total coliform, fecal coliform (or E. coli), and Enterococcus, have long been used to indicate the contamination of fecal matters in beaches, streams, and lakes (USEPA, 1986, 2002). When the bacterial concentration in a waterbody exceeds the FIB water quality criteria, the waterbody may be identified on the Clean Water Act Section 303(d) list ...

  • Whay sanitation solved FOG problems

    CASE HISTORY: Mr. Henery Whay of 1 Whay Sanitation Company1740 Irvington Road Weems, VA 22576 (804 435 0945). Reports the following results. Background: Whay Sanitation Company operates a large septic collection facility to break down septic and restaurant grease trap waste (30,000 gallons/day). They have been an AquaClean user for several years however recently developed a ...


    By BluePlanet Labs

  • New Report - Global Biotechnology Market Analysis. Share, Size, Trends And Forecast to 2020: Grand View Research

    The global market for biotechnology is expected to reach USD 604.40 billion by 2020, according to a new study by Grand View Research, Inc. Increasing application scope coupled with the rising demand for effective vaccines and drugs in an attempt to improve healthcare access to patients with unmet medical needs is expected to drive market demand over the next six years. In addition, the need to ...


  • Converting plant waste into biofuels

    Promising advances using yeast and fungi. Written by Nancy W. Stauffer. You can read the original story in MIT News MIT researchers are genetically engineering yeast to break down stubborn plant fibers into sugars that it can then ferment — a first ...

  • IAQ investigators often overlook Bacteria as the Root Cause of Occupant Complaints

    Untitled Document Many investigators have been dealing with mold issues the last few years and may have been overlooking bacteria as the underlying microbial problem. Bacteria ...


    By EMSL Analytical, Inc.

  • Janssen Pharmaceutical Case Study

    Background Janssen (formerly Centocor Inc), a subsidiary of Johnson & Johnson, runs a state-of-the-art biopharmaceutical manufacturing facility in Cork, Republic of Ireland. The plant consists of a 10,000m² production building along with a central utilities building, a laboratory and administration block, waste water treatment plant and warehousing/storage. The facility ...


    By Scannell Solutions Limited

  • 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 ...


  • 3-D Microemulsion (3DMe)™ Superior Distribution: Cost-Effective Treatment of Large Plumes

    3-D Microemulsion (3DMe)™, a form of HRC Advanced®, is the current state-of-the-art in slow-release electron donor products for the in-situ treatment of chlorinated solvents in groundwater. By employing a sequential, staged release of hydrogen, 3DMe provides an immediate and long-term release of hydrogen for enhanced longevity. Equally as important is the compound’s unique self-distribution ...


    By REGENESIS

  • Carbon Monoxide (CO) and Carbon Dioxide (CO2) Safety

    Know the Gases, Know the Dangers and Protect Yourself Do you know the differences between carbon monoxide (CO) and carbon dioxide (CO2)? If you don’t then there are no guarantees your safety measures will be adequate. These two different gases are often mixed up with people becoming confused over which they need to protect against, when and how. ...


    By SHEilds Ltd

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