Skip to main content

Main menu

  • About the Journal
    • Aims & Scope
    • Editorial Board
    • Browse Archive
    • Abstracting - Indexing
    • About IWA Publishing
  • Subscribe
    • Institutional Subscriptions
    • User Licences
    • IP Registration
    • IWA Member Subscriptions
  • Open Access
  • For Authors
    • Online Submission
    • Publish with Us
    • Instructions for Authors
    • Open Access
    • How to review a paper
    • Rights & Permissions
    • Article Promotion
  • For Librarians
    • Usage Statistics
    • Subscriber Services
    • Sample Issue
    • Terms and Conditions
  • For Readers
    • Recommend to Your Library
    • Rights & Permissions
    • How to Subscribe
  • Collections
  • Help
    • FAQ
    • Contact Us
  • Other Publications
    • IWAP Online
    • Journal of Hydroinformatics
    • Journal of Water and Health
    • Journal of Water and Climate Change
    • Journal of Water Reuse and Desalination
    • Journal of Water Supply: Research and Technology-AQUA
    • H2Open Journal
    • Hydrology Research
    • Water Practice and Technology
    • Water Research
    • Water Policy
    • Water Quality Research Journal
    • Water Science and Technology
    • Water Science and Technology: Water Supply
    • Journal of Water Sanitation and Hygiene for Development
    • Water Intelligence Online
    • Ingeniería del agua
    • IWA Publishing

User menu

  • Log-in
  • Sign-up for alerts

Search

  • Advanced search
Water Science & Technology
  • Other Publications
    • IWAP Online
    • Journal of Hydroinformatics
    • Journal of Water and Health
    • Journal of Water and Climate Change
    • Journal of Water Reuse and Desalination
    • Journal of Water Supply: Research and Technology-AQUA
    • H2Open Journal
    • Hydrology Research
    • Water Practice and Technology
    • Water Research
    • Water Policy
    • Water Quality Research Journal
    • Water Science and Technology
    • Water Science and Technology: Water Supply
    • Journal of Water Sanitation and Hygiene for Development
    • Water Intelligence Online
    • Ingeniería del agua
    • IWA Publishing

Log-in

Sign-up for alerts   

  • My Cart
Water Science & Technology
Browse Archive
Advanced Search
  • About the Journal
    • Aims & Scope
    • Editorial Board
    • Browse Archive
    • Abstracting - Indexing
    • About IWA Publishing
  • Subscribe
    • Institutional Subscriptions
    • User Licences
    • IP Registration
    • IWA Member Subscriptions
  • Open Access
  • For Authors
    • Online Submission
    • Publish with Us
    • Instructions for Authors
    • Open Access
    • How to review a paper
    • Rights & Permissions
    • Article Promotion
  • For Librarians
    • Usage Statistics
    • Subscriber Services
    • Sample Issue
    • Terms and Conditions
  • For Readers
    • Recommend to Your Library
    • Rights & Permissions
    • How to Subscribe
  • Collections
  • Help
    • FAQ
    • Contact Us

You are here

  • Home
  • Archive
  • Volume 30, Issue 12

On-line monitoring of anaerobic digestion: application of a device for continuous measurement of bicarbonate alkalinity

Freda R. Hawkes, Alan J. Guwy, Dennis L. Hawkes, Alberto G. Rozzi
Published December 1994, 30 (12) 1-10;
Freda R. Hawkes
Department of Science and Chemical Engineering, University of Glamorgan, Pontypridd, Mid Glamorgan CF37 1DL, UK
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Alan J. Guwy
Department of Science and Chemical Engineering, University of Glamorgan, Pontypridd, Mid Glamorgan CF37 1DL, UK
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Dennis L. Hawkes
Department of Mechanical and Manufacturing Engineering, University of Glamorgan, Pontypridd, Mid Glamorgan CF37 1DL, UK
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Alberto G. Rozzi
Dip. Ing. Idraulica, Ambientale e del Rilevamento, Politecnico di Milano, via Fratelli Gorlini 1, 20151 Milano, Italy
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • Article
  • Info & Metrics
  • PDF
Loading

Abstract

Alkalinity or pH buffering capacity in anaerobic digesters is chiefly a function of bicarbonate levels, and should be within 10 to 50 mM for stable operation. A novel on-line instrument for measuring bicarbonate alkalinity has been developed, independent of titration techniques.

Using a 10 litre anaerobic filter digester operating on ice-cream wastewater, on-line measurements were made of bicarbonate alkalinity, pH, gas production and % CO2 and hydrogen concentration in the biogas during periods of organic overload. The bicarbonate alkalinity monitor was shown to be an effective instrument for monitoring instability of anaerobic digestion, and a useful tool for early warning of overloading. Moreover, in digesters fed with wastewaters containing low potential alkalinity, it allows indirect on-line determination of variations in volatile fatty acid concentration. Finally, used in conjunction with a sensor that measures CO2 in the gas, it allows an indirect but accurate determination of pH in those solutions where fouling of electrodes is severe.

  • Anaerobic digestion
  • bicarbonate alkalinity
  • ice-cream wastewater
  • on-line monitoring
  • organic overload
  • © IWA Publishing 1994

Log in using your username and password

Forgot your user name or password?

Purchase access

User Login Menu

  • Create a new account
  • Forgot username/password?
  • Can't get past this page?
  • Help with Cookies
  • Need to Activate?
Previous ArticleNext Article
Back to top

SELECTED ISSUE

Water Science and Technology: 77 (6)
  Volume 30, Issue 12

  Table of Contents
  Uncorrected Proofs
  Browse Archive

Actions

Email

Thank you for your interest in spreading the word on Water Science & Technology.

NOTE: We only request your email address so that the person you are recommending the page to knows that you wanted them to see it, and that it is not junk mail. We do not capture any email address.

Enter multiple addresses on separate lines or separate them with commas.
On-line monitoring of anaerobic digestion: application of a device for continuous measurement of bicarbonate alkalinity
(Your Name) has sent you a message from Water Science & Technology
(Your Name) thought you would like to see the Water Science & Technology web site.
Share
On-line monitoring of anaerobic digestion: application of a device for continuous measurement of bicarbonate alkalinity
Freda R. Hawkes, Alan J. Guwy, Dennis L. Hawkes, Alberto G. Rozzi
Water Science and Technology Dec 1994, 30 (12) 1-10;
del.icio.us logo Digg logo Reddit logo Twitter logo CiteULike logo Connotea logo Facebook logo Google logo Mendeley logo
Citation Tools
On-line monitoring of anaerobic digestion: application of a device for continuous measurement of bicarbonate alkalinity
Freda R. Hawkes, Alan J. Guwy, Dennis L. Hawkes, Alberto G. Rozzi
Water Science and Technology Dec 1994, 30 (12) 1-10;

Citation Manager Formats

  • BibTeX
  • Bookends
  • EasyBib
  • EndNote (tagged)
  • EndNote 8 (xml)
  • Medlars
  • Mendeley
  • Papers
  • RefWorks Tagged
  • Ref Manager
  • RIS
  • Zotero
View Full PDF
Save to my folders
Alerts

Please log in to add an alert for this article.

  • Tweet Widget
  • Facebook Like

Jump to

  • Article
  • Info & Metrics
  • PDF

Related Articles

Cited By...

More in this TOC Section

  • An inexact multi-objective programming model for water resources management in industrial parks of Binhai New Area, China
  • Use of the ferrates (FeIV–VI) in combination with hydrogen peroxide for rapid and effective remediation of water – laboratory and pilot study
  • Adsorption of sunset yellow FCF from aqueous solution by chitosan-modified diatomite
Show more Research Articles

Similar Articles

Keywords

anaerobic digestion
bicarbonate alkalinity
ice-cream wastewater
on-line monitoring
organic overload
  • Current Issue
  • Uncorrected Proofs
  • Browse Archive
  • Feedback
  • Online Submission
  • Subscribe
  • Contents Alerts
  • About the Journal
  • Open Access
  • Rights & Permissions

IWA Publishing
Alliance House
12, Caxton Street
London SW1H 0QS, UK

Tel: +44 (0)20 7654 5500
Fax: +44 (0)20 7654 5555
Remove (0) if calling from outside the UK
iwapublishing.com
Company registered in England no. 3690822

© IWA Publishing | Cookies | Terms & Conditions | Privacy | Site Map | ISSN Print: 0273-1223 | ISSN Online: 1996-9732