Next Article in Journal
Development of Soil Compaction Analysis Software (SCAN) Integrating a Low Cost GPS Receiver and Compactometer
Previous Article in Journal
A Bioanalytical Platform for Simultaneous Detection and Quantification of Biological Toxins
Article Menu

Export Article

Open AccessArticle
Sensors 2012, 12(2), 2340-2350; doi:10.3390/s120202340

NIR Monitoring of Ammonia in Anaerobic Digesters Using a Diffuse Reflectance Probe

1
Department of Engineering, Aarhus University, Blichers Allé 20, Tjele DK 8830, Denmark
2
Department of Food Science, Aarhus University, Kirstinebjergvej 10, Årslev DK 5792, Denmark
*
Author to whom correspondence should be addressed.
Received: 18 January 2012 / Revised: 16 February 2012 / Accepted: 16 February 2012 / Published: 21 February 2012
(This article belongs to the Section Chemical Sensors)
View Full-Text   |   Download PDF [393 KB, uploaded 21 June 2014]   |  

Abstract

The feasibility of using a diffuse reflectance probe attached to a near infrared spectrometer to monitor the total ammonia nitrogen (TAN) content in an anaerobic digester run on cattle manure was investigated; as a previous study has indicated that this probe can be easily attached to an anaerobic digester. Multivariate modelling techniques such as partial least squares regression and interval partial least squares methods were used to build models. Various data pre-treatments were applied to improve the models. The TAN concentrations measured were in the range of 1.5 to 5.5 g/L. An R2 of 0.91 with an RMSEP of 0.32 was obtained implying that the probe could be used for monitoring and screening purposes. View Full-Text
Keywords: NIRS; biogas; ammonia; inhibition; monitoring; manure; PLS; iPLS NIRS; biogas; ammonia; inhibition; monitoring; manure; PLS; iPLS
Figures

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Supplementary material

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Raju, C.S.; Løkke, M.M.; Sutaryo, S.; Ward, A.J.; Møller, H.B. NIR Monitoring of Ammonia in Anaerobic Digesters Using a Diffuse Reflectance Probe. Sensors 2012, 12, 2340-2350.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top