Availability: Evaluation of near infrared spectroscopy to estimate process parameters in anaerobic digestion of agricultural feedstocks

Evaluation of near infrared spectroscopy to estimate process parameters in anaerobic digestion of agricultural feedstocks:

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Bibliographic Details
Main Author:	Krapf, Lutz Christian (Author)
Format:	Thesis/Dissertation Book
Language:	English
Published:	2013
Subjects:	Hochschulschrift
Links:	http://mediatum.ub.tum.de/node?id=1127534 https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20130715-1127534-0-4 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=026826032&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA
Physical Description:	XIV, 94 S. Ill., graph. Darst.

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adam_text	TABLE OF CONTENT LIST OF ABBREVIATIONS VII SUMMARY VII ZUSAMMENFASSUNG X 1. INTRODUCTION 1.1. PROBLEM 1.2. NEAR INFRARED SPECTROSCOPY FOR THE MONITORING OF ANAEROBIC DIGESTION 1.3. PREVIOUS RESEARCH ON THE USE OF NIR SPECTROSCOPY IN AD 2. OBJECTIVE OF THESIS 9 3. GENERAL MATERIAL AND METHODS PART 10 3.1. OVERVIEW OF THE EXPERIMENTS 10 3.2. NIR CALIBRATION PERFORMANCE PARAMETERS 11 3.3. REFERENCE METHODS OF ANALYSIS 14 3.3.1. PRECISION OF THE REFERENCE METHOD 15 3.3.2. EFFECT OF SAMPLE TREATMENT ON WET CHEMISTRY RESULTS 16 3.3.3. COMPARISON OF TOTAL VFA AT WITH TOTAL VFA QC 19 4. DEVELOPMENT OF A FEEDSTOCK-ROBUST NEAR INFRARED APPLICATION 20 4.1. CALIBRATION DEVELOPMENT UNDER LAB CONDITIONS 20 ABSTRACT 20 4.1.1. MATERIAL AND METHODS 20 4.1.1.1. SAMPLE MATERIAL AND SAMPLING PROCEDURE 20 4.1.1.2. NEAR INFRARED SPECTROSCOPY 21 4.1.1.3. MULTIVARIATE DATA ANALYSIS 22 4.1.2. RESULTS AND DISCUSSION 24 4.1.2.1. REFERENCE DATA SET CHARACTERISTICS 24 4.1.2.2. MAJOR SPECTRAL CHARACTERISTICS 26 4.1.2.3. PLS REGRESSION MODELLING 27 4.2. MODEL VALIDATION IN THE LAB 34 ABSTRACT 34 4.2.1. MATERIAL AND METHODS 34 4.2.1.1. COLLECTION OF SAMPLE MATERIAL FOR MODEL VALIDATION 34 4.2.1.2. SPECTRA RECORDINGS AND REFERENCE ANALYSIS 35 V HTTP://D-NB.INFO/1045001163 4.2.1.3. PLS CALIBRATION AND PERFORMANCE TESTING 35 4.2.1.4. SPIKING EXPERIMENTS 36 4.2.2. RESULTS AND DISCUSSION 36 4.2.2.1. VALIDATION DATA SET CHARACTERISTICS 36 4.2.2.2. PLS MODEL VALIDATION RESULTS 37 4.3. SPECTRA TRANSFER FOR REAL-TIME IN SITU MONITORING OF ANAEROBIC DIGESTION 46 ABSTRACT 46 4.3.1. MATERIAL AND METHODS 46 4.3.1.1. USE OF SAMPLES THAT WERE OBTAINED FROM THE LAB INSTRUMENT 46 4.3.1.2. ONLINE SPECTRAL RECORDINGS 46 4.3.1.3. SPECTRAL TRANSFER BY PIECEWISE DIRECT STANDARDISATION 48 4.3.1.4. PLS MODEL DEVELOPMENT 51 4.3.1.5. EXTERNAL VALIDATION AND TIME SERIES EVALUATION 52 4.3.2. RESULTS 52 4.3.2.1. REFERENCE DATA SET CHARACTERISTICS 52 4.3.2.2. PRELIMINARY ESTIMATIONS WITHOUT SPECTRA TRANSFER 54 4.3.2.3. PLS MODELLING RESULTS AFTER SPECTRA TRANSFER 54 4.3.2.4. TIME SERIES EVALUATION 58 4.3.3. DISCUSSION 60 5. THE POTENTIAL FOR MONITORING THE SHORT-TERM PROCESS DYNAMICS 64 5.1. DEVELOPMENT OF A MAIZE-SPECIFIC ONLINE CALIBRATION 64 ABSTRACT 64 5.1.1. MATERIAL AND METHODS 64 5.1.1.1. EXPERIMENTAL SETUP AND PROCESS OPERATION 64 5.1.1.2. SPECTRA ACQUISITION AND SAMPLING 65 5.1.1.3. MULTIVARIATE DATA ANALYSIS 66 5.1.1.4. SPECTRA TIME SERIES 67 5.1.2. RESULTS AND DISCUSSION 67 5.1.2.1. REFERENCE DATA SET CHARACTERISTICS 67 5.1.2.2. PLS CALIBRATION RESULTS 68 5.1.2.3. TIME SERIES EVALUATION 69 5.2. MODEL EXPANSION BY INCLUSION OF FURTHER FEEDSTOCK 72 ABSTRACT 72 5.2.1. MATERIAL AND METHODS 72 5.2.1.1. FERMENTATION RUNS FOR COLLECTION OF ADDITIONAL SAMPLES 72 5.2.1.2. MODEL DEVELOPMENT AND TIME SERIES VALIDATION 73 5.2.2. RESULTS AND DISCUSSION 74 5.2.2.1. REFERENCE DATA SET CHARACTERISTICS 74 5.2.2.2. PLS CALIBRATION RESULTS 74 5.2.2.3. TIME SERIES VALIDATION 76 6. MAJOR OUTCOMES AND SUGGESTIONS FOR FUTURE WORK 85 7. REFERENCES 89 VI
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discipline	Chemie / Pharmazie Biologie Agrar-/Forst-/Ernährungs-/Haushaltswissenschaft / Gartenbau Energietechnik Wirtschaftswissenschaften Geographie
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spellingShingle	Krapf, Lutz Christian Evaluation of near infrared spectroscopy to estimate process parameters in anaerobic digestion of agricultural feedstocks
subject_GND	(DE-588)4113937-9
title	Evaluation of near infrared spectroscopy to estimate process parameters in anaerobic digestion of agricultural feedstocks
title_auth	Evaluation of near infrared spectroscopy to estimate process parameters in anaerobic digestion of agricultural feedstocks
title_exact_search	Evaluation of near infrared spectroscopy to estimate process parameters in anaerobic digestion of agricultural feedstocks
title_full	Evaluation of near infrared spectroscopy to estimate process parameters in anaerobic digestion of agricultural feedstocks Lutz Christian Krapf
title_fullStr	Evaluation of near infrared spectroscopy to estimate process parameters in anaerobic digestion of agricultural feedstocks Lutz Christian Krapf
title_full_unstemmed	Evaluation of near infrared spectroscopy to estimate process parameters in anaerobic digestion of agricultural feedstocks Lutz Christian Krapf
title_short	Evaluation of near infrared spectroscopy to estimate process parameters in anaerobic digestion of agricultural feedstocks
title_sort	evaluation of near infrared spectroscopy to estimate process parameters in anaerobic digestion of agricultural feedstocks
topic_facet	Hochschulschrift
url	http://mediatum.ub.tum.de/node?id=1127534 https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20130715-1127534-0-4 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=026826032&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA
work_keys_str_mv	AT krapflutzchristian evaluationofnearinfraredspectroscopytoestimateprocessparametersinanaerobicdigestionofagriculturalfeedstocks

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