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Papers by Richard Agneessens
Annales de Zootechnie, 1995
Freshwater algal biomass and orange and lemon peels were assessed as tissue paper pulp supplement... more Freshwater algal biomass and orange and lemon peels were assessed as tissue paper pulp supplements. Cellulose and hemicellulose contents of algal biomass were 7.1% and 16.3%, respectively, whereas for citrus peels cellulose content ranged from 12.7% to 13.6% and hemicellulose from 5.3% to 6.1%. For all materials, lignin and ash content was 2% or lower, rendering them suitable for use as paper pulp supplements. The addition of algal biomass to paper pulp increased its mechanical strength significantly. However, brightness was adversely affected by chlorophyll. The addition of citrus peels in paper pulp had no effect on breaking length, increased bursting strength and decreased tearing resistance. Brightness was negatively affected at proportions of 10%, because citrus peel particles behave as coloured pigments. The cost of both materials is about 45% lower than that of conventional pulp, resulting in a 0.9-4.5% reduction in final paper price upon their addition to the pulp.
Journal of Near Infrared Spectroscopy, 1994
... Material and methods Silage material The 56 silages analysed were made of rye-grass or of a m... more ... Material and methods Silage material The 56 silages analysed were made of rye-grass or of a mixture of rye-grass (Lolium perenne), Timothy grass (Phleum pratense) and clover (Trifolium pratense). ... G. Sinnaeve et al., J. Near Infrared Spectrosc. 2, 7984 (1994) 79 ...
Journal of Near Infrared Spectroscopy, 1994
Journal of Near Infrared Spectroscopy, 1997
Biotechnology, Agronomy, Society and Environment
Cellulose, hemicelluloses, lignin, and ash contents in various lignocellulosic crops for second g... more Cellulose, hemicelluloses, lignin, and ash contents in various lignocellulosic crops for second generation bioethanol production. Various green energy crops are available for the production of renewable energy vectors such as second generation bioethanol. The efficiency of the energy recovery potential of these lignocellulosic crops depends on the crop husbandry, their content of main components (cellulose, hemicelluloses, lignin, ash) and on the second generation bioethanol production process. The lignocellulosic crops investigated in this study are miscanthus (Miscanthus x giganteus J.M.Greef & Deuter ex Hodk. & Renvoize), switchgrass (Panicum virgatum L.), fescue (Festuca arundinacea Schreb.), fiber sorghum (Sorghum bicolor (L.) Moench), fiber corn (Zea mays L.), "cocksfoot-alfalfa" mixture (Dactylis glomerata L. – Medicago sativa L.), comfrey (Symphytum officinale L.), jerusalem artichoke (aerial part) (Helianthus tuberosus L.) and hemp (Cannabis sativa L.). The sample...
![Research paper thumbnail of Higher heating value prediction of lignocellulosic crop based on their content of main components [abstract]](https://attachments.academia-assets.com/42437144/thumbnails/1.jpg)
](Biotechnology, Agronomy, Society and Environment
The efficiency of the energy recovery potential of lignocellulosic crops as solid biofuel depends... more The efficiency of the energy recovery potential of lignocellulosic crops as solid biofuel depends on various characteristics. One of the main characteristics in this field is the higher heating value. It is defined as the amount of heat emitted by the combustion of a fuel, including the heat coming from the condensation of the water vapor. Its value depends on the content of main components of the lignocellulosic crops. Two models predicting the higher heating value have been built based on the content of main components of the following lignocellulosic crops: miscanthus (Miscanthus x giganteus J.M.Greef & Deuter ex Hodk. & Renvoize), switchgrass (Panicum virgatum L.), Jerusalem artichoke (aerial part) (Helianthus tuberosus L.), fiber sorghum (Sorghum bicolor (L.) Moench), fiber corn (Zea mays L.) and hemp (Cannabis sativa L.) [trials made at Libramont (Belgium) in 2007 and 2008]. The first model predicts the higher heating value of the lignocellulosic crops based on sum of the prod...
Aim: -To examine the composition of Perennial ryegrass (Lollium perenne), Hybid ryegrass (L .hybr... more Aim: -To examine the composition of Perennial ryegrass (Lollium perenne), Hybid ryegrass (L .hybridum) and Italian ryegrass (L. multiforum) -To investigate the influence of cultivar (early, intermediate, and late precocity degree; diploid and tetraploïd), development stage (elongation, heading, flowering), harvest time in the day, and tedding on carbohydrate availability in the harvested biomass.
Introduction: Jerusalem artichoke biomass consists mainly of structural polysaccharides, reserve ... more Introduction: Jerusalem artichoke biomass consists mainly of structural polysaccharides, reserve polyfructans and solubles sugars that can be converted by microorganisms to ethanol.
Cellulose, 2015
The detergent fiber and the insoluble dietary fiber methods were compared to quantitate lignin in... more The detergent fiber and the insoluble dietary fiber methods were compared to quantitate lignin in commelinid and non-commelinid magnoliophyta biomasses. This comparison was based on the precision of these methods and on the correlation between these methods. The present study showed that the insoluble dietary fiber method was more reliable to quantitate lignin because of its higher precision and smaller bias, as compared to the detergent fiber method. Nevertheless, the less tedious and resource consuming detergent fiber method can reliably be used to predict the results of the insoluble dietary fiber method with the correction factors determined in this paper. These correction factors of commelinid biomasses are distinctive of those of non-commelinid magnoliophyta biomasses. The lignin content should be corrected for protein-like compounds, otherwise lignin is significantly overestimated. Owing to these correction factors, the biofuel (e.g. cellulosic ethanol and biomethanation production), bio-based chemicals and feed sectors can use the detergent fiber method to rapidly and reliably estimate the available amounts of lignin of plant biomasses and rank them according to their suitability to be converted based on their lignin content.
Talanta, Jan 30, 2011
We adapted and optimized a method to quantify the cellulose, hemicellulose, xylan, arabinan, mann... more We adapted and optimized a method to quantify the cellulose, hemicellulose, xylan, arabinan, mannan, galactan contents in lignocellulosic biomass. This method is based on a neutral detergent extraction (NDE) of the interfering biomass components, followed by a sulfuric acid hydrolysis (SAH) of the structural polysaccharides, and a liquid chromatography with charged aerosol detection (LC-CAD) to analyze the released monosaccharides. The first step of this NDE-SAH-LC-CAD method aims at removing all compounds that interfere with the subsequent sulphuric acid hydrolysis or with the subsequent chromatographic quantification of the cellulosic and hemicellulosic monosaccharides. This step includes starch hydrolysis with an analytical thermostable α-amylase followed by an extraction of soluble compounds by a Van Soest neutral detergent solution (NDE). The aim of this paper was to assess the precision of this method when choosing fiber sorghum (Sorghum bicolor (L.) Moench), tall fescue (Fest...
Annales de Zootechnie, 1995
Freshwater algal biomass and orange and lemon peels were assessed as tissue paper pulp supplement... more Freshwater algal biomass and orange and lemon peels were assessed as tissue paper pulp supplements. Cellulose and hemicellulose contents of algal biomass were 7.1% and 16.3%, respectively, whereas for citrus peels cellulose content ranged from 12.7% to 13.6% and hemicellulose from 5.3% to 6.1%. For all materials, lignin and ash content was 2% or lower, rendering them suitable for use as paper pulp supplements. The addition of algal biomass to paper pulp increased its mechanical strength significantly. However, brightness was adversely affected by chlorophyll. The addition of citrus peels in paper pulp had no effect on breaking length, increased bursting strength and decreased tearing resistance. Brightness was negatively affected at proportions of 10%, because citrus peel particles behave as coloured pigments. The cost of both materials is about 45% lower than that of conventional pulp, resulting in a 0.9-4.5% reduction in final paper price upon their addition to the pulp.
Journal of Near Infrared Spectroscopy, 1994
... Material and methods Silage material The 56 silages analysed were made of rye-grass or of a m... more ... Material and methods Silage material The 56 silages analysed were made of rye-grass or of a mixture of rye-grass (Lolium perenne), Timothy grass (Phleum pratense) and clover (Trifolium pratense). ... G. Sinnaeve et al., J. Near Infrared Spectrosc. 2, 7984 (1994) 79 ...
Journal of Near Infrared Spectroscopy, 1994
Journal of Near Infrared Spectroscopy, 1997
Biotechnology, Agronomy, Society and Environment
Cellulose, hemicelluloses, lignin, and ash contents in various lignocellulosic crops for second g... more Cellulose, hemicelluloses, lignin, and ash contents in various lignocellulosic crops for second generation bioethanol production. Various green energy crops are available for the production of renewable energy vectors such as second generation bioethanol. The efficiency of the energy recovery potential of these lignocellulosic crops depends on the crop husbandry, their content of main components (cellulose, hemicelluloses, lignin, ash) and on the second generation bioethanol production process. The lignocellulosic crops investigated in this study are miscanthus (Miscanthus x giganteus J.M.Greef & Deuter ex Hodk. & Renvoize), switchgrass (Panicum virgatum L.), fescue (Festuca arundinacea Schreb.), fiber sorghum (Sorghum bicolor (L.) Moench), fiber corn (Zea mays L.), "cocksfoot-alfalfa" mixture (Dactylis glomerata L. – Medicago sativa L.), comfrey (Symphytum officinale L.), jerusalem artichoke (aerial part) (Helianthus tuberosus L.) and hemp (Cannabis sativa L.). The sample...
Biotechnology, Agronomy, Society and Environment
The efficiency of the energy recovery potential of lignocellulosic crops as solid biofuel depends... more The efficiency of the energy recovery potential of lignocellulosic crops as solid biofuel depends on various characteristics. One of the main characteristics in this field is the higher heating value. It is defined as the amount of heat emitted by the combustion of a fuel, including the heat coming from the condensation of the water vapor. Its value depends on the content of main components of the lignocellulosic crops. Two models predicting the higher heating value have been built based on the content of main components of the following lignocellulosic crops: miscanthus (Miscanthus x giganteus J.M.Greef & Deuter ex Hodk. & Renvoize), switchgrass (Panicum virgatum L.), Jerusalem artichoke (aerial part) (Helianthus tuberosus L.), fiber sorghum (Sorghum bicolor (L.) Moench), fiber corn (Zea mays L.) and hemp (Cannabis sativa L.) [trials made at Libramont (Belgium) in 2007 and 2008]. The first model predicts the higher heating value of the lignocellulosic crops based on sum of the prod...
Aim: -To examine the composition of Perennial ryegrass (Lollium perenne), Hybid ryegrass (L .hybr... more Aim: -To examine the composition of Perennial ryegrass (Lollium perenne), Hybid ryegrass (L .hybridum) and Italian ryegrass (L. multiforum) -To investigate the influence of cultivar (early, intermediate, and late precocity degree; diploid and tetraploïd), development stage (elongation, heading, flowering), harvest time in the day, and tedding on carbohydrate availability in the harvested biomass.
Introduction: Jerusalem artichoke biomass consists mainly of structural polysaccharides, reserve ... more Introduction: Jerusalem artichoke biomass consists mainly of structural polysaccharides, reserve polyfructans and solubles sugars that can be converted by microorganisms to ethanol.
Cellulose, 2015
The detergent fiber and the insoluble dietary fiber methods were compared to quantitate lignin in... more The detergent fiber and the insoluble dietary fiber methods were compared to quantitate lignin in commelinid and non-commelinid magnoliophyta biomasses. This comparison was based on the precision of these methods and on the correlation between these methods. The present study showed that the insoluble dietary fiber method was more reliable to quantitate lignin because of its higher precision and smaller bias, as compared to the detergent fiber method. Nevertheless, the less tedious and resource consuming detergent fiber method can reliably be used to predict the results of the insoluble dietary fiber method with the correction factors determined in this paper. These correction factors of commelinid biomasses are distinctive of those of non-commelinid magnoliophyta biomasses. The lignin content should be corrected for protein-like compounds, otherwise lignin is significantly overestimated. Owing to these correction factors, the biofuel (e.g. cellulosic ethanol and biomethanation production), bio-based chemicals and feed sectors can use the detergent fiber method to rapidly and reliably estimate the available amounts of lignin of plant biomasses and rank them according to their suitability to be converted based on their lignin content.
Talanta, Jan 30, 2011
We adapted and optimized a method to quantify the cellulose, hemicellulose, xylan, arabinan, mann... more We adapted and optimized a method to quantify the cellulose, hemicellulose, xylan, arabinan, mannan, galactan contents in lignocellulosic biomass. This method is based on a neutral detergent extraction (NDE) of the interfering biomass components, followed by a sulfuric acid hydrolysis (SAH) of the structural polysaccharides, and a liquid chromatography with charged aerosol detection (LC-CAD) to analyze the released monosaccharides. The first step of this NDE-SAH-LC-CAD method aims at removing all compounds that interfere with the subsequent sulphuric acid hydrolysis or with the subsequent chromatographic quantification of the cellulosic and hemicellulosic monosaccharides. This step includes starch hydrolysis with an analytical thermostable α-amylase followed by an extraction of soluble compounds by a Van Soest neutral detergent solution (NDE). The aim of this paper was to assess the precision of this method when choosing fiber sorghum (Sorghum bicolor (L.) Moench), tall fescue (Fest...