scholarly journals Influence of Granular Activated Carbon on Anaerobic Co-Digestion of Sugar Beet Pulp and Distillers Grains with Solubles

Processes ◽  
2020 ◽  
Vol 8 (10) ◽  
pp. 1226
Author(s):  
Elvira E. Ziganshina ◽  
Dmitry E. Belostotskiy ◽  
Svetlana S. Bulynina ◽  
Ayrat M. Ziganshin

Anaerobic digestion is an important technology to receive energy from various types of biomass. In this work, the impact of granular activated carbon (GAC) on the mesophilic anaerobic co-digestion of sugar beet pulp and distillers grains was investigated. After a short period, anaerobic reactors began to produce biomethane and were ready for completion within 19–24 days. The addition of GAC to reactors (5–10 g L−1) significantly enhanced the methane production rate and consumption of produced volatile fatty acids. Thus, the maximum methane production rate increased by 13.7% in the presence of GAC (5 g L−1). Bacterial and archaeal community structure and dynamics were investigated, based on 16S rRNA genes analysis. The abundant classes of bacteria in GAC-free and GAC-containing reactors were Clostridia, Bacteroidia, Actinobacteria, and Synergistia. Methanogenic communities were mainly represented by the genera Methanosarcina, Methanoculleus, Methanothrix, and Methanomassiliicoccus in GAC-free and GAC-containing reactors. Our results indicate that the addition of granular activated carbon at appropriate dosages has a positive effect on anaerobic co-digestion of by-products of the processing of sugar beet and ethanol distillation process.

2019 ◽  
Vol 9 (9) ◽  
pp. 1791 ◽  
Author(s):  
Xiomara Gómez-Quiroga ◽  
Kaoutar Aboudi ◽  
Carlos José Álvarez-Gallego ◽  
Luis Isidoro Romero-García

In this paper, the viability of thermophilic anaerobic co-digestion of exhausted sugar beet pulp (ESBP) and pig manure (PM) was evaluated. The effect of the proportion of ESBP on biogas production was investigated by using a series of lab-scale batch assays, in duplicates. The following five ESBP:PM mixture ratios were studied: 0:100, 10:90, 25:75, 50:50, and 100:0. The highest cumulative methane production (212.4 mL CH4/g VSadded) was reached for the mixture 25:75. The experimental results showed that the increase in the proportion of ESBP in the mixture led to the distortion of the process, due to acidification by the volatile fatty acids generated. Acetic acid was the predominant acid in all the cases, representing more than 78% of the total acidity. Moreover, the results obtained by operating at thermophilic temperatures have been compared with those obtained in a previous study conducted at mesophilic temperatures. The results have shown that in the individual digestion of ESBP, the activity of acetoclastic methanogens was affected in both temperatures, but especially in thermophilic conditions. Thus, the methane produced in the individual thermophilic digestion of ESBP came almost entirely from the activity of hydrogen-utilizing methanogenic archaea.


1969 ◽  
Vol 23 (4) ◽  
pp. 813-826 ◽  
Author(s):  
J. L. Clapperton ◽  
J. W. Czerkawski

1. The daily methane production of sheep given sugar-beet pulp was greater than that of sheep given hay. The rates of methane production on both diets increased during feeding and then decreased to an apparently steady value. When no food was given the rates of methane production continued to fall exponentially with a half-life of about 24 h.2. Mixtures of unsaturated long-chain fatty acids infused into the rumen during feeding inhibited the production of methane. The inhibition was greater when the sheep were given hay than when they were given sugar-beet pulp.3. In general the concentration of soluble carbohydrates in the rumen increased during feeding and fell rapidly to the values found before feeding as soon as the sheep finished eating. The infusion of unsaturated fatty acids during feeding did not result in an accumulation of soluble carbohydrate in the rumen.4. It is suggested that the rapid methane production during feeding was associated with fermentation of the more soluble part of the diet and that the fermentation of carbohydrate was not inhibited by the infused fatty acids. The results are consistent with specific inhibition of methanogenesis by unsaturated fatty acids.


2001 ◽  
Vol 2001 ◽  
pp. 112-112 ◽  
Author(s):  
S. E. Pattinson ◽  
C. A. Williams ◽  
M. W. Witt

Lamb concentrate costs account for around 30% of the variable costs of an early lambing system and can account for up to 33% of the variable costs for store lamb finishing (MLC, 2000). Over recent years the price for finished lambs has declined. It is against this background of declining lamb prices and reduced gross margins that cheaper alternatives to proprietary lamb concentrates are being sought. The aim of this work was to evaluate an ensiled mix of pressed sugar beet pulp and dried maize distillers dark grains (Praize, Trident Feeds Limited) for finishing lambs.


2003 ◽  
Vol 2003 ◽  
pp. 98-98
Author(s):  
D. G. Chapple ◽  
K. P. A. Wheeler ◽  
M.W. Witt ◽  
W. E. Blackburn

Feeding lowland sheep on straw-based systems during pregnancy is practised on many livestock/arable farms. Simple mixes of molassed sugar beet feed and distillers dark grains have been cost effective supplements for March-lambing ewes fed straw and produced satisfactory ewe and lamb performance (Chappleet al., 1998 and 2001). An ensiled mix of pressed sugar beet pulp and dried maize distillers grains (Praize, Trident Feeds) has been fed as the sole diet for finishing lambs (Pattinsonet al., 2001) but there is little information on feeding Praize to pregnant ewes. The objective of this study was to compare ewe and lamb performance when March-lambing ewes were fed on a straw-based system and supplemented with either a cereal/protein home-mix, Praize or one of two dried sugar beet pulp/protein mixes.


2009 ◽  
Vol 2009 ◽  
pp. 150-150
Author(s):  
M Kazemi ◽  
A M Tahmasbi ◽  
R Valizadeh ◽  
M Danesh Mesgaran ◽  
M M Moheghi ◽  
...  

Agro-industrial by-products are characteristically high in fiber and low in starch with some disparity in protein content based on source and processing method. Barley Distillers’ Grains (BDG) consists largely of structural and protein remaining when extracted residues of grains used in the brewing process. Fresh BDG contain about 70%-80% moisture and can store as silage. However, there is limited research information available on improving BDG silage with readily fermentable carbohydrate. McKendrick et al. (2003) ensiled BDG with molassed sugar beet pulp (MSBP) very well. The aim of this experiment was to evaluate the potential of ensiled wet BDG with and without MSBP as alternative to maize silage on DM intake, milk yield and composition of dairy cattle.


1975 ◽  
Vol 42 (3) ◽  
pp. 363-369 ◽  
Author(s):  
J. J. Parkins ◽  
G. Fishwick ◽  
N. S. Ritchie ◽  
R. G. Hemingway ◽  
R. Henderson

SummaryA cubed molassed sugar-beet pulp product containing about 3% urea and with added minerals and vitamins was evaluated in 2 continuous feeding trials over 8–10 weeks with cows in early lactation and which had previously been accustomed to receiving dietary urea. In one experiment 50% substitution of a cereal/vegetable protein mixture resulted in a depression in mean daily milk yield of about 0·8kg. In the second experiment, the concentrate contained about 30% dried distillers grains and in this case replacement of one-half with the supplemented molassed sugar-beet pulp product did not decrease milk yields. There were no significant effects on milk composition.


2014 ◽  
Vol 166 ◽  
pp. 187-193 ◽  
Author(s):  
K. Ziemiński ◽  
I. Romanowska ◽  
M. Kowalska-Wentel ◽  
M. Cyran

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