Successful and stable operation of anaerobic thermophilic co-digestion of sun-dried sugar beet pulp and cow manure under short hydraulic retention time

Sugar beet by-products are a lignocellulosic waste generated from sugar beet industry during the sugar production process and stand out for their high carbon content. Moreover, cow manure (CM) is hugely produced in rural areas and livestock industry, which requires proper disposal. Anaerobic digestion of such organic wastes has shown to be a suitable technology for these wastes valorization and bioenergy production. In this context, the biomethane production from the anaerobic co-digestion of exhausted sugar beet pulp (ESBP) and CM was investigated in this study. Four mixtures (0:100, 50:50, 75:25, and 90:10) of cow manure and sugar beet by-products were evaluated for methane generation by thermophilic batch anaerobic co-digestion assays. The results showed the highest methane production was observed in mixtures with 75% of CM (159.5 mL CH4/g VolatileSolids added). Nevertheless, the hydrolysis was inhibited by volatile fatty acids accumulation in the 0:100 mixture, which refers to the assay without CM addition. The modified Gompertz model was used to fit the experimental results of methane productions and the results of the modeling show a good fit between the estimated and the observed data.

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Preliminary Assessment of a Biogas-based Power Plant from Organic Waste in the North Netherlands

Energies ◽

10.3390/en12214034 ◽

2019 ◽

Vol 12 (21) ◽

pp. 4034 ◽

Cited By ~ 1

Author(s):

Achinas ◽

Martherus ◽

Krooneman ◽

Euverink

Keyword(s):

Power Plant ◽

Sugar Beet ◽

Net Present Value ◽

Anaerobic Bacteria ◽

Sugar Beet Pulp ◽

Cow Manure ◽

The European Union ◽

Present Value ◽

The North ◽

Beet Pulp

Biogas is expected to play a crucial role in achieving the energy targets set by the European Union. Biogas, which mainly comprises methane and carbon dioxide, is produced in an anaerobic reactor, which transforms biomass into biogas. A consortium of anaerobic bacteria and archaea produces biogas during the anaerobic digestion (AD) of various types of feedstocks, such as animal slurries, energy crops, and agricultural residues. A biogas-fed gas turbine-generator and steam generator produce heat and power. In this study, a combined heat and power installation is studied. The biogas-based power plant treating cow manure, grass straw, and sugar beet pulp was examined using the software SuperPro Designer, and the obtained economic reports are evaluated. From the results, subsidy for electricity does not change the feasibility of the plants in case that cow manure or sugar beet pulp are used as feedstocks. The net present value (NPV) of biogas plants treating cow manure and sugar beet pulp was negative and the subsidy is not sufficient to make profitable these cases. The biogas power plant treating straw showed a positive net present value even without subsidy, which means that it is more desirable to invest in a plant that produces electricity and digestate from grass straw.

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On the influence of diet on the retention time of food in the digestive tract of cows

Agricultural and Food Science ◽

10.23986/afsci.71535 ◽

1960 ◽

Vol 32 (1) ◽

pp. 39-51

Author(s):

Aarne Mäkelä ◽

Liisa Liakka

Keyword(s):

Sugar Beet ◽

Digestive Tract ◽

Retention Time ◽

Dry Matter ◽

Sugar Beet Pulp ◽

Mean Retention Time ◽

Retarding Effect ◽

Beet Pulp ◽

The Mean ◽

Matter Basis

The retention times of dry matter and its constituents in the digestive tract of cows on hay+sugar beet pulp (5 cows) and cows fed on hay+swedes (8 cows) are compared with the retention times pertaining to cows fed on hay+concentrate or hay only. The following conclusions were reached; On a hay+sugar beet pulp diet the mean retention time of dry matter in the reticulo-rumen, and the retention times of lignin in the reticulo-rumen, in the whole digestive tract, and in the digestive tract following the reticulo-rumen are of the same magnitude as the corresponding retention times on a hay+concentrate diet (figs. 1, 2, 5, and 6). The mean retention time of membrane substances in the reticulo-rumen seems to be shorter and that of valuable N-free nutrients in the reticulo-rumen longer than the corresponding retention times on a hay+concentrate diet (figs. 3 and 4). On a hay+swede diet the mean retention times of dry matter and membrane substances in the reticulo-rumen are of the same magnitude as on a hay+concentrate diet (figs. 1 and 3). The mean retention time of valuable N-free nutrients in the reticulo-rumen and, in abundant feeding, the retention times of lignin in the reticulo-rumen, in the whole digestive tract, and especially in the digestive tract following the reticulo-rumen are shorter than on the hay+concentrate diet (figs. 2, 4, 5, and 6). On the hay+sugar beet pulp and the hay+swede diets the retention times are in general of the same magnitude. However, the retention time of membrane substances in the reticulo-rumen is shorter and that of the valuable N-free nutrients considerably longer on a hay+sugar beet pulp than on a hay+swede diet. Replacing a certain amount of hay by concentrates, sugar beet pulp or swedes on a dry matter basis seems to have no effect on the mean retention time of dry matter in the reticulo-rumen. However, a retarding effect on the rate of passage of typical hay constituents (lignin and membrane substances) and an accelerating effect on that of valuable N-free nutrients characteristic of concentrated foods was observed. The said replacing accelerates the rate of passage of lignin in the disgestive tract following the reticulo-rumen on a hay+swede diet.

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Anaerobic co-digestion of linen, sugar beet pulp, and wheat straw with cow manure: effects of mixing ratio and transient change of co-substrate

Biomass Conversion and Biorefinery ◽

10.1007/s13399-021-02229-8 ◽

2022 ◽

Author(s):

Mahmoud Elsayed ◽

Yves Andres ◽

Walid Blel

Keyword(s):

Sugar Beet ◽

Wheat Straw ◽

Treatment Plant ◽

Gas Production ◽

Sugar Beet Pulp ◽

Cow Manure ◽

Mixing Ratio ◽

Continuous Stirred Tank Reactor ◽

Transient Change ◽

Beet Pulp

AbstractThis study concerns the improvement and sustainability of producing methane (CH4) from the co-digestion of cow manure (CM), sugar beet pulp (SBP), linen (Ln), and wheat straw (WS). The first step involved co-digesting CM, Ln, and WS at various mixing ratios (CM/Ln/WS) in batch reactors to ascertain the best gas production. Biochemical methane potential (BMP) tests were carried out under mesophilic conditions using sludge from a wastewater treatment plant as an inoculum. The highest CH4 production (351 mL/g VSadd) and volatile solids removal rate (72.87%) were observed at the mixing ratio 50/25/25 and the lowest CH4 production (187 mL/g VSadd) was recorded at the ratio 25/25/50. A kinetic analysis was carried out to suggest the best strategy for methane production based on the ratio of substrates in the mix. The second step involved co-digesting CM, SBP, Ln, and WS in a semi-continuous stirred tank reactor to study the influence of a transient change in co-substrate on gas production and reactor performance. The rate of biogas production doubled with the transient change of co-substrate from WS to SBP, which may be due to the SBP being more easily biodegradable than WS.

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Algebraic methods to determine total tract mean retention time of digesta in ponies given ad libitum access to pelleted diets containing different levels of unmolassed sugar beet pulp

Proceedings of the British Society of Animal Science ◽

10.1017/s1752756200009595 ◽

2005 ◽

Vol 2005 ◽

pp. 48-48 ◽

Cited By ~ 1

Author(s):

J. J. Hyslop

Keyword(s):

Sugar Beet ◽

Retention Time ◽

Dry Matter ◽

Sugar Beet Pulp ◽

Calculation Methods ◽

Passage Rate ◽

Mean Retention Time ◽

Beet Pulp ◽

Digesta Passage ◽

Different Levels

Digesta passage rate may have influenced previously reported work on the intakes, apparent digestibilities and nutritive values of complete pelleted diets containing unmolassed sugar beet pulp (USBP) at levels ranging from 0-800 g/kg dry matter (DM) when offered to ponies (Hyslop, 2002). This study’s objective was to compare total tract mean retention time (TMRT) of digesta using two algebraic calculation methods in the same ponies.

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Obtaining of sorbing material based on sugar beet pulp

Environmental Protection in Oil and Gas Complex ◽

10.33285/2411-7013-2019-6(291)-10-16 ◽

2019 ◽

pp. 10-16

Author(s):

S.V. Meshcheryakov ◽

◽

I.S. Eremin ◽

D.O. Sidorenko ◽

M.S. Kotelev ◽

...

Keyword(s):

Sugar Beet ◽

Sugar Beet Pulp ◽

Beet Pulp

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Kinetic and thermodynamic study of the adsorption of calcium onto sugar beet pulp

Sugar Industry ◽

10.36961/si17787 ◽

2016 ◽

pp. 565-570

Author(s):

Huang Qin ◽

Zhu Si-ming ◽

Zeng Di ◽

Yu Shu-juan

Keyword(s):

Sugar Beet ◽

Adsorption Equilibrium ◽

Ph Value ◽

Hard Water ◽

Sugar Beet Pulp ◽

Order Kinetic ◽

Factors Affecting ◽

Isotherm Equation ◽

Equilibrium Data ◽

Beet Pulp

Sugar beet pulp (SBP) was used as low value adsorbent for the removal of calcium from hard water. Batch experiments were conducted to determine the factors affecting adsorption of the process such as pH value and Ca concentration. The adsorption equilibrium of Ca2+ by the SBP is reached after 100min and a pseudo second-order kinetic model can describe the adsorption process. The initial concentrations of Ca varied from 927 to 1127mgCa2+/L. A dose of 30g/L sugar beet pulp was sufficient for the optimum removal of calcium. The overall uptake of Ca ions by sugar beet pulp has its maximum at pH=8. The adsorption equilibrium data fitted well with the Langmuir adsorption isotherm equation.

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Possibilities of joint treatment of spent sugar beet pulp and waste water from a sugar factory

Sugar Industry ◽

10.36961/si13694 ◽

2012 ◽

pp. 756-761 ◽

Cited By ~ 1

Author(s):

Miroslav Hutnan ◽

Štefan Tóth ◽

Igor Bodík ◽

Nina Kolesárová ◽

Michal Lazor ◽

...

Keyword(s):

Wastewater Treatment ◽

Sugar Beet ◽

Pilot Plant ◽

Biogas Production ◽

Sugar Beet Pulp ◽

Spare Capacity ◽

Anaerobic Reactor ◽

Sugar Factory ◽

Beet Pulp ◽

Joint Treatment

The possibility of joint treatment of spent sugar beet pulp and wastewater from a sugar factory was studied in this work. Works focused on processing of spent sugar beet pulp separately or together with other substrates can be found in the literature. In the case of some sugar factories, which have spare capacity in the anaerobic reactor on an anaerobic-aerobic wastewater treatment plant, joint processing of spent sugar beet pulp and wastewater from the sugar factory might be an interesting option. The results of the operation of a pilot plant of an anaerobic reactor with a capacity of 3.5 m3 are discussed. Operation of the pilot plant confirmed the possibility of cofermentation of these materials. The organic loading rate achieved in the anaerobic reactor was higher than 6 kg/(m3·d) (COD), while more than half of the load was provided by spent sugar beet pulp. The addition of sugar beet pulp decreased the concentration of ammonia nitrogen in the anaerobic reactor and it was even necessary to add nitrogen. However, the nitrogen content in sludge water depends on the C:N ratio in the processed sugar beet pulp, therefore this knowledge cannot be generalized. About 1.5 to 2-fold biogas production can be expected from the cofermentation of wastewater with sugar beet pulp in an anaerobic reactor, compared with the biogas production from just wastewater treatment.

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