Co-digestion of agricultural and industrial wastes

2010 ◽  
Vol 64 (2) ◽  
Author(s):  
Anna Kacprzak ◽  
Liliana Krzystek ◽  
Stanisław Ledakowicz
Keyword(s):  
Production Rate ◽  
Cheese Whey ◽  
Biogas Production ◽  
Waste Product ◽  
Gas Production ◽  
Corn Silage ◽  
Industrial Wastes ◽  
Biodiesel Production ◽  
Digestion Process ◽  
Beet Pulp

AbstractThe efficiency of anaerobic digestion process is dependent on the type and composition of the material to be digested. This work examines the co-digestion of corn silage, beet pulp silage, carrot residues, and cheese whey in different configurations together with a glycerin fraction — the waste product of transestrification of oils (biodiesel production) in a 25 L bioreactor operated mesophically in a quasi-continuous mode. Co-digestion of corn silage with carrot residues appeared to be more effective than that with cheese whey resulting in the gas production rate equal to 5.9 L L−1 d−1 and 1.4 L L−1 d−1, respectively. The performed experiments showed that a combination of three substrates: corn silage, cheese whey, and glycerin fraction resulted in the highest methane content equal to 61 % and the biogas production rate of 1.8 L L−1 d−1.

Preliminary results of the optimization of biogas production at the biogas station of the national research institute of animal production in Grodziec Sląski – Kostkowice

2015 ◽  
Vol 2 (3) ◽  
pp. 26-31
Author(s):  
K. Węglarzy ◽  
Yu. Shliva ◽  
B. Matros ◽  
G. Sych
Keyword(s):  
Agricultural Production ◽  
Crude Protein ◽  
Biogas Production ◽  
Electric Energy ◽  
Corn Silage ◽  
Industrial Wastes ◽  
Organic Mass ◽  
National Research Institute ◽  
Digestion Process ◽  
By Products

Aim. To optimize the methane digestion process while using different recipes of substrate components of ag- ricultural origin. Methods. The chemical composition of separate components of the substrate of agricultural by-products, industrial wastes, fats of the agrorefi nery and corn silage was studied. Dry (organic) mass, crude protein (fat) fi ber, loose ash, nitrogen-free exhaust were estimated in the components and the productivity of biogas was determined along with the methane content. These data were used as a basis for daily recipes of the substrate and the analysis of biogas production at the biogas station in Kostkowice. Results. The application of by-products of agricultural production solves the problem of their storage on boards and in open containers, which reduces investment costs, related to the installation of units for their storage. Conclusions. The return on investment for obtaining electric energy out of agricultural biogas depends considerably on the kind of the substrate used and on technological and market conditions.

Improving Biogas Production and Biodegradability of Acid Hydrolytic Cotton Stalk with Addition of Nutritive Salts and Complex Anaerobic Cellulose Decomposing Bacteria

2013 ◽  
Vol 724-725 ◽  
pp. 383-390
Author(s):  
Yan Bin Li ◽  
Qin Zhang ◽  
Yong Sun
Keyword(s):  
Production Rate ◽  
Biogas Production ◽  
Sem Analysis ◽  
Gas Production ◽  
Control Treatment ◽  
Cotton Stalk ◽  
Average Yield ◽  
Digestion Process ◽  
Degradation Rates ◽  
Nutritive Salt

Nutritive salts and complex anaerobic cellulose decomposing bacteria (CACDB) were added for anaerobic digestion process in order to improve biogas production and biodegradability of acid hydrolytic cotton stalk. The results showed that addition of CACDB, nutritive salt I and nutritive salt II could effectively enhance daily biogas production, cumulative biogas and methane yields, in this treatment, the total gas production, daily average gas production, TS gas production rate, VS gas production rate and average yield of methane were all highest and reached 5908.90 mL, 196.96 ± 7.97 mL·d-1, 143.07 ± 5.79 mL·g-1, 156.32 ± 6.33 mL·g-1, 102.58 ± 3.34 mL·d-1, separately. The addition of CACDB and nutritive salts could improve the biodegradability of acid hydrolytic cotton stalk, in all addition treatments, the degradation rates of cellulose and lignin, VS reduction rates were higher and C/N ratios were lower than control treatment. The SEM analysis showed that the microstructure changes of digestion residues were helpful for biogas production.

Study of Methane Production by High Temperature Anaerobic Fermentation of Chicken Manure and Stalks

2020 ◽  
Vol 14 (4) ◽  
pp. 551-557
Author(s):  
Yongku Li ◽  
Xiaomin Hu ◽  
Lei Feng
Keyword(s):  
High Temperature ◽  
Anaerobic Digestion ◽  
Production Rate ◽  
Methane Production ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Gas Production ◽  
Chicken Manure ◽  
Biogas Slurry ◽  
Production Rates

The changing parameters, as the biogas production rate, the methane production rate, the cumulative biogas amount, the cumulative methane amount, the biogas composition, pH etc. in high temperature anaerobic fermentation of chicken manure and stalks were analyzed by experiments with different mass ratios of chicken manure or livestock manure and stalks with a high C/N ratio. The methane production mechanism of high temperature anaerobic digestion of chicken manure and stalks was discussed in detail. It showed that not only the biogas production rates but also the methane production rates of R1–R7 demonstrated the trend of initial increase and then decrease after 50 d of high temperature anaerobic digestion. Besides, the gas production of R1 with pure chicken manure stopped on the 30th d of the reaction. The gas production of other groups R2–R7 also stopped on the corresponding 34th, 36th, 36th, 37th, 37th, and 37th day, respectively. At the end of the reaction, the cumulative biogas amounts and the cumulative methane amounts of R1–R7 were 411.58 and 269.54, 459.91 and 314.41, 425.32 and 294.11, 401.85 and 272.54, 382.63 and 257.07, 363.04 and 218.16, and 257.15 and 160.10 N ml/(g VS). The biogas slurry pH of R1–R7 all demonstrated a trend of initial decrease and then increase, e. g., pH of R2 reached the minimum of 5.94 on the 5th day. pH values of other groups were between 6.01 and 6.39. After the addition of 4 g of sodium bicarbonate on the 7th day, biogas slurry pH of R1–R7 all increased. pH was maintained between 7.16 and 7.44 until the end of the reaction.

scholarly journals Influence of inoculum type (ileal, caecal and faecal) on the in vitro fermentation of different sources of carbohydrates in rabbits

2018 ◽  
Vol 26 (3) ◽  
pp. 227 ◽  
Author(s):  
Rodrigo Abad-Guzmán ◽  
Jose Antonio Larrea-Dávalos ◽  
Rosa Carabaño ◽  
Javier García ◽  
Maria Dolores Carro
Keyword(s):  
Wheat Straw ◽  
Production Rate ◽  
Gas Production ◽  
Wheat Starch ◽  
Insoluble Residue ◽  
In Vitro Fermentation ◽  
Production Parameters ◽  
Beet Pulp ◽  
Different Sources

<p>Two <em>in vitro</em> experiments were performed to analyse the fermentative potential of ileal content, caecal content, soft faeces and hard faeces from adult rabbits. Experiment 1 evaluated 3 doses (0.5, 1.0 and 2.0 g fresh digesta/g substrate dry matter [DM]) of ileal and caecal digesta as inoculum in 28 h-incubations. Two ileal and 2 caecal inocula were obtained, each by pooling the ileal or caecal digesta of 2 adult rabbits. Pectin from sugar beet pulp (SBP) and the insoluble residue obtained after a 2-step <em>in vitro</em> pre-digestion of SBP and wheat straw were used as substrates. The 0.5 dose produced the lowest (<em>P</em>&lt;0.05) amount of gas at 28 h, with no differences (<em>P</em>&gt;0.05) between the 1.0 and 2.0 doses (44.9, 51.6 and 53.8 mL/g substrate DM, respectively; values averaged across inocula and substrates). Experiment 2 evaluated two doses of ileal inoculum (1 and 1.5 g fresh digesta/g substrate DM) and compared ileal digesta, caecal digesta, soft faeces and hard faeces as inoculum for determining <em>in vitro</em> gas production (144-h incubations) of the 3 substrates used in Experiment 1 and wheat starch. Three inocula of each type were obtained, each by pooling either digesta or faeces from 3 rabbits. There were no differences (<em>P</em>&gt;0.05) between the 2 ileal doses tested in gas production parameters, and therefore the 1.0 dose was selected for further ileal fermentations. Starch and pectin showed similar (<em>P</em>&gt;0.05) values of gas production rate and maximal gas production rate when they were fermented with caecal digesta (0.038 vs. 0.043%/h, and 13.7 vs. 15.2 mL/h, respectively), soft (0.022 vs. 0.031%/h, and 9.97 vs. 9.33 mL/h) and hard faeces (0.031 vs. 0.038%/h, and 13.6 vs. 10.8 mL/h), and values were higher than those for SBP and wheat straw; in contrast, values for starch and pectin differed with the ileal inoculum (0.046 vs. 0.024%/h, and 18.4 vs. 6.60 mL/h). Both ileal and caecal gas production parameters were well correlated with those for hard and soft faeces inocula, respectively (r≥0.77; <em>P</em>≤0.040). The ileal inoculum showed a relevant fermentative potential, but lower than that of caecal digesta and soft and hard faeces for all substrates except wheat starch.</p>

scholarly journals Inclusion of crude glycerin with different roughages changes ruminal parameters and in vitro gas production from beef cattle

2016 ◽  
Vol 46 (5) ◽  
pp. 889-894 ◽  
Author(s):  
Josimari Regina Paschoaloto ◽  
Jane Maria Bertocco Ezequiel ◽  
Marco Túlio Costa Almeida ◽  
Vanessa Ruiz Fávaro ◽  
Antonio Carlos Homem Junior ◽  
...  
Keyword(s):  
Dry Matter ◽  
Latin Square ◽  
Nutrient Utilization ◽  
Gas Production ◽  
Corn Silage ◽  
Biodiesel Production ◽  
Crude Glycerin ◽  
Ruminal Fermentation ◽  
Nellore Cattle

ABSTRACT: The increasing availability of crude glycerin from biodiesel production has generated great stock in the industries. To solve this problem, crude glycerin is being used as an energy source to replace corn in livestock diets. This study evaluated the effects of the association of crude glycerin (10% on DM of diets) with different roughages in Nellore cattle diets on ruminal pH and ammonia, degradability, digestibility of dry matter and nutrients, and greenhouse gas production. Six ruminally cannulated Nellore steers were assigned to a 6×6 Latin square design. The following treatments were evaluated: Hydrolyzed Sugarcane associated or not with crude glycerin, Corn Silage associated or not with crude glycerin or Tifton-85 Hay associated or not with crude glycerin. Association of crude glycerin with roughages did not affect the rumen ammonia concentration and pH and dry matter intake, but reduced the intake of NDF for diets with Hydrolyzed Sugarcane and Corn Silage and reduced the digestibility of DM, OM, NDF, EE, CNF and starch and decreased the effective degradation at the rate of 8% h-1 for diets with Tifton-85 Hay. The association crude glycerin with Hydrolyzed Sugarcane reduced the production of CH4 and CO2 in mL g-1 of DM. The inclusion of crude glycerin affects differently nutrient utilization in diets with Corn Silage, Hydrolyzed Sugarcane or Tifton-85 hay. Moreover, promotes mitigation of greenhouse gases in diets with Hydrolyzed Sugarcane. Association of crude glycerin with Corn Silage in Nellore cattle diets showed better conditions of ruminal fermentation and utilization of nutrients.

Anaerobic Digestion of Cheese Whey, Poultry Waste and Cattle Dung – A Study of the Use of Mixture of Adsorbents and/or Surfactants to Improve Digester Performance

1994 ◽  
Vol 5 (4) ◽  
pp. 379-385
Author(s):  
Manik Desai ◽  
Datta Madamwar
Keyword(s):  
Anaerobic Digestion ◽  
Silica Gel ◽  
Cheese Whey ◽  
Gas Production ◽  
Cattle Dung ◽  
Process Performance ◽  
Poultry Waste ◽  
Maximum Enhancement ◽  
Anaerobic Digestion Process ◽  
Digestion Process

This paper describes the improvement of anaerobic digestion process due to the addition of various surfactants and adsorbents in different combinations. Among the different combinations tested mixture of silica gel (2000 mg litre–1) and sodium lauryl sulphate (300 mg litre–1) showed maximum enhancement in gas production as well as methane content indicating better process performance.

scholarly journals Estimation of greenhouse gas emissions from landfills: application to the Akrotiri landfill site (Chania, Greece)

2013 ◽  
Vol 12 (1) ◽  
pp. 108-116 ◽  
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Production Rate ◽  
Biogas Production ◽  
Landfill Gas ◽  
Gas Production ◽  
Landfill Site ◽  
Gas Emissions ◽  
Biogas Production Rate

Landfilling is one of the most common ways of municipal solid waste (MSW) disposal in developing countries. Air pollutants emitted from landfills contributes to the emission in the atmosphere of greenhouse gases and cause serious problems to the human health. Methane emission from landfill is serious environmental global concern as it accounts for approximately 15 percentages of current greenhouse gas emissions. The current study was focused on the determination of air emissions from the Akrotiri landfill site which is located at the Akrotiri area (Chania, Greece). The models used are the triangular model, the stoichiometric model and LandGEM model. These models are used to estimate the total landfill gas production from a given amount of waste. The models differ on their scientific approach for the quantification on emissions, their complexity and input data requirements. The LandGEM model was selected for the determination of more representative assessed landfill gas emission rates. The maximum biogas production rate by the LandGEM model was calculated to be 1.64× 103 Mg yr-1 and was observed during the year 2008 for the A phase of the landfill, while for the B phase the maximum biogas production rate was 2.70 × 103 Mg yr-1 and was observed during 2014.

scholarly journals The ManureEcoMine pilot installation: advanced integration of technologies for the management of organics and nutrients in livestock waste

2016 ◽  
Vol 75 (6) ◽  
pp. 1281-1293 ◽  
Author(s):  
Cristina Pintucci ◽  
Marta Carballa ◽  
Sam Varga ◽  
Jimena Sarli ◽  
Lai Peng ◽  
...  
Keyword(s):  
Production Rate ◽  
Biogas Production ◽  
Liquid Fraction ◽  
Swine Manure ◽  
Integrated Approach ◽  
Gas Production ◽  
Phosphorus Recovery ◽  
Organic Loading Rate ◽  
Livestock Waste ◽  
Nitrogen And Phosphorus

Manure represents an exquisite mining opportunity for nutrient recovery (nitrogen and phosphorus), and for their reuse as renewable fertilisers. The ManureEcoMine proposes an integrated approach of technologies, operated in a pilot-scale installation treating swine manure (83.7%) and Ecofrit® (16.3%), a mix of vegetable residues. Thermophilic anaerobic digestion was performed for 150 days, the final organic loading rate was 4.6 kgCOD m−3 d−1, with a biogas production rate of 1.4 Nm3 m−3 d−1. The digester was coupled to an ammonia side-stream stripping column and a scrubbing unit for free ammonia inhibition reduction in the digester, and nitrogen recovery as ammonium sulphate. The stripped digestate was recirculated daily in the digester for 15 days (68% of the digester volume), increasing the gas production rate by 27%. Following a decanter centrifuge, the digestate liquid fraction was treated with an ultrafiltration membrane. The filtrate was fed into a struvite reactor, with a phosphorus recovery efficiency of 83% (as orthophosphate). Acidification of digestate could increment the soluble orthophosphate concentration up to four times, enhancing phosphorus enrichment in the liquid fraction and its recovery via struvite. A synergistic combination of manure processing steps was demonstrated to be technologically feasible to upgrade livestock waste into refined, concentrated fertilisers.

scholarly journals Effects of Pretreatment and Ratio of Solid Sago Waste to Rumen on Biogas Production through Solid-State Anaerobic Digestion

2021 ◽  
Vol 13 (13) ◽  
pp. 7491
Author(s):  
Siswo Sumardiono ◽  
Gebyar Adisukmo ◽  
Muthia Hanif ◽  
Budiyono Budiyono ◽  
Heri Cahyono
Keyword(s):  
Anaerobic Digestion ◽  
Production Rate ◽  
Microbial Consortium ◽  
Biogas Production ◽  
Biological Pretreatment ◽  
Metabolic Balance ◽  
Digestion Process ◽  
Potential Source ◽  
Sago Waste ◽  
Biogas Production Rate

Solid sago waste is a potential source of producing renewable energy in the form of biogas. This study investigated the effects of solid sago waste particle size, biological pretreatment using a microbial consortium of lignocelluloses, pretreatment with NaOH, and the ratio between solid sago waste and cow rumen based on the biogas production rate. Several variations of these conditions were used to achieve this. The anaerobic digestion process was conducted over two months at 30.42 °C ± 0.05 °C, and the biogas production rate was measured every two days. The 1:1 ratio showed better results compared to the 2:1, because it allows the bacteria to achieve metabolic balance. The highest cumulative biogas production (27.91 mL/g TS) was generated when the sago waste underwent milling (±1 mm), pretreatment with 4% NaOH g/g TS, and treatment with microbial consortium 5% v/v at a 1:1 ratio of solid sago waste to the rumen.

Sign in / Sign up

Export Citation Format

Share Document