scholarly journals Quantity and Quality of Biogas Produced from the Poultry Sludge Optimized by Filamentous Fungi

2018 ◽  
Vol 25 (3) ◽  
pp. 395-404 ◽  
Author(s):  
Ilona Wrońska ◽  
Krystyna Cybulska
Keyword(s):  
Filamentous Fungi ◽  
Biogas Production ◽  
Raw Material ◽  
Metabolic Potential ◽  
Waste Products ◽  
Biogas Yield ◽  
Biological Sludge ◽  
Poultry Processing ◽  
Fungal Consortium ◽  
Pre Treatment

Abstract One of the methods for recovery and utilization of waste products from the poultry industry is to subject them to the methane fermentation process in the biogas plant. These are waste with a high content of fatty compounds and proteins, including keratin. Their specificity is characterized by rapid possibility of spoilage, rancidity and problems of further management. These wastes are characterized by varying degrees of complexity, thus their use as a raw material for the biogas fermenter should be preceded by a pre-treatment. An example of waste generated in poultry processing is biological sludge. Optimizing this material with highly enzymatic fungi could accelerate the degradation of the organic matter contained and, as a result, increase the energy efficiency of this type of waste. Quantitative and qualitative parameters of biogas produced from biological sludge processed by isolated filamentous fungi with high metabolic potential were determined. Laboratory tests were based on the modified methodology included in the standards DIN 38414-S8 and VDI 4630. Based on the results obtained, it was found that the pre-optimization of biological sludge by fungal strains with different metabolic potential, influences on the yield of biogas production, including methane. There was an increase in the biogas yield from the biological sludge processed by the mixed fungal consortium (by 20 %) and the strain marked as F1 (by 14 %) as compared to the non-inoculated material, which was also reflected in the amount of methane produced in the case of the mixed fungal consortium (by 28 %) and the strain marked as F1 (by 12 %).

Biodegradation mechanism of biogas production by modified rice straw fermentation

BioResources ◽  
2020 ◽  
Vol 15 (4) ◽  
pp. 8862-8882
Author(s):  
Enhai Liu ◽  
Baozhong Zhu ◽  
Shengyong Liu ◽  
Hailong Yu ◽  
Zhiping Zhang ◽  
...  
Keyword(s):  
Rice Straw ◽  
Biogas Production ◽  
Raw Materials ◽  
Degradation Mechanism ◽  
Raw Material ◽  
White Rot ◽  
Control Group ◽  
Biogas Yield ◽  
Optimal Ratio ◽  
Pre Treatment

Based on the literature on the degradation mechanism and the change of micro-functional groups in the fermentation process of modified rice straw, this study aimed to solve the problems of low biogas production rate and poor stability of the biogas production system. In this work, mathematical equations were developed and combined with duck dung and rice straw mixed raw material to perform a fermentation test. The molecular micro-functional group changes of cellulose, hemicellulose, and lignin were studied to obtain the optimal ratio of mixed raw materials for fermentation and to explore the optimization mechanism of its fermentation biogas production. Experimental results showed that the optimal ratio of mixed raw materials was 2.8:1, and the inclusion of a suitable amount of Mn2+(concentration of 2 mol × L-1) was able to strengthen MnP activity and improve the ability of white-rot fungi to rupture β-O-4 bonds. A modification pre-treatment via activated carbon-based solid acid was performed, and the experimental group generated 15.8% more cumulative biogas than the control group. The biogas yield reached its peak when 300 g of inoculum was added to the pre-treatment at a concentration of 30%.

scholarly journals Opportunity of Biogas Production from Solid Organic Wastes through Anaerobic Digestion

2018 ◽  
Vol 65 ◽  
pp. 05025 ◽  
Author(s):  
Sagor Kumar Pramanik ◽  
Fatihah Binti Suja ◽  
Biplob Kumar Pramanik ◽  
Shahrom Bindi Md Zain
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Nutrient Balance ◽  
Organic Wastes ◽  
Organic Loading Rate ◽  
Biogas Yield ◽  
Carbon And Nitrogen ◽  
Potential Risks ◽  
Nitrogen Ratio ◽  
Pre Treatment

Solid organic wastes create potential risks to environmental pollution and human health due to the uncontrolled discharge of huge quantities of hazardous wastes from numerous sources. Now-a-days, anaerobic digestion (AD) is considered as a verified and effective alternative compared to other techniques for treating solid organic waste. The paper reviewed the biological process and parameters involved in the AD along with the factors could enhance the AD process. Hydrolysis is considered as a rate-limiting phase in the complex AD process. The performance and stability of AD process is highly influenced by various operating parameters like temperature, pH, carbon and nitrogen ratio, retention time, and organic loading rate. Different pre-treatment (e.g. mechanical, chemical and biological) could enhance the AD process and the biogas yield. Co-digestion can also be used to provide suitable nutrient balance inside the digester. Challenges of the anaerobic digestion for biogas production are also discussed.

scholarly journals Effect of corn straw pretreatment on efficiency of biogas production process: Computer simulation

2020 ◽  
Vol 18 (4) ◽  
pp. 561-564
Author(s):  
Anja Antanasković ◽  
Maja Bulatović ◽  
Marica Rakin ◽  
Zorica Lopičić ◽  
Tatjana Šoštarić ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Production Process ◽  
Biogas Production ◽  
Agricultural Waste ◽  
Raw Material ◽  
Corn Straw ◽  
Material Degradation ◽  
Biogas Yield ◽  
Process Computer ◽  
The Impact

Anaerobic digestion is a natural process of organic material degradation by different kinds of microorganisms in the absence of oxygen. This process is used for industrial purpose to manage waste streams or to produce biogas. It gives a major contribution in reduction of harmful effects of organic waste disposal to the environment. The aim of agricultural waste pretreatment in biogas production is to decrease the retention time, improve utilization of raw material and improve the overall productivity and energy efficiency of the production process. In this paper the effects of combined chemical and mechanical pretreatment of corn straw biomass on biogas yield during anaerobic digestion of the feedstock were analyzed. The impact of pretreatment and process parameters in biogas production was analyzed by process simulation using the software SuperPro Designer. Using this tool, it was shown that alkaline pretreatment leads to an decrease of degradation time along with an increase in biogas yield.

A Study on Dry Anaerobic Fermentation Technology of Pineapple Leaf Residue

2011 ◽  
Vol 236-238 ◽  
pp. 178-182
Author(s):  
Yi Guo Deng ◽  
Jin Li Wang ◽  
Jing Jiao ◽  
Yong Zheng ◽  
Gang Wang ◽  
...  
Keyword(s):  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Orthogonal Experiment ◽  
Gas Production ◽  
Inoculum Size ◽  
Solid Content ◽  
Raw Material ◽  
Biogas Yield ◽  
Fermentation Temperature ◽  
Leaf Residue

A self-designed constant temperature fermenter was manufactured and used for this study. Dry anaerobic fermentation experiments were conducted with sugarcane leaf residue as raw material. With the C/N ratio being 25:1, various total solids concentrations (TS), inoculum sizes and fermentation temperatures were selected to study biogas production characteristics. The experiment results showed that biogas yield increased rapidly during the initial stage of reaction, decreased quickly after reaching the peak, and the decrease slowed down at some level. Orthogonal experiment results showed that both fermentation temperature and solids concentration showed significant effects on gas production yield. Fermentation temperature showed the most significant effect, while the effect of inoculum size was not significant on gas yield. The optimum fermentation performance was obtained at 20% solid content, 35°C fermentation temperature, and 30% inoculum size.

Screening of Factors Affecting Pre-Treatment by Ammonia-N Removal from Poultry Manure Wastewater by Using Soil Water to Improve Biogas Production

2015 ◽  
Vol 1107 ◽  
pp. 359-364
Author(s):  
Nina Farhana Mohd Jamaludin ◽  
Norazwina Zainol
Keyword(s):  
Reaction Time ◽  
Soil Water ◽  
Treatment Condition ◽  
Biogas Production ◽  
Peat Soil ◽  
Poultry Manure ◽  
Factors Affecting ◽  
Biogas Yield ◽  
N Removal ◽  
Pre Treatment

In this study, best pre-treatment condition of poultry manure wastewater (PMW) was determined from factorial analysis for the purpose of improving biogas production. Five factors were chosen for factorial screening namely: agitation (0 or 200 rpm), reaction time (2 to 5 hours), type of soil (peat soil or poultry farm soil), soil to water ratio (1:1 or 1:4) and PMW to soil water (SW) ratio (1:4 or 2:3). Based on the result, agitation gave highest contribution in pre-treatment of PMW at 38.36% followed by PMW to SW ratio at 29.76% contribution. In term of interaction, agitation and reaction gave the highest contribution to pre-treatment of PMW at 3.33% contribution. The best pre-treatment condition suggested by Design Expert software was using peat soil as source of soil at SW ratio of 1:6, and mixed with PMW at 1:4 ratio without agitation for 5 hours reaction time. Application of this best pre-treatment condition showed improvement in biogas yield by 82 % from 0.0045 L/g COD using untreated PMW to 0.0248 L/g COD using treated PMW.

scholarly journals Influence of Microwave Pre-Treatment on the Digestion and Higienisation of Waste Activated Sludge/Wpływ Dezintegracji Mikrofalowej Na Proces Fermentacji Oraz Higienizacji Nadmiernych Osadów Ściekowych

2014 ◽  
Vol 21 (3) ◽  
pp. 447-464 ◽  
Author(s):  
Jolanta Bohdziewicz ◽  
Mariusz Kuglarz ◽  
Klaudiusz Grűbel
Keyword(s):  
Anaerobic Digestion ◽  
Microwave Irradiation ◽  
Treatment Effectiveness ◽  
Biogas Production ◽  
Salmonella Spp ◽  
Biogas Yield ◽  
Treatment Conditions ◽  
Higher Power ◽  
Pre Treatment ◽  
Treatment Step

Abstract The article presents the results of determining the most appropriate conditions of microwave sludge pre-treatment (500-1200 W), prior to its anaerobic digestion in a continuous mode. The assessment of the pre-treatment conditions (microwave power, sludge temperature after pre-treatment) was based on: the release of organic (COD, protein) and inorganic (NH4+, PO43-) substances into liquid, the quantity of methane produced, sludge higienisation and the susceptibility of the pre-treated sludge to dewatering. The power of the microwaves applied did not play significant role on the pre-treatment effectiveness. Taking into account the fact that sludge pre-treatment by microwave irradiation requires the delivery of energy, the pre-treatment by microwaves of higher power (1200 W) and resulting in sludge temperature of 70°C was recommended for further experiments. Sludge pre-treatment by means of microwave irradiation as a pre-treatment step influenced the effectiveness of the subsequent anaerobic digestion, conducted in continuous conditions, in a positive way. The largest amount of biogas was obtained for HRT in the range of 15-20 days. As compared to the sludge which did not undergo pre-treatment, daily biogas production and biogas yield increased by 18-41% and 13-35% respectively. The combination of microwave pre-treatment and mesophilic anaerobic digestion ensured the elimination of pathogens (Salmonella spp., Escherichia coli).

scholarly journals Increasing Biogas Yield from Fodder by Microbial Stimulation of Propionic Acid Synthesis in Grass Silages

Energies ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2843
Author(s):  
Krystyna Zielińska ◽  
Agata Fabiszewska ◽  
Katarzyna Piasecka-Jóźwiak ◽  
Renata Choińska
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Propionic Acid ◽  
Biogas Production ◽  
Raw Materials ◽  
Raw Material ◽  
Individual Species ◽  
Agricultural Practice ◽  
Biogas Yield

A new direction in the use of lactic acid bacteria inoculants is their application for renewable raw materials ensiling for biogas production. The aim of the study was to demonstrate the possibility of stimulating the synthesis of propionic acid in the process of co-fermentation of selected strains of Lactobacillus buchneri and L. diolivorans as well as L. buchneri and Pediococcus acidilactici. L. buchneri KKP 2047p and P. acidilactici KKP 2065p were characterized by the special capabilities for both synthesis and metabolism of 1,2-propanediol. L. diolivorans KKP 2057p stands out for the ability to metabolize 1,2-propanediol to propionic acid. As a result of the co-fermentation a concentration of propionic acid was obtained at least 1.5 times higher in the final stage of culture in comparison to cultivating individual species of bacteria separately. The results of in vitro experiments were applied in agricultural practice, by application of two lactic acid bacteria inoculants in ensiling of grass silage and improving its suitability for biogas production. Grass silages made with the addition of the inoculant were characterized by the content of 1,2-propanediol, 1-propanol and propionic acid ensured extension of the aerobic stability from 4 to 7 days in comparison to untreated silages. It was found that the use of both inoculants resulted in an approximately 10 - 30% increase in biogas yield from this raw material.

Experimental Study on Energy Conversion Efficiency of Biogas Fermentation of Sorghum Distilled Residue Based on Properties of Raw Materials

2013 ◽  
Vol 675 ◽  
pp. 374-378
Author(s):  
Bin Yang ◽  
Fa Gen Yang ◽  
Wu Di Zhang ◽  
Fang Yin ◽  
Xing Ling Zhao ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Conversion Efficiency ◽  
Biogas Production ◽  
Raw Materials ◽  
Clean Energy ◽  
Energy Conversion Efficiency ◽  
Raw Material ◽  
Fermentation Time ◽  
Heating Value ◽  
Biogas Yield

In order to gain biogas production potential and energy conversion efficiency of biogas fermentation of sorghum distilled residue (SDR), the anaerobic batch fermentation experiments were performed at 30 degrees Celsius. After experiments, we got experimental results as follows: biogas production of SDR during total fermentation time of 28days is 2885mL; properties of raw materials including: TS is 88.58%, VS is 16.69%, heating value is 15.684kJ/g, TS biogas yield is 220mL/g, VS biogas yield is 1300ml/g, raw material biogas yield is 190mL/g, and energy conversion efficiency of biogas fermentation of SDR is 30.38%. The results indicate that biogas fermentation is an effective new method to recycle clean energy from SDR.

scholarly journals CONVERSION TO BIOGAS OF HERBACEOUS PLANTS, USED FOR OIL HYDROCARBONS CONTAMINATED SOILS CLEANING

2018 ◽  
Author(s):  
Mantas RUBEŽIUS ◽  
Kęstutis VENSLAUSKAS ◽  
Kęstutis NAVICKAS
Keyword(s):  
Contaminated Soils ◽  
Plant Biomass ◽  
Biogas Production ◽  
Renewable Energy Sources ◽  
Energy Conversion Efficiency ◽  
Raw Material ◽  
Herbaceous Plants ◽  
Herbaceous Plant ◽  
Soil System ◽  
Biogas Yield

Fossil fuel demand growth in and price fluctuation, depletion resources and supply monopolize, climate change is forcing the restructuring of energy and other industrial and transport area, seeking for renewable energy sources. Using phytoremedial methods in biomass engineering, there is a possibility to create a sustainable method of biomass growth in mid-low contaminated sites soil system. Main aim of the research was to assess the oil-contaminated soil treatment herbaceous plants and their subsequent use for biogas production in order to create a closed cleaning and plant biomass utilization cycle. After the evaluation of the biogas yield and energy conversion efficiency performance it was found that all of the selected herbaceous plant biomass is suitable as raw material for the production of biogas. The biogas potential of selected plants ranged from 377.2 to 822.9 l/kg dry organic matter with an energy value ranging from 7.1 MJ/kg to 17.1 MJ/kg.

scholarly journals APLIKASI THERMAL PRE-TREATMENT LIMBAH TANAMAN JAGUNG (Zea mays) SEBAGAI CO·SUBSTRAT PADA PROSES ANAEROBIK DIGESTI UNTUK PRODUKSI BIOGAS

2016 ◽  
Vol 36 (01) ◽  
pp. 79
Author(s):  
Darwin Darwin ◽  
Yusmanizar Yusmanizar ◽  
Muhammad Ilham ◽  
Afrizal Fazil ◽  
Satria Purwanto ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Corn Stover ◽  
Biogas Production ◽  
Lag Phase ◽  
Total Production ◽  
Biogas Yield ◽  
Anaerobic Digestion Process ◽  
Digestion Process ◽  
Volatile Solids ◽  
Pre Treatment

Thermal pre-treatment was given on corn stover in the purpose of breaking the lignin content; thus, it may help anaerobic microorganisms to convert polymer including cellulose and hemicelluloses into biogas. This study aimed to investigate the effects of thermal pre-treatment on corn stover in anaerobic digestion process related to the production of biogas as well as digestion process efficiency. This research was carried out by utilizing batch reactors where the temperature was maintained at mesophilic conditions above room temperature (33 ± 2 oC). Based on the result, it was known that thermal pre-treatment given on the corn stover may enhance anaerobic digestion process for biogas production at the first 10 days. This condition reduced the time of lag phase during anaerobic digestion. The biogas production of corn stover given thermal pre-treatment was slow at 26 days where their average total production were 12,412.5 mL,12,310 mL at 15 and 25 minutes thermal pre-treatment, respectively while biogas production of non pre-treated corn stover was 12,557 mL. The highest daily biogas production was accomplished by corn stover that was given thermal pre-treatment at 25 minutes (915 mL). Corn stover given with 15 minutes thermal pre-treatment also generated higher daily biogas production at day 9 (772.5 mL) compared with corn stover that was not pre-treated (405 mL). This research also revealed that corn stover given thermal pre-treatment reached higher biogas yield compared with non pre-treated corn stover where their biogas yield were 670.39, 690.65 mL/g volatile solids added at 15 and 25 minutes thermal pre- treatment respectively, and 456.37 mL/g volatile solids added of non pre-treated corn stover.Keywords: Thermal pre-treatment, corn stover, anaerobic digestion, biogas ABSTRAKThermal pre-treatment diberikan pada limbah tanaman jagung dengan tujuan untuk memecahkan kandungan lignin yang terdapat pada limbah tanaman jagung sehingga memudahkan mikroorganisme anaerobik untuk mengkonversi polimer yang berupa selulosa dan hemiselulosa menjadi biogas. Tujuan dari penelitian ini adalah untuk melakukan kajian mengenai penerapan thermal pre-treatment pada limbah tanaman jagung terhadap proses anaerobik digesi yang meliputi efisiensi proses digesi dan produksi biogas yang dihasilkan. Penelitian ini dilakukan dengan menggunakan reaktor tipe batch yang suhunya dipertahankan pada kondisi mesophilic atau di atas rata-rata suhu kamar (33 ± 2 oC). Hasil penelitian diperoleh bahwa thermal pre-treatment yang diberikan pada limbah tanaman jagung mampu mempercepat proses produksi biogas pada 10 hari pertama sehingga dapat mengurangi lag-phase pada proses anaerobik digesi. Limbah tanaman jagung yang diberikan thermal pre-treatment mengalami perlambatan produksi biogas pada hari ke 26 dengan rata-rata total produksi 12.412,5 mL untuk limbah tanaman jagung yang diberikan thermal pre- treatment selama 15 menit, dan 12.310 mL untuk limbah tanaman jagung yang diberikan thermal pre-treatment selama 25 menit, sedangkan limbah tanaman jagung yang tidak diberikan pre-treatment menghasilkan produksi biogas sebesar 12.557 mL pada hari ke 26. Produksi biogas harian tertinggi terjadi pada substrat yang diberikan thermal pre-treatment 25 menit, dengan produksi biogas tertinggi pada hari ke 9 dengan rata-rata produksi sebesar 915 mL. Substrat yang diberikan thermal pre-treatment 15 menit juga memproduksi biogas jauh lebih tinggi (772,5 mL) pada hari ke 9 jika dibandingkan dengan substrat tanpa diberikan pre-treatment yang hanya memproduksi biogas sebesar 405 mL. Data hasil penelitian menunjukkan bahwa limbah tanaman jagung yang diberikan thermal pre-treatment memperoleh biogas yield lebih tinggi dari pada yang tidak diberikan pre-treatment dimana 670,39 mL/g volatile solids untuk thermal pre- treatment 15 menit, 690,65 mL/g volatile solids untuk thermal pre-treatment 25 menit dan 456,37 mL/g volatile solids untuk limbah tanaman jagung yang tidak diberikan pre-treatment.Kata kunci: Thermal pre-treatment, limbah tanaman jagung, anaerobik digesi, biogas

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