Pre-treatments to enhance biogas yield and quality from anaerobic digestion of whiskey distillery and brewery wastes: A review

2019 ◽  
Vol 113 ◽  
pp. 109281 ◽  
Author(s):  
Burcu Gunes ◽  
Joseph Stokes ◽  
Paul Davis ◽  
Cathal Connolly ◽  
Jenny Lawler
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Yield ◽  
Yield And Quality ◽  
Brewery Wastes

scholarly journals A Review of the Role of Critical Parameters in the Design and Operation of Biogas Production Plants

2019 ◽  
Vol 9 (9) ◽  
pp. 1915 ◽  
Author(s):  
Shiplu Sarker ◽  
Jacob J. Lamb ◽  
Dag R. Hjelme ◽  
Kristian M. Lien
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Real Life ◽  
Process Condition ◽  
Critical Parameters ◽  
Organic Loading Rate ◽  
Operational Parameters ◽  
Biogas Yield ◽  
Yield And Quality ◽  
Biogas Plants

Many operating parameters, individually or together, may influence the performance of anaerobic digestion towards biogas or digestate yield and quality maximization. The most preferred method of optimizing an anaerobic digestion plant often relies on how carefully the crucial parameters, such as pH, temperature, organic loading rate, hydraulic retention time, and pressure, are chosen. There is a large amount of literature available on optimization of anaerobic digestion; however, given the continued development and implementation of innovative technologies, together with the introduction of increasingly complex systems, it is necessary to update present knowledge on process parameters and their role on operational ranges and flexibilities in real-life anaerobic digestion system. Accordingly, the present review discusses the importance of the selection of operational parameters in existing technologies and their impact on biogas yield. Notably, the four broad areas of feedstock utilization (substrate, inoculum, codigestion and pretreatment), process condition (pH, temperature, pressure, and reactor design), reactor control (HRT and OLR) and inhibition (Ammonia and VFAs) are covered in this review. In addition, particular emphasis is placed on the most recent innovations that have been or may be implemented in current or future biogas plants.

scholarly journals Biogas potential of organic waste onboard cruise ships — a yet untapped energy source

2021 ◽  
Author(s):  
Kai Schumüller ◽  
Dirk Weichgrebe ◽  
Stephan Köster
Keyword(s):  
Energy Source ◽  
Anaerobic Digestion ◽  
Sewage Sludge ◽  
Food Waste ◽  
Energy Demand ◽  
Organic Waste ◽  
Biogas Production ◽  
Biogas Yield ◽  
Cruise Ships ◽  
Detailed Presentation

AbstractTo tap the organic waste generated onboard cruise ships is a very promising approach to reduce their adverse impact on the maritime environment. Biogas produced by means of onboard anaerobic digestion offers a complementary energy source for ships’ operation. This report comprises a detailed presentation of the results gained from comprehensive investigations on the gas yield from onboard substrates such as food waste, sewage sludge and screening solids. Each person onboard generates a total average of about 9 kg of organic waste per day. The performed analyses of substrates and anaerobic digestion tests revealed an accumulated methane yield of around 159 L per person per day. The anaerobic co-digestion of sewage sludge and food waste (50:50 VS) emerged as particularly effective and led to an increased biogas yield by 24%, compared to the mono-fermentation. In the best case, onboard biogas production can provide an energetic output of 82 W/P, on average covering 3.3 to 4.1% of the total energy demand of a cruise ship.

scholarly journals Biogas Production from Combined Irish Potato and Poultry Wastes: Optimization and Kinetic Studies

2018 ◽  
Vol 7 (3.36) ◽  
pp. 170
Author(s):  
Umar M. Ibrahim ◽  
Saeed I. Ahmed ◽  
Babagana Gutti ◽  
Idris M. Muhammad ◽  
Usman D. Hamza ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Kinetic Parameters ◽  
Ph Value ◽  
Biogas Production ◽  
Irish Potato ◽  
Coefficient Of Determination ◽  
Optimum Conditions ◽  
Biogas Yield ◽  
Potato Waste ◽  
Initial Ph

The combination of Irish potato waste (IPW) and poultry waste (PW) can form a synergy resulting into an effective substrate for a better biogas production due to some materials they contain. In this work, optimization and kinetic study of biogas production from anaerobic digestion of IPW and PW was investigated. Response surface methodology (RSM) was applied to optimize conditions such as initial pH, solids concentrations and waste ratios. The anaerobic digestion of the two wastes was carried out in the mesophilic condition and Box-Behnken design (BBD) was used to develop and analyze a predictive model which describes the biogas yield. The results revealed that there is a good fit between the experimental and the predicted biogas yield as revealed by the coefficient of determination (R2) value of 97.93%. Optimization using quadratic RSM predicts biogas yield of 19.75% at the optimal conditions of initial pH value 7.28, solids concentration (w/v) 9.85% and waste ratio (IPW:PW) 45:55%. The reaction was observed to have followed a first order kinetics having R2 and relative squared error (RSE) values of 90.61 and 9.63% respectively. Kinetic parameters, such as rate constant and half-life of the biogas yield were evaluated at optimum conditions to be 0.0392 day-1 and 17.68 days respectively. The optimum conditions and kinetic parameters generated from this research can be used to design real bio-digesters, monitor substrate concentrations, simulate biochemical processes and predict performance of bio-digesters using IPW and PW as substrate.  

scholarly journals Ampelodesmos Mauritanicus Pyrolysis Biochar in Anaerobic Digestion Process: Evaluation of the Biogas Yield

2017 ◽  
Author(s):  
Fabio Codignole Luz ◽  
Stefano Cordiner ◽  
Alessandro Manni ◽  
Vincenzo Mulone ◽  
Vittorio Rocco ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Process Evaluation ◽  
Biogas Yield ◽  
Anaerobic Digestion Process ◽  
Digestion Process

Influence of Ultrasound on the Synthesis of Biogas During Disposal of Beer Spent Grain

2021 ◽  
pp. 33-38
Author(s):  
Владимир Владимирович Житков ◽  
Борис Николаевич Федоренко
Keyword(s):  
Anaerobic Digestion ◽  
Energy Production ◽  
Biogas Production ◽  
Organic Substances ◽  
Ultrasonic Pretreatment ◽  
Biogas Yield ◽  
Spent Grains ◽  
Efficient Resource ◽  
Spent Grain ◽  
Environmentally Friendly Process

Ультразвуковая предварительная обработка считается экологически чистым процессом для повышения биоразлагаемости органических веществ при анаэробном сбраживании. Однако количество потребляемой энергии во время предварительной обработки является проблемой, особенно в тех случаях, когда производство энергии является основной целью биогазовой установки. Основной целью настоящего исследования работы было изучение эффективности ультразвуковой предварительной обработки для увеличения производства биогаза из отходов пивоваренного производства - пивной дробины. Результаты показали, что применение частоты 40 кГц при температуре 40 °С соответственно привело к увеличению выхода биогаза на 83%. Методология показала положительный результат в отношении содержания метана и скорости производства биогаза. Использование ультразвуковой предварительной обработки в отношении пивоваренной дробины для производства биогаза, по-видимому, позволяет решить проблемы не только эффективной утилизации пивоваренных отходов, но и создать экономически эффективный ресурс возобновляемой энергии на пивоваренном или аффилированном с ним производстве. Ultrasonic pretreatment is considered an environmentally friendly process to increase the biodegradability of organic substances during anaerobic digestion. However, the amount of energy consumed during pretreatment is a problem, especially in cases where energy production is the main purpose of the biogas plant. The main purpose of this study was to study the effectiveness of ultrasonic pretreatment to increase the production of biogas from brewing waste - brewer's grains. The results showed that the use of a frequency of 40 kHz at a temperature of 40 °C, respectively, led to an increase in the biogas yield by 83%. The methodology showed a positive result in terms of methane content and biogas production rate. The use of ultrasonic pretreatment for brewing spent grains for biogas production seems to solve the problems of not only efficient disposal of brewing waste, but also to create an economically efficient resource of renewable energy in brewing or its affiliated production.

scholarly journals Synthetic Effect of EDTA and Ni2+ on Methane Production and Microbial Communities in Anaerobic Digestion Process of Kitchen Wastes

Processes ◽  
2019 ◽  
Vol 7 (9) ◽  
pp. 590
Author(s):  
Tingting Zhong ◽  
Yali Liu ◽  
Xiaorong Kang
Keyword(s):  
Anaerobic Digestion ◽  
Propionic Acid ◽  
Methane Production ◽  
High Throughput Sequencing ◽  
Ethylenediaminetetraacetic Acid ◽  
Speciation Analysis ◽  
Water Soluble ◽  
Sequencing Analysis ◽  
Biogas Yield ◽  
Ni Addition

Batch tests were carried out to study the effect of simultaneous addition of ethylenediaminetetraacetic acid and Ni2+ (EDTA-Ni) on anaerobic digestion (AD) performances of kitchen wastes (KWs). The results indicated that the cumulative biogas yield and methane content were enhanced to 563.82 mL/gVS and 63.7% by adding EDTA-Ni, respectively, which were almost 1.15 and 1.07-fold of that in the R2 with Ni2+ addition alone. At the same time, an obvious decrease of propionic acid was observed after EDTA-Ni addition. The speciation analysis of Ni showed that the percentages of water-soluble and exchangeable Ni were increased to 38.8% and 36.3% due to EDTA-Ni addition, respectively. Also, the high-throughput sequencing analysis revealed that the EDTA-Ni promoted the growth and metabolism of Methanosarcina and Methanobacterium, which might be the major reason for propionic acid degradation and methane production.

scholarly journals Evaluation of Anaerobic Digestion of Dairy Wastewater in an Innovative Multi-Section Horizontal Flow Reactor

Energies ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2392 ◽  
Author(s):  
Marcin Dębowski ◽  
Marcin Zieliński ◽  
Marta Kisielewska ◽  
Joanna Kazimierowicz
Keyword(s):  
Wastewater Treatment ◽  
Anaerobic Digestion ◽  
Flow Reactor ◽  
Biogas Production ◽  
Oxygen Demand ◽  
Methane Content ◽  
Dairy Wastewater ◽  
Horizontal Flow ◽  
Organic Loading Rate ◽  
Biogas Yield

The aim of this study was the performance evaluation of anaerobic digestion of dairy wastewater in a multi-section horizontal flow reactor (HFAR) equipped with microwave and ultrasonic generators to stimulate biochemical processes. The effects of increasing organic loading rate (OLR) ranging from 1.0 g chemical oxygen demand (COD)/L·d to 4.0 g COD/L·d on treatment performance, biogas production, and percentage of methane yield were determined. The highest organic compounds removals (about 85% as COD and total organic carbon—TOC) were obtained at OLR of 1.0–2.0 g COD/L·d. The highest biogas yield of 0.33 ± 0.03 L/g COD removed and methane content in biogas of 68.1 ± 5.8% were recorded at OLR of 1.0 g COD/L·d, while at OLR of 2.0 g COD/L·d it was 0.31 ± 0.02 L/COD removed and 66.3 ± 5.7%, respectively. Increasing of the OLR led to a reduction in biogas productivity as well as a decrease in methane content in biogas. The best technological effects were recorded in series with an operating mode of ultrasonic generators of 2 min work/28 min break. More intensive sonication reduced the efficiency of anaerobic digestion of dairy wastewater as well as biogas production. A low nutrient removal efficiency was observed in all tested series of the experiment, which ranged from 2.04 ± 0.38 to 4.59 ± 0.68% for phosphorus and from 9.67 ± 3.36 to 20.36 ± 0.32% for nitrogen. The effects obtained in the study (referring to the efficiency of wastewater treatment, biogas production, as well as to the results of economic analysis) proved that the HFAR can be competitive to existing industrial technologies for food wastewater treatment.

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.

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