The forecast of biogas production from rice straw to cover the energy demand for a rice mill

The rising of global energy demand has led to an energy crisis, especially fossil energy. The development of renewable energies is needed to overcome the energy crisis. Biogas is one of renewable energies (biofuels) which is developed to minimize the dependency on fossil fuels. Biogas can be derived from agricultural wastes such as rice straw. The aim of this research was to compare the kinetic models of biogas production form rice straw using the linear and exponential equations models. This research was conducted at the total solid (TS) content of 20%, 22% and 24%. The result showed that the exponential equation had a better correlation than the linear equation on the ascending period of biogas production, while linear equation was better than exponential equation during descending period.

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Compositional Assessment of Selected Plant-based Substrates for Biogas Production

Journal of Advances in Biology & Biotechnology ◽

10.9734/jabb/2021/v24i330202 ◽

2021 ◽

pp. 1-6

Author(s):

Ugwu Tochukwu Nicholas ◽

Nwachukwu Augusta Anuli ◽

Ogbulie Toochukwu Ekwutosi ◽

Anyalogbu Ernest Anayochukwu

Keyword(s):

Rice Straw ◽

Water Hyacinth ◽

Energy Demand ◽

Plant Biomass ◽

Biogas Production ◽

Primary Source ◽

Modern World ◽

Corn Cob ◽

Biogas Yield ◽

Corn Cobs

Enormous quantities of plant biomass are generated annually, as agricultural wastes. Lignocellulose is the main structural constituent of plants and represents the primary source of renewable organic matter on earth. This study was carried out to evaluate the lignocellulose composition, proximate and selected physicochemical characteristics of some selected plant-based substrates for biogas production. The substrates were: Corn cobs, Rice straw and Water hyacinth (Eichhorniacrassipes). They were collected, cut, dried for 72 hours at 320C, milled and subjected to hemicellulose, lignin and cellulose compositional analyses, using the standard Sox let extraction method. Standard methods were employed for proximate and physicochemical analyses. Results of the compositional evaluation showed that corn cob has the highest percentages of cellulose (42.0%), while extractives content was least (2.18%) in Rice straw. For the proximate analysis, the percentage carbohydrates (24.22) and ash (24.40) were highest in rice straw, while fat content had the least values of 0.65% recorded in corn cobs. The results of the physicochemical analysis showed that Rice straw had the highest values of TS (94.55%) and phosphorus (928.57mg/kg), Corn cob had the highest TVS (85.53%) and organic carbon (50.46%) while Water hyacinth recorded the highest Nitrogen content (2.33%). They are good substrates for energy generation, and lignocellulosic biomass holds a huge potential to meet the current energy demand of the modern world. The knowledge of the lignocellulosic composition of the biomass would help in choosing appropriate pretreatment measures to achieve better hydrolysis which would translate to higher biogas yield.

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

Biomass Conversion and Biorefinery ◽

10.1007/s13399-020-01249-0 ◽

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.

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Enhancing Anaerobic Digestion: The Effect of Carbon Conductive Materials

C – Journal of Carbon Research ◽

10.3390/c4040059 ◽

2018 ◽

Vol 4 (4) ◽

pp. 59 ◽

Cited By ~ 15

Author(s):

Judith González ◽

Marta Sánchez ◽

Xiomar Gómez

Keyword(s):

Anaerobic Digestion ◽

Energy Demand ◽

Biogas Production ◽

Global Energy ◽

Conductive Materials ◽

Different Types ◽

Interesting Approach ◽

Feasible Alternative

Anaerobic digestion is a well-known technology which has been extensively studied to improve its performance and yield biogas from substrates. The application of different types of pre-treatments has led to an increase in biogas production but also in global energy demand. However, in recent years the use of carbon conductive materials as supplement for this process has been studied resulting in an interesting way for improving the performance of anaerobic digestion without greatly affecting its energy demand. This review offers an introduction to this interesting approach and covers the different experiences performed on the use of carbon conductive materials proposing it as a feasible alternative for the production of energy from biomass, considering also the integration of anaerobic digestion and thermal valorisation.

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Effect of initial pH on anaerobic co-digestion of Salvinia molesta and rice straw for biogas production and kinetics

Biocatalysis and Agricultural Biotechnology ◽

10.1016/j.bcab.2018.10.007 ◽

2018 ◽

Vol 16 ◽

pp. 594-603 ◽

Cited By ~ 15

Author(s):

Iqbal Syaichurrozi ◽

Suhirman Suhirman ◽

Topik Hidayat

Keyword(s):

Rice Straw ◽

Biogas Production ◽

Salvinia Molesta ◽

Initial Ph

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STUDY OF THE POTENTIAL ANAEROBIC CO-DIGESTION FOR BIOGAS PRODUCTION FROM SALVINIA MOLESTA AND RICE STRAW

Jurnal Bahan Alam Terbarukan ◽

10.15294/jbat.v6i1.9017 ◽

2017 ◽

Vol 6 (1) ◽

pp. 61-67

Author(s):

Iqbal Syaichurrozi

Keyword(s):

Rice Straw ◽

Room Temperature ◽

Fermentation Process ◽

Biogas Production ◽

Rumen Fluid ◽

Salvinia Molesta ◽

Initial Ph

The purpose of this research was to analyze the biogas production from co-digestion of Salvinia molesta and rice straw. Ratio of Salvinia molesta and rice straw was 5:0, 4:1, 3:2. Lab-scale-batch digesters (600 mL) were operated at room temperature (30 oC) and pressure of 1 atm. Total basis of Salvinia molesta and rice straw was 10 gr, water was added with ratio of organic matter:water = 1:7 (w/w), rumen fluid was added as inoculum, initial pH was adjusted to be 7. Fermentation process was conducted for 30 days. The results showed that total biogas volume for ratio of 5:0, 4:1, 3:2 was 6.300.00; 32.7618.32; 107.5418.51 mL/g VS respectively. The pH of substrate was changing from 7.00 to 6.770.19; 6.600.14; 6.730.09 for all variables respectively.

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Enhancement of Biogas Production from Anaerobic Co-Digestion of Rice Straw and Thickened Waste Activated Sludge with Hydrodynamic Cavitation Pretreatment

10.1109/icrera52334.2021.9598484 ◽

2021 ◽

Author(s):

Hani Ezz ◽

Mahmoud Nasr ◽

Manabu Fujii ◽

Mona. G Ibrahim

Keyword(s):

Activated Sludge ◽

Rice Straw ◽

Biogas Production ◽

Hydrodynamic Cavitation ◽

Waste Activated Sludge

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Modelling of Demand Driven Biogas Plants to Cover Residual Load Rises

Proceedings ◽

10.3390/proceedings2221385 ◽

2018 ◽

Vol 2 (22) ◽

pp. 1385 ◽

Cited By ~ 1

Author(s):

Lena Peters ◽

Piotr Biernacki ◽

Frank Uhlenhut ◽

Sven Steinigeweg

Keyword(s):

Reaction Time ◽

Energy Demand ◽

Energy Production ◽

Process Model ◽

Input Data ◽

Biogas Production ◽

Pi Controller ◽

Feeding Program ◽

Biogas Plants ◽

Flexible Operation

In future, systems for energy storage and demand-driven energy production will be essential to cover the residual load rises. A rigorous dynamic process model based on ADM1 was used to analyze the flexible operation of biogas plants for covering the residual load rises. This model was optimized and an operation concept for a demand-driven energy production was worked out. For the input data different substrates were analyzed by batch fermentations and the Weender analysis with van Soest method. The results show that the substrates have got a different biogas production rate and reaction time. Finally, an intelligent feeding algorithm by implementation of a PI controller was developed. It calculates feeding times and quantities of available substrates so that a defined energy demand can be covered by biogas plants. The results demonstrate that a flexible operation of biogas plants with an individual and intelligent feeding program is possible.

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