scholarly journals Biogas production potential of transgenic Vetiveria zizanioides in mesophilic batch anaerobic digestion

2014 ◽  
Vol 9 (9) ◽  
pp. 293-296 ◽  
Author(s):  
Sun Peipei ◽  
Zhang Wudi ◽  
Yin Fang ◽  
Zhao Xingling ◽  
Liu Jing ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Vetiveria Zizanioides ◽  
Production Potential

scholarly journals Potensi Biogas dan Pupuk dari Limbah Lumpur Kertas

REAKTOR ◽  
2017 ◽  
Vol 16 (3) ◽  
pp. 141
Author(s):  
Cindy Rianti Priadi ◽  
Iftita Rahmatika ◽  
Chihiya Fitria ◽  
Dwica Wulandari ◽  
Setyo Sarwanto Moersidik
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
High Growth ◽  
Resource Recovery ◽  
Heavy Metal Accumulation ◽  
Paper Sludge ◽  
Cow Manure ◽  
Vetiveria Zizanioides ◽  
Recovery Potential ◽  
Plant Grown

BIOGAS ENERGY AND FERTILIZING POTENTIAL FROM PAPER SLUDGE Paper sludge contains potential as energy and fertilizer due to the high amount of C, N and P. The aims of this study were to investigate resource recovery potential through biogas production from paper sludge only and with cow manure as co-substrate for 30-45 days in batch anaerobic digestion reactor. In addition, the fertilizer potential from digestate was also tested in Vetiveria zizanioides. Co-digestion with cow manure yielded higher methane gas up to 380 CH4/g VS due to a more optimum C/N ratio. Vetiver plants grown on digestate relatively showed the high growth performance after 4 weeks. The heavy metal accumulation from digestate was still in tolerable amount since the growth rate was not significantly different with the plant grown in fertilizer. Therefore, resource recovery technology can be an option to recover C, N and P in paper sludge to achieve sustainable waste management.  Keywords: ananerobic digestion; biogas;  fertilizer; paper sludge AbstrakLumpur dari Air Limbah industri kertas memiliki C, N dan P yang tinggi sehingga berpotensi menghasilkan energi dan menjadi pupuk, Penelitian ini bertujuan untuk meneliti pemulihan sumber daya (resource recovery) melalui produksi biogas dari lumpur kertas tanpa dan dengan ko-substrat kotoran sapi selama 30-45 hari dalam reaktor batch anaerobic digestion. Selanjutnya potensi pupuk dari digestat juga diuji dengan tumbuhan akar wangi (Vetiveria zizanioides). Setelah 45 hari, lumpur kertas dengan kotoran sapi menghasikan gas metana yang lebih besar, yaitu 380 CH4/g VS. Tanaman akar wangi yang ditanam dengan dengan digestat R2 tumbuh relatif tinggi setelah 4 minggu. Akumulasi logam berat juga masih dalam batas aman karena laju pertumbuhannya yang masih sebanding dengan tanaman yang diberi pupuk. Oleh karena itu, pemulihan sumber daya dapat diterapkan untuk memanfaatkan C, N dan P yang terkandung dalam lumpur kertas sebagai usaha pengelolaan limbah berkelanjutan.  Kata Kunci: biogas; digestasi anaerobik; lumpur kertas; pupuk 

scholarly journals Effect of Mechanical Pre-Treatment of the Agricultural Substrates on Yield of Biogas and Kinetics of Anaerobic Digestion

2018 ◽  
Vol 10 (10) ◽  
pp. 3669 ◽  
Author(s):  
Józef Szlachta ◽  
Hubert Prask ◽  
Małgorzata Fugol ◽  
Adam Luberański
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Gompertz Model ◽  
Model Parameters ◽  
Production Potential ◽  
Pre Treatment ◽  
Sorghum Silage ◽  
Kinetics Of ◽  
Degree Of Fragmentation ◽  
Modified Gompertz Model

The effect of mechanical pre-treatment of nine different agricultural substrates minced to particle sizes of 1.5 mm, 5 mm and 10 mm on biogas and methane yields and fermentation kinetics was investigated. The results showed, that for five of the nine tested substrates (grass, Progas rye, Palazzo rye, tall wheatgrass, beet), a higher biogas production was obtained for the degree of fragmentation of 10 mm compared to fragmentation of 5 mm and 1.5 mm. For fragmentation of 5 mm, the highest biogas production was achieved for sorghum silage, Atletico maize and Cannavaro maize—649.80, 735.59 and 671.83 Nm3/Mg VS, respectively. However, for the degree of fragmentation of 1.5 mm, the highest biogas production (510.43 Nm3/Mg volatile solid (VS)) was obtained with Topinambur silage. The modified Gompertz model fitted well the kinetics of anaerobic digestion of substrates and show a significant dependence of the model parameters Hmax (biogas production potential) and Rmax (maximum rate of biogas production) on the degree of substrate fragmentation.

scholarly journals Effects of Substrate to Inoculum Ration on Biogas Production from Anaerobic Co-digestion of Office Paper and Cow Manure

2019 ◽  
pp. 1-15
Author(s):  
Autumn R. Elniski ◽  
Siddharth G. Chatterjee ◽  
Chanchal Mondal ◽  
Klaus Doelle
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Time Lag ◽  
Industrial Applications ◽  
Process Models ◽  
Future Research ◽  
Model Parameters ◽  
Cow Manure ◽  
Production Potential ◽  
Office Paper

Anaerobic digestion can utilize renewable resources to produce energy in the form of biogas. Cow manure inoculum contains the microorganisms needed for this application and unrecycled paper waste can be used as a substrate. The use of these feedstocks together is not well studied. Finding ideal operating parameters and modelling biogas production is vital for future integration of anaerobic digestion. The use of various models when examining anaerobic digestion is important to ensure the best models are used for future research and industrial applications. Office paper and cow manure were combined at the different substrate to inoculum ratios with a total solids content of 6% at 38.4°C for 15 days. Four models (Time-Lag, No-Lag, Modified Gompertz, and Modified Logistic) were fitted to the experimental data to find which model best represented each biogas production process. Models varied in the accuracy of their fit to the data and no single model had the lowest RMSE values for each treatment. The digester containing a paper to manure ratio of 2:1 produced the most biogas (82 mL biogas/g VS), but the 5:1 reactor had the greatest biogas production potential over a longer period based on the model parameters (maximum cumulative biogas yield and biogas production potential). More biogas was produced in this study compared to other works reported in the literature, showing that this combination of co-digestion substrates could be expanded upon in the future. New models need to be examined or developed for these systems to better represent this co-digestion process for future research and commercial applications.

Experimental Study on Potential of Biogas Fermentation with Lily Straw

2012 ◽  
Vol 608-609 ◽  
pp. 396-401
Author(s):  
Hong Yang ◽  
Wu Di Zhang ◽  
Xing Ling Zhao ◽  
Jing Liu ◽  
Yu Bao Chen ◽  
...  
Keyword(s):  
Experimental Study ◽  
Anaerobic Digestion ◽  
Ph Value ◽  
Biogas Production ◽  
Gas Production ◽  
The Other ◽  
Raw Material ◽  
Production Potential ◽  
Biogas Yield ◽  
The Third

This paper studies on the biogas production yield of which use the lily straw as raw material and the fermentation is batch by batch at 30°C. In the third day of fermentation, fermented liquid became acidic. But it can be back to normal with the action of the anaerobic microbe. Its biogas yield is higher than the other group to adjust pH value. So gas production potential of the lily straw is 475ml/gTS and 573ml/gVS with 31 days of anaerobic digestion. The volumetric biogas production rate reaches 0.19ml/ml/d.

Effect of Biogas Slurry on Biogas Production for Anaerobic Digestion of Corn Straws

2013 ◽  
Vol 805-806 ◽  
pp. 191-195 ◽  
Author(s):  
Xiao Feng Bai ◽  
Zi Fu Li ◽  
Xue Mei Wang ◽  
Fu Bin Yin ◽  
Xiao Xi Wang
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Biogas Slurry ◽  
Production Potential

The study determined the biogas production potential of different concentrations of biogas slurry co-digested with cornstalk at the TS of 8%. It turned out that pure biogas slurry mixed with cornstalk had the best performance. Besides, using biogas slurry without adding any water could keep the pH of the system at 6.9-7.2, while acidification happened when using other concentrations of biogas slurry and the pH went below 6.4.

scholarly journals BIOGAS PRODUCTION POTENTIAL IN ANAEROBIC DIGESTION OF SWINE MANURE WITH DIFFERENT SOLID FRACTION CONCENTRATIONS AND TEMPERATURES

2017 ◽  
Vol 19 (1) ◽  
pp. 6
Author(s):  
Adriano Adelson Costa ◽  
Maira Oliveira Silva ◽  
Marcos Eduardo Paron ◽  
Josirley De Fátima Corrêa Carvalho ◽  
Jorge De Lucas Júnior ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Solid Fraction ◽  
Room Temperature ◽  
Biogas Production ◽  
Swine Manure ◽  
Production Potential ◽  
Physical Chemical ◽  
Microbiological Parameters ◽  
Different Temperatures ◽  
Thermotolerant Coliforms

This work aimed to evaluate the biogas production potential of swine manure (SM) under different temperatures through the use of experimental biodigesters (EB), investigating the physical, chemical and microbiological parameters of the process. The experiment consisted of three treatments a) with solid fraction separation (WSSF), b) without solid fraction separation (W-SSF) and c) solid fraction only (OSF).  The assays were performed in triplicate and submitted  to room temperature (RT) (13.36 to 23.71° C) and to controlled temperature (30.00ºC), during 28 days. The average biogas production in the EB was 390.41 ml (WSSF), 390.53 ml (W-SSF) and 400.53 ml (OSF), at RT and 393.00 ml (WSSF), 393.00 ml (W-SSF) and 390.67 ml (OSF) at 30.00ºC. The results showed that significant differences occurred in the biogas production due to the different treatments and temperatures. The highest average reduction of parameters as a function of treatment and temperature was 53.22% for total solids in WSSF (30°C), 10.73% for nitrogen in W-SSF (RT), 27.50% for phosphorus in the WSSF (TA), 63.55% for the COD in the W-SSF (TA), 99,10% for the total coliforms in the W-SSF (TA) and 99.59% for the thermotolerant coliforms in the WSSF (30°C).

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