Experimental Study on Biogas Production by Mesophilic Fermentation for Rabbit Dung

2013 ◽  
Vol 763 ◽  
pp. 160-164 ◽  
Author(s):  
Ying Juan Li ◽  
Li Chun Liu ◽  
Bin Yang ◽  
Wu Di Zhang ◽  
Fang Yin ◽  
...  
Keyword(s):  
Experimental Study ◽  
Anaerobic Digestion ◽  
Batch Fermentation ◽  
Biogas Production ◽  
Control Group ◽  
Feed Concentration ◽  
Biogas Yield ◽  
Initial Ph ◽  
Fermentation Period ◽  
Experimental Group

In order to obtain the biogas fermentation potential of rabbit dung, the anaerobic batch fermentation experiments were performed at 30°C, the feed concentration of 6.09% and an initial pH of 7.0. The experiment was design of the control group (120mL seeding materials) and the experimental group (120mL inoculum+21.51g rabbit dung) to explore the potential of the anaerobic digestion of rabbit dung. The results show that biogas production of rabbit dung during total fermentation period of 36 days is 3084mL, TS biogas yield is 432mL/g, and gas yield is 508mL/g. The results indicated that rabbit dung can be used for biogas fermentation and the fermentation was good.

Experimental Study on Biogas Production by Mesophilic Fermentation with Dimocarpus Longan Pericarp

2014 ◽  
Vol 937 ◽  
pp. 502-507
Author(s):  
Li Juan Zhang ◽  
Wei Dong Lin ◽  
Wu Di Zhang ◽  
Fang Yin ◽  
Xing Ling Zhao ◽  
...  
Keyword(s):  
Experimental Study ◽  
Batch Fermentation ◽  
Biogas Production ◽  
Control Group ◽  
Production Potential ◽  
Fermentation Time ◽  
Biogas Yield ◽  
Dimocarpus Longan ◽  
Experimental Group

In order to gain the biogas production potential from pericarp of longan (Dimocarpus longan Lour.) fruits, the anaerobic batch fermentation which were divided into the control group (120mL inoculum), the experimental group (120mL inoculum and 15g Dimocarpus longan pericarp) were performed at 30°C.The results indicated that the net biogas production of the experimental group during total fermentation time of 45d was 2455mL. Further, it was calculated that the biogas yield of Dimocarpus longan pericarp was 269mL/g TS or 294mL/g VS.

Experimental Study on Potential of Biogas Fermentation with Oxalis corymbosa

2014 ◽  
Vol 953-954 ◽  
pp. 295-299
Author(s):  
Li Juan Zhang ◽  
Wu Di Zhang ◽  
Fang Yin ◽  
Xing Ling Zhao ◽  
Jing Liu ◽  
...  
Keyword(s):  
Experimental Study ◽  
Batch Fermentation ◽  
Biogas Production ◽  
Control Group ◽  
Production Potential ◽  
Fermentation Time ◽  
Biogas Yield ◽  
Experimental Group

In order to gain the biogas production potential from Oxalis corymbosa, the anaerobic batch fermentation which were divided into the control group (120ml inoculum), the experimental group (120ml inoculum and 125g Oxalis corymbosa) were performed at 30°C. The results indicated that the net biogas production of the experimental group during total fermentation time of 50 days was 3220 ml. Further, it was calculated that the biogas yield of Oxalis corymbosa was 338ml/g TS or 388ml/g VS. The result indicated that Oxalis corymbosa can be used for biogas fermentation and the fermentation production potential was good.

Experimental Study on Potential of Biogas Fermentation with Punica granatum Peel

2013 ◽  
Vol 763 ◽  
pp. 151-155 ◽  
Author(s):  
Li Juan Zhang ◽  
Wu Di Zhang ◽  
Fang Yin ◽  
Xing Ling Zhao ◽  
Jing Liu ◽  
...  
Keyword(s):  
Experimental Study ◽  
Batch Fermentation ◽  
Biogas Production ◽  
Punica Granatum ◽  
Fermentation Time ◽  
Biogas Yield ◽  
Experimental Group

Biogas fermentation with Punica granatum peel was studied at 30°C by batch fermentation in this experiment. The results indicated that the net biogas production of the experimental group during total fermentation time of 35d was 1900mL. Further, we calculated that the biogas yield of Punica granatum peel was 264mL/g TS or 271mL/g VS.

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.  

Experiment Study on the Biogas Fermentation of the Hylocereus undatus Stem

2013 ◽  
Vol 848 ◽  
pp. 83-87
Author(s):  
Ying Juan Li ◽  
Jing Liu ◽  
Hong Yang ◽  
Fang Yin ◽  
Wu Di Zhang
Keyword(s):  
Production Rate ◽  
Batch Fermentation ◽  
Biogas Production ◽  
Raw Material ◽  
Experiment Study ◽  
Feed Concentration ◽  
Blue Green Algae ◽  
Fermentation Period ◽  
Hylocereus Undatus ◽  
Biogas Production Rate

In order to get the biogas fermentation potential of the Hylocereus undatus stem, this experiment was conducted the CSRT anaerobic batch fermentation with the fresh hylocereus undatus stem as the raw material and blue green algae slurry as inoculum, on the condition of feed concentration of 6.25%, temperature of 30°C and pH of 8.0. The fermentation period lasted 70 days. The results showed it produced total 4800mL biogas while went over the 90% of the biogas production in the former 48 days. The TS biogas production rate was 695mL/g, the VS biogas production rate was 80mL/g, and the raw material biogas production rate was 70mL/g. It implicated that Hylocereus undatus stem is a kind of good biogas fermentation raw material.

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.

Experiment Study on the Biogas Fermentation of the Cynodon dactlon (L.) Pers.

2014 ◽  
Vol 953-954 ◽  
pp. 290-294
Author(s):  
Ying Juan Li ◽  
Bin Yang ◽  
Jing Liu ◽  
Hong Yang ◽  
Fang Yin ◽  
...  
Keyword(s):  
Production Rate ◽  
Batch Fermentation ◽  
Cynodon Dactylon ◽  
Biogas Production ◽  
Raw Material ◽  
Experiment Study ◽  
Feed Concentration ◽  
Fermentation Period ◽  
Biogas Production Rate

In order to get the biogas fermentation potential of the Cynodon dactylon (L.)Pers, this experiment was conducted the CSRT anaerobic batch fermentation with the Cynodon dacytlon (L.)Pers. as the raw material and the mixed cultivate as inoculum, on the condition of feed concentration of 6.20%, temperature of 30°C and pH of 7.5. The fermentation period lasted 42 days. The results showed it produced total 4400mL biogas while went over the 80% of the biogas production in the early 25 days. The TS biogas production rate was 311mL/g, the VS biogas production rate was 372mL/g, and the raw material biogas production rate was 288mL/g, which implicated that Cynodon dactylon (L.)Pers. is a potential biogas fermentation raw material.

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 Effectiveness of “Hand Hygiene Fun Month” for Kindergarten Children: A Pilot Quasi-Experimental Study

2020 ◽  
Vol 17 (19) ◽  
pp. 7264
Author(s):  
Lorna Kwai Ping Suen ◽  
Janet Pui Lee Cheung
Keyword(s):  
Experimental Study ◽  
Hand Hygiene ◽  
School Health ◽  
Intervention Group ◽  
Kindergarten Children ◽  
School Level ◽  
Control Group ◽  
Hygiene Practices ◽  
Quasi Experimental ◽  
Experimental Group

Early childhood is a formative period during which healthy habits are developed, including proper hand hygiene practices. The aim of this quasi-experimental study was to determine the effectiveness of a 4-week series of educational sessions that consider the cognitive developmental stage of children on increasing their knowledge and promoting hand hygiene practices. The intervention group (n = 33) observed the hand hygiene program, whereas another group served as the waitlist control (n = 20). Creative activities were planned for the illustration of hand hygiene concepts in terms of “right moments”, “right steps”, and “right duration”. Hand sanitizer coverage was evaluated using a hand scanner. After the intervention, the experimental group had higher knowledge level toward hand hygiene than the control group (p < 0.001). Significant improvements in hand hygiene performance at the left palm and dorsum (p < 0.05), right palm (p < 0.05), and overall hand coverage (p < 0.05) were observed in the experimental group. The study demonstrated that the knowledge and proper hand hygiene (HH) practice of children can be positively influenced by the use of an age-appropriate education program. The results of this study have implications for school health educators and parents for promoting HH practices among children at home and at the school level.

Electronic texts or learning through textbooks: An experimental study

ReCALL ◽  
2004 ◽  
Vol 16 (2) ◽  
pp. 539-557 ◽  
Author(s):  
NINETTE CARTES-ENRIQUEZ ◽  
M. I. SOLAR RODRIGUEZ ◽  
R. QUINTANA LETELIER
Keyword(s):  
Experimental Study ◽  
Foreign Language ◽  
Cognitive Strategies ◽  
Control Group ◽  
Computer Lab ◽  
Electronic Texts ◽  
Post Test ◽  
Search For Information ◽  
Experimental Group ◽  
Traditional Class

This is an experimental study in the area of Didactics applied to the learning of English as a foreign language and complemented by CALL. The main objective of this work is to know the degree of incidence existing between two groups of students: one, based on conference-style classes where students, guided by the teacher, have to search for information about a topic in the computer lab and present it in front of the class and, in the other, where students are taught by the teacher according to a printed text. The experimental design consisted of a pre-test/post-test plus the application of different techniques to develop the different linguistic and cognitive strategies, between these tests. The methodology used by the Experimental Group forced learners to generate their own knowledge, so they had to apply the information and work by themselves in Workshops; and the Control Group participated in the classroom according to the communicative approach, guided by the teacher in the traditional class. Statistics were applied to the scores obtained between both tests, and the scores obtained weekly in the different competences contributed to knowing whether there were significant differences between both groups.

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