Inorganic additives to increase methane generation during anaerobic digestion of livestock manure: a review

2021 ◽  
Author(s):  
Xuna Liu ◽  
Luqing Qi ◽  
Efthalia Chatzisymeon ◽  
Ping Yang ◽  
Weiyi Sun ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Livestock Manure ◽  
Methane Generation

Alkali pre-treatment of Sorghum Moench for biogas production

2013 ◽  
Vol 67 (9) ◽  
Author(s):  
Karina Michalska ◽  
Stanisław Ledakowicz
Keyword(s):  
Anaerobic Digestion ◽  
Chemical Oxygen Demand ◽  
Volatile Fatty Acids ◽  
Biogas Production ◽  
Oxygen Demand ◽  
Total Phenolic ◽  
Methane Generation ◽  
Pre Treatment ◽  
Alkali Hydrolysis ◽  
Almost All

AbstractThis work studies the influence of the alkali pre-treatment of Sorghum Moench — a representative of energy crops used in biogas production. Solutions containing various concentrations of sodium hydroxide were used to achieve the highest degradation of lignocellulosic structures. The results obtained after chemical pre-treatment indicate that the use of NaOH leads to the removal of almost all lignin (over 99 % in the case of 5 mass % NaOH) from the biomass, which is a prerequisite for efficient anaerobic digestion. Several parameters, such as chemical oxygen demand, total organic carbon, total phenolic content, volatile fatty acids, and general nitrogen were determined in the hydrolysates thus obtained in order to define the most favourable conditions. The best results were obtained for the Sorghum treated with 5 mass % NaOH at 121°C for 30 min The hydrolysate thus achieved consisted of high total phenolic compounds concentration (ca. 4.7 g L−1) and chemical oxygen demand value (ca. 45 g L−1). Although single alkali hydrolysis causes total degradation of glucose, a combined chemical and enzymatic pre-treatment of Sorghum leads to the release of large amounts of this monosaccharide into the supernatant. This indicates that alkali pre-treatment does not lead to complete cellulose destruction. The high degradation of lignin structure in the first step of the pre-treatment rendered the remainder of the biomass available for enzymatic action. A comparison of the efficiency of biogas production from untreated Sorghum and Sorghum treated with the use of NaOH and enzymes shows that chemical hydrolysis improves the anaerobic digestion effectiveness and the combined pre-treatment could have great potential for methane generation.

scholarly journals Estimation of methane generation based on anaerobic digestion and mass balance at Kiteezi Landfill, Kampala, Uganda

2015 ◽  
Vol 9 (9) ◽  
pp. 741-746 ◽  
Author(s):  
Mboowa Drake ◽  
Banadda Noble ◽  
Kiggundu Nicholas ◽  
Kabenge Isa ◽  
John Komakech Allan
Keyword(s):  
Anaerobic Digestion ◽  
Mass Balance ◽  
Methane Generation

scholarly journals Management approach of livestock manure in present farming system of Bangladesh

2019 ◽  
Vol 5 (1) ◽  
pp. 63-70
Author(s):  
Jobaida Shovna Khanam ◽  
Khan Shahidul Huque ◽  
Nazmul Huda ◽  
Mohammad Khairul Bashar
Keyword(s):  
Anaerobic Digestion ◽  
Performance Indicator ◽  
Storage System ◽  
Research Work ◽  
Poultry Manure ◽  
Small Ruminants ◽  
Farming System ◽  
Management Approach ◽  
Livestock Manure ◽  
Liquid Slurry

Laying aside manure meat, milk and egg is considered as key performance indicator of livestock farm profitability of Bangladesh till yet whereas manure contains minimum 45-55% feed nutrient fed to animals. A survey based research work was conveyed to find out the major channel of using this valuable livestock manure by farmers from twelve selected district of Bangladesh. Results showed that most of the cattle and buffalo farmers prefer solid storage system to manage their manure. From this stored manure, about 35% was used for land fertilization, 47% for burning fuel preparation, 8% for composting and remaining 10% become completely wasted. A very few of cattle manure (4.65) was utilized by the care of anaerobic digestion. But this improved system was completely absent in case of buffalo and small ruminants manure management. Dung produced from small ruminants fully goes for solid piling. About 20% of poultry manure managed in improved way and the remaining portion was mostly utilized in a very disparage way. In anaerobic digestion system, the produced gas went for home consumption and bio-slurry creates havoc for both farmer and environment. Land fertilization and aquaculture coves its utilization but the amount is too low compared to its production. Above 52% of total bio-slurry become wasted due to limited knowledge and lack of appropriate handling techniques. The scenario of urine and liquid slurry management was very melancholic. About 0.37 and 0.203 kg methane emission per head per year was calculated from solid storage system of cattle and small ruminant animal manure. The value is also high in burning fuel preparation (5.46 kg) and liquid slurry (5.81 kg) and a bit low in anaerobic digestion system (1.24 kg) per head per year. Asian J. Med. Biol. Res. March 2019, 5(1): 63-70

Degradation of veterinary antibiotics during anaerobic digestion of dairy manure

2015 ◽  
Vol 10 (3) ◽  
pp. 532-537 ◽  
Author(s):  
Yumika Kitazono ◽  
Ikko Ihara ◽  
Kiyohiko Toyoda ◽  
Kazutaka Umetsu
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Dairy Manure ◽  
Antibiotic Residues ◽  
Veterinary Antibiotics ◽  
Livestock Manure ◽  
Anaerobic Digestion Process ◽  
Digestion Process ◽  
Antibiotic Degradation

This study evaluated antibiotic degradation and biogas production during anaerobic digestion of dairy manure contained two common veterinary antibiotics at 37 °C. After 18 days of digestion, the concentration of chlortetracycline (CTC) decreased more than 80% regardless of the initial CTC concentration. The concentration of cefazolin (CEZ) decreased from 10 to 0.08 mg/L in 6 days. Less than 50 mg/L CTC and 10 mg/L CEZ had negligible impact on biogas production during anaerobic digestion process. The result showed that the anaerobic digestion has a potential to degrade antibiotic residues in livestock manure.

A model based on feature objects aided strategy to evaluate the methane generation from food waste by anaerobic digestion

2018 ◽  
Vol 72 ◽  
pp. 218-226 ◽  
Author(s):  
Meijuan Yu ◽  
Mingxing Zhao ◽  
Zhenxing Huang ◽  
Kezhong Xi ◽  
Wansheng Shi ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Food Waste ◽  
Methane Generation ◽  
Model Based

Anaerobic digestion of coconut copra: methane generation potential

2014 ◽  
Vol 9 (3) ◽  
pp. 162-170
Author(s):  
David G. Wareham ◽  
Panagiotis Elefsiniotis ◽  
Jeanette White
Keyword(s):  
Anaerobic Digestion ◽  
Methane Generation
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