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Reports of MRV Demonstration Studies: FY2012

Title of Study MRV Demonstration Study using a model project
Methane Recovery and Utilisation from Livestock Manure by using Bio-digesters
FYFY 2012
Main Implementing EntityJapan NUS Co., Ltd.
Study PartnersKowa Shoji, Mekong Carbon, TÜV Rheinland Cambodia
Location of Project/ActivityCambodia (Kampong Speu province)
Category of Project/ActivityWaste Management
Study Report

Note: Preliminary drafts of MRV Methodology and Calculation Sheet are the result of the study. They have neither been officially approved, nor are guaranteed to be officially approved under the JCM/BOCM.
Description of Project/ActivityThis activity is to utilise methane from livestock manure by anaerobic digestion of bio-digester for electricity, cooking stove, and gas lamp at three typical livestock farms in Cambodia.
Eligibility CriteriaCase 1
Farms where livestock populations, comprising of cattle, buffalo, and/or swine, are bred continuously under the condition that the number of livestock can be counted such as livestock barn

Case 2
Farms where manure from livestock is dealt with by open lagoon type animal waste treatment system

Case 3
Structure of bio-digester has high sealability and prevents any unintentioal leakage

Case 4
Bio-gas, mainly methane, from bio-digester should be used as fuel for cooking, lighting, and/or power generation

Case 5
Farms where the project is implemented shall not be registered as a CDM project or any other voluntary emission allowance creating project

Case 6 (Case applies to electricity generation only)
Bio-gas flow meter is installed, e.g., differential pressure, ultrasonic, vortex shedding, turbine type, etc.
Reference Scenario and Project/Activity BoundaryReference scenario is livestock farm which will be the project site uses an open lagoon type animal waste management system and would have continued to use the same system in the future.
Project boundary includes animal waste management system, facilities where bio-gas is burned and used for cooking, lighting and/or electricity generated, and grid or non-grid electricity in case of a power generation project.
Calculation Method OptionsThere are three calculation method options. Calculation method 1 is applied to a project that bio-gas is used for electricity (mostly large scale). Calculation method 2 is applied to a project that bio-gas is used for cooking and/or lighting device and the number of project is less than 50. Calculation method 3 is applied to a project that bio-gas is used for cooking and/or lighting device and the number of project is more than 49.
Default Values set in Methodology
  • Annual methane conversion factor: 80%
     Values in IPCC Guidelines for National GHG Inventory were applied.
  • Maximum methane producing potential of the volatile solid generated by livestock: swine: 0.29, cattle: 0.1, buffalo: 0.1 (m3CH4/kg dm)
     Values in IPCC Guidelines for National GHG Inventory were applied.
  • Fraction of livestock manure handled in system j in the reference scenario: swine: 100%, cattle: 63%, buffalo: 50%
     Value was set by field survey and document research.
  • Annual volatile solid excretion on a dry-matter basis for a defined livestock population: swine: 195.5, cattle: 315.8, buffalo: 599.4 (kg-dm/head/y)
     Value was set by referring to ACM0010 in CDM methodology.
  • Methane density of bio-gas: 50%
     Value was set by monitoring at project sites and desk research.
Monitoring MethodReference emissions:
  • (Calculation method 1 and 2) Annual average number of livestock (every day)

Project emissions:
  • (Calculation method 1) Amount of bio-gas sent to gas engine (everyday)
  • (Calculation method 2) Hours of using cooking stove, rice cooker and lighting device (every day)
*There is no monitoring required for calculation method 3.
Result of Monitoring ActivityPeriod of monitoring:
16 July 2012 - 16 December 2012 (154 days)

Site 1:
Total number of swine: 679,600,
Electricity consumed in the absent of the project: 62.9MWh

Site 2:
Total number of cattle: 838,
Total number of swine: 839,
Hours of using cooking stove: 445.5 hours,
Hours of using lighting device: 418.0 hours

Site 3:
Total number of swine: 1,153,
Hours of using cooking stove: 435.5 hours
GHG Emissions and its ReductionsSite 1:
Reference emissions: 1,465tCO2,
Project emissions: 405tCO2,
Emission reductions: 1,060tCO2

Site 2:
Reference emissions: 2.4tCO2,
Project emissions: 0 tCO2,
Emission reductions: 2.4tCO2

Site 3:
Reference emissions: 2.4 tCO2,
Project emissions: 0.3 tCO2,
Emission reductions: 2.1 tCO2
Method and Result of VerificationThird party verification was conducted by TÜV Rheinland Cambodia. Validity of MRV methodology, onsite assessment, and development of verification report were conducted. Verification consisted of three verification team, two technical experts, and two internal reviewers. Several remarks were raised and corrections of MRV methodology were made as needed.
Environmental ImpactsIt is expected by introducing bio-digester that prevention of solid pollution, reduction of forest resource aimed to collect firewood, and reduction of chemical fertilizer. On the other hand, it is concerned that corrosion of metal parts of application and influence on health of bio-gas user by hydrogen sulfide.
Promotion of Japanese TechnologyAdvantages of Japanese technology are environmental sanitation, safety, and efficiency. However, there is a large gap between common bio-digester in Cambodia and Japanese one. To compensate the gap, it would be effective to promote with soft technology such as operational assistant of taking advantage of slurry for organic fertilizer.
Sustainable Development in Host CountryReduction of kerosene as fuel for light, saving of time and money, increase of agricultural output by using slurry as fertilizer are expected by installing bio-digester. It can also contribute to sustainable development such as reduction of poverty, prevention of disease, burden of environment.

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