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Doing clean farming to sell "air"

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Tran Cong
Doing clean farming to sell "air"

In addition to raising pigs, gardening, hundreds of farmers in Can Tho city also invest in making biogas, not burning firewood, saving electricity ... to limit carbon emissions (CO2) for ... carbon number.

The model is being replicated under the Clean Development Mechanism-Based Rural Development (CDM) project, coordinated by Can Tho University and the World Research Center of Japan for Agricultural Science (JIRCAS). show. And this is the first "carbon credit" investment project to be implemented in the Mekong Delta.

From the date of joining the project, in addition to some crops such as mulberry, oranges, durian and pig breeding, 5,000m2 garden by Mr. Le Hoang Thanh (My Thuan hamlet, My Khanh commune, Phong Dien district, Can Tho city) six additional biogas systems are made of plastic bags, with the investment from the project's money. With biogas tanks supplying gas, for many years, Mr. Thanh's family has used it to replace all gas cylinders, firewood for cooking in the family. "Thanks to the existing system, it is only necessary to ditch the airbag, put the pig manure in waiting for decomposition to have gas immediately" - Mr. Thanh said.

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Not only did he save a large amount of gas, but the amount of gas he collected from the biogas system was also distributed to neighboring neighbors for cooking. In addition, Mr. Thanh's garden is also a place for Can Tho University to experiment with building a biogas system using plastic bags with straw or water fern fuel. "Similar to pig manure, I put straw or duckweed in a plastic bag to wait for decomposition, when I see a plastic bag filled with gas, I start to take out gas to cook water, light a lamp ... very convenient" - Mr. Thanh said.

Mr. Thanh's family is one of 401 households in Can Tho who has been funded with biogas bags by JIRCAS under the CDM project. MSc Tran Sy Nam - Lecturer of the Faculty of Environment and Natural Resources, Can Tho University, one of the people in charge of the project - said that just agree to participate in the project, commit to using gas from Biogas system instead of gas tank, firewood within seven years, will be financed a biogas bag worth more than 2 million VND.

Mr. Nam said that in the farmer households participating in this project, there is a group of controllers who regularly explore the emission limitation by ticket once a month. The cards will show how much gas people are reducing each month, or how much firewood is no longer in use since the biogas system. Even the amount of animal manure is used as raw material for the biogas system if there is any change, because that will shape the amount of carbon credits.

Many benefits

According to Assoc.Prof. Dr. Nguyen Huu Chien - Lecturer of the Faculty of Environment and Natural Resources, Can Tho University, representative of JIRCAS project, the CDM project is implemented in Phong Dien district and two districts of Binh Thuy and Cai Rang (Can Tho) since 2009, with the aim of investing in 1,000 farming households, using bag biogas systems to participate in reducing emissions. “According to the CDM project, JIRCAS will invest capital to garden farmers with clean measures, minimizing CO2 emissions into the environment. These deflations will be re-measured and converted to carbon credits. After keeping the carbon credit stable in the growers, JIRCAS will market to the world to sell these credits ”- Mr. Chanh said.

In 2014, JIRCAS committed to continue supporting about 1,000 farmer households in Can Tho province to participate in the program with 1,000 bags of biogas deployed. And about 3,000 carbon credits can be generated each year. It is expected that in 2015, the statistics of carbon credits will begin and they will be sold to the world carbon market. "The proceeds from the sale of carbon credits from the project will also support households in the project such as providing clean water filtration systems, using solar energy, supporting agricultural cultivation ..." - Mr. Occupy said.

According to Mr. Nam's estimate, a biogas bag with a capacity of 2 m3 in each household like Mr. Thanh can reduce emissions by more than 3 tons of CO2 (equivalent to 3 carbon credits) in a year. "In addition to creating burning materials, the biogas system also helps to ensure a clean environment, the waste can be used as a clean fertilizer, contributing to creating carbon credits in each household" - Mr. Nam said.

Associate Professor, Dr. Le Anh Tuan - Deputy Director of the Research Institute for Climate Change at Can Tho University - said that reducing emissions in Vietnam has been implemented by many non-government projects but mainly in hydroelectricity and national parks. The investment of carbon credits in farming households is mainly in the form of how people can limit gas consumption, electricity, and manure discharge during barn cleaning. “The method of using the biogas model to solve this problem should be selected as the focus of the project. People enjoy a lot of benefits from the project and are also more aware of environmental protection ”- Mr. Tuan said.

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