2. CNG-Fuel for Vehicle In Dhaka, the streets are full of thousands of noisy speakers, pedestrians, beggars, food vendors and stray animals. As so many people migrated from the rural area to Dhaka year by year, the city becomes crowded, and the number of vehicles also increased. Many people use auto-rickshaws that can move around on the narrow road of Dhaka city. Before 2003 these type of auto rickshaw was powered by two-stroke gasoline engines. This type of gasoline engine also can found in many motorcycles and larger tricycles in Dhaka. According to the Asian Development Bank, this alone was responsible for 60% of all vehicle-related pollution because two-stroke engines do not use gasoline efficiently(Zia Wadud, 2014). Up to 40% of the fuel emerges from the tailpipe unburned, as smoke and soot. Carbon dioxide, carbon monoxide, sulfur dioxide, hydrocarbons, nitrogen oxides, and soot are produced by burning gasoline and diesel. In 1997 the soot level was found ten times higher than the World Health Organization (WHO). According to World Bank estimates, this resulted in another 16,000 deaths and millions of diseases. After finding this report, Bangladesh Government started to take action to reduce air pollution by banning gasoline in 1999, and the CNG program was launched. An import ban also placed on a two-stroke three-wheeler. Compressed natural gas is 95 per cent methane and releases significantly fewer tailpipe emissions than does gasoline or diesel fuel. CNG began to succeed in Bangladesh at this time because of the push for a cleaner environment in 2000. The price of CNG also fell drastically. CNG now sells for BDT16 per litre, which is equivalent to about 87 cents per gallon. Gasoline, on the other hand, is currently trading at $4.33 per gallon, while diesel is at $2.38. CNG represents a considerable saving. In 2003 two strokes three-wheeler was finally banned and in all over Bangladesh CNG (name of the auto rickshaw which uses Natural Compressed Gas) become so popular(Chowdhury, 2012). The name CNG has become synonymous with motorized rickshaws. It is painted green and referred to as CNG for short. After using CNG, the level of particular pollution dropped 30% t0 40%. Bangladesh becomes one step ahead of implementing green environment.
3. Floating Agriculture to Fight Climate Change Bangladesh is one of the countries with the most severe sea level rise caused by climate change(Ali, 1999). Bangladesh is also a riverine country. In monsoon season the half of the area southern part of Bangladesh is covered with water. As a result, it is impossible for the people of those who are to grow the crop. One of these types of area is Nazirpur Upazilla of Pirojpur. However, people of this area are practising a method to produce vegetable known as ‘DHAP” or floating garden. This floating agriculture becomes an important invention to fight against climate change(Pavel, Chowdhury, & Mamun, 2014). The floating garden made with the help of a raft. The raft is covered with the soil and cow dung where the farmers grow vegetable instead of the land. Each year, a new raft needs to be built, but in the dry season, the old raft can be used as fertilizer. The raft is known as “Dhap”. Under the model, residents have brought the unused water bodies under cultivation “Dhap” submerged in about eight months of this year on those water bodies. Water hyacinth and other organic materials like cow dung are usually piled up to create a “Dhap” which takes shape over a few days, floating on the water like a boat. The raft can be around 180-foot-long with around a 2-foot thickness and a 4-foot width. Farmers grow vegetables like beans, tomatoes, okra, eggplants, pumpkins, and peppers. Local farmer earning money by selling these vegetables and on the other hand the owner of the marshland is making money by giving the lease to seasonal farmers. Even the cost of implementing a floating garden is meager.
4. Banning Polythene Bag- Developing Environment Bangladesh was the first country to ban the use of plastic bags. More than a decade later, many developed countries are still trying to emulate this success. Although plastic bags only account for a small portion of all trash, the impact of these bags is significant. One of the main effects of Bangladeshi plastic bags is their impact on rainwater drainage systems(S. U. Ahmed & Gotoh, 2005). Annual precipitation in Bangladesh is as high as 5 meters, setting a world record for the highest daily rainfall in a single day(Habibur & Matin, 2015). Plastic bags clog sewers and waterways during the monsoon season. At the flood of 1998, it was estimated that 80% of the urban waterlogging was caused by plastic bags clogging the drainage system after that plastic bag becomes the vital element for Dhaka city water logging problem. Plastic bags are filled with becoming mosquito breeding grounds.
5. Solar Energy Providing full access to affordable energy and adopting clean carbon-free energy source is the seventh goal of sustainable development goal. 14% of electricity consumption can be reduced by adopting cost-effective eider range of technologies. Bangladesh Solar experience may provide a model to help achieve the goal of the National Sustainable Energy Initiative, which means universal access to electricity, doubling the share of renewable energy in the global portfolio, and doubling the efficiency improvement rate(Nandi, Hoque, Ghosh, & Chowdhury, 2013). In 2002, only 7,000 Bangladeshi families were using solar panels. At present, Bangladesh has more than 1.4 million low-income rural households supplying electricity through solar photovoltaic panels, most of which are imported from China. Grameen Shakti is one of the private pioneer organizations in the field of renewable energy in Bangladesh. It was established in 1996, and its main motto is to promote renewable or solar energy in the rural areas of Bangladesh.
5. Solar Energy Providing full access to affordable energy and adopting clean carbon-free energy source is the seventh goal of sustainable development goal. 14% of electricity consumption can be reduced by adopting cost-effective eider range of technologies. Bangladesh Solar experience may provide a model to help achieve the goal of the National Sustainable Energy Initiative, which means universal access to electricity, doubling the share of renewable energy in the global portfolio, and doubling the efficiency improvement rate(Nandi, Hoque, Ghosh, & Chowdhury, 2013). In 2002, only 7,000 Bangladeshi families were using solar panels. At present, Bangladesh has more than 1.4 million low-income rural households supplying electricity through solar photovoltaic panels, most of which are imported from China. Grameen Shakti is one of the private pioneer organizations in the field of renewable energy in Bangladesh. It was established in 1996, and its main motto is to promote renewable or solar energy in the rural areas of Bangladesh.