Search results
Results from the WOW.Com Content Network
Karnafuli Fertiliser Company or KAFCO is a joint venture multinational company located in Chittagong, Bangladesh that produces urea fertiliser from Natural Gas.It is located in Anwara upazila of Chittagong district by the side of the Karnafuli river occupying an area of 100.03 acres. [1]
The shrimp farming industry in Bangladesh has been handicapped by low-quality and low prices. [citation needed] The World Bank and the Asian Development Bank financed projects to develop shrimp aquaculture in the 1980s. [1] Much of the emphasis was on construction of modern hatcheries. [1]
A number of countries have created their own national standards and certifying bodies for organic aquaculture. While there is not simply one international organic aquaculture standardization process, one of the largest certification organizations is the Global Trust, [9] which delivers assessments and certifications to match the highest quality organic aquaculture standards.
By 1989, a semi-intensive (1 kg fish/m −3) seabream and grey mullet pond system by the Gulf of Aqaba on the Red Sea supported dense diatom populations, excellent for feeding oysters. [ 15 ] [ 16 ] Hundreds of kilos of fish and oysters cultured here were sold.
Typical build ratios are .5 to 1 square foot of grow space for every 1 U.S. gal (3.8 L) of aquaculture water in the system. 1 U.S. gal (3.8 L) of water can support between .5 lb (0.23 kg) and 1 lb (0.45 kg) of fish stock depending on aeration and filtration.
Urea is the most used fertilizer in the world, due to its high content of nitrogen, low cost and high reactivity towards water. [32] When exposed to ocean waters, urea is metabolized by phytoplankton via urease enzymes to produce ammonia. [33] + +
Large aquaculture facilities (i.e. those producing 20,000 pounds (9,100 kg) per year) which discharge wastewater are required to obtain permits pursuant to the Clean Water Act. [167] Facilities that produce at least 100,000 pounds (45,000 kg) of fish, molluscs or crustaceans a year are subject to specific national discharge standards. [168]
Marine shrimp farming is an aquaculture business for the cultivation of marine shrimp or prawns [Note 1] for human consumption. Although traditional shrimp farming has been carried out in Asia for centuries, large-scale commercial shrimp farming began in the 1970s, and production grew steeply, particularly to match the market demands of the United States, Japan and Western Europe.