5 research outputs found

    Peat Resources, its Quality and Condition of Deposition, Bijoynagar Upazila, B’Baria District, Bangladesh

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    The report is prepared on the basis of peat exploration at 4000 hectre areas of Bijoynagar Upazila at B’Baria district which is in the north-eastern part of Bangladesh. It has been studied extensively for the exploration of peat resources, particularly areal extent, reserve, quality and their condition of deposition. Nine peat bearing areas were identified in the studied area are covering six unions of Paharpur, Haraspur, and Chompoknagar and Uttar Singair beel. Peat was randomly found in surface to near surface at different places of investigated area. The total reserve of peat is about 32.61 million tons in wet condition or 13.044 million tons in dry condition. The chemical analysis of the peat shows average fixed carbon-20.5%, Ash content-32% and calorific value-7000 B.T.U. The quality of this peat is good. Geology, tectonics and environment of any area are controlling parameter for peat deposition. Fluvial and deltaic plain with area of active subsidence are suitable for peat deposition. The peat of the area may deposit from plant material that accumulated insitu (Autochthonous) and transported from short distance (Hypoautochthonous). The peat layers of the study area are found at surface or at shallow depth ranging from few centimeters to 7 meters below surface. Present of clay and silt of the upper part of the deposits indicating that the sediments are deposits usually in the winter season when the current of the water become weak. Moreover, the sediment may also be laid down in stagnant water after the recession of the flood

    Land Degradation Due to Jamuna Riverbank Erosion: A Case Study at Shahjadpur, Sirajganj District, Bangladesh

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    Climate Change in Bangladesh is an extremely crucial issue. Bangladesh is one of the worstly affected countries by the impacts of Climate Change in coming decades. The climate change in Bangladesh causes the degradation of land resources. High intensity and recurrence of floods are due to irregular rainfall and glacier melting of the Himalayas intensified river bank erosion throughout the year. High yielding land resources on the river bank are degraded each year. This study was conducted for riverbank shifting detection, morphodynamics assessment, and estimation of eroded and accreted land by the Jamuna river at Shahjadpurupazila, Sirajganj district, Bangladesh. The investigation is based on multispectral satellite imagery interpretations using ArcGIS software, followed by a field check. Interpretations show that the Jamuna river in the study area has continuously shifted its path from east to west from 1956 to 2020, resulting in a total loss of 51.68 km2 of landmass. The rate of engulfment was 0.95km2/year whereas the accretion rate was 0.15km2/year. The maximum rate of river shifting on the right bank of Jamuna river in the ShahjadpurUpazila is 84.38 meters/year and the minimum shifting is 31.25 meters/year. This study will help to understand the scenario of land degradation by river erosion in the study area. It may be also helpful to the decision-makers to take the proper mitigation measures regarding riverbank erosion and protectio

    Peat Deposits at Bijoynagar Upazila, Brahmanbaria District, Bangladesh : A Potential Local Source of Energy

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    Bangladesh with about 160 million people in land of 147,570 square km which is one of the most densely populated countries in the world. With the increase of population and diversifying of economic activities, Bangladesh has become an energy hunger country. Presently, 80% peoples depend on non commercial energy sources living in the rural area. Peat exploration at Bijoynagar Upazila, Brahmanbaria district. Bangladesh has been carried out for reserve estimation and its economic aspect evaluation. Total peat exploration area is about 4000 hectare. In explored area, nine peat bearing locations are identified in which peat deposits are observed from 0.152 to 3.0 meters below the surface. Total reserves are about 32.61 million tons in wet condition and 13.044 million tons in dry conditions. The peat is grayish brown to grayish black, fibrous, less to medium compacted and water content is about 60-80 % in wet condition. Chemical analyses of the peat shows that fixed carbon content is 15-25 %, Sulfur is 0.1 to 0.8 % and calorific value of the peat is 3000-7000 BTU. The peat of the area is medium to good quality. The peat may be extracted by open peat mining because of its surface to near surface position. This peat can be conveniently used for small industrial and domestic purpose as briquette and compressed tablet form to meet the growing energy demand of the area. But most of the people of Bijoynagar area live on agriculture. So, peat extraction and related geo-environmental degradation may change living style of the people. Proper land use planning, environmental management and policy should be taken before peat extraction

    Optimization of fuel properties in two different peat reserve areas using surface response methodology and square regression analysis

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    This study aims to optimize the calorific value with different fuel properties derived from two peat reserved areas. A total of 60 peat samples were evaluated using proximate analysis (moisture content, volatile matter, fixed carbon, and ash content) of two separate studied areas. A quadratic polynomial of response surface methodology was applied to the entire set of subsequently studied results. Several analytical equations were used in linear and nonlinear terms to estimate the higher calorific value. Peat samples at Terokhada Upazila show a higher calorific value of 7.050 kcal kg−1, whereas the calorific value of peat sample at Bil Baghia in Madaripur found 5.800 kcal kg−1. The optimal calorific value of peat in both studied areas is 7.05–11.05 kcal kg−1 in Terokhada Upazila and 3.156–7.187 kcal kg−1 in Bil Baghia, Madaripur, respectively. Terokhada Upazila and Bil Baghia, Madaripur, exhibit analytical values of squares regression of (0.0068–0.1245) and (0.003–0.091), respectively. In addition, the standard deviations are found to be between 1.049 and 4.505 kcal kg−1 for Terokhada Upazila peat and between 0.1741 and 2.741 kcal kg1 for Bil Baghia, Madaripur peat, respectively. The RSM quadratic polynomial represents the optimization, and the coded equations are built for two research areas to precisely estimate the highest calorific value. These peats could be helpful to fuel sources if gasified or co-burned with other fuel resources to generate energy. Peat with a higher calorific value can be used as an energy source in the Bangladesh energy sector and globally
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