China
Africa
Explore chapters and articles related to this topic
Solar power
Published in Anthony N. Penna, A History of Energy Flows, 2019
The challenge has not deterred China from building the world’s largest solar PV plant. Begun in 2014 and completed in 2017, the Ningxia solar project in China’s arid northwest autonomous region covers the equivalent of 7,000 U.S. East Coast city blocks. It cost almost US$2.5 billion to manufacture and install 6 million panels. It will generate 2.37 billion kilowatt-hours of electricity annually, equivalent to the power produced by a 400-megawatt-hour coal-fired plant.8 Other impressive projects point out China’s commitment to solar power. A new solar installation in the city of Huainan, in the coal-mining region of Anhui province began operation in May 2017. It generates 40 megawatt-hours of electricity, enough to power 15,000 homes. Interestingly, the installation physically replaces an area that was strip-mined for coal, providing a window into the many ways in which energy flows occur. Land subsidence created a cavity and intense rainfall filled it to create a lake that is between 4 and 10 meters deep (13–33 ft). The solar installation floats on the surface of this lake. The lake’s water helps cool the surface of the solar panels, reducing the risk of overheating. Other large-scale projects include using the surface of a fish farm to install 300 solar panels in Zhejiang Province.
Coal-Based Environmental Problems in a Low-Rainfall Tropical Region
Published in Robert F. Keefer, Kenneth S. Sajwan, Trace Elements in Coal and Coal Combustion Residues, 2020
M. Agrawal, J. Singh, A. K. Jha, J. S. Singh
Crop plants tried on the present mine spoils also performed well. The growth performance of Cajanus cajan was better in mine spoil than in adjacent agricultural farm plots.74 Cultivation of Cajanus cajan increased total P availability, and it can grow and yield well in soils of low available P level without P fertilizer applications because of its ability to tap Fe-P, which cannot be easily utilized by other crops.89 Plant species, however, may not be equally suited for all environmental conditions in a coal mining region. Only the species or species cultivars best suited for specific postmine land uses and adapted to the post-mine environment should be selected.74
The underground coal gasification is the technology which answers to conditions of sustainable development of coal region
Published in Vladimír Strakoš, Vladimír Kebo, Radim Farana, Lubomír Smutný, Mine Planning and Equipment Selection 1997, 2020
Sergey N. Lazarenko, Valery N. Kochetkov
It was established that all coal regions of Russia have enormous reserves of coal which potentially fit for extraction by method of underground gasification. Kuznetsk Basin is of main interest for underground coal gasification in Russia as an unique coal mining region that shows promise for underground gasification. In this region South-Abinskaya station of underground coal gasification was worked uninterruptedly for almost 40 years and gasified 3 billion tons of coal and received through this more than 9 billion m3 of gas, used as fuel in the local boilers. It was calculated that only Kuznetsk Basin’s reserves of coal suited for underground gasification are about 15 billion tons.
Feasibility study on fully mechanized large mining height long wall top-coal caving mining in ultra-thick (20–30 m), parting-rich coal seams: A case study of the Laosangou mining field in China
Published in Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2020
Yazhou Zhou, Dongsheng Zhang, Gangwei Fan, Shuai Zhang, Shizhong Zhang
With abundant coal resources, China’s western coal-mining region is home to multiple large coalfields with reserves exceeding 10 billion tons (Meng et al. 2019). Ultra-thick coal seams with single-seam thicknesses exceeding 20 m are widely distributed throughout this region (Li et al. 2019). For example, the thickness of the BM coal seam in Dajing No. 2 coal mine ranges from 39.87 to 45.82 m (Xu et al. 2014), and the average thickness of the B coal seam in Xishanyao coal mine is about 70 m (Wang et al. 2019b). Similar coal seams are also found in other countries, such as the Sans-Nom coal seam in the Cevennes Basin in France (Hu et al. 2011). These coal seams are expected to gradually become key mining targets, recently.
Microbial community structures and sulfur speciation characteristics in soil sample around the Xiang-tan Liejiaqiao coal gangue dump, Hunan Province in South of China
Published in Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2021
Juan Mei, Huan He, Fen Fen Hong, Yun-Wei Leng, Yi-Dong Zhao, Lei Zheng, Chen-Yan Ma, Xiu-Xiang Tao
The coal mining has been producing a huge volume of solid wastes (termed coal gangue) which have traditionally been dumped in cone-shaped heaps. The harmful heavy metals and sulfides in coal gangue can cause serious pollution on air, soil, and water through dust generation, coal-mining waste leachate products, self-ignition, and so on (Ciesielczuk et al. 2014; Fundikwa 2016). In the past decades, concerns on the soil pollution caused by coal gangue dump have attracted many attentions (Bian et al. 2009; He et al. 2016). It has been reported that the deterioration of soil quality in the coal-mining region affects not only plant quality and yields but also microbial communities (Harantová et al. 2017).
Carbon biofixation and lipid composition of an acidophilic microalga cultivated on treated wastewater supplied with different CO2 levels
Published in Environmental Technology, 2019
Fábio de Farias Neves, Leonardo Hoinaski, Leonardo Rubi Rörig, Roberto Bianchini Derner, Henrique de Melo Lisboa
The strain of microalga used in this research was isolated from acid mine drainage (AMD) of the coal mining region of Santa Catarina State in southern Brazil (Lat. 28°35′S, Long. 49°27′W) and held in the Laboratory of Phycology (LAFIC) at the Federal University of Santa Catarina (UFSC) as Chlamydomonas acidophila LAFIC-004. The pH in this environment varies from 1.85 to 3.55, turbidity varies from 28 to 70 NTU, salinity varies from 0.31 to 0.80 ppt, and Dissolved Oxygen varies from 0.0 to 6.5 mg L−1.