Characteristics of bituminous coal, sub-bituminous coal and bottom ash from a coal-fired power plant

Abstract

In this study, the characterization of bituminous coal, sub-bituminous coal and bottom ash from a coal fired power plant was performed. Moisture content, loss of ignition and heat of combustion for the coals and bottom ash were determined. The results show that sub-bituminous coal has high percentage of moisture content and loss of ignition with 18% and 80.49% respectively. Loss of ignition indicates the level of carbon content in the sample. The heat of combustion for bituminous coal exhibits the highest average value with 26898 J/g. The FTIR patterns show chemical bonding in the coals and bottom ash. Bottom ash has a broad peak at 1378 cm -1 indicating the presence of N=O functional group. The X-ray Diffraction study confirms the presence of mineral constituents such as quartz, pyrite and hematite in bituminous coal, sub-bituminous coal and bottom ash.

Synthesis of multi-layer graphene oxide from HCl-treated coke and Brazilian coals by sulfuric acid thermal exfoliation and ozone oxidation

“…5 c), the peak at 26.5° can be identified, which is characteristic of bituminous coal and confirms the presence of quartz. On the other hand, CS presents hematite derived from the reaction between sulfur from pyrite and calcite from coal [ 52 ].

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Overview on the Potential of Coal-Based Bottom Ash as Low-Cost Adsorbents

“…The chemical compositions of bottom ash vary from each other, depending on the nature of coals as well as combustion condition. Mohamad et al reported that coal material does not have a fixed chemical formula due to its homogeneity, and classification is based on amounts of carbon, oxygen, hydrogen, along with trace elements such as sulfur, ash, nitrogen, chlorine, sodium and other metallic compounds that are predominantly found in bottom ash. Coals are divided into four categories: anthracite, bituminous, sub-bituminous, and lignite coals .…”

Planning of the Multi-Energy Circular System Coupled with Waste Processing Base: A Case from China

“…The integration and collaboration of different energies in an integrated energy system can effectively improve the utilization of energy [9][10][11][12][13][14][15]. A generalized multi-energy system refers to a large-scale system composed of the development, conversion, transportation, scheduling, and other manipulations of a variety of energies, including coal [16], natural gas [17], water [18], wind [19], solar energy [20], and other forms of energy [21]. It is called a multi-energy system [22] for different kinds of energy have a complex coupling relationship in each cyclic process and then form an interrelated organic whole.…”