Variations in the Physicochemical Profile of Khushab Coal under Various Environmental Conditions

Abstract

Emissions of hazardous materials like methane, carbon monoxide, sulphur, and coal dust during the mining process posed severe environmental problems [1-4]. Non-implementation of environmental standards is a major cause of these enhanced effluents. The incidence of sulphur in the coal matrix is responsible for acidic contents of underground water. Effective greenhouse gases released into the air are a major source of global warming and acid rain. Negative changes to the environment caused by the coal mining process include severe damage to waterways due to the sulphurous contents of mined material. The concerns of such activities have resulted in the alteration in atmospheric settings that eventually affect climatic conditions globally [5-20]. The composition and structure of coal consists of carbon mixed with hydrogen-containing impurities. The presence of benzene tri-, tetra-, and complex waxy material indicates the preponderance of aromatic structures. The topological indices are often used to model

Corncob-supported calcium oxide nanoparticles from hen eggshells for cadmium (Cd-II) removal from aqueous solutions; Synthesis and characterization

“…Proximate analysis was performed for raw eggshell and CaO particle adsorbent to analyze the physicochemical characteristics such as moisture content and ash content [ 32 ]. In this case, it provides information about the composition of raw egg shells and the resulting CaO particle adsorbent.…”

Evaluation of Antioxidant Potential and Cytotoxic Behavior of Different Varieties of <i>Allium sativum</i>

“…Absorbance was taken at 510 nm. TFC of the extracts were expressed as a catechin equivalents [27][28][29][30]. Phosphate (PO 4 ) buffer was prepared by dissolving 0.18g of NaH 2 PO 4 and 0.55g of Na 2 HPO 4 in 100 mL distilled water.…”