Sustainable beneficiation of high-ash Indian coal: phytochemical-facilitated demineralization and energy enhancement
學年 114
學期 2
出版（發表）日期 2026-06-16
作品名稱 Sustainable beneficiation of high-ash Indian coal: phytochemical-facilitated demineralization and energy enhancement
作品名稱（其他語言）
著者 Murali Prakash Jatla; Sai Satya Borada; Ya Vinh; Kolli Deepti; Mameda Naresh
單位
出版者
著錄名稱、卷期、頁數 International Journal of Coal Preparation and Utilization
摘要 Improving the quality of high-ash Indian coal remains a significant challenge for enhancing energy efficiency and reducing environmental impact. This study introduces a sustainable beneficiation approach utilizing aqueous stem extracts of Myristica malabarica as a green, plant-derived alternative to conventional chemical leaching agents. Phytochemical characterization confirmed the presence of polyphenols, flavonoids, and chalcones, compounds recognized for their potent chelating and surface-active properties. Bio-extract treatment effectively reduced coal ash content from 35.12% to 31.05%, representing a relative reduction of 11.6%. This demineralization led to significant enrichment in fixed carbon and a substantial increase in gross calorific value (GCV) from 4403 to 4958 kcal/kg. Structural analyses via XRD and FTIR indicated the partial degradation of key crystalline mineral phases, including quartz and kaolinite. SEM-EDS observations corroborated these findings, revealing notable surface decontamination and a significant decrease in the elemental concentrations of silicon and aluminum. These improvements are attributed to the synergistic effects of metal chelation and redox-mediated interactions between the phytochemical constituents and the coal mineral matrix.
關鍵字 Coal; Myristica malabarica; green leaching; demineralization; high-ash coal
語言 en
ISSN
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Mameda Naresh
審稿制度 否
國別 GBR
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/129337 )