TY - JOUR
T1 - Characteristics and potential use of residual waste from bauxite ore processing industry in West Kalimantan, Indonesia
AU - Sutrisno, Hendri
AU - Trihadiningrum, Yulinah
AU - Ekaputri, Januarti Jaya
AU - Meilasari, Fitriana
AU - Yuniarto, Adhi
N1 - Publisher Copyright:
© (2025), (Polskie Towarzystwo Inzynierii Ekologicznej (PTIE)). All rights reserved.
PY - 2025
Y1 - 2025
N2 - Bauxite ore processing industry in West Kalimantan generates a voluminous waste that posses potential environmental risks due to its high pH and mineral contents. However, the substantial presence of calcium, silica, aluminum, and iron in the bauxite ore processing waste (BOPW) also presents opportunities for beneficial utilization. This study investigates the potential use of BOPW as liner material in municipal solid waste landfills, in order to minimize groundwater contamination risk. Physical, chemical, mineralogical, and environmental characteristics, which comprise water content, specific gravity, particle size, toxicity characteristic leaching procedure (TCLP), atterberg limit, compaction, consolidation were measured using relevant ASTM and USEPA methods. The results showed that the BOPW exhibited favorable properties as landfill liner. The low moisture content (20.35%), cohesiveness, and specific gravity of 2.94, low hydraulic conductivity (7.56 × 10-7 cm/s) suggested suitability of the BOPW for landfill liner. Chemical analysis revealed predominant components of Fe2O3, Al2O3, SiO2, and Na2O, while mineralogical examination identified the presence of quartz, magnetite, hematite, and lime. The high pH value (11.93) supported chemical stability and immobilization of heavy metal contaminants. Despite favorable results of TCLP test, leachate quality analysis revealed elevated sodium concentrations (266 mg/L), which raised concerns about potential impact on surface water quality, particularly with the absence of specific regulatory standards. This study highlights BOPW’s potential as a suitable landfill liner material, although further assessment for its long-term performance and application suitability is needed.
AB - Bauxite ore processing industry in West Kalimantan generates a voluminous waste that posses potential environmental risks due to its high pH and mineral contents. However, the substantial presence of calcium, silica, aluminum, and iron in the bauxite ore processing waste (BOPW) also presents opportunities for beneficial utilization. This study investigates the potential use of BOPW as liner material in municipal solid waste landfills, in order to minimize groundwater contamination risk. Physical, chemical, mineralogical, and environmental characteristics, which comprise water content, specific gravity, particle size, toxicity characteristic leaching procedure (TCLP), atterberg limit, compaction, consolidation were measured using relevant ASTM and USEPA methods. The results showed that the BOPW exhibited favorable properties as landfill liner. The low moisture content (20.35%), cohesiveness, and specific gravity of 2.94, low hydraulic conductivity (7.56 × 10-7 cm/s) suggested suitability of the BOPW for landfill liner. Chemical analysis revealed predominant components of Fe2O3, Al2O3, SiO2, and Na2O, while mineralogical examination identified the presence of quartz, magnetite, hematite, and lime. The high pH value (11.93) supported chemical stability and immobilization of heavy metal contaminants. Despite favorable results of TCLP test, leachate quality analysis revealed elevated sodium concentrations (266 mg/L), which raised concerns about potential impact on surface water quality, particularly with the absence of specific regulatory standards. This study highlights BOPW’s potential as a suitable landfill liner material, although further assessment for its long-term performance and application suitability is needed.
KW - bauxite processing waste
KW - characteristics
KW - landfill liner
UR - http://www.scopus.com/inward/record.url?scp=85210767093&partnerID=8YFLogxK
U2 - 10.12911/22998993/196062
DO - 10.12911/22998993/196062
M3 - Article
AN - SCOPUS:85210767093
SN - 2081-139X
VL - 26
SP - 355
EP - 372
JO - Journal of Ecological Engineering
JF - Journal of Ecological Engineering
IS - 1
ER -