Article Per Year (5 Year)
p-Index From 2021 - 2026
0.408
P-Index
This Author published in this journals
All Journal AKSIOMA : Jurnal Sains Ekonomi dan Edukasi
Rizky Putranto
Universitas Nahdlatul Ulama Kalimantan Barat
Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Law, Crime, Criminology & Criminal Justice Social Sciences

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Evaluasi Pengolahan Air Lindi di Area Penimbunan Tailing, Fly Ash, Bottom Ash Berdasarkan Parameter pH, TSS dan Fe (Studi Kasus pada Salah Satu Industri Pengolahan Bauksit di Kalimantan Barat) Nini Malasari; Weli Zuandi; Rizky Putranto
AKSIOMA : Jurnal Sains Ekonomi dan Edukasi Vol. 3 No. 8 (2026): AKSIOMA : Jurnal Sains, Ekonomi dan Edukasi
Publisher : Lembaga Pendidikan dan Penelitian Manggala Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62335/aksioma.v3i8.2843

Abstract

This study aimed to evaluate the effectiveness of the leachate treatment system at a tailings, fly ash, and bottom ash disposal facility of an alumina processing company based on pH, Total Suspended Solids (TSS), and iron (Fe) parameters. A descriptive quantitative research method was employed by collecting leachate samples from the inlet and outlet for five consecutive days. The pH and TSS parameters were measured directly in the field, while Fe concentrations were analyzed in an accredited laboratory. Treatment effectiveness was assessed by comparing water quality before and after treatment in accordance with the effluent quality standards stipulated in the Indonesian Ministry of Environment Regulation No. 34 of 2009. The results showed that the leachate pH was successfully reduced from 12.6–12.7 to 7.2–8.8, meeting the applicable quality standards. TSS concentrations also decreased from 239–798 mg/L to 11–385 mg/L, with an average removal efficiency of 77.47%, and most samples complied with the regulatory standards. In contrast, Fe concentrations increased from 0.42 mg/L to 22.1–30.5 mg/L after treatment, exceeding the maximum allowable limit of 5 mg/L. This increase indicates that the treatment system was ineffective in controlling Fe concentrations, which was likely caused by the remobilization of Fe(OH)₃ precipitates or chemical reactions occurring during the neutralization process. Overall, the leachate treatment system was effective in reducing pH and TSS but requires improvement in Fe removal, particularly during the neutralization and polishing pond stages.
Pemanfaatan Limbah Tailing PT Indonesia Chemical Alumina Sebagai Bahan Campuran Batu Bata untuk Alternatif Pengurangan Limbah Industri Bauksit Faizah Isyiqah; Wahyu Prayitno; Rizky Putranto
AKSIOMA : Jurnal Sains Ekonomi dan Edukasi Vol. 3 No. 8 (2026): AKSIOMA : Jurnal Sains, Ekonomi dan Edukasi
Publisher : Lembaga Pendidikan dan Penelitian Manggala Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62335/aksioma.v3i8.2860

Abstract

This study evaluated the utilization of bauxite tailings from PT Indonesia Chemical Alumina as a mixture material for brick manufacturing to reduce industrial waste. A quantitative experimental method was applied using tailing compositions of 0%, 20%, 40%, and 80%. Bricks were produced through drying, sieving, mixing, molding, drying, and traditional firing according to SNI 15-2094-2000. The 20% tailing composition produced the highest compressive strength of 4.828 MPa, while the 80% composition showed the lowest value of 1.839 MPa. Water absorption increased with higher tailing content, ranging from 29.01% to 43.76%. The utilized tailing volume reached 0.003892 m³ at laboratory scale. The results indicate that bauxite tailings can be used as a brick mixture material and have potential for reducing industrial waste, although optimization is still needed to improve water absorption performance.
Co-Authors Faizah Isyiqah Nini Malasari Wahyu Prayitno Weli Zuandi