Modeling and Optimization of Manganese Carbonate Precipitation Using  Response Surface Methodology and Central Composite Rotatable Design

Muanda, Meschack Mukunga; Omalanga, Pele Pascal Daniel

doi:10.18540/jcecvl7iss3pp12632-01-22e

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…Pengolahan menggunakan bahan X memang menghasilkan prosentase removal e-ISSN 2798-6357 | p-ISSN 2808-3105 93/94 mangan yang rendah. Hal ini disebabkan oleh karakteristik mangan yang akan mengendap optimum pada pH 9 [9]. Namun dengan menggunakan bahan X, kadar mangan menjadi 2,98 mg/L, telah turun jauh dibawah Baku Mutunya.…”

Section: Waktu Reaksiunclassified

XYZ sebagai Bahan Pengganti Teknik Aerasi pada Pengolahan Air Asam Tambang

Setiawan

2023

JRTP

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Abstract. Acid mine drainage (AMD) was an environmental issue that must be managed properly. Treating of AMD with the active method was carried out by adding alkaline materials. The treating stages begin with aeration, neutralization, sedimentation, and filtration. This activity aims to determine the effectiveness of XYZ material in reducing ferrous levels in AMD. Experiments were carried out on AMD samples with a pH of 2.50, a total Fe content of 250 mg/L, Fe 2+ 0.65 mg/L, Mn 10 mg/L, and TSS 25.0 mg/L. The test results showed that the addition of 1.3 g XYZ material increased the pH to 6.87, the total Fe content to 0.84 mg/L, Fe2+ to 0.09, and Mn to 2.98 mg/L. While the TSS content decreased from 25.0 mg/L to 17.0 mg/L. The percentage of Fe2+ removal reached 86.2%. This value was higher compared to other aeration methods. It was proven that the XYZ material was more effective because the aeration technique was no longer needed in AMD processing. This was the novelty of the research carried out. Abstrak. Air Asam Tambang (AAT) merupakan salah satu isu lingkungan yang harus dikelola dengan baik. Pengolahan AAT dengan metode aktif dilakukan dengan menambahkan bahan alkali. Tahapan pengolahannya dimulai dengan aerasi, netralisasi, sedimentasi, dan filtrasi. Kegiatan ini bertujuan untuk mengetahui efektifitas bahan XYZ dalam mengurangi kadar fero dalam AAT. Ujicoba telah dilakukan terhadap percontoh AAT dengan pH 2,50, kadar Fe total 250 mg/L, Fe 2+ 0,65 mg/L, Mn 10 mg/L, dan TSS 25,0 mg/L. Hasil ujicoba menunjukkan bahwa dengan penambahan 1,3 g bahan XYZ dapat menaikkan pH menjadi 6,87, kadar Fe total menjadi 0,84 mg/L, Fe2+ menjadi 0,09, dan Mn menjadi 2,98 mg/L. sementara kandungan TSS berkurang dari 25,0 mg/L menjadi 17,0 mg/L. Prosentase removal Fe2+ mencapai 86,2%. Nilai ini lebih tinggi dibandingkan dengan metode aerasi lainnya. Terbukti bahwa bahan XYZ lebih efektif karena teknik aerasi tidak diperlukan lagi dalam pengolahan AAT. Hal ini merupakan kebaruan dari kegiatan yang dilakukan.

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Section: Waktu Reaksiunclassified

XYZ sebagai Bahan Pengganti Teknik Aerasi pada Pengolahan Air Asam Tambang

Setiawan

2023

JRTP

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Development of a chemical-free process utilizing ozone oxidative precipitation for the recovery of cobalt and manganese from acid mine drainage

Shekarian

Hassas

Rezaee

et al. 2022

Journal of Environmental Chemical Engineering

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An Environmentally Benign Approach for Gold Recovery From Gold-Bearing Ore: Modeling and Optimization

Muanda¹,

Omalanga²,

ANNYFA³

et al. 2023

EJMSE

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The current work focuses on the extraction of gold using alpha-cyclodextrin (α-CD) from the Kimpese quarry in the Democratic Republic of the Congo, through an environmentally friendly gold process as an alternative to the amalgamation process. The ore was sampled and characterized using atomic absorption spectroscopy (AAS) prior to the experiments, and the analysis revealed 0.08% of gold. The ore was then leached with modified aqua regia (MAR). Time, HBr concentration, pH, and stirring speed were all varied during leaching to highlight the parameters that influence the leaching yield. The optimum conditions were determined using analysis of variance (ANOVA) and response surface methodology (RSM), implying time, HBr concentration, pH, and stirring speed of 6 hours, 80g/l, 1, and 800rpm, respectively, and a leaching percentage of 98.6928%. Following leaching, neutralization tests with potassium hydroxide (KOH) were performed by varying the following parameters: time, KOH concentration, and pH. The following factors were varied in the extraction tests after neutralization: time, α-CD concentration, pH. The optimal parameters were as follows: time of 30 minutes, α-CD concentration of 8.8639g/l, and pH of 6, with yield of 89.7350%. This method of recovering gold from ore using α-CD is inexpensive and does not harm the environment.

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Modeling and Optimization of Manganese Carbonate Precipitation Using Response Surface Methodology and Central Composite Rotatable Design

Cited by 3 publications

References 16 publications

XYZ sebagai Bahan Pengganti Teknik Aerasi pada Pengolahan Air Asam Tambang

XYZ sebagai Bahan Pengganti Teknik Aerasi pada Pengolahan Air Asam Tambang

Development of a chemical-free process utilizing ozone oxidative precipitation for the recovery of cobalt and manganese from acid mine drainage

An Environmentally Benign Approach for Gold Recovery From Gold-Bearing Ore: Modeling and Optimization

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