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Isra Mouludi
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Politeknik ATI Padang Jl Bungo Pasang Tabing Padang, 25171 Indonesia
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INDONESIA
REACTOR : Journal of Research On Chemistry And Engineering
Published by Politeknik ATI Padang
ISSN : -     EISSN : 27460401     DOI : -
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Energy
1. Bioenergy 2. Waste Treatment 3. Simulation and control process 4. Advanced materials 5. Bioengineering (chemical & massa) 6. Bioprocess 7. General chemistry 8. Applied chemistry 9. Biochemical 10. and other as problem solving in the field of environment, energy, food, agriculture, medical and pharmacy
Arjuna Subject : Teknik Kimia (semua kategori) - Teknik Kimia (Lain-Lain)
Articles 3 Documents
 1 
Search results for , issue "Vol. 6 No. 2 (2025)" : 3 Documents clear
Pengaruh Waktu Dan Temperatur Pelindian Terhadap Hasil Ekstraksi Nikel Laterit Menggunakan H2SO4 Pada Tekanan Atmosfer Malik, Yulianti; Hardiono, Rizky; Septiawan, Muh. Rdwan
REACTOR: Journal of Research on Chemistry and Engineering Vol. 6 No. 2 (2025)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v6i2.7

Abstract

The rising demand for nickel in electric vehicle batteries drives the adoption of hydrometallurgical processing, notably Atmospheric Leaching (AL) and High-Pressure Acid Leaching (HPAL), primarily using acid solutions like sulfuric acid for Ni extraction. Although AL offers lower operating costs and simpler equipment, it is typically challenged by high levels of Fe impurities and elevated acid consumption compared to HPAL. To address these limitations, this research investigated optimizing AL by manipulating key process parameters: time and temperature. The study focused on lateritic nickel ore leaching using 0.8 M sulfuric acid, maintaining a solid-to-liquid (S/L) ratio of 20% and a stirring speed of 350 rpm. Experiments were conducted across temperatures of 75, 85, and 95oC and durations from 2 to 8 hours. The optimal result was achieved at 95oC for 8 hours, yielding the highest Ni extraction of 55.81% and the lowest total acid consumption of 1399.45 kg/ton of ore. This indicates that increased temperature and duration accelerate the Ni reaction rate with the sulfuric acid. The extraction of Fe rapid initially decreased significantly over time due to saturation, which directly contributed to the desirable reduction in overall acid consumption.
Optimasi Penghilangan COD dan Warna dengan Proses Koagulasi, Flokulasi dan Sedimentasi untuk Pengolahan Air Limbah Industri Kertas Sutopo, Ulung Muhammad; Fariza, Elfia; Sartika, Lastri; Desmiarti, Reni
REACTOR: Journal of Research on Chemistry and Engineering Vol. 6 No. 2 (2025)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v6i2.9

Abstract

Pulp and paper industry wastewater contains very potential pollutants, especially suspended solids, BOD, and COD which are stable colloids and difficult to separate. To reduce the COD content in paper industry wastewater, the addition of coagulant chemicals is needed. The coagulant used is 20% poly aluminum chloride (PAC) with a variation of 100-600 mg/L and polymer with a dose of 1-6 mg/L to reduce COD and color in wastewater treatment. The settling time used is 1-25 minutes. The effect of adding PAC coagulant is able to reduce COD and color of wastewater at the optimal point, but when the addition of PAC is excessive, the COD and color of the wastewater increase again. The results found that the optimum conditions occurred at a PAC dosage of 400 mg/L and a polymer dosage of 4 mg/L with a settling time of 20 minutes, resulting in a reduction of TSS, COD, and color to 12 mg/L, 102 mg/L, and 123 PtCo, respectively. The combination of coagulation-flocculation-sedimentation processes under these optimum conditions proved effective as a tertiary treatment to meet wastewater quality standards for the paper industry
Pengaruh Jamur Tiram dan Lama Fermentasi Terhadap Karakteristik Fisik Biofoam Sabut Kelapa dan Pulp Kopi Rahmad, Dedy; Hasni, Dian; Kemala Putri, Dwi; Akbar, Addin; Jaeba, Kushisa Atta
REACTOR: Journal of Research on Chemistry and Engineering Vol. 6 No. 2 (2025)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v6i2.157

Abstract

The urge to develop more sustainable foam for food packaging is increasing due to the high potential danger of the usage of Styrofoam as food packaging. This study aimed to determine the physical qualities of bio-foam, which was prepared using Pleurotus ostreatus F2 as the fungal microorganisms and the composite of coconut fiber and coffee pulp as substrates. This research was designed as Randomized Complex Block Design with two factors and four repetitions. The ANOVA results showed that both independent factors and their interactions have a very significant effect on the density, porosity, water absorption, and biodegradability of the resulting bio-foam. The higher percentage of Pleurotus ostreatus F2 added (60%) tended to produce bio-foam with lower density, porosity, and water absorption compared to the lower percentage (50%). However, prolonged fermentation up to 5 days tended to increase density, porosity and water absorption of bio-foam. Resulted biofoam has potential to be used as food packaging with further improvement to strengthen the matrix and enhance ethe water absorption quality.

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