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All Journal CHEMICA Jurnal Teknik Kimia Jurnal Global Ilmiah
Tutuk Djoko Kusworo
Universitas Diponegoro
Chemical Engineering, Chemistry & Bioengineering Economics, Econometrics & Finance Energy Environmental Science Medicine & Pharmacology Social Sciences

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Rubber Industry Wastewater Treatment Using A Combination Of Ozonation And Modified PES-Nano ZnO Membranes Enny Nurmalasari; Tutuk Djoko Kusworo; Miftahul Khairati
CHEMICA: Jurnal Teknik Kimia Vol 9, No 3 (2022): December 2022
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v9i3.24658

Abstract

Until now, the application of a combination of biological, physical, and chemical methods to eliminate contaminants from the rubber industry wastewater has not been reported. The purpose of our investigation is to analyze the use of membrane techniques and the effect of pre-treatment of industrial rubber wastewater—pre-treatment by ozone on the performance of the modified PES-nano ZnO membrane. Modified PES-nano ZnO membranes were made with phase inversion techniques and membrane performance based on flux and rejection. Filtration processes with cross-flow filtration systems and ozonation time variations were 1, 2, 3 hours. The ozonation process influenced membrane rejection. The membrane rejection value increased to 89.6%, and ammonia decreased to 4.3 mg/L. The flux value increased to 10.2 L.M-2.h-1 in 1h Ozonatian and decreased with the increasing of filtration time. Pre-treatment with ozonation can increase membrane selectivity and extend membrane life during the filtration process due to reduced fouling. The pre-treatment process time with 3 hours-ozonation was the most violent rejection even though the flux value has decreased
Performance Evaluation of Rotary Dryer and Granulator in NPK Steam Granulation Plant Production Department of IIB PT Petrokimia Gresik Maria Asel Pranoto Kusuma; Feni Mutiara Lasniroha Sagala; Tutuk Djoko Kusworo; Satrio Dwi Laksono
Jurnal Global Ilmiah Vol. 1 No. 5 (2024): Jurnal Global Ilmiah
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/jgi.v1i5.44

Abstract

PT. Petrokimia Gresik, a subsidiary of Indonesian fertilizer company PT. Indonesian Fertilizer, has three main plants: Production I, II, and III. Production IIB consists of production units Phonska IV, NPK Granulation II, III, and IV and ZK. Granulated NPK II Fertilizer is a processing unit that meets quality standards. The process involves feeding raw materials, preparing slurries, granulating, drying, screening, cooling, and screening. Supporting materials include powder coating, oil coating, and pigment. The granulation stage is crucial, where raw materials are agglomerated. The NPK Granulation Department of IIB uses various equipment, including a rotary dryer with a thermal efficiency of 79.997%. The total mass balance for the granulator, dryer, cooler, screen, and coater in NPK Granulation II for 15-15-15 fertilizer formula is 1058,096 tons/day.
Co-Authors Enny Nurmalasari Feni Mutiara Lasniroha Sagala Maria Asel Pranoto Kusuma Miftahul Khairati Satrio Dwi Laksono