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All Journal REKAYASA Journal of the Civil Engineering Forum JURNAL REKAYASA KIMIA & LINGKUNGAN
Fildzah, Cantika Almas
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Energy Engineering Physics

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Journal : REKAYASA

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Efektivitas Media Filter Pasir Silika dan Arang Ampas Tebu untuk Menurunkan Warna Menggunakan Filtrasi Upflow Farras Fadillah, Raihan; Badriani, Ririn Endah; Fildzah, Cantika Almas
Rekayasa Vol 18, No 1: April 2025
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v18i1.24483

Abstract

The availability of quality water is crucial for human survival. This study aims to evaluate the efficiency of reducing water colour through the upflow filtration method with variations in silica sand filter media and bagasse charcoal. The research method involves the preparation of research tools and materials, the manufacture of bagasse charcoal, and filter reactors. Experimental stages include raw water preparation and testing, the filtration process, filtration result water collection and testing, and data analysis. The results showed that the colour removal efficiency at 16.72 TCU was highest in reactor 2 (77.07%) and lowest in reactor 3 (45.85%). At 34.28 TCU, the highest efficiency was in reactor 2 (63.24%) and the lowest in reactor 3 (29.09%). The level of 46.08 TCU showed the highest efficiency in reactor 2 (59.33%) and the lowest in reactor 3 (22.53%). Two Ways ANOVA analysis showed that the thickness of bagasse charcoal filter media has a significant effect on colour reduction because the p value is smaller than 0.05. While the thickness of silica sand has no significant effect because the p value is greater than 0.05, The limitation of colour removal is due to the small surface area of silica sand, which cannot absorb a limited amount of dye.
Pengaruh Perbedaan Ketebalan Media Filtrasi Pasir Sungai dan Arang Sekam Padi pada Penurunan Fosfat Air Limbah Calista, Alferina Vania Widya; Badriani, Ririn Endah; Fildzah, Cantika Almas
Rekayasa Vol 17, No 1: April, 2024
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v17i1.21677

Abstract

WWTP Effluent at Regional Hospital (RSD) dr. Soebandi has not fullfilled quality standard of phosphate which is 3 mg/L. This study aims to determine the efficiency of removal phosphate levels and to determine the effect of variations in the thickness of the filtration media reducing phosphate levels in wastewater from hospital wastewater. Method in this research used a Slow Sand Filter Sandwich system with several variables. The thickness ratio of rice husk charcoal and river sand were (R1) 25:5 cm, (R2) 22,5:7,5 cm, (R3) 20:10 cm, (R4) 17,5:12,5 cm and (R5) 0:0 cm. Variations of time used were 120 and 180 minutes. The lowest and highest efficiency was found in reactor 1 (R1) with 120 minutes for contact time at 0% and reactor 4 (R4) with 180 minutes for contact time by 53%. P-value of rice husk charcoal, river sand and contact time is 0,05 that means it have a significant effect on phosphate concentration reduction. T-test result showed significant differences (p-value 0,05), reactors 1 4, reactors 1 5, reactors 2 4, and reactors 2 5.
Adsorpsi Fosfat Pada Limbah Cair Laundry Skala Rumahan di Kabupaten Jember Menggunakan Karbon Aktif dan Zeolit Teraktivasi Listifani, Dinissa Adinda; Pramitasari, Noven; Fildzah, Cantika Almas
Rekayasa Vol 18, No 3: Desember, 2025
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v18i3.31684

Abstract

Household-scale laundry wastewater contains phosphate, which poses significant environmental risks. This study aims to analyze the effectiveness of the adsorption process using activated carbon and activated zeolite in reducing phosphate concentrations from household laundry wastewater. The initial phosphate concentration in the wastewater was 5.19 mg/L. Adsorption was carried out using mass ratios of activated carbon and zeolite of 25:75, 50:50, and 75:25, as well as variations in zeolite activators using HCl and KOH. The research procedure included collecting laundry wastewater samples, drying and activating zeolite using 1 M HCl and 1 M KOH solutions, and mixing the adsorbents with wastewater in a batch system for 60 minutes under constant stirring. After the adsorption process, samples were filtered and analyzed for phosphate concentration using the spectrophotometric method. The results showed that the lowest phosphate concentration after adsorption was achieved with a mass ratio of activated carbon and zeolite activated by KOH at 25:75, which was 1.84 mg/L, with a phosphate removal efficiency of 64.5%. Statistical analysis using two-way ANOVA indicated that the mass ratio of activated carbon and zeolite significantly affected phosphate removal (p-value = 1.1 × 10⁻⁶), while the type of activator did not show a significant effect. This suggests that the appropriate mass ratio of activated carbon and zeolite can be an environmentally friendly and economical alternative for treating small-scale laundry wastewater.
Co-Authors Audiananti Meganandi Kartini Azis, Rovy Agustian Berliana, Rohinoor Intan Bezariani, Calista Safa Calista, Alferina Vania Widya Entin Hidayah Farras Fadillah, Raihan Listifani, Dinissa Adinda Noven Pramitasari Ramadani, Faisal Basri Ririn Endah Badriani, Ririn Endah Wicaksono, Ega Fajar