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All Journal Jurnal Purifikasi Industrial and Domestic Waste Management Journal Serambi Engineering (JSE)
Harmin Sulistiyaning Titah
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering

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The Relationship between Households Average Formal Education Levels and Sanitation Practices in Mojo, Surabaya, Indonesia Wardhani, Widhowati Kesoema; Harmin Sulistiyaning Titah; Mas Agus Mardyanto; Eddy Setiadi Soedjono
Industrial and Domestic Waste Management Volume 5 - Issue 1 - 2025
Publisher : Tecno Scientifica Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53623/idwm.v5i1.600

Abstract

This study explored the relationship between households’ average formal education levels and sanitation practices. Although formal education was intended to prepare individuals for personal and professional life situations, local habits and cultural practices could sometimes be more influential than educational background, as evidenced by urinary habits practiced in the country. These habits played a crucial role in determining whether urine was disposed of in the toilet, processed in a septic tank, or directly entered the drainage system when spilled on the bathroom floor. In this study, the definition of sanitation differed from that previously outlined by the Sustainable Development Goals (SDGs). The SDGs defined sanitation based on the percentage of households that used safely managed services, including handwashing facilities. This study, however, focused on excreta disposal, desludging intervals, septic tank types, and urinary habits, such as whether urine was disposed of on the bathroom floor or in the toilet. These factors were chosen for their ability to accurately reflect the actual conditions observed in the study area. A survey was conducted among 100 households, and data were analyzed using Analysis of Variance (ANOVA). The results revealed no relationship between households’ average formal education levels and sanitation practices. This analysis suggested that other factors, such as cultural beliefs and environmental habits, may have influenced sanitation practices.
Microalgae Cultivation and Its Potential for Phycoremediation Agent Imroatin Sakinah Rahmatina; Harmin Sulistiyaning Titah
Jurnal Serambi Engineering Vol. 10 No. 2 (2025): April 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Microalgae can be an ecological remediation agent known as phycoremediation. Understanding these factors is critical in producing the expected products efficiently. Several factors affect microalgae growth, including nutrients, temperature, pH, CO2 concentration, lighting, microalgae photosynthesis processes, and hydrodynamic factors. Microalgae Chlorella vulgaris has the potential to survive in media contaminated with heavy metal and high salinity levels. It can reduce the concentration of heavy metals in water through several mechanisms. Further research must be conducted to determine the factors influencing microalgae growth. The research was conducted to observe the growth rate of microalgae in a controlled photobioreactor. The cultivation was carried out in a plastic photobioreactor equipped with aeration, lighting, and the addition of nutrients. The first stage of the research was observations on C. vulgaris growth with 30% inoculum and 20% inoculum. The C. vulgaris growth rate is 0.133 cells/mL/day and 0.927 cells/mL/day, respectively. The second stage of the research was observations on C. vulgaris growth with 20‰ salinity, and the variation used is the aeration, 3 L/min, and 4 L/min. The C. vulgaris growth rate is 0.263 cells/mL/day and 0.236 cells/mL/day, respectively.
EFEKTIVITAS PERMEABLE REACTIVE BARRIER (PRB) BERBASIS BIOCHAR TEMPURUNG KELAPA DENGAN PEREKAT SEMEN UNTUK REMEDIASI AIR TERCEMAR LOGAM TIMBAL II (PB2+) Muhammad Ishthilakhul Choiri; Ipung Fitri Purwanti; Bieby Voijant Tangahu; Harmin Sulistiyaning Titah; Mashudi Mashudi; Sarwoko Mangkoedihardjo
Purifikasi Vol 24 No 1 (2025): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Planning, and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/purifikasi.v24i1.501

Abstract

Pencemaran air tanah oleh logam berat timbal (Pb) berdampak buruk bagi kesehatan manusia dan lingkungan. Logam berat Pb merupakan salah satu polutan yang disoroti karena bersifat toksik, persisten, dan bioakumulatif. Berbagai metode telah dikembangkan untuk remediasi air tanah tercemar Pb, tetapi sebagian besar memakan biaya yang mahal dan memerlukan waktu yang lama. Sebagai alternatif, teknologi Permeable Reactive Barrier (PRB) menawarkan pendekatan pasif in-situ yang efisien untuk mengurangi kadar logam berat dalam air. Implementasi PRB sudah beberapa kali digunakan dalam mereduksi berbagai kontaminan seperti Cr, Zn, Cu, Pb dan As. Hingga saat ini PRB terus dikembangkan untuk meningkatkan efektivitasnya dalam remediasi air tanah. Penelitian ini bertujuan mengevaluasi efektivitas PRB berbahan biochar tempurung kelapa dengan perekat semen dalam meremediasi air tanah berkadar Pb 100 mg/L dengan memvariasikan ketebalan (2 cm dan 4 cm). Reaktor beraliran vertikal dioperasikan selama 24 jam untuk mengamati performa penyisihan. Hasil menunjukkan bahwa PRB dengan ketebalan 2 cm menghasilkan efisiensi penyisihan tertinggi, yakni 99,9% dalam waktu detensi 6 jam, melalui mekanisme adsorpsi, presipitasi, dan interaksi ionik. Presipitasi Pb(OH)2 berperan penting pada pH basa yang dihasilkan oleh hidrasi semen, meskipun kondisi ini memerlukan pengaturan pH efluen sebelum dilepas ke lingkungan. Temuan ini memberikan dasar ilmiah untuk pengembangan PRB berbasis biochar-semen secara lebih luas, termasuk optimasi media, pengujian skala lapangan, dan penerapan pada sistem pengolahan air tercemar lainnya.
UJI RETANG DOSIS RED MUD SEBAGAI AMANDEMEN TANAH DENGAN KOMBINASI PUPUK KANDANG TERHADAP PERTUMBUHAN TANAMAN SAWI (Brassica juncea) Natasya Febriani Fauziah; Harmin Sulistiyaning Titah; Bieby Voijant Tangahu; Andriyan Yulikasari; Ervin Nurhayati; Isni Arliyani
Purifikasi Vol 24 No 1 (2025): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Planning, and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/purifikasi.v24i1.504

Abstract

Pemanfaatan red mud (RM), limbah samping hasil pemurnian bauksit yang bersifat sangat basa, memiliki potensi sebagai amandemen tanah dalam kerangka ekonomi sirkular, meskipun penerapannya masih terkendala oleh pH yang tinggi, kandungan natrium, dan potensi toksisitas logam berat. Penelitian ini bertujuan mengevaluasi rentang toleransi Brassica juncea terhadap variasi dosis RM sebagai manademen yang dikombinasikan dengan pupuk kandang. Uji rentang dosis dilakukan dengan variasi RM sebesar 3%, 5%, 10%, 15%, dan 20% yang dicampurkan dengan tanah kebun dan pupuk kandang (rasio 2:1), serta kontrol berupa tanah kebun. Parameter pertumbuhan (tinggi tanaman, jumlah daun, kandungan klorofil, biomassa basah dan kering) serta karakteristik kimia tanah (kandungan nutrien dan logam) diamati selama 14 hari. Hasil menunjukkan bahwa dosis RM hingga 10% masih mendukung kelangsungan hidup tanaman, sementara dosis 15% dan 20% menyebabkan kematian akibat peningkatan kandungan Cr, V, Ni, dan Sc. Dosis 5% menunjukkan kinerja optimal dengan peningkatan tinggi tanaman sebesar 20%, jumlah daun 25%, kandungan klorofil 53%, dan biomassa kering 156% dibanding kontrol. Kombinasi RM dan pupuk kandang secara sinergis meningkatkan ketersediaan hara (N, P, K) sekaligus menjaga kadar logam berat tetap di bawah ambang batas aman FAO/WHO. Studi ini menunjukkan bahwa RM berpotensi dimanfaatkan sebagai amandemen tanah secara berkelanjutan apabila digunakan dalam dosis terkendali dan dikombinasikan dengan bahan organik. Penelitian ini memberikan dasar ilmiah awal untuk mendukung strategi pemanfaatan limbah industri dalam sistem pertanian berbasis ekonomi sirkular.
EFFICIENCY OF SOIL WASHING IN REMOVING PETROLEUM HYDROCARBON RESIDUES Rasyidan Rizqi Ramadhan; Harmin Sulistiyaning Titah; Nur ’Izzati Ismail
Purifikasi Vol 25 No 1 (2026): Journal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Planning, and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/purifikasi.v25i1.538

Abstract

Soil contamination by petroleum hydrocarbon residues, particularly from used motor oil, requires effective and relatively simple remediation technology. This study evaluated the efficiency of pilot-scale soil washing using the non-ionic surfactant Polysorbate 80 to remove Total Petroleum Hydrocarbon (TPH) from artificially contaminated sandy soil. The contaminated medium was prepared by mixing commercial sand and used motor oil at a ratio of 85:15, resulting in an initial TPH concentration of 13.5039% or 135,039.42 mg/kg. Pilot-scale batch soil washing was conducted using a drum rotary agitator at 50 rpm with variations in Polysorbate 80 concentration (0.5%, 1.5%, and 2.5%), washing time (30, 60, and 90 min), and solid/liquid ratio (1:5, 1:10, and 1:15). TPH was analyzed using a gravimetric method, and the removal efficiency was calculated based on the difference between the initial and final concentrations. The results showed that soil washing removed TPH with efficiencies ranging from 68.72% to 92.40%. The highest efficiency of 92.40% was achieved at 1.5% Polysorbate 80, a 60 min washing time, and a 1:10 solid/liquid ratio. A low surfactant concentration of 0.5% also produced a high removal efficiency, reaching 89.66% at 30 min and a 1:10 ratio. In contrast, a 2.5% surfactant concentration combined with a short washing time produced the lowest efficiency, presumably due to stable emulsion formation and mass-transfer limitations. These findings indicate that pilot-scale soil washing with Polysorbate 80 is effective in removing TPH from sandy soils, particularly under low-to-moderate surfactant concentrations and a 30–60 min contact time.
Co-Authors Andriyan Yulikasari Bieby Voijant Tangahu Eddy Setiadi Soedjono Ervin Nurhayati Imroatin Sakinah Rahmatina Ipung Fitri Purwanti Isni Arliyani Mas Agus Mardyanto Mashudi Mashudi Muhammad Ishthilakhul Choiri Natasya Febriani Fauziah Nur ’Izzati Ismail Rasyidan Rizqi Ramadhan Sarwoko Mangkoedihardjo Wardhani, Widhowati Kesoema