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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Pengabdian Masyarakat Charitas Serambi Engineering
Roselyn Indah Kurniati
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Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Engineering Environmental Science Industrial & Manufacturing Engineering Social Sciences

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Efisiensi Penurunan Kadar Kalsium Pada Air Laut Dengan Metoda Penukar Ion Yang Memanfaatkan Tanah Roselyn Indah Kurniati; Shinta Elystia; Zultiniar Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Source of water in Bengkalis is difficult. Sea water can be a source of water in there. Once of alternative can be process sea water be clean water use ion exchange with clay. This experiment use coloumn with diameter 2 inchi and high 1,2 meter. Media who used is clay. Ratention time and particle measure used variation of this experiment. Rate of retention time are 60, 120, 180 minute and particle measure are -3+5, -5+10, -10+15 mesh. Concentration Ca before process is 128 mg/l and after process is 58,4-8,8 mg/l of variation. Over all, clay can be cause of concentration Ca. Finally, retention time and particle measure give to effect to cause metal in seawater with efisiensi Ca are 54,38-93,12%, with a CEC of clay is 122,93 meq / 100g.Keywords : Seawater, Ion Exchange, Clay, Ratention Time, Particle Measure
Aksi Bersih Sampah di Pantai Wisata Tanjung Bemban dalam Rangka World Clean Up Day Kota Batam 2024 PRAJATI, GITA; Handi Wilujeng Nugroho; Yosef Adicita; Kurniawan Hamidi; Roselyn Indah Kurniati; Lina Hanarisanty; Zefri Azharman
Jurnal Pengabdian Masyarakat Charitas Vol. 5 No. 01 (2025): Jurnal Pengabdian Masyarakat Charitas
Publisher : Program Studi Teknik Industri, Fakultas Teknik, Universitas Katolik Indonesia Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/charitas.v5i01.6709

Abstract

World Cleanup Day gives positive impact to environmental care activities in Indonesia. Environmental Services of Batam participated into World Cleanup Day action by sorting waste from public residence in 2021. In the year of 2024, Batam still involved in World Cleanup Day action. One of the location was Tanjung Bemban, Nongsa. The purpose of this social service is to partipate in world clean up day by cleaning up the waste in Tanjung Bemban beach. The method is application of participatory approach. There are two steps in this action. The first step is introduction and preparation that conducted by committee of World Cleanup Day. Whereas, the second step is clean up the waste in the specified locations. The waste classified into four categories. Participants collected and weighted the waste to the committee. Beach Cleanup Day 2024 in Tanjung Bemban can collected waste around 235.3 kilograms, consist of 97.3 kilograms organic waste, 88.4 kilograms plastic waste and 49.6 kilograms other type of waste. This action also involved many participants from various parties, such as government, military, NGOs, universities and schools. Beach clean up action expected to increase practice in waste management.
Variasi Konsentrasi Air Limbah Cucian Laundry dalam Menentukan Range Finding Test Hanarisanty, Lina; Roselyn Indah Kurniati; Arini Wulan Sari; Ferdy Ashari Syawal
Jurnal Serambi Engineering Vol. 11 No. 1 (2026): Januari 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Laundry wastewater contains phosphates, detergents and bleaching agents which are harmful to the environment if not treated first. Phytoremediation is an environmentally friendly technology that uses plants to treat wastewater, including laundry wastewater. One such plant is Eichhornia crassipes, also known as water hyacinth. Prior to phytoremediation, acclimatisation and Range Finding Tests (RFTs) were conducted to determine the tolerance limits of the water hyacinth to laundry wastewater concentrations. Acclimatisation took place over 7 days, during which time RFT tests were conducted with wastewater concentration variations of 0%, 30%, 50%, 70% and 100%. Additionally, wet and dry weight measurements were carried out after the RFT tests. During acclimatisation, the water hyacinth plants thrived in the fresh conditions, producing new shoots and fibrous roots. The RFT tests showed that the optimal wastewater concentration was 30 mg/L, as evidenced by green leaves and healthy roots. The greatest decreases in wet weight of the roots and leaves (amounting to 29.99 g and 38.95 g respectively) occurred at a concentration of 0 mg/L. The greatest decrease in wet weight of the stems (76 g) occurred at a concentration of 50 mg/L. Wet and dry weight measurements were conducted to determine the absorbed water content. Therefore, water hyacinth plants can serve as phytoremediators in further liquid waste treatment processes.
Co-Authors Adicita, Yosef Arini Wulan Sari Ferdy Ashari Syawal Hanarisanty, Lina Handi Wilujeng Nugroho Kurniawan Hamidi Lina Hanarisanty Prajati, Gita Shinta Elystia Zefri Azharman Zultiniar Zultiniar