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All Journal Jurnal Teknik Pertanian Sriwijaya Seminar Nasional Lahan Suboptimal PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Indonesian Physical Review
Haisen Hower
Universitas Sriwijaya
Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance Education Engineering Law, Crime, Criminology & Criminal Justice Physics Public Health Social Sciences Other

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PEMISAHAN SUSU KEDELAI DENGAN CARA SENTRIFUGASI Freddy Riando H Nasution; R. Mursidi Mursidi; Haisen Hower
Jurnal Teknik Pertanian Sriwijaya Vol 1, No 2 (2012)
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (376.086 KB)

Abstract

The purpose of this research was to study the effect of centrifugation method in soy milk separation. The research was conducted in the Laboratory of Agricultural Workshop, Department of Agriculture, Faculty of Agriculture Sriwijaya University Indralaya, from January to July 2012. This research was consisted of six levels of centrifugation duration (30, 60, 90, 120, 150 and 180 s) with three replications. Parameters observed were yield, capacity, and separation rate. The result showed that the separation process was completely finished at 60th second of centrifugation time. The average of separation rate was 110 g/s for the 30th second and 82.2 g/s for the 60th second of centrifugation time, with the yield of 83.3%.Keywords: Separation, Soymilk, Centrifugation
Performa Kelistrikan DSSC dari Dye Daun Bungur (Lagerstroemis speciosa) dengan Variasi Konsentrasi Dye Ariyani, Gusniar Paulin; Hower, Haisen; Tamrin, Tamrin; Pratama, Filli
Seminar Nasional Lahan Suboptimal Vol 10, No 1 (2022): Prosiding Seminar Nasional Lahan Suboptimal ke-10 “Revitalisasi Sumber Pangan N
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

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Abstract

Ariyani GP, Hower H, Tamrin T, Pratama F. 2022. DSSC’s electrical performance from dye of bungur leaf (lagerstroemis speciosa) with varied dye concentration. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-10 Tahun 2022, Palembang 27 Oktober 2022. pp. 105-112. Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).Dye Sensitized Solar Cell (DSSC) can convert solar energy into electrical energy using organic matter (dye) as a sensitizer, but it necessary to innovate on dye so that resulting efficiency is optimal. The purpose of this research was to determine the electrical performance of Dye Sensitized Solar Cell (DSSC) with varied dye concentrations of Bungur Leaf Extract (Lagerstroemis speciosa). The research methods included the preparation of the DSSC structure, the preparation and assembly of the DSSC, and DSSC analysis. The chlorophyll content in the leaves of Bungur was calculated based on the absorbance characteristics at wavelengths of 649 nm and 665 nm. The results of the measurement of chlorophyll levels in Bungur leaves were directly proportional to the addition of concentration. The higher the solvent concentration, the more chlorophyll would bind dye. At concentrations of 2% to 8%, the efficiency increased with the values respectively 0.0018%, 0.0047%, 0.0054%, and 0.0114%. Afterwards, at the highest concentration of 10%, the efficiency decreased by 0.0050%. The chlorophyll content in the leaf dye affected the performance of DSSC at a certain concentration limit which was due to the accumulation of dye molecules in the TiO2 pores.
Pemanfaatan Limbah Botol Plastik sebagai Media Tanam Hidrobokas di Desa Putak, Kecamatan Gelumbang, Muara Enim: Utilization of Plastic Bottle Waste as Hydrobokas Planting Media in Putak Village, Gelumbang District, Muara Enim Regency Puspitahati, Puspitahati; Oktarina, Selly; Saputra, Daniel; Triana, Arjuna Neni; Panggabean, Tamaria; Agustina, Hilda; Hower, Haisen; Prima, Fidel Harmanda; Robbani, Syifa'; Aulia, Nurul Izzah; Haryani, Fatria Resti; Setyaaji, Primayoga Harsana; Oktarina, Della
PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 10 No. 5 (2025): PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institute for Research and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/pengabdianmu.v10i5.9052

Abstract

Community service activities in Putak Village aim to educate and empower farmers and housewives in utilizing plastic bottle waste as a medium for planting hydroboks technology for vegetable crops through a simple hydroponic system (NFT). This program is carried out for five months through the stages of field surveys, counseling, technical training, mentoring, and evaluation. The results of the activity show the effectiveness of the use of plastic waste as an environmentally friendly and sustainable planting medium, helping to reduce the pile of plastic waste while providing urban farming solutions in narrow yards. This training successfully improved the community's knowledge and technical skills about hydrobacca systems, which is evident from the enthusiasm of the participants and their success in growing vegetables independently. In addition, this program has a positive impact on the economy by reducing spending on purchasing vegetables and supporting the consumption of pesticide-free fresh food. The environmental impact is also seen through increasing public awareness in managing plastic waste based on the 3R (Reduce, Reuse, Recycle) principle. The success of this program can be increased through continuous education, such as seminars, plastic waste management innovation competitions, and the creation of educational materials in the form of videos and posters to reach more bans.
Optimasi Formulasi Pewarna Alami Vegetasi Rawa untuk DSSC Menggunakan Simplex Lattice Design Azra, Muhammad Rizki; Tamrin, Tamrin; Hower, Haisen
Indonesian Physical Review Vol. 9 No. 1 (2026)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v9i1.528

Abstract

Dye-sensitized solar cells (DSSC) are third-generation photovoltaic devices capable of using natural pigments as photosensitizers. This study aims to optimize the efficiency of DSSC by using formulations of a combination of natural dyes extracted from swamp vegetation: water hyacinth (Eichhornia crassipes), senduduk fruit (Melastoma malabathricum), and primrose willow (Ludwigia peruviana). These dyes, which are rich in chlorophyll, anthocyanins, and carotenoids, respectively, were formulated in different volume combinations using the Simplex Lattice Design (SLD) method. The experimental results show that the mixture of natural dyes can expand the absorption range of visible light wavelengths and enhance the performance of DSSC. The optimal dye combination, consisting of 1.827 mL water hyacinth and 3.173 mL senduduk fruit, yielded an efficiency of 0.050% with a desirability score of 1. This study highlights the potential of swamp vegetation as a sustainable and low-cost alternative for DSSC applications and demonstrates the effective use of statistical modeling to optimize dye formulations.
Co-Authors Ariyani, Gusniar Paulin Azra, Muhammad Rizki Daniel Saputra Filli Pratama Freddy Riando H Nasution Haryani, Fatria Resti Hilda Agustina Nurul Izzah Aulia Oktarina, Della Prima, Fidel Harmanda Puspitahati - R. Mursidi Mursidi Robbani, Syifa Selly Oktarina Setyaaji, Primayoga Harsana Tamaria Panggabean Tamrin Tamrin Triana, Arjuna Neni