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All Journal Jurnal Ilmu Pangan dan Hasil Pertanian JMM (Jurnal Masyarakat Mandiri) Berdikari: Jurnal Pengabdian Masyarakat Indonesia Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE) International Journal of Marine Engineering Innovation and Research Jurnal Abdi Masyarakat Indonesia Journal Serambi Engineering (JSE) SWAGATI: Journal of Community Service JURNAL REKAYASA KIMIA & LINGKUNGAN
Rizka Ayu Yuniar
Institut Teknologi Kalimantan
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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Transforming Tofu Waste into a Growth Medium: Boosting Biomass and Proximate Content of Microalgae Nita Ariestiana Putri; Resti Nurmala Dewi; Rizka Ayu Yuniar; Ranti Amanda Mauliasantri
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 4 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i4.4839

Abstract

This study explores the potential of tofu waste as a cost-effective alternative growth medium for cultivating Spirulina sp. and Nannochloropsis oculata, addressing the high costs of traditional nutrient media that limit large-scale applications. Despite the nutrient richness of tofu waste, its use as a sustainable growth substrate remains underexplored. This research aims to fill this gap by evaluating the growth performance and nutritional suitability of these microalgae in tofu-based media compared to standard controls. The cultivation process was conducted in a closed photobioreactor system, with harvesting methods including flocculation, centrifugation, and filtration. Results showed that tofu waste media supported biomass production comparable to standard cultivation media, with the highest biomass concentrations recorded at the 20% tofu waste treatment, yielding 0.23 ± 0.05 g L-1 for Spirulina sp. and 0.53 ± 0.2 g L-1 for Nannochloropsis oculata. At this concentration, the final COD levels were 840.84 mg L-1and 825.90 mg L-1, respectively. The lipid and protein contents were 2.44% and 1.71% for Spirulina sp., and 1.21% and 1.50% for Nannochloropsis oculata, respectively. These findings demonstrate that tofu waste can serve as an effective and low-cost growth substrate for Spirulina sp. and Nannochloropsis oculata, promoting circular economy principles within many sectors such as energy, food, and agriculture. This study underscores the potential of waste utilization to enhance the sustainability and economic viability of microalgae cultivation.
Innovation in Membrane-Based Batik Liquid Processing at Sekar Buen Batik Small and Medium Enterprises Moch Purwanto; Rizka Ayu Yuniar; Rizka Lestari; Asful Hariyadi; Jefri Pandu Hidayat; Intan Dwi Wahyu Setyo Rini; Asri Prasaningtyas; Didik Kiswoyo
SWAGATI : Journal of Community Service Vol. 3 No. 2 (2025): July
Publisher : Universitas AMIKOM Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24076/swagati.2025v3i2.1994

Abstract

The process of processing batik liquid waste using membrane technology has been implemented to overcome the problem of batik waste in the Sekar Buen Batik IKM Area through a community service program. The method used is the batik liquid waste filtration technique using a membrane. This community service activity is an effort to help strengthen the human resources of the batik industry community in the liquid waste processing process at the Sekar Buen Batik IKM located in North Penajam Paser. The activity has been carried out in several stages, including a preliminary survey, a discussion forum on batik waste problems with a partner team, making a design for a waste processing system based on membrane technology and working practices for the tool. This program can help partners in processing batik wastewater so that it can reduce its negative impact on the environment. The results of the program show that partners have an understanding of the technique of processing batik liquid waste based on membrane technology. Thus, industrial activities at the Sekar Buen Batik IKM can support the green industry area and be more environmentally friendly.
UTILISASI LIMBAH MINYAK JELANTAH MENJADI PRODUK SABUN PADAT DAN LILIN SEBAGAI UPAYA PENERAPAN ZERO WASTE Lusi Ernawati; Rizka Lestari; Rizka Ayu Yuniar; Nita Ariestiana Putri; Asful Hariyadi
JMM (Jurnal Masyarakat Mandiri) Vol 8, No 5 (2024): Oktober
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v8i5.25997

Abstract

Abstrak: Limbah minyak goreng merupakan salah satu limbah rumah tangga yang berpotensi mencemari lingkungan. Residu dari proses penggorengan ini banyak mengandung asam lemak yang memiliki potensi untuk diolah menjadi produk sabun padat dan lilin. Kegiatan pengabdian masyarakat ini ditujukan untuk meningkatkan kemampuan mitra baik hard skill dan soft skill yakni mencakup: (1) mitra mampu memahami prosedur pembuatan sabun dan lilin dengan bahan dasar minyak jelantah, (2) terbentuknya ketrampilan mitra dalam membuat produk berupa sabun padat dan lilin aroma terapi, (3) mengasah kemampuan komunikasi mahasiswa ITK yang terlibat dalam tim panitia kegiatan pengabdian melalui presentasi dan hubungan sosial dengan peserta pelatihan. Selain itu kegiatan ini menjadi salah satu bentuk upaya penerapan zero waste untuk mengubah limbah menjadi produk yang memiliki nilai guna dan bernilai ekonomi. Adapun metode pelaksanaan kegiatan dilakukan melalui transfer of knowledge dan technology dengan langkah-langkah: (1) persiapan, (2) pelaksanaan, dan (3) evaluasi kegiatan. Pelaksanaan kegiatan dilakukan di kampus ITK sebagai host kegiatan berlokasi di lab kimia dasar dengan peserta siswa dan guru SMP 5 Balikpapan sebanyak 20 orang. Kegiatan ini dilakukan melalui beberapa metode yaitu ceramah, tanya jawab dan diskusi kemudian dilanjutkan praktik pembuatan sabun padat dan lilin. Kegiatan ini berjalan dengan baik dan disambut antusias oleh peserta pelatihan. Perubahan pemahaman peserta sebelum dan setelah pelaksanaan kegiatan tentang proses pembuatan sabun dan lilin dari limbah minyak minyak jelantah menjadi indikator keberhasilan kegiatan. Sebanyak 90% peserta (termasuk guru dan para siswa) belum mengetahui bagaimana cara pembuatan sabun padat dan lilin aroma terapi dari minyak jelantah sebelum mengikuti kegiatan pelatihan. Setelah dilakukan pelatihan dan praktik pembuatan, seluruh peserta telah mengetahui cara pembuatan sabun maupun lilin dari minyak jelantah serta diharapkan peserta pelatihan memiliki keterampilant memanfaatkan limbah minyak goreng di rumah.Abstract: One of the household pollutants that might contaminate the environment is cooking oil waste. Many fatty acids found in the frying residue have the ability to be converted into solid soap and wax compounds. This community service project aims to enhance partners' abilities, both hard and soft skills. These abilities include: (1) partners' comprehension of the steps involved in creating soap and candles from used cooking oil; and (2) partners' development of skills in creating solid soap and candle products. aromatherapy; (3) through presentations and interpersonal interactions with training participants, ITK students participating in the committee team for the service activity will improve their communication abilities. Aside from that, this activity is an attempt to achieve zero waste by turning rubbish into useful and valuable goods. The method for implementing activities is carried out through the transfer of knowledge and technology with the steps: (1) preparation, (2) implementation, and (3) evaluation of activities. Twenty students and teachers from SMP 5 Balikpapan participated in the program, which was hosted on the ITK campus in the basic chemistry lab. A variety of techniques were used to carry out this activity, including lectures, Q&A sessions, and group discussions. The process of creating solid soap and candles was the next step. The training participants eagerly welcomed and the activity proceeded smoothly. An indicator of the activity's success is how participants' knowledge of how to make soap and candles from leftover used cooking oil changed before and after the activity. Prior to taking part in the training session, up to 90% of participants—including teachers and students—did not know how to produce solid soap and aromatherapy candles out of spent cooking oil. All participants learned how to produce soap and candles from spent cooking oil after completing training and manufacturing practice, and it is anticipated that training participants would be able to use leftover cooking oil at home.
Co-Authors Andini Angelina Putri Arini Anestesia Purba Asri Prasaningtyas Avanza, Mona Rida Dewi, Resti Nurmala Didik Kiswoyo Dwi Eno Indriyani Dwi Rosa Maharani Erianto, Ricky Gevbry Ranti Ramadhani Simamora Hafizi, Muhammad Ridho Hariyadi, Asful Hijriah Hijriah Hilwa Dwi Putri Nabiha Intan Dwi Wahyu Setyo Rini Jefri Pandu Hidayat Jeni Rahmawati Saputri Kumalaningrum, Amalia Nur Lestari, Rizka Lusi Ernawati Lusi Ernawati Ma'arif, Luluk Majidah Malcheli, Etni Jechonia Mauliasantri, Ranti Amanda Mochammad Purwanto Nita Ariestiana Putri Prabowo, I Putu Deny Arthawan Sugih Purwati, Esty Pusfitasari, Memik Dian Putri Gesan Prabawa Anwar Ranti Amanda Mauliasantri Resti Nurmala Dewi Reza Khoirunnisa Risty Jayanti Yuniar Rizka Lestari Saleha, Shela Samudera, Borneo Bayu Silmina, Silmina Syifa Allysa Yosep, Anestasya