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All Journal Dharma Bakti AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Serambi Engineering Jnanadharma
Caecilia Pujiastuti
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Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Other

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Pengembangan Produk Buah Lerak sebagai Bahan Pencuci Kain Batik Indri Parwati; Caecilia Pujiastuti
JNANADHARMA Vol. 2 No. 1 (2024): Januari 2024
Publisher : Fakultas Sains Terapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/jafst.v2i1.4580

Abstract

Buah Lerak dengan nama latin Sapindus Rarak mempunyai kandungan saponin yang sangat tinggi. Saponin ini dikenal sebagai penghasil busa dan dapat berfungsi sebagai salah satu bahan pencuci kain khususnya kain batik. Sebagai bahan pencuci yang ramah lingkungan karena tidak mengandung zat kimia, serta bisa membuat kain menjadi awet dan tidak cepat pudar. Dengan karakteristik yang demikian sehingga sangat baik bila sabun ini digunakan. Tujuan pelatihan ini adalah mengembangkan produk buah lerak dengan dibuat sabun. Dengan teknik pembuatan yang tidak rumit akan mempermudah setiap orang membuatnya. Hasil yang diperoleh dari pelatihan ini adalah berupa sabun lerak yang mempunyai viskositas tinggi. Dari 1 kg buah lerak menghasilkan kurang lebih 5 liter sabun lerak yang berkualitas bagus.
Pengembangan Produk Pengembangan Produk Buah Kemiri Dalam Rangka Meningkatkan Ekonomi Keluarga: Pengembangan Produk Buah Kemiri Dalam Rangka Meningkatkan Ekonomi Keluarga Parwati, Indri; Caecilia Pujiastuti; Sudarsono
DHARMA BAKTI Dharma Bakti-Vol 6 No 1-April 2023
Publisher : LPPM IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/dharma.v6i1.4255

Abstract

Putat Wetan is one of the Kapanewonan Wonosari in Gunungkidul, Yogyakarta. It is a tropical area with many kinds of plants. Candlenut plants (Aleurites moluccana) thrive in the Putat Wetan area. So far, hazelnut fruit is only used as a spice in the kitchen, while the fruit is veru much. So that it is necessary to develop a candlenut processing into a product with a high selling value. One of them is made of hazelnut oil. There are various methods for making hazelnut oil, one of which has been practiced at Putat Wetan. The training for making hazelnut oil is carried out by taking the coconut milk and then heating it so that it will release the oil by itself. Coconut milk is taken by blending and adding water to take all the coconut milk in the candlenut. The results obtained from 250 grams of hazelnut fruit will produce approximately 45 ml of hazelnut oil. Keywords: Candlenut Fruit, Candlenut Oil, Putat Wetan, Warming Up.
Pengaruh Filler Nano Precipitated Calcium Carbonate dan Gliserol Terhadap Bioplastik Pati Jagung , Resa Damayanti; Meldi Ramahdani Intan Pertiwi; Titi Susilowati; Caecilia Pujiastuti; Susilowati
Jurnal Serambi Engineering Vol. 10 No. 1 (2025): Januari 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Precipitated calcium carbonate (PCC) with a size of less than 100 nm has been shown to improve the hardness and strength of a material, making it suitable as a filler in the production of bioplastics. Biodegradable plastics are plastics that can be used like conventional plastics, but can be broken down by microorganisms after use, making them environmentally friendly. The aim of this study is to investigate the effect of adding nanoprecipitated calcium carbonate (PCC) filler and glycerol on the mechanical properties and biodegradation of corn starch-based bioplastics, and to produce biodegradable plastic that meets the Indonesian National Standard (SNI). The method used is melt intercalation to produce bioplastics from corn starch with the addition of nano-PCC and glycerol. The best results were obtained with 12% Nano-PCC and 20% glycerol, which gave a tensile strength of 3.54 MPa, 12% Nano-PCC and 50% glycerol, which gave an elongation percentage of 23.7%, and 4% Nano-PCC and 60% glycerol, which gave 100% biodegradation within 30 days. A higher concentration of Nano-PCC filler increases the tensile strength, improves the elongation percentage and reduces the degradation rate of the plastic. A higher concentration of glycerol decreases tensile strength, increases elongation and increases the degradation rate of the plastic.
Conversion of Magnesium from Bittern with Sodium Phosphate Addition through Precipitation Process Dodik Hendra Saputra; Evlyansa Bunga Rizka Ananda; Dyah Suci Perwitasari; Caecilia Pujiastuti
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Bittern, a by-product of the salt production process, contains high concentrations of magnesium ions, which have significant economic potential and use value in various fields. The objective of this study is to recover magnesium from bittern using sodium phosphate (Na₃PO₄) through the process of chemical precipitation. The reaction between magnesium and phosphate produces magnesium phosphate compounds, which are commercially valuable in the industrial and agricultural sectors. The present study analysed the effect of several process parameters, including pH, temperature and reaction time, on magnesium recovery efficiency. Optimum conditions were obtained at pH 9 with the addition of a 15% concentrated Na₃PO₄ solution. The precipitate formed was then characterised using X-Ray Fluorescence (XRF) to confirm the presence of magnesium phosphate. The findings demonstrate that this method facilitates the effective recovery of magnesium from bittern, exhibiting both high efficiency and good selectivity. This approach has the potential to provide a sustainable solution for the treatment of bittern effluent, whilst concomitantly producing environmentally friendly value-added products.
Effect of Sulfuric Acid Immersion on the Carbon Characteristics of Cocoa Pod Husk Pakpahan, Octavia Marsha; Arya Widira Adi Nugraha; Susilowati; Caecilia Pujiastuti
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 9 No. 3 (2025)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v9i3.815

Abstract

Indonesia faces the challenge of dependency on fossil fuels, making the utilization of Biomass as a renewable energy source increasingly important. Cocoa pod husk, an abundant agricultural waste, has the potential to be converted into high-quality solid fuel through the torrefaction process. This study aims to analyze the effect of sulfuric acid (H?SO?) solution concentration and torrefaction temperature on the characteristics of carbon produced from cocoa pod husk, as well as to compare the results with the Indonesian National Standard (SNI) 8675-2018. The methods used include biomass preparation, soaking with various H?SO? concentrations (0, 0.4, 0.6, 0.8, and 1 M), and torrefaction at different temperatures (250, 275, 300, 325, and 350 °C). The product characteristics were analyzed using proximate analysis, calorific value testing, and SEM EDX. The results showed that increasing the acid concentration and torrefaction temperature significantly reduced the moisture, ash, and volatile matter content, while increasing the fixed carbon and calorific value. The optimum condition was obtained at 1 M H?SO?. soaking and 350 °C torrefaction, producing carbon with 0.17% moisture, 3.00% ash, 61.79% volatile matter, 35.04% fixed carbon, and a calorific value of 8071.34 cal/g. All parameters met the SNI 8675-2018 standard, indicating that acid-pretreated and torrefied cocoa pod husk has strong potential to be developed into high-quality solid fuel. Contribution to Sustainable  Development Goals (SDGs)SDG 7 (Affordable and Clean Energy) SDG 12 (Responsible Consumption and Production) SDG 13 (Climate Action)
Co-Authors , Resa Damayanti Arya Widira Adi Nugraha Cyrilla Indri Parwati Dodik Hendra Saputra Dyah Suci Perwitasari Evlyansa Bunga Rizka Ananda Indri Parwati Meldi Ramahdani Intan Pertiwi Pakpahan, Octavia Marsha Sudarsono Susilowati Titi Susilowati