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All Journal Dekave : Jurnal Desain Komunikasi Visual Jurnal Pendidikan Kimia Universitas Riau Prosiding Seminar Nasional Teknoka Jurnal Rekayasa Material, Manufaktur & Energi Jurnal Rekayasa Hijau Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Mitra Akademia: Jurnal Pengabdian Masyarakat Practice of Fashion and Textile Education Journal Journal Of Research and Education Chemistry (JREC) JURNAL POLI-TEKNOLOGI Jurnal Penelitian Rumpun Ilmu Teknik Jurnal Teknologi Pangan dan Industri Perkebunan Jurnal Inkofar
Emmidia Djonaedi
Politeknik Negeri Jakarta
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Pemanfaatan Sabut Kelapa Sebagai Bahan Dasar Tinta Batik Hitam Melalui Proses Pirolisis Hapsari, Putri Uniqa Hapsari; Kusumantoro, HB. Rudi; Djonaedi, Emmidia
Jurnal Pendidikan Kimia Universitas Riau Vol. 10 No. 2 (2025): Juli: Jurnal Pendidikan Kimia Universitas Riau
Publisher : Program Studi Pendidikan Kimia, FKIP, Universitas Riau

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Abstract

Batik is a world-recognized cultural heritage of Indonesia, but the batik industry still relies on synthetic dyes that pollute the environment, especially water pollution. This study aims to develop natural black batik ink from coconut fibre through pyrolysis and analyse its colour density. The process is carried out by heating coconut fibre at 150-250°C to produce charcoal, which is then pulverized into pigments. The pigments were mixed with distilled water (variation of 1-7 g pigment and 6-12 mL distilled water) and tested for density using a spectrodensitometer. The results showed that the formulation of 6 grams of pigment and 11 mL of distilled water produced the highest concentration (2.68). The average concentration of all samples reached 2.57, indicating the consistency of pigment quality. This study proves that the ratio of pigment and solvent affects colour density, while providing an environmentally friendly solution by utilizing coconut fibre waste as a natural dye with economic value.
UJI EFEKTIVITAS METODE PEMBUATAN BIOKERAMIK CANGKANG TELUR MENGGUNAKAN SODIUM ALGINAT DAN PATI JAGUNG Khalyla Hafsa Khairunnisa; Mustofa Kamal, Dianta; Djonaedi, Emmidia
Journal of Research and Education Chemistry Vol. 7 No. 2 (2025): Oktober
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jrec.2025.vol7(2).20065

Abstract

The utilization of eggshell waste in Indonesia is still very low, which is only around 7-8% of the total waste of 611,790 tons per year, although the calcium carbonate content has the potential to be used as a raw material for bioceramics. Suboptimal utilization risks polluting the environment. This study aims to develop the utilization of eggshell waste into bioceramics by comparing the effectiveness of two types of binders, namely sodium alginate and corn starch. The manufacturing method includes the process of powdering eggshells, mixing with binders, molding, and drying. Evaluation is carried out through density testing, water absorption, and degradation tests in water. The results showed that bioceramics with corn starch had a higher density (2.05 g/m³), lower water absorption (34.5%), and neutral pH of the degradation water (pH 7), compared to sodium alginate which had a lower density and higher absorption (50.5%) with pH 8. These findings indicate that corn starch is superior in forming stable and solid bioceramics, so it has the potential to be applied in environmentally friendly craft products and supports the reduction of organic waste in the community.
SUSTAINABLE DYEING OF TEXTILES USING TOMATO WASTE EXTRACTS: INFLUENCE OF FESO₄ MORDANT ON COLOR QUALITY Fadiyah Ayu Rahmawati; Emmidia Djonaedi; Rachmah Nanda Kartika
Practice of Fashion and Textile Education Journal Vol. 5 No. 2 (2025): Practice of Fashion and Textile Education Journal
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/pftj.v5i2.56778

Abstract

The use of tomato waste as an effort to reduce the accumulation of organic waste and environmental pollution due to textile dyeing requires mordantt material as a color fixer. This study aims to analyze the effectiveness of iron Fe(SO₄) mordantt in dyeing cotton fabrics using natural dyes from tomato waste extract. The research was carried out by an experimental method, namely by dyeing textiles in the form of cotton cloth with dyeing techniques using the results of tomato waste extracts with variations in mordantt iron concentrations, namely 0%, 2%, 5%, and 7%. The staining results were analyzed using a spectrodensitometer to measure the CIEL*a*b* value and test the color fastness to light. The results showed that 7% iron mordant produced the most intense red-yellow color with an L* value of 64.38, an a* value of 28.7, and a b* value of 51.22. The staining results with a 7% iron mordantt had a very good color fade resistance value (scale 4-5), while the sample without a mordant had a very poor fade resistance (ΔE=25.19). Iron mordant Fe(SO₄) has been proven to have good effectiveness in producing more intense colors in fabric dyeing results and increasing color fastness in textile dyeing results with tomato waste extract.
Pemanfaatan Sabut Kelapa Sebagai Bahan Dasar Tinta Batik Hitam Melalui ProsesPirolisis: Analisis Kepekatan Warna dan Potensi Ramah Lingkungan Hitam Melalui Proses Pirolisis: Analisis Kepekatan Warna dan Potensi Ramah Lingkungan PUTRI UNIQA HAPSARI; Heribertus Rudi Kusumantoro; Emmidia Djonaedi
Jurnal Teknologi Pangan dan Industri Perkebunan (LIPIDA) Vol 5 No 2 (2025)
Publisher : Politeknik Negeri Ketapang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58466/4zxk6w11

Abstract

Batik is a world-recognized cultural heritage of Indonesia, but the batik industry stillrelies on synthetic dyes that pollute the environment, especially water pollution. Thisstudy aims to develop natural black batik ink from coconut fiber through pyrolysis andanalyze its color density. The process is carried out by heating coconut fiber at 150-250°C to produce charcoal, which is then pulverized into pigments. The pigments weremixed with distilled water (variation of 1-7 g pigment and 6-12 mL distilled water) andtested for density using a spectrodensitometer. The results showed that the formulationof 6 grams of pigment and 11 mL of distilled water produced the highest concentration(2.68). The average concentration of all samples reached 2.57, indicating theconsistency of pigment quality. This study proves that the ratio of pigment and solventaffects color density, while providing an environmentally friendly solution by utilizingcoconut fiber waste as a natural dye with economic value.
Studi Pengaruh Pengujian Solid Content Terhadap Karakteristik Tinta Sablon Alami Berbahan Dasar Kulit Buah Naga Meraheristik Tinta Sablon Alami Berbahan Dasar Kulit Buah Naga Merah Fadhil Sukma Ramadhan; Emmidia Djonaedi; Rachmah Nanda Kartika
Jurnal Teknologi Pangan dan Industri Perkebunan (LIPIDA) Vol 5 No 2 (2025)
Publisher : Politeknik Negeri Ketapang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58466/rdv5dc51

Abstract

Red dragon fruit peel contains betacyanin pigment, which has the potential as a natural colorant. This study aims to evaluate the effect of solid content on the characteristics of screen printing ink made from red dragon fruit peel. Solid content plays a crucial role in determining ink quality, particularly in terms of coverage and colorfastness. Three samples were prepared with varying pigment amounts: 10 grams (A1), 15 grams (A2), and 25 grams (A3), while the gum arabic content remained constant at 20 grams. The analysis showed that sample A2 had the highest solid content at 77.29%, followed by A3 (65.27%) and A1 (64.81%). Weight loss after oven drying showed A1 had the greatest reduction (1.33 grams), while A2 had the smallest (0.72 grams). These findings indicate that increasing pigment amounts enhances solid content, positively impacting coverage and color durability in natural screen printing ink.
ANALISIS VARIASI WAKTU DELIGNIFIKASI DAN KONSENTRASI DEKSTRIN TERHADAP PEMBUATAN KERTAS TISU SERBET DARI LIMBAH TONGKOL JAGUNG Raiqa Biyan Sukmawijaya; Vika Rizkia; Emmidia Djonaedi
INKOFAR Vol. 9 No. 2 (2025)
Publisher : Politeknik META Industri Cikarang

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Abstract

This study explores the potential of corn cobs as an alternative raw material for environmentally friendly tissue paper production. Corn cobs are rich in cellulose but contain lignin, which must be removed through a delignification process. In this research, soda delignification was applied with varied durations (30, 60, and 90 minutes), combined with the use of dextrin as a binding agent at concentrations of 5%, 10%, and 15%. The resulting tissue paper was evaluated based on Indonesian National Standards (SNI), focusing on tensile strength, water absorbency, sheet integrity, and grammage. The results showed that a delignification time of 60–90 minutes combined with 10–15% dextrin produced the best quality tissue paper. The sample treated for 60 minutes with 15% dextrin exhibited the highest tensile strength (400 N/m), while the sample treated for 90 minutes with 5% dextrin achieved the highest water absorbency (114 mm/10 minutes). These findings indicate that corn cob waste holds significant potential as a sustainable raw material for tissue paper production, supporting green manufacturing principles and agricultural waste valorization.
Pengaruh Aluminium Sulfat Terhadap Lightfastness Tinta Printer Kluwek Ramah Lingkungan Faisal Akbar Fallah; Yoga Putra Pratama; Emmidia Djonaedi
Rekayasa Hijau : Jurnal Teknologi Ramah Lingkungan Vol 9, No 3 (2025)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/jrh.v9i3.45-54

Abstract

Kesadaran masyarakat dan kebijakan pemerintah yang semakin menekankan pentingnya pelestarian lingkungan telah mendorong peningkatan permintaan terhadap produk yang lebih ekologis. Dalam konteks industri percetakan, salah satu solusi untuk mengurangi dampak limbah tinta adalah dengan menciptakan tinta berbahan dasar alami yang lebih ramah lingkungan. Penelitian ini mengeksplorasi penggunaan pigmen alami dari buah kluwek (Pangium edule) sebagai komponen utama dalam pembuatan tinta inkjet yang berkelanjutan. Fokus kajian tertuju pada pengaruh penambahan aluminium sulfat sebagai fiksator daya tahan warna tinta terhadap pemudaran akibat cahaya. Dengan menggunakan desain eksperimen satu faktor, dilakukan variasi massa aluminium sulfat antara 0,4%, 0,8%, 1,2% gram. Pengujian dilakukan dengan mengamati perubahan nilai warna berdasarkan CIE L*a*b* untuk mengevaluasi ketahanan terhadap cahaya. Hasil menunjukkan bahwa meskipun peningkatan massa aluminium sulfat menurunkan intensitas warna awal tinta, senyawa ini mampu meningkatkan stabilitas warna terhadap paparan cahaya. Temuan ini mengindikasikan bahwa formulasi tinta berbasis kluwek dengan tambahan aluminium sulfat memiliki potensi sebagai alternatif tinta inkjet ramah lingkungan.Kata kunci: tinta, kluwek, aluminium sulfat, CIE L*a*b*
Rancang Bangun Pencetak Kertas Stiker Nirkabel Berbasis ESP32 untuk Pencetakan Kode QR Yoga Putra Pratama; Rachmah Nanda kartika; Achmad Dzaki; Agam Maulana Putra; Khalda Khairunnisa Mulyana; Fatimah Nurina Adlina; Misykah Nur Fithriyah; Emmidia Djonaedi
Jurnal Penelitian Rumpun Ilmu Teknik Vol. 5 No. 3 (2026): Jurnal Penelitian Rumpun Ilmu Teknik
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/juprit.v5i3.6849

Abstract

The rapid adoption of digital transactions and contactless services has driven the demand for compact, flexible printing systems, particularly for Quick Response (QR) codes. This study designs and evaluates an ESP32-based wireless sticker paper printer tailored for real-time QR code generation and printing. Using a Research and Development (R&D) approach based on the Borg and Gall model, the prototype integrates an ESP32 microcontroller, a 58 mm Bluetooth thermal printer, an I2C 16x2 LCD display, and push-button inputs. System performance was analyzed based on software-hardware integration and Bluetooth Response Time (BRT) across varying distances. The results demonstrate that the system operates reliably within a 2 to 8-meter range, maintaining a stable response time of 95–96 ms. At 10 meters, response time increases significantly to 2,908 ms due to packet loss, while distances exceeding 10 meters lead to disconnection ("BT Failed"). This standalone system offers a responsive, cost-effective wireless printing solution for QR code labeling in micro, small, and medium enterprises.
Co-Authors Achmad Dzaki Agam Maulana Putra Chia-Fen Chi, Chia-Fen Delila Mediana Dini Handayani Dini Handayani, Dini Diyah Ayu Dwi Agnes Natalia Bangun Endang Yuniarti Endang Yuniarti Endang Yuniatri Fadhil Sukma Ramadhan Fadiyah Ayu Rahmawati Faisal Akbar Fallah Fatimah Nurina Adlina Fauzia Dianawati, Fauzia Gunawan, Muhammad Budi Hapsari, Putri Uniqa Hapsari HB Rudi Kusumantoro HB. Rudi Kusumantoro Heribertus Rudi Kusumantoro Khalda Khairunnisa Mulyana Khalyla Hafsa Khalyla Hafsa Khairunnisa Kusumantoro, HB Rudi Kusumantoro, HB. Rudi Misykah Nur Fithriyah Moch Yana Hardiman Mustofa Kamal, Dianta Nabila Putri Azzahra Nisrina Zahrah, Firyal PUTRI UNIQA HAPSARI Rachmah Nanda Kartika Rachmah Nanda Kartika Rachmah Nanda Kartika Raiqa Biyan Sukmawijaya Rudi Kusumantoro, Heribertus Salsabila, Salsabila Sukmawijaya, Raiqa Biyan T. Yuri Zagloel, T. Vika Rizkia Yoga Putra Pratama Yoga Putra Pratama Zahira Adni Shaffa, Ghaitsa