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All Journal Rekayasa Mesin E-Dimas: Jurnal Pengabdian kepada Masyarakat JST ( Jurnal Sains Terapan ) JMM (Jurnal Masyarakat Mandiri) Jurnal Teknik Indonesian Physical Review Specta Journal of Technology Makara Journal of Science Makara Journal of Technology PIKAT
Tajalla, Gusti Umindya Nur
Institut Teknologi Kalimantan
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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THE EFFECT OF CALCINATION TEMPERATURE AND HOLDING TIME ON STRUCTURAL PROPERTIES OF CALCIA POWDERS DERIVED FROM EGGSHELL WASTE Prayitno, Budi; Musyarofah, Musyarofah; Tajalla, Gusti Umindya Nur; Nafisah, Azmia Rizka; Norhidayah, Siti; Kartika, Siska Ayu
Indonesian Physical Review Vol. 8 No. 1 (2025)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v8i1.450

Abstract

This study investigates the effects of calcination temperature and holding time on the structural properties of calcia (CaO) powders. The raw material used in this study is chicken eggshell waste, which was cleaned, dried, ground, and sieved for uniform particle size. The synthesis of calcia powder was performed by calcining the powder at 900°C and 1000 °C for 5, 10, and 15 hours. XRD, BET, and SEM analyses were employed to evaluate crystal structure, textural properties, and microstructure of the calcined powders. The Rietveld analysis reveals the identified crystalline phases were calcia up to 95.6 mol% and calcium hydroxide as secondary phase. Results indicate that higher calcination temperatures and extended holding times increase particle size and reduce BET surface area, significantly altering pore size distribution. Specifically, elevated temperatures promote sintering and grain growth, leading to smaller average pore radii and decreased total pore volume. The BET surface area ranges from 7.431 m2/g to 1.772 m2/g for samples calcined at 900 °C and from 3.202 m²/g to 0.711 m²/g for samples calcined at 1000 °C. Correspondingly, the average particle radius increases from 183.51 nm to 769.55 nm at 900 °C and from 425.83 nm to 1918.10 nm at 1000 °C as the holding time extends. BJH analysis reveals that longer holding times broaden pore size distribution due to the merging of smaller pores.
Effect of Sorbitol Plasticizer on Bioplastics Properties Based on Oil Palm Empty Fruit Bunches (OPEFB) and Jackfruit Seed Starch Sasria, Nia; Afifah, Vita Nur; Nur Tajalla, Gusti Umindya
Makara Journal of Science Vol. 29, No. 2
Publisher : UI Scholars Hub

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Abstract

In bioplastics, natural materials that are easily decomposed are used to minimize plastic waste. In this research, the compositions used were cellulose from oil palm empty fruit bunches (OPEFB), jackfruit seed starch, and carboxymethyl cellulose (CMC) as a filler with sorbitol as a plasticizer. This study aimed to analyze the effect of a sorbitol plasticizer on bioplastic properties. The study began by extracting jackfruit seed starch and OPEFB cellulose. Subsequently, bioplastics were prepared by varying sorbitol, namely 0 (S – 0), 0.5 mL (S – 0.5), 1 mL (S – 1), and 1.5 ml (S – 1.5), with CMC 20%. As a result, the S – 0 variation showed the highest water resistance at 43.44%. The highest biodegradation test was in the S – 1.5 variation of 48.54% for 6 days in the soil media. The SEM test found voids in the S – 1.5 sample. Next, the best tensile strength test in the S – 0 variation was 5.44 MPa, while the S – 1.5 variation had the optimum elongation value at 13.54%. Overall, the nature of resistance to water and tensile strength were directly proportional. However, these two samples were inversely proportional to biodegradation and elongation. Meanwhile, the characteristics of biodegradation and elongation were directly compared.
STUDY OF UTILIZING PINEAPPLE LEAF EXTRACT FOR THE GREEN SYNTHESIS OF FE3O4 AND ITS IMPREGNATION ON OIL PALM (EFB) Parmita, Ade Yusariarta Putra; Dewanto, Hizkia Alpha; Tajalla, Gusti Umindya Nur; Akbar , Aulia Arif; Tajalla, Nur
Jurnal Rekayasa Mesin Vol. 16 No. 1 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v16i1.1982

Abstract

The formation process of Fe3O4/EFB fiber was carried out by synthesizing FeCl3.6H2O and pineapple leaf extract using the green synthesis method. Pineapple leaf extract contains hydroxyl, carbonyl, and amine functional groups that can act as reductants and capping agents for the synthesized metal salts. Then, the in-situ impregnation was carried out to attach magnetite to the EFB fibers. The EFB fibers were then soaked in a mixture of precursor solution and pineapple leaf extract with a variation of liquor-to-good ratios of 1:40, 1:60, and 1:80 to determine the optimal ratio in forming Fe3O4/EFB fiber. In XRD testing, the three variations of samples have peak characteristics of magnetite (Fe3O4). SEM-EDX results also showed the Fe content from three samples tested. In the UV-Vis examination, the 1:80 sample has the highest percent degradation with 68.09%, and the lowest percent degradation belongs to untreated EFB with 12.44%. Visual tests showed that the 1:40, 1:60, and 1:80 variations could degrade methylene blue after 12 hours with addition of H2O2. H2O2 increases the reactivity of Fe3O4 by providing hydroxyl radicals that can attack pollutants and mineralize methylene blue into CO2 and H2O.
Transformasi Limbah Sabut Kelapa Menjadi Cocopeat: Solusi Ekonomi Kreatif bagi Warga Pantai Lamaru Balikpapan Tajalla, Gusti Umindya Nur; Lubis, Muthia Putri Darsini; Amalia, Lia; Laksono, Andromeda Dwi; Sulaksono, Rachmad Prabowo; Dharmayanti, Amilita Medisa Rizky; Akbar, Aulia Arif; Anggeswari, Inggrid Dya; Destiny, Keysi Devain; Sofwan, Muhammad; Budiarti, Dini Tri; Anggraini, Elistria; Paramita, Fika
E-Dimas: Jurnal Pengabdian kepada Masyarakat Vol 16, No 2 (2025): E-DIMAS
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/e-dimas.v16i2.20390

Abstract

Pandemi COVID-19 telah memberikan dampak signifikan terhadap sektor pariwisata, termasuk masyarakat pesisir Lamaru yang menggantungkan hidupnya pada aktivitas wisata. Sebagai upaya pemulihan ekonomi dan pemberdayaan masyarakat, kegiatan ini berfokus pada pemanfaatan potensi lokal, yakni sabut kelapa, menjadi produk yang memiliki nilai tambah. Melalui kegiatan pengabdian masyarakat, penulis melakukan sosialisasi dan pelatihan kepada masyarakat RT 19 Kelurahan Lamaru Kota Balikpapan mengenai pembuatan cocopeat dari limbah sabut kelapa. Tujuannya adalah untuk meningkatkan keterampilan masyarakat, menciptakan peluang usaha baru, serta mengurangi limbah organik. Kegiatan ini dilatarbelakangi oleh meningkatnya minat masyarakat terhadap berkebun di masa pandemi. Hasil yang diharapkan dari kegiatan ini adalah meningkatnya kemampuan masyarakat dalam memproduksi cocopeat berkualitas, serta terbentuknya kelompok usaha kecil menengah yang mampu memasarkan produknya. Selain itu, kegiatan ini juga diharapkan dapat meningkatkan kesadaran masyarakat akan pentingnya pengelolaan limbah organik dan pemanfaatan sumber daya lokal. Berdasarkan rekapitulasi hasil kuesioner pemahaman materi dan kuesioner kepuasan, didapatkan data bahwa tingkat pemahaman peserta di atas 70% dimana sebagian besar antusias pada materi yang disampaikan.
Effect of Contact Time and Concentration on Adsorption of Pb2+Metal Ion Utilizing Crab Shell Chitosan and Activated Bentonite Clay Composite Sasria, Nia; Wisaka, Adi; Yusariarta Putra Parmita, Ade Wahyu; Nur Tajalla, Gusti Umindya
Makara Journal of Technology Vol. 29, No. 2
Publisher : UI Scholars Hub

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Abstract

Indonesia produced 1,508 tons of nonliving crabs in the January–March 2020 period. The number of shells generated can account for 40%–60% of the overall weight. Therefore, using crab shells made into chitosan is expected to increase the economic value and reduce waste from crab shells. Chitosan can be modified with clay previously activated with an acid solution to form a chitosan–clay composite to improve the adsorption capacity. This study aims to analyze the differences in characteristics between chitosan and clay before and after the immobilization process. A comparison of chitosan and clay (1:2) is conducted on the basis of variations in the contact time for 5, 30, 55, and 80 min and in the concentration of metal solution as much as 10, 30, and 50 ppm. The results of the Fourier transform infrared spectroscopy (FTIR) study found stretching vibrations of –NH originating from the chitosan structure, as well as several functional groups from clay, such as silanol (Si–OH) and siloxane (Si–O–Si). The results of the X-ray diffraction (XRD) test show that the clay used was bentonite clay. Meanwhile, the scanning electron microscopy (SEM) and surface area analyzer (SAA) test results show that the chitosan–clay adsorbent has a rougher and hollower surface with a surface area of 23,666 m2/g. The best adsorption percentage of 90.59% occurred at a concentration of 10 ppm with a contact time of 30 min.
PERANCANGAN DAN PEMBANGUNAN SISTEM IRIGASI SEMI-OTOMATIS UNTUK PERKEBUNAN BERKELANJUTAN DI KELOMPOK TANI PEDULI API Gusti Umindya Nur Tajalla; Riza Hudayarizka; Ismi Khairunnissa Ariani; Yosua Anjupaian Situmeang; Bimo Surya Lesmana; Yurischa Deify Utami; Muhammad Yazid Abyan Rahim
JMM (Jurnal Masyarakat Mandiri) Vol 9, No 1 (2025): Februari
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v9i1.28825

Abstract

Abstrak: Kelompok Tani Peduli Api (KTPA) adalah kelompok tani yang berlokasi di Balikpapan Utara dengan jumlah anggota terdiri dari 10 kepala keluarga. KTPA berfokus pada budidaya sayur-sayuran seperti bayam, tomat, cabai, dan kangkung. Dalam menjalani kegiatan perkebunan, KTPA masih memanfaatkan air sungai yang cukup jauh dari lahan perkebunan, sistem penyiraman manual, penggunaan pompa bahan bakar fosil, dan menggunakan pupuk kimia yang tidak tersubsidi oleh pemerintah. Permasalahan tersebut dapat diatasi menggunakan teknologi tepat guna berupa sistem irigasi semi-otomatis yang terdiri dari teknologi Rainwater Harvesting (RWH) yang terintegrasi dengan filter air, pompa PLTS, dan irigasi sprinkle, serta pembuatan pupuk organik cair (POC). Teknologi tepat guna yang hadir bisa meningkat efisiansi proses penyiraman sebesar 40%. Kegiatan sosialisasi yang diikuti oleh 28 warga setempat menunjukkan tren peningkatan hasil post-test dibandingkan pre-test dengan tingkat pemahaman meningkat sebesar 13,46% setelah post-test. Hal tersebut menunjukkan bahwa sosialisasi berhasil meningkatkan pemahaman dan pengetahuan peserta mengenai materi yang disampaikan.Abstract: The Kelompok Tani Peduli Api (KTPA) in North Balikpapan comprises 10 houses engaged in the cultivation of vegetables, including spinach, tomatoes, chili peppers, and water spinach. They depend on remote river water, laborious irrigation, fossil fuel-operated pumps, and unsubsidized chemical fertilizers, presenting obstacles to efficiency and sustainability. A semi-automated irrigation system was implemented to resolve these challenges, incorporating Rainwater Harvesting (RWH), a filtration system, solar-powered pumps, spray watering, and the manufacture of liquid organic fertilizer (POC). This system could enhance irrigation efficiency by 40%. A community outreach initiative with 28 participants demonstrated a 13.46% enhancement in comprehension from pre-test to post-test, signifying increased knowledge and awareness. These findings illustrate the efficacy of implementing suitable technology in empowering farmers and advancing sustainable farming practices.
Co-Authors Achmad Maulana Ade Wahyu Yusariarta Putra Parmita Ade Wahyu Yusariarta Putra Parmita Afifah, Vita Nur Ainun Zulfikar Akbar , Aulia Arif Akbar, Aulia Arif Andriansyah, Prisky Anggeswari, Inggrid Dya Anggraini, Elistria Ariani, Ismi Khairunnissa Bimo Surya Lesmana Budi Prayitno Budiarti, Dini Tri Darma, Daffa Irsyad Destiny, Keysi Devain Dewanto, Hizkia Alpha Dharmayanti, Amilita Medisa Rizky Fitriana Maharani Fatchur Rochim Hizkia Alpha Dewanto Hizkia Alpha Dewanto Idhil Ismail, Andi Indrawati, Dini Jatmoko Awali Kartika, Siska Ayu Laksono, Andromeda Dwi Leoriza, Meutya Dwi LIA AMALIA Mahera, Adinda Kholif Mohd, Yusairie Muhammad Nurhidayatur Rozikin Muhammad Rifani, Muhammad Muhammad Sofwan Muhammad Yazid Abyan Rahim Muhammad Zaini Abdi Musyarofah Musyarofah, Musyarofah Muthia Putri Darsini Lubis Nabilla Amalia Putri Nafisah, Azmia Rizka Ni Putu Sriniti Novi Kartika Putri Norhidayah, Siti Oliever Andrea Parusha Paramita, Fika Parmita, Ade Yusariarta Putra Pratama, Winardi Dian Wahyu Putra, Ade Wahyu Yusariarta Rifqi Aulia Tanjung Riyadi, Ilham Tri Riza Hudayarizka Sabrina Humaira Sasria, Nia Sulaksono, Rachmad Prabowo Tajalla, Nur Vadila, Mei Lisa Nur Wisaka, Adi Yanti, Lisda Yosua Anjupaian Situmeang Yunita Triana, Yunita Yurischa Deify Utami Yusariarta Putra Parmita, Ade Wahyu