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MODIFIKASI TEKNIK ISOLASI BIOPOLIMER KITOSAN DARI CANGKANG KERANG MUTIARA (PINCTADA MAXIMA) SEBAGAI ADSORBEN ZAT WARNA METILEN BLUE Nurlaili Nurlaili; Siti Alaa; Susi Rahayu
ORBITA: Jurnal Kajian, Inovasi dan Aplikasi Pendidikan Fisika Vol 8, No 2 (2022): November
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (268.884 KB) | DOI: 10.31764/orbita.v8i2.11462

Abstract

ABSTRAKBiopolimer kitosan memiliki banyak aplikasi diantaranya sebagai  biosorben, scaffold, bahan pengawet ikan, dan anti mikroba pada makanan. Dalam beberapa penelitian, kitosan sangat efektif dalam mengadsorpsi ion zat warna Metilen biru. Adapun tujuan dari penelitian ini untuk identifikasi karakteristik kitosan hasil isolasi dari cangkang kerang Mutiara. Proses isolasi biopolimer kitosan menggunakan metode deasetilasi bertahap. Dimana proses isolasi dilakukan dengan tiga proses yaitu deproteinasi, demineralisasi, dan deasetilasi. Serbuk hasil isolasi diidentifikasi rendemennya, diukur densitasnya, analisis gugus fungsi yang terbentuk dengan FTIR, dan menghitung kemampuan dalam mengadsorbsi zat warna metilen blue dengan Uv-Vis. Hasil penelitian menunjukkan bahwa kitosan yang dihasilkan berbentuk serbuk berwarna putih keabuan, rendemen 33,71%, densitas curah kitosan sebesar 1,21 gr/, serta didapat derajat deasetilasi dari kitosan sebesar 57,50 %. Efisiensi penyerapan zat warna Metilen biru oleh kitosan di setiap konsentrasi rata-rata bernilai 90 %. Oleh karena itu, biopolimer kitosansangat efektif dalam mengadsorbsi zat warna metilen blue. Kata kunci: deasetilasi bertahap; efisiensi penyerapan; karakteristik kitosan. ABSTRACTChitosan biopolymer has many applications including as a biosorbent, scaffold, fish preservative, and antimicrobial in food. In several studies, chitosan was very effective in adsorption of methylene blue dye ions. The purpose of this study was to identify the characteristics of chitosan isolated from pearl shells. The process of isolation of chitosan biopolymer uses the stepwise deacetylation method. Where the isolation process is carried out by three processes, namely deproteination, demineralization, and deacetylation. The isolated powder was identified its yield, measured its density, analyzed the functional groups formed by FTIR, and calculated the ability to adsorb methylene blue dye with UV-Vis. The results show that the chitosan is a grayish-white powder, the yield is 33.71%, the bulk density of chitosan is 1.21 gr/cm3, and the degree of deacetylation of chitosan is 57.50%. The absorption efficiency of methylene blue dye by chitosan at each concentration averaged 90%. Therefore, chitosan biopolymer is very effective in adsorbing methylene blue dye. Keywords: gradual deacetylation; absorption efficiency; chitosan characteristics.
DISEMINASI PENERAPAN TEKNOLOGI AUDIO ON DEMAND MELALUI PODCAST SEBAGAI MEDIA INFORMASI DI ERA INDUSTRI 4.0 Halil Akhyar; Deasy Mariyani; Susi Rahayu; Muhamad Ali
Jurnal Abdi Insani Vol 9 No 3 (2022): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v9i3.633

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Information technology is a technology utilized to create, modify, communicate or disseminate up-to-date information through an advanced media. Podcast is the current channel to spread out an informative and educational information. The popularity of podcasts as a public medium to deliver information increases significantly in the recent year. This is supported by the condition of the Covid-19 pandemic. The podcast is continuously applicated in all areas, such as entertainments, governments and educational circumstances. The two-way communication has become an interactive broadcasting system not only for the young people but also for the elderly people. So that the presence of podcasts continues to be positively welcomed by the community. The event aims to form a podcast as a media for promotion and dissemination of information related to research and service innovations produced by lecturers at the University of Mataram. It is carried out in some stages, including surveying the situation and field conditions, implementating, and evaluating. In terms of the implementation phase, it is divided into three main activities, such as socializing, training, and mentoring. To facilitate these activities, several approaches were applied, like participatory rural appraisal (PRA), persuasive approaches, and educational approaches. The results of the survey conducted by the health promotion team from the health department of West Nusa Tenggara Province showed that LPPM required several equipment, such as cameras/webcams, microphones, earphones, a mixer, tripods, lightings, an OBS software, an Adobe Premier Pro, and a personal computer. In addition, from the results of observations, it is concluded that the Research and Service Institute (LPPM) of the Mataram University has a suitable room to hold the podcast. Overall, the implementation of podcast at the LPPM has been successfully implemented. The evaluation as one of the most important part shows that there are technical and non-technical obstacles occurred, such as none-standardized computer equipment and room arrangements. This is an important note for the next implementation. However, in general, the podcast as an informative, educative, and accurate information and promotion media has been successfully established at the LPPM of Mataram University.
Eksplorasi Limbah Tulang Sapi Sebagai Sumber Biomaterial Hidroksiapatit Alimuddin Alimuddin; Susi Rahayu
Kappa Journal Vol 6 No 2 (2022): Desember
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v6i2.6885

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The abundance of cow bone waste in West Nusa Tenggara has not been in line with proper treatment. Cow bones contain a lot of apatites that can be modified into raw materials for the fabrication of hydroxyapatite. The need for hydroxyapatite as bone graft biomaterials increase in Indonesia continuously. The study aims to identify the appropriate preparation method for extracting hydroxyapatite from cow bone. Mechanical and thermal techniques are used to extract the cow bone. The method utilizes heat energy and mechanical energy to achieve hydroxyapatite. The extracted powder from cow bone was identified the ratio of Ca/P using EDX, calculated the yield of the fabricated product, measured its bulk density, and placed its functional group by FTIR. The results reveal that the best preparation method to acquire hydroxyapatite is by extracting the compact bone of bovine. The compact bone is macerated with alcohol for 12 hours and calcined at a temperature of 9500C for three hours. The apatite has a Ca/P ratio of 2.25, yielding 66.53%, and a bulk density of 1.18 g/cm3. Typical hydroxyapatite groups that emerge from apatite powder are the presence of functional groups OH, PO43-, and CO32-. This preparation method also has powders with unidentified C-H functional groups. The fact of this variety indicates the powder does not contain organic elements that can be at risk of rejection by the human body. Therefore, the apatite extracted from cow bone can be used as a safe biomaterial for the human body.
DISEMINASI TEKNIK PEMBUATAN PUPUK ORGANIK DARI LIMBAH PERTANIAN DAN PETERNAKAN DI DESA MENCEH, KAB. LOMBOK TIMUR Liza Umitasari; Susi Rahayu; Afiatul Hafifah; Ahmad Risandi F.; Alda Berlian; Anggie Dwi P.; Arzyl Akbar; Enggar Juwanda K.; Huan Ahmad T.; Legi Aprila; Mammi Dwi R.
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 7, No 1 (2023): March
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v7i1.13787

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ABSTRAKPenduduk desa Menceh mayoritas bermata pencaharian sebagai petani. Saat ini ketersediaan pupuk pertanian cukup langka. Kelangkaan ini berdampak pada mahal nya harga pupuk kimia. Oleh karena itu, perlu dilakukan suatu inovasi penggantian pupuk kimia dengan pupuk organik. Sehingga perlu dilakukan suatu kegiatan untuk menambah wawasan masyarakat terkait manfaat dari pupuk organic. Adapun tujuan lain pelaksanaan kegiatan ini yakni untuk meningkatkan keterampilan masyarakat dalam pembuatan pupuk organic. Untuk mencapai tujuan tersebut maka kegiatan dilakukan dalam tiga tahapan utama. Tahap pertama melalui kegiatan sosialisasi peranan penting penggunaan pupuk organic terhadap kesuburan tanah. Tahap kedua dengan kegiatan pelatihan pembuatan pupuk organic. Dan tahapan terakhir yakni pendampingan secara berkala pembuatan pupuk, pengaplikasian pupuk, dan pengemasan pupuk. Adapun dalam pelaksanaan kegiatan digunakan beberapa metode pendekatan yaitu Model Participatory Rural Appraisal (MPRA), Model Community Development (MCD) dan edukatif. Melalui serangkaian tahapan dan metode pendekatan tersebut, hasil evaluasi menunjukkan bahwa masyarakat telah mamapu secara mandiri membuat, menggunakan, dan mengemas pupuk sesuai dengan arahan tim KKN. Dengan kemandirian tersebut diharapkan dapat mengurangi ketergantungan masyarakat terhadap penggunaan pupuk kimia. Kata kunci: sekam padi; kohe kambing; pelatihan ABSTRACTThe majority of Menceh villagers work as farmers. Currently, the availability of agricultural fertilizers is quite scarce. This scarcity has a direct impact on the high price of chemical fertilizers. Therefore, innovation is necessary to replace chemical fertilizers with organic fertilizers. Consequently, it is essential to elevate public knowledge regarding the benefits of natural fertilizer. In addition, the community needs to train on how to make organic fertilizer. Three main stages are conducted to achieve this goal. Firstly, the critical role of using organic fertilizers on soil fertility is introduced to the farmers. Also, peasants are taught how to create non-chemical fertilizers appropriately. Ultimately, the land workers are supervised regularly in making fertilizer, applying fertilizer, and packaging fertilizer. Several approaches are leveraged in the implementation processes: the Participatory Rural Appraisal Model (MPRA), the Community Development Model (MCD), and the educative. Through a series of stages and the approach method, the evaluation results reveal that the local community is able to fabricate, utilize, and wrap fertilizer independently according to the KKN team's directions. This independence is hoped to reduce the community's dependence on chemical fertilizers. Keywords: rice husks; goat kohe; training
Inisiasi Kemandirian Siswa MTs Nurul Islam Sekarbela Melalui Praktikum Kelistrikan dan Kemagnetan Untuk Mendukung Program Merdeka Belajar Dian W. Kurniawidi; Rohani Sayuti; Muh. Alfaris; Agus Wahid H; Susi Rahayu
Jurnal Pengabdian Magister Pendidikan IPA Vol 6 No 2 (2023): April-Juni
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v6i2.4462

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The learning process requires media to attract students' attention and curiosity about the lesson. The era of digitalization of technology and information has caused students to start leaving books behind, creating an egocentric attitude focused on themselves. Experiment activities in the laboratory are indicated to be able to initiate collaboration and communication skills, in addition to fostering student independence in learning. This program aims to improve students' competency in literacy and numeracy so that they are better prepared and more relevant to the times. The activity lasts for 3 days, the first and second days are for experiments, while the third day is discussion and evaluation. Experiment materials are electricity and magnetism as much as 5 topics. Based on the completed questionnaire, students understood the Seeback Effect and Magnetic Field Identification up to 96%, while the most difficult topics to understand was Generators and Transformers with an understanding percentage of 76% and Parallel Series Circuits by 88%.
Workshop Analisis Kristalografi Dengan Metode Rietveld Menggunakan Aplikasi X’Pert Highscore Ramadian Ridho Illahi; Arif Budianto; Zahrah Ramadlan Mubarokah; Dian W. Kurniawidi; Siti Alaa; Teguh Ardianto; Susi Rahayu
Jurnal Pengabdian Magister Pendidikan IPA Vol 6 No 2 (2023): April-Juni
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v6i2.4463

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Final year students are required to have the ability to innovate, be creative, have personality, and develop independence in seeking and finding knowledge through realities and field dynamics such as ability requirements, real problems, social interaction, collaboration, self-management, as well as performance demands and achievement targets. In order for students' hard skills and soft skills to be formed strongly, it is felt necessary to provide additional skills, especially those that support the completion of the Final Project. Workshops on the use of the Originlab are quite urgent in research so as to speed up the completion of the Final Project (Thesis) for students interested in Materials. This software is commonly used to prepare XRD, FT-IR, UV-Vis and other spectra that are quite important in materials. In this explanation, a brief description of the XRD data preparation steps is described, starting from data input to quantitative and qualitative data analysis. Data analysis was carried out including determining the value of particle size, FWHM, crystal structure and lattice strain. Workshop participants totaled 20 students and were held for 7 days, from 7 to 15 May 2023 with details of 2 days offline, 1 day online via G-Meet and 4 days of mentoring.
PENGEMBANGAN SISTEM PENGUKURAN EMISI UDARA JENIS FINE PARTICLE SKALA PORTABLE UNTUK LABORATORIUM Arif Budianto; Susi Rahayu; Ramadian Ridho Illahi; Lalu Sahrul Hudha; Intan Utami
Jukung (Jurnal Teknik Lingkungan) Vol 9, No 2 (2023)
Publisher : Program Studi Teknik Lingkungan Fakultas Teknik Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jukung.v9i2.17574

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Emisi udara jenis fine particle tergolong partikel submikron yang berukuran sangat kecil dan sangat mudah untuk terhirup. Sistem pengukuran ataupun mitigasi emisi ini tergolong relatif mahal dan kurang portable. Oleh sebab itu, penelitian ini bertujuan untuk mengembangkan sebuah sistem portable yang relatif murah untuk pengukuran emisi udara jenis fine particle dalam ruang laboratorium. Sistem dirancang dengan sebuah sensor partikulat yang relatif murah namun memiliki performa yang baik. Sensor tersebut dihubungkan dengan sebuah mikrokontroler yang berfungsi memproses sinyal sensor. Sistem diuji di dalam area soldering laboratorium selama satu jam. Hasil penelitian menunjukkan bahwa ruang laboratorium, pada area soldering, memiliki konsentrasi fine particle antara 23 sampai dengan 463 µg/m3. Sistem ini memiliki performa yang baik, ditunjukkan dengan linearitas 99% dan akurasi lebih dari 90%. Hasil penelitian menyimpulkan bahwa sistem dapat mendeteksi sekaligus mengukur besar konsentrasi emisi udara jenis fine particle skala ruangan dengan rentang 0 – 999 µg/m3. Kata kunci: emisi, partikulat, polusi udara, sistem pengukuran
Characteristics of Dyeing Cotton Thread Using Fine Particle Powder from Tectona Grandis Leaf Dian W. Kurniawidi; Diah L. Dewi; Susi Rahayu; Arif Budianto; Siti Alaa
Jurnal Penelitian Pendidikan IPA Vol 9 No 10 (2023): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i10.3753

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In Lombok, the traditional process of dyeing woven fabrics primarily involves the use of synthetic dyes, which can contribute to environmental pollution. This study aimed to identify the characteristics of woven yarn and assess the effect of dye solution pH on yarn properties when using teak leaves (Tectona grandis) to produce dye powder through a mechanical thermal method. The thread coloring process comprised mordanting, coloring, and fixation stages, with the assistance of Android applications for color analysis and a Universal Tensile Machine Type RTG-1310 to assess mechanical properties. The results revealed that dyeing yarn with anthocyanin powder from teak leaves yielded a range of colors, including shades of gray, brown, and red. The highest tensile strength observed was 2,664 cN/dtex, and the solution's pH significantly influenced the dominant color, with red being prominent. Notably, optimal tensile strength (1,649 cN/dtex) was achieved at pH six. These findings highlight the potential for producing high-quality cotton threads using different dyeing processes and techniques. The study's insights contribute to both environmental protection and thread quality enhancement in the textile industry
Pengolahan Limbah Cangkang Kerang Mutiara (Pinctada Maxima) Sebagai Adsorben Logam Berat Fe Susi Rahayu; Siti Alaa; Dewi Handayani; Dian W Kurniawidi
JURNAL PERTAMBANGAN DAN LINGKUNGAN Vol 3, No 2 (2022): Desember 2022
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpl.v3i2.11464

Abstract

Fe is a type of heavy metal that can cause damage to the environment and health. If the concentrations of Fe are more than 1 mg/L, it can lead to toxic effects to the human body. The level of Fe contamination in the environment needs to be controlled to diminish hazardous effects. This can be conducted by modifying a smart material to adsorb the Fe metal. The material modification was carried out by isolating pearl oyster shells (Pinctada maxima) into chitosan as Fe metal adsorbent. The main aim of this research is to identify the ability of chitosan to soak Fe up. To obtain chitosan material, the pearl shells were isolated through 3 stages, namely deproteination, demineralization, and deacetylation. The isolated chitosan powder was identified the typical group forming chitosan using FTIR and the yield of each isolation process was calculated. Meanwhile, the ability of chitosan to adsorb Fe metal was identified through testing using AAS. The results of the calculation of the yield of the chitosan isolation process showed a decrease in mass at each stage. Until the final stage, the powder yield decreases to 32.17% from the initial mass used. In addition, the FTIR results also figure out that chitosan was successfully synthesized in the presence of the OH functional group at a wave number of 3434.660 cm-1 and the NH2 functional group at a wave number of 1626.110 cm-1 with a degree of chitosan deacetylation of 80.534%. It is clear from the results of AAS where the highest adsorption capacity is 33,262 mg/g with an adsorption efficiency of 99,788%. Therefore, the pearl shells have been successfully adjusted into chitosan. Where chitosan is one of the excellent biomaterials to absorb the heavy metal.
Lombok Pumice for Adsorption of Fe2+ Metal Ions Using Activation Temperature Variations Sinta Devi Hariyanti; Susi Rahayu; Siti Alaa’; Dian Wijaya Kurniawidi
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i3.5306

Abstract

Fe is a heavy metal that is often found in water. If the level exceeds the maximum limit and is continuously consumed, it will cause various kinds of diseases so that a method is needed that can reduce the level of heavy metal Fe2+. In this study, Fe2+ metal ion adsorption was carried out using pumice which aims to determine the characteristics of pumice which include surface area, density and porosity, adsorption ability, and determine the contact time required to absorb Fe2+ metal ions. The adsorption method used is the batch method, with activation treatment for each adsorbent. Activation is done by heating at a temperature variation of 250o, 400o, and 550oC. The results showed that the highest adsorption capacity of pumice was activated pumice powder at a temperature of 550oC with a characteristic surface area of ​​8.196 m2/g, porosity 12.722% and density 2.374 gr/cm3 and the best contact time was at 60 minutes with absorption efficiency 86.4%
Co-Authors ABDUL GANI abdurrouf Abdurrouf Afiatul Hafifah Agista, Wida Puteri Agus Saputra Agus Wahid H Ahmad Risandi F. Ahmad Taufik Ahmad Taufik S Ahmad Taufik S Akhyar, Halil Alaa, Siti Alaa, Siti Alawiyah, Geby Alaydrus, Alfina T. Alaydrus, M. Mukaddam Alaydrus, Mukaddam Alda Berlian Alfina Alaydrus Alfina Taurida Alaydrus Alhaqiqi, Candra Alimuddin Alimuddin Amirrah, Reffa Amrul Ikhsan Amrulloh, Ashfia Anggie Dwi P. Anggriani, Ni Ketut Ansyori, Maz Isa Arif Budianto Arif Budianto Arif Budianto Arum, Maysaroh Arzyl Akbar Baiq Niswatul Khair Baiq R. S. Yusuf Bakti Sukrisna Cahyawati, Triyana Dyah Deasy Mariyani Desti Olga Safitri Destrianingtyas, Aulia Safitri Dewi Handayani Dewi, Diah L. Diah L. Dewi Diah L. Dewi Dian W Kurniawidi Dian W Kurniawidi Dian W. Kurniawidi Dian W. Kurniawidi Dian W. Kurniawidi Dian Wijaya Kurniawidi Dian Wijaya Kurniawidi Dian Wijaya Kurniawidi Djoko H Santjojo Djoko H. Santjojo Dodi Mariadi Dona, Dona Dwiyansaputra, Ramaditia Eka Rahmawati Eka Rahmawati Enggar Juwanda K. Ervina Sandra Dewi Eva Nurhaliza Eva Nurhaliza Fadila, Naila Fadli Robiandi Fajriah, Baiq Nurul Fidya, Karina Alma Fitri Bimantoro Geby Alawiyah Habib Ridwansyah Hadi, Kasnawi Al Halil Akhyar Halil Akhyar Hamidi, Mohammad Zaenuddin Handayana, I Gusti Ngurah Yudi Handayana, I Gusti Ngurah Yudi Hasanah, Khofizzatul Hendri Maradona, Hendri Hiden - Hiden Huan Ahmad T. Hurnah Hurnah, Hurnah Huwaida, Maitsa I G N Yudi Handayana I Wayan Sudiarta Inatsa, Najma Intan Utami Intan Utami Isa A.A, Maz Iwan Sumarlan Jannah, Sahlli Jazuly, Zaky Juniarti, Rosita Kasnawi Al Hadi Kholik Hidayatullah Khusnul Khotimah Kiki Yasdomi Kormil Saputra Kurniawidi, Dian W Kurniawidi, Dian W. Kurniawidi, Dian Wijaya Laeli, Ida Laili Mardiana Lalu A Didik Lalu A Didik Lalu A. Didik Lalu Sahrul Hudha Legi Aprila Lestari, Sintya Dewi Lily Maysari Angraini Liza Umitasari Mammi Dwi R. Marlina, Resti Marzuki Marzuki Marzuki Marzuki Masruroh Masruroh Maulana, Sutan Fajri Meilani, Dini Moh. Bahtiar Muh. Alfaris Muhamad Ali Muhamad Ali Muhamad Ali Muhamad Amin Muhamad Amin Muhammad Fajrin Muhammad Maulana Nadila Rahmawati Nafsiatil Afro', Maulina Nurfadilah Nurhidayati Nurhidayati Nurlaili Nurlaili NURUL QOMARIYAH Oktri P, Awanda Pertiwi, Shavira Purnaning, Dyah Putraji, L.M. Guguh Putri Arifatul Fajriyah Ramadian Ridho Illahi Reza Alfian Rohani Sayuti Rosita Juniarti RR. Delima S. Rubi'ah, Siti Sabrina, Sovia sasabila sasabila Septiani, Nonik Setyawan P Sakti Setyawan P. Sakti Sinta Devi Hariyanti Siti Alaa Siti Alaa Siti Alaa' Siti Alaa` Siti Alaa’ Siti Ema Nurmaulida Sri Mulyani Suhayat Minardi Suhayat Minardi Sunita, Asfa Syamsuddin Syamsuddin Syamsuddin Syamsuddin Syamsuddin Teguh Ardianto, Teguh Thathit Suprayogi Utami, Urfi Wahana, Lidia Wahyudi, Sopian Ari Wijaya Kurniawidi, Dian Wirawan, Rahadi Wirawan, Rahadi Zahrah Ramadlan Mubarokah