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All Journal Alchemy : Journal of Chemistry Indonesian Green Technology Journal The Journal of Pure and Applied Chemistry Research EduChemia: Jurnal Kimia dan Pendidikan Indonesian Journal of Science and Education Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan INTENSIF: Jurnal Ilmiah Penelitian dan Penerapan Teknologi Sistem Informasi Jurnal Penelitian Pendidikan IPA (JPPIPA) PROCEEDING ICTESS (Internasional Conference on Technology, Education and Social Sciences) International Journal of Community Service Learning JPPM (Jurnal Pengabdian dan Pemberdayaan Masyarakat) Bubungan Tinggi: Jurnal Pengabdian Masyarakat Indonesian Journal for Social Responsibility Tri Dharma Mandiri: Diseminasi dan Hilirisasi Riset Kepada Masyarakat (Jurnal Pengabdian Kepada Masyarakat) Molekul: Jurnal Ilmiah Kimia
Layta Dinira
Universitas Brawijaya
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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Lecturer Internship Program in Industry to Provide Real Work Experience for University Students Deasy Chrisnia Natalia, Layta Dinira dan
PROCEEDING ICTESS (Internasional Conference on Technology, Education and Social Sciences) 2018: PROCEEDING ICTESS
Publisher : PROCEEDING ICTESS (Internasional Conference on Technology, Education and Social Sciences)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (279.914 KB)

Abstract

Indonesia higher education learning system is currently less responsive to the industrial jobdynamics. As a result, there is a mismatch between graduates’ skill with the competenciesrequired by industry. Higher education has prepared nearly one million students to becometeachers, but the government has no plans to increase the number of public servant teachers.This policy makes most of graduates are unemployed. Companies in non-education andmanufacturing services have started complaining about the difficulty of finding workerslike engineers to fill in skilled positions. The rapid changing of industrial job dynamicsmake learning in higher education institution should move as rapidly as possible with theindustry. Therefore, it is necessary to develop collaboration between higher educationinstitution and industry. This paper proposed an innovation to learn and develop knowledgefrom industry through lecturer internship program. After attending internship program inthe industry, lecturers are expected to provide more real working experience to the students.The lecturer internship program in the industry will be focused on product research anddevelopment collaboration. In this paper will be presented a theoretical study about: (1)thebenefits; (2)factors that can affect; or (3)hinder the success of lecturer internship program inthe industry.Keywords: [lecturer, internship, program, industry, university
Vaksin Strategy as Enjoyment Chemical Approach for Senior High School Students Layta Dinira
Indonesian Journal of Science and Education (IJOSE) Vol 2, No 2 (2018): Indonesian Journal of Science and Education
Publisher : Fakultas Keguruan dan Ilmu Pendidikan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (537.627 KB) | DOI: 10.31002/ijose.v2i2.622

Abstract

Desire to apply knowledge gained in school is the characteristic of high school students. These characteristic actually has been accommodated into 2013 curriculum. However, low interest of high school students to study chemistry was still found. Various learning methods have been developed to improve learning interest in the classroom. The effort to increase students' interest in chemistry can also be done outside the classroom. In this paper will be presented a theoretical study of joyful learning real world chemistry through VAKSIN strategy during school break. The strategy will be given in two ways, through science camps or excursion. Materials to be provided during the science camp are making green chemistry paint, exploration of cat litters, and simulations of waste water purification. Excursion can go into two places, the industry or university. VAKSIN strategy will have positive impact on students, teachers, industries, and universities. Keywords: high school students, joyful learning, real world chemistry, VAKSIN strategy
The Performance of Activated Carbon from Used Coffee Grounds Combined with Iron(III) Oxide under UV Light and Ultrasound for Phenol Degradation Layta Dinira; Barlah Rumhayati; Adam Wiryawan
The Journal of Pure and Applied Chemistry Research Vol 10, No 2 (2021): Edition May-August 2021
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2021.010.02.575

Abstract

Coffee consumption over the past four years has continued to increase the amount of used coffee grounds. Usually, the used coffee grounds are simply thrown away. In fact, it can still be used as other materials that are more efficient and environmentally friendly, such as activated carbon. Activated carbon can be utilized as an adsorbent to adsorb compounds that are carcinogenic and potentially last a long time in the environment, such as phenols. Phenol decomposition through chemical can be carried out by Advanced Oxidation Process (AOP) which utilize hydroxyl radicals. This method used a catalyst such as iron(III) oxide under ultraviolet light. Phenol decomposition can also be carried out using ultrasound. This study presents the performance of the combination of activated carbon-catalyst with ultrasound in phenol decomposition. The results showed that the mass of the composite influenced the 0.1 M phenol degradation by the activated carbon–iron(III) oxide assisted with ultraviolet light, ultrasound, and 0.01 M hydrogen peroxide. for 45 minutes. The best degradation of phenol was obtained when 0.5 g adsorbent was applied with the adsorption capacity of phenol was 704.37 mg/g. The concentration of hydrogen peroxide also affects the decomposition of phenol in solution. From the variation of the hydrogen peroxide solution used (0.01; 0.02; and 0.03 M), the optimal concentration in degrading phenol was 0.01 M with the adsorption capacity of phenol was 393.70 mg/g.
The Influence of Conditioning Agent on Phosphate Diffusion Coefficient through Polyacrylamide and Agarose Gel Layta Dinira; Barlah Rumhayati; Rachmat Triandi Tjahjanto
The Journal of Pure and Applied Chemistry Research Vol 2, No 2 (2013)
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (224.522 KB) | DOI: 10.21776/ub.jpacr.2013.002.02.155

Abstract

Excess phosphate in natural water can cause algae grow rapidly, to the extent causing many fish deaths that led to the extinction of certain species. Therefore, an analysis or periodic observations of phosphate levels in the water is needed. The commonly used method is diffusive gradient in thin films (DGT) technique. The DGT technique is based on the ability of analyte to diffuse through a gel, which have a value named diffusion coefficient. This research was conducted in order to study the effect of different storage solution to the phosphate diffusion coefficient through polyacrylamide and agarose gels. Initial research performed with making the polyacrylamide and agarose gels. To observe the effect of different storage solutions, the gels partly stored in distilled water gel while the others are stored in a NaCl solution of 0.01 M. Phosphate diffusion coefficient was determined using Fick's Law after analyze the phosphate concentration using UV-Visible spectrophotometer. The results showed that phosphate diffusion coefficient was highest when polyacrylamide and agarose gels stored in NaCl solution of 0.01 M.
Lecturer Internship Program in Industry to Provide Real Work Experience for University Students Layta Dinira dan Deasy Chrisnia Natalia
PROCEEDING ICTESS (Internasional Conference on Technology, Education and Social Sciences) 2018: PROCEEDING ICTESS
Publisher : PROCEEDING ICTESS (Internasional Conference on Technology, Education and Social Sciences)

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Indonesia higher education learning system is currently less responsive to the industrial jobdynamics. As a result, there is a mismatch between graduates’ skill with the competenciesrequired by industry. Higher education has prepared nearly one million students to becometeachers, but the government has no plans to increase the number of public servant teachers.This policy makes most of graduates are unemployed. Companies in non-education andmanufacturing services have started complaining about the difficulty of finding workerslike engineers to fill in skilled positions. The rapid changing of industrial job dynamicsmake learning in higher education institution should move as rapidly as possible with theindustry. Therefore, it is necessary to develop collaboration between higher educationinstitution and industry. This paper proposed an innovation to learn and develop knowledgefrom industry through lecturer internship program. After attending internship program inthe industry, lecturers are expected to provide more real working experience to the students.The lecturer internship program in the industry will be focused on product research anddevelopment collaboration. In this paper will be presented a theoretical study about: (1)thebenefits; (2)factors that can affect; or (3)hinder the success of lecturer internship program inthe industry.Keywords: [lecturer, internship, program, industry, university
Modifikasi Kitosan sebagai Komposit Biopolimer untuk Pemisahan Pb(II) dan Cd(II) secara Simultan pada Sistem Multikomponen Layta Dinira
The Indonesian Green Technology Journal Vol 11, No 1 (2022)
Publisher : Program Pascasarjana Universitas Brawijaya

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Abstract

Biopolimer diketahui jumlahnya melimpah dan memiliki toksisitas rendah. Hal tersebut sesuai dengan kebutuhan adsorben saat ini, yaitu murah, ramah lingkungan, dan efisiensi tinggi. Biopolimer berbasis polisakarida seperti kitosan potensial untuk dijadikan adsorben karena karakteristik fisiko-kimianya masih dapat terus dieksplorasi. Metode yang digunakan dalam penulisan artikel ini adalah literature review yang dilakukan dengan cara mengumpulkan sumber data yaitu jurnal ilmiah 10 tahun terakhir yang terkait dengan pemanfaatan kitosan untuk pemisahan analit secara simultan. Berdasarkan literature review yang telah dilakukan, upaya peningkatan ketahanan dan adsorpsi kitosan dilakukan dengan cara menambahkan nanopartikel, partikel magnetik, bahan alam anorganik, atau material lain. Komposit kitosan yang digunakan untuk pemisahan kation Pb(II) dan Cd(II) secara simultan pada sistem multikomponen menunjukkan ion lain yang berada pada sistem biner, tersier, maupun kuartener menurunkan kapasitas adsorpsi. Adsorpsi pada sistem multikomponen lebih banyak bersifat antagonis dibanding non-interaksi dan sinergi. Selektivitas kitosan termodifikasi untuk ion Pb(II) dan Cd(II) dalam sistem multikomponen bergantung pada penggunaan material untuk modifikasi kitosan dan karakteristik ion logam seperti jari-jari dan elektronegativitas. Oleh sebab jumlah kitosan yang melimpah dan meningkatnya volume limbah cair industri yang mengandung logam berat, kitosan termodifikasi untuk adsorpsi ion logam multikomponen potensial dikembangkan di Indonesia.
Pengenalan Analisis Kualitatif Skala Mikro kepada Guru SMK Perkumpulan Pendidik Sains Kimia Indonesia (PPSKI) Layta Dinira; Ulfa Andayani; Adam Wiryawan; Ani Mulyasuryani
Bubungan Tinggi: Jurnal Pengabdian Masyarakat Vol 4, No 4 (2022)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/btjpm.v4i4.6622

Abstract

Keterbatasan alat dan bahan praktikum merupakan permasalahan yang dihadapi oleh guru kimia di SMK. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan kreativitas guru SMK dalam mengatasi masalah tersebut. Guru SMK diberikan pembinaan praktikum pengenalan analisis kualitatif skala mikro. Kegiatan dilaksanakan dalam beberapa tahap, yaitu tahap persiapan, tahap pelaksanaan, dan tahap evaluasi. Tahap persiapan terdiri atas penyusunan diktat praktikum, persiapan alat dan bahan percobaan, pembuatan video praktik, serta pembuatan kuesioner. Tahap pelaksanaan berupa praktikum analisis kualitatif skala mikro dengan empat topik. Tahap evaluasi dilakukan dengan cara menilai tugas presentasi dan mengolah kuesioner berisi tanggapan peserta. Analisis data tersebut dilakukan secara deskriptif. Kegiatan pengabdian kepada masyarakat dilaksanakan pada tanggal 27 Juni 2022 hingga 20 Agustus 2022. Hasil kegiatan menunjukkan peserta dapat mendemonstrasikan praktikum pengenalan analisis kualitatif skala mikro dan kegiatan telah berlangsung dengan baik. Setelah mengikuti kegiatan ini, peserta dapat mengembangkan materi praktikum skala mikro sesuai kondisi di sekolah masing-masing sehingga keterbatasan alat dan bahan dapat diatasi.Chemistry teachers in vocational high schools face challenges due to practicum equipment and chemical limitations. The objective of this community service is to increase the creativity of vocational high school teachers in addressing this issue. Participants have enrolled in a practicum on microscale qualitative analysis. Preparation, implementation, and evaluation were the three stages of the activity. Making a practicum module, getting chemicals and equipment ready for experiments, filming practical videos, and creating questionnaires were all part of the preparation process. The implementation step was delivered as a four-topic microscale qualitative analysis practicum. The evaluation step was completed by evaluating the presentation tasks and descriptively analyzing the participants' questionnaire responses. The community service was performed between June 27th and August 20th, 2022. The results showed that participants could demonstrate microscale qualitative analysis. The community service was performed well. Following the community service, participants can create micro-scale practicum material based on their schools' conditions, overcoming equipment and materials limitations.
Pendampingan Sertifikasi Halal Jalur Sehati (Self-Declare) Bagi Pelaku Usaha Mikro Kecil di Kecamatan Pujon Anna Safitri, M.Sc., Ph.D (Scopus ID : 57189988164; Sinta ID : 257342); Sri Wardhani; Ellya Indahyanti; Layta Dinira; Sovia Rosalin; Yenny Kornitasari
TRI DHARMA MANDIRI: Diseminasi dan Hilirisasi Riset kepada Masyarakat (Jurnal Pengabdian kepada Masyarakat) Vol 3, No 1 (2023)
Publisher : JTRIDHARMA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtridharma.2023.003.01.1

Abstract

Menguatnya industri halal di Indonesia berimplikasi positif pada peningkatan tingkat perekonomian masyarakat. Sertifikasi halal selain sebagai bentuk perlindungan terhadap jaminan kehalalan produk, juga memberikan nilai tambah yang berimplikasi positif terhadap volume produksi dan penjualan. Sertifikasi halal adalah suatu proses untuk memperoleh sertifikat halal melalui beberapa tahap pemeriksaan untuk membuktikan bahwa bahan, proses produksi, dan sistem jaminan halal dapat memenuhi standar Badan Penyelenggara Jaminan Produk Halal. Tujuan dari kegiatan pengabdian kepada masyarakat ini adalah pendampingan pendaftaran Nomor Induk Berusaha (NIB) bagi Usaha Mikro dan Kecil (UMK); pendampingan tentang peraturan jaminan produk halal bagi industri makanan dan minuman UMK; serta pendampingan pengajuan sertifikasi halal bagi UMK. Metode pelaksanaan kegiatan yaitu melalui sosialisasi, pendampingan pengisian persyaratan, dan pengajuan sertifikasi produk halal. Hasil kegiatan adalah pemahaman pelaku usaha tentang jaminan produk halal bagi pelaku UMK di sektor pangan, pendaftaran sertifikasi halal bagi pelaku usaha, dan sertifikat halal bagi UMK yang telah turun sebanyak 10 sertifikat halal.
Pendampingan Sertifikasi Halal Jalur Sehati UKM Kecamatan Turen Kabupaten Malang Sebagai Bagian dari Mahasiswa Membangun Desa (MMD) Anna Safitri; Sri Wardhani; Layta Dinira; Eko Waluyo; Rachmat Triandi Tjahjanto
JPPM (Jurnal Pengabdian dan Pemberdayaan Masyarakat) VOL. 8 NOMOR 2 JULI 2024 JPPM (Jurnal Pengabdian dan Pemberdayaan Masyarakat)
Publisher : Universitas Muhammadiyah Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/jppm.v8i2.21363

Abstract

Mahasiswa Membangun Desa (MMD) merupakan program Universitas Brawijaya dengan target 1000 desa di Jawa Timur. Program ini merupakan salah program yang didesain untuk meningkatkan keterlibatan perguruan tinggi melalui mahasiswa berperan aktif dalam kegiatan penguatan kapasitas sosial, ekonomi, dan lingkungan masyarakat. Pada kegiatan MMD di kecamatan Turen, kabupaten Malang, salah satu tema kegiatan adalah pendampingan sertifikasi halal dengan jalur sehati bagi pelaku UKM (Usaha Kecil dan Menengah) di kecamatan Turen. Tujuan dari kegiatan ini adalah untuk membantu para pelaku usaha yang tergabung dalam paguyuban UKM Maju Bersama dalam pengajuan sertifikat halal. Kegiatan dilaksanakan seiring dengan pelaksanaan kegiatan MMD di kecamatan Turen selama bulan Juli 2023, dengan tim pengabdian masyarakat merupakan DPL (dosen pembimbing lapang) MMD pada kecamatan Turen pada 10 desa. Metode kegiatan menggunakan model ABCD (asset-based community development), yaitu pemberdayaan masyarakat yang menekankan pada pemanfaatan aset dan potensi masyrakat. Hasil pengabdian masyarakat ini adalah sebanyak 20 pelaku usaha telah melakukan pengajuan sertifikat halal untuk produknya, dan 12 telah mendapatkan sertifikat halal. Selain itu mahasiswa mendapatkan manfaat yaitu mendapatkan pengalaman sosial, berinteraksi dengan masyarakat secara langsung dan melakukan pendampingan pada masyarakat dalam pengajuan sertifikasi halal.
In situ Measurement of Phosphate using Fe3O4/Chelex®100-Agarose-Oxalic Acid Hydrogel in Diffusive Gradient in Thin Films Dinira, Layta; Rumhayati, Barlah; Mardiana, Diah; Andayani, Ulfa
Molekul Vol 19 No 2 (2024)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2024.19.2.11199

Abstract

ABSTRACT. This study would be the first to develop a novel combination of Chelex®100 and Fe3O4 as a mixed binding gel for in situ phosphate measurement employing Diffusive Gradient in Thin Films (DGT). Fe3O4 and Chelex®100 were utilized as binding agents within a single binding layer for phosphate measurements in laboratory and natural water settings. The synthesized Fe3O4 was identified as magnetite and consisted of micro-sized particles. The pore size of the mixed binding gel ranged from 22.39 to 112.5 µm. Incorporating Chelex®100 with Fe3O4 in oxalic acid cross-linked agarose did not diminish phosphate adsorption efficiency. As adsorption time and phosphate concentration in solution increased, the quantity of adsorbed phosphate in the mixed binding gel also increased. Optimal phosphate elution was achieved using a basic solution, with a phosphate elution efficiency of 95.3 ± 0.4% observed with 0.4 M NaOH. The diffusion coefficient measured using the mixed binding gel was 1.08 times greater than that of polyacrylamide cross-linked with an agarose derivative (APA) gel, typically employed in the DGT technique. Phosphate concentration measurement with Fe3O4/Chelex®100-agarose oxalic acid in a DGT passive sampler at pH 4-8 yielded values twice those in bulk solution. Similar results were obtained when measuring phosphate in a 0.01 – 0.1 M NaNO3 solution. A T-test showed that the phosphate concentration obtained from mixed binding layer-DGT as an alternate passive sampler was not significantly different from grab sampling. This study underscores the suitability of Fe3O4-Chelex®100 impregnated in agarose-oxalic acid gel for monitoring phosphate in natural water via DGT. Keywords: Agarose, diffusive gradient in thin films, mixed binding gel Fe3O4, oxalic acid.
Co-Authors Adam Wiryawan Adam Wiryawan Adam Wiryawan Akhmad Sabarudin Alfi Nur Rusydi Amelia Mazidatul Mufida Ani Mulyasuryani Anindyah Sutra Karury Anna Safitri Arief, Miftahudin Asri Nurul Huda Barlah Rumhayati Barlah Rumhayati Barlah Rumhayati Barlah Rumhayati Barlah Rumhayati Darjito Darjito Diah Mardiana Diah Mardiana Digwanggi Arum Tazkiyatu An-Nufuus Eka Ratri Noor Wulandari Eko Waluyo Ellya Indahyanti Gatrananda, Sayyid Izzudin Nanda, Hanjar Ikrima Nugraha, Hedhi Setya Qonitah Fardiyah Qonitah Fardiyah Rachmat Triandi Tjahjanto Rafif, Sullahudin Ahmad Ratna Juwita Rosalin, Sovia Rosyida, Novita Safitri, Anna Safitri, M.Sc., Ph.D (Scopus ID : 57189988164 Sakhiyah Afifah Saputra, Agung Dwi Setiabudi, Ginanjar Sovia Rosalin Sri Wardhani Ulayya, Salwa Ulfa Andayani Ulfa Andayani Ulfa Andayani, Ulfa Yenny Kornitasari Yenny Kornitasari, Yenny