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Faktor-Faktor Yang Mempengaruhi Proses Ekstraksi Silika Sebagai Adsorben Untuk Pengyisihan Zat Organik Pada Air Gambut Sarah Dwi Arini; Lita Darmayanti; Dewi Fitria
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Palm Oil Fly Ash (POFA) is one of the solid wastes from the combustion of shells and palm fiber in the boiler. It is potential as an adsorbent because of its high silica content. Adsorption is one method that has the potential to remove color and organic matter substances in peat water. The purpose of this research is to study the effect of the ratio raw materials to solvents to the production of silica extracted from POFA and to determine the efficiency removal of Fe in peat water. The results of this study show the colors, organic substances and Fe in 1830 Pt/Co, 437,8 mg/l, and 0,07 mg/l. Keywords: Palm oil fly ash, silica, extraction, ratio of raw material to solvent, processing time, peat water, adsorption
Analisis Pengaruh Penambahan Lumpur Gambut Terhadap Penurunan Kekeruhan, Zat Organik, Dan Warna Air Gambut Dengan Cara Koagulasi Menggunakan Koagulan Poly Alumunium Chloride (PAC) Adhani Nindri Afrilia; Dewi Fitria
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The presence of Water the peat found in Riau and the water potential used as a source of drinking water. Peat water containing high organic so it needs processing before use. The content of organic substances and the high color in peat water hard to set aside with the process of coagulation – flocculation process, so in this study added peat mud. This study aims to determine the effect of the addition of peat mud in the process of coagulation-flocculation process using coagulant Poly Aluminum Chloride (PAC) 1%. The concentration of the peat Mud used is of 3 g/L, of 5 g/L, 7 g/L, 9 g/L and 11 g/L. Stirring quickly used 150 rpm for 1 minute and stirring slow 70 rpm, 50 rpm, and 30 rpm each for 30 minutes. From the results of the research with the addition of sludge concentration turbidity increased slightly, the concentration of organic substances decreased and the concentration of color decreased when compared with no addition of peat mud.Key words: Coagulation and Flocculation, Color, Organic Substance, Peat Water, Peat Mud, and Turbidity.
Penyisihan Zat Organik, Warna Dan Besi (Fe) Pada Pengolahan Air Gambut Secara Koagulasi Dan Flokulasi Dengan Menggunakan Koagulan Alami Dari Biji Jagung (Zea Mays L.) Firdha Ozani Rosselda Fahmi; Dewi Fitria; Syarfi Daud
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Peat water in Riau Province may be a source of clean water because of its availability, but the quality still does not meet the quality standards of clean water according to Minister of Health Regulation No. 32 of 2017, such as organic substances, colors and Fe still high. One method that can be used to remove contaminants in peat water is the coagulation and flocculation process using natural coagulant corn seeds. This study aims to determine the effect of coagulant dose of corn seeds and slow stirring speed in removing organic matter, color and Fe in peat water by varying the coagulant dose of dosis 5 mg/L; 10 mg/L; 15 mg/L; 20 mg/L; 25 mg/L and 30 mg/L The results obtained showed that the highest Fe removal was found at a coagulant dose of 80 mg/L with an efficiency of 61.12%, while for organic substances and colors it did not meet the quality standards. Key words: Coagulation and Flocculation, Peat Water, Corn seeds, Organic Substance, Color and Fe
Analisis Pengaruh Penambahan Lumpur Gambut Terhadap Penurunan Kekeruhan, Zat Organik, Dan Warna Air Gambut Dengan Cara Koagulasi Menggunakan Koagulan Aluminium Sulfate (Al2(SO4)3) Assi Syura; Dewi Fitria; Syarfi Daud
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Peat water is a surface water that’s found in swamp and lowland areas that have characteristics of organic matter, turbidity and high color. One of peat water treatment that can be used by coagulation-flocculation. This study aims to determine the effect of peat sludge addition in coagulation-flocculation process with Coagulant Aluminium Sulfate (Al2(SO4)3) 1%. Peat water was taken in Rimbo Panjang Village, Tambang District, Kampar Regency, Riau Province. Peat sludge used in this study amounted to 6.7 gr/L, 13.4 gr/L, 20 gr/L. 26.7 gr/L and 33.4 gr/L. Rapid stirring that used 250 rpm during 1 minute and slow stirring at 60 rpm, 40 rpm and 20 rpm every 20 minutes. The results of this researchshowed that the value of turbidity increased by 18.77% with allowance efficiency from 70.45% to 89.22%, organic substance efficiency increased by 3.84% with efficiency from 96.03% to 99.87% and color efficiency parameters increased by 1.36% with efficiency from 98.50% to 99.86%.Keywords: Peat Water, Coagulation-Floculation, Peat Sludge, Turbidity, Organic Substances, Color
Penyisihan Kadar Fe Dan Warna Pada Air Gambut Secara Koagulasi – Flokulasi Dengan Menggunakan Biokoagulan Kulit Pisang Kepok (Musa Acuminate) Mutiara Nursyarah; Dewi Fitria; Syarfi Daud
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Kepok banana peel (Musa Acuminate) is easily to find in solid waste in Indonesia.. One of the uses of the solid waste of Kepok banana peel is that it can be used as a natural coagulant in water treatment. In this study, Kepok banana peels were used as a natural coagulant in the coagulation process to remove Ferric content and color of peat water. Peat water was taken from Rimbo Panjang Village, Kampar Regency. Kepok banana peels was dried using oven with 60 oC temperature for 1 hour 20 minutes. Kepok banana peels are then blended into powder and sieved using a 100 mesh sieve. The coagulant dosages used in this study was 4 gr / L; 8 gr / L; 12 gr / L; 16 gr / L; 20 gr / L; 24 gr / L; and 28 gr / L. The rapid mixing speed used was 250 rpm for 1 minute and the slow mixing speed were 90 rpm, 50 rpm, and 20 rpm for 15 minutes respectively. The results of this study showed that the concentration of Fe in peat water decreased by 0.7551 mg / L with a removal efficiency of 54.23%. Different resuts found in the color parameter, the natural coagulant of Kepok banana peel was not able to remove the color in the peat water. Keywords: Coagulation-Flocculation, Kepok Banana Peels, Natural Coagulants, Peat Water
Karakterisasi Silika Fly Ash Yang Diperoleh Dengan Metode Ekstraksi Fika Rahma Yuni; Lita Darmayanti; Dewi Fitria
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This research was conducted to investigate the characteristics of silica extracted from Palm Oil Fly Ash.. The obtained silica involves the extraction process using an alkaline solution and an acid solution. It was found that the highest yield was obtained from extraction using a solid/liquid ratio of 1:12 with extraction time of 120 minutes. Silica characterization using XRF shows the element or compound contained in the sample.. Kata kunci : fly ash, silica, extraction, solid/liquid ratio, stirring time
Penurunan Kadar Besi Dengan Variasi Luas Trap Cascade Aerator Dan Debit Pada Air Gambut Muhammad Irwan Syahputra; Syarfi Daud; Dewi Fitria
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Fe content is a metal that is quite high in peat water. One technology that can be applied to remove Fe content is aeration. Aeration is the process of adding oxygen to water so that it can cause Fe oxidation reaction which will then cause Fe(OH)3 deposition. This study aims to determine the ability of the cascade aerator to remove Fe content in peat water with discharge variations of 4, 4,5, and 5 l/min with a variation of the trap area of 1,8 m2 and 2 m2. Also calculated is the value of the gas transfer coefficient (KLa) in the aeration process using a cascade aerator. Fe content before aeration was 1,22 mg/l. The results showed that the highest efficiency of removal of Fe content occurred at a discharge of 5 l/minute at a trap area of 2 m2 with an efficiency of 81,16%. The highest gas transfer coefficient value was obtained at a discharge of 5 l/minute on a 2 m2 trap area of 0,111/minute. The research results obtained have met the clean water quality standards PERMENKES RI No. 32 years 2017. Keywords: Cascade Aerator, Iron (Fe), Discharge, Trap Area, The Coefficient Of Gas Transfer (KLa).
PENGEMBANGAN MEDIA APRON HITUNG PADA ANAK USIA DINI Nurul Aulia; Dewi Fitria
Jurnal Educhild : Pendidikan dan Sosial Vol 12, No 2 (2023)
Publisher : Program Studi Pendidikan Guru PAUD Fakultas Keguruan dan Ilmu Pendidikan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33578/jpsbe.v12i2.7878

Abstract

This development research aims to determine the feasibility of learning media, namely counting apron media equipped with a guidebook for using media in early childhood learning activities. This research is a type of research and development (R&D) with the ADDIE model which consists of 5 stages, namely analysis, design, development, implementation, and evaluation. The focus of this research is the development of arithmetic apron media equipped with a guidebook for media use to facilitate teachers in making and using arithmetic apron media. The instrument used to collect data is a questionnaire given to validators, namely material expert validators, and media expert validators. Interview instruments given to teachers before and after using the counting apron media developed in this study.  Based on the validation results from the material expert validator, the score was 94.5% with the category "Very Feasible", and the results of the media expert validator obtained a score of 98.4% with the category "Very Feasible". The results of the teacher interview also stated that the counting apron media is suitable for use in early childhood learning activities. Based on the assessment score criteria, it can be said that the Calculation Apron Media Development in Early Childhood equipped with a guidebook for using the developed media is valid and very feasible to use in the early childhood learning process.
Upaya Meningkatkan Keterampilan Berpikir Kritis Dengan Model PBL Kelas V SDN 064034 Medan Johor: Penelitian Tindakan Kelas Br Tarigan, Dinda Renita; Dedy Juliandri Panjaitan; Dewi Fitria; Anjelia Tarigan
SAMBARA: Jurnal Pengabdian Kepada Masyarakat Vol 3 No 3 (2025): September
Publisher : CV Putra Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58540/sambarapkm.v3i3.975

Abstract

Penelitian ini dilatarbelakangi oleh pentingnya keterampilan berpikir kritis sebagai kompetensi utama dalam menghadapi tantangan pembelajaran abad 21, khususnya pada siswa kelas V SD Negeri 064034 Medan Johor. Materi nilai-nilai Pancasila dipilih sebagai konteks pembelajaran untuk menanamkan karakter sekaligus meningkatkan kemampuan analisis siswa. Tujuan penelitian ini adalah untuk meningkatkan keterampilan berpikir kritis melalui penerapan model Problem Based Learning (PBL). Penelitian ini menggunakan pendekatan Penelitian Tindakan Kelas (PTK) yang dilaksanakan dalam dua siklus, masing-masing terdiri dari tahap perencanaan, pelaksanaan, observasi, dan refleksi, dengan subjek sebanyak 25 siswa. Hasil penelitian menunjukkan adanya peningkatan signifikan skor keterampilan berpikir kritis siswa, dari rata-rata 56 pada pra-tindakan (kategori cukup), menjadi 70 pada siklus 1 (kategori baik), dan mencapai 82 pada siklus 2 (kategori sangat baik). Temuan ini menunjukkan bahwa model PBL efektif dalam mengembangkan kemampuan berpikir kritis siswa secara bertahap dan kontekstual. Kontribusi utama penelitian ini mencakup penguatan teori penerapan PBL dalam mata pelajaran nilai-nilai Pancasila, penyediaan strategi praktis bagi guru dalam merancang pembelajaran yang aktif dan bermakna, serta menunjukkan efektivitas pendekatan PTK dalam peningkatan mutu proses belajar mengajar. Secara sosial-edukatif, penelitian ini turut mendorong pembentukan karakter siswa melalui internalisasi nilai-nilai Pancasila yang dikembangkan melalui proses berpikir kritis. Dengan demikian, model Problem Based Learning direkomendasikan sebagai strategi pembelajaran yang tidak hanya meningkatkan aspek kognitif siswa, tetapi juga memperkuat pendidikan karakter di tingkat sekolah dasar.
Classroom Action Research Investigation Conducted by Pre-Service Teachers Education Program Siregar, Nurhafni; Nila Lestari; Nurmairina; Dinda Yarshal; Dewi Fitria; Harahap, Yulia Sari
Jurnal Ilmiah Pendidikan Profesi Guru Vol. 8 No. 1 (2025): May
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jippg.v8i1.75903

Abstract

The Teacher Professional Education Study Program (PSPPG) has been organizing Pre-Service PPG since 2022. In semester II, students must carry out Classroom Action Research (PTK) and make a report based on the research results. This study analyzes the implementation of PTK in terms of the scope of the title, procedures, benefits and follow-up of PSPPG to improve students' PTK in the future. The study subjects were 18 English students and 25 Elementary School Teacher Education students at five schools where PPL was held. The research method used qualitative descriptive with data collection techniques through observation, questionnaires and interviews. The data collection instrument used observation sheets and questionnaires. The data analysis technique used qualitative and quantitative descriptive analysis. The analysis results showed that the implemented PTK reached a pretty good category. Students have carried out PTK according to the procedure. Specifically, it can be concluded that the output in the form of publications has not been maximized because it only reached 35%. In the future, PPG UMNAW needs to encourage 100% of students to have outputs in the form of publications in nationally accredited journals by issuing official regulations and a guidebook for publishing articles on PTK results.
Co-Authors Adelina Silitonga Adhani Nindri Afrilia Anas Tasya Anjelia Tarigan Assi Syura Br Tarigan, Dinda Renita Dedy Juliandri Panjaitan Dhella Angelina Fitri Dinda Yarshal Fika Rahma Yuni Firdha Ozani Rosselda Fahmi Lita Darmayanti Mifthahul Husna Milwana Harahap Muhammad Irwan Syahputra Mutiara Nursyarah Nadini Widya Hastuti Nila Lestari Nurhafni Siregar Nurmairina Nurul Aulia Sarah Dwi Arini Siti Marwiyah Sobrini Fauziah Sri Mulyanti Syarfi Daud Wena Altia Tendang Yulia Sari Harahap Yunita Wulandari