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  • 1
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    Online Resource
    Pengaruh Pertumbuhan Ekonomi, Indeks Pembangunan Manusia (IPM), dan Kemiskinan terhadap Tingkat Pengangguran Terbuka di Provinsi Jambi Selama Tahun 2017-2021
    Universitas Batanghari Jambi ; 2023
    In:  Ekonomis: Journal of Economics and Business Vol. 7, No. 1 ( 2023-03-30), p. 672-
    Details
    In: Ekonomis: Journal of Economics and Business, Universitas Batanghari Jambi, Vol. 7, No. 1 ( 2023-03-30), p. 672-
    Abstract: This study aims to see how much influence economic growth, human development index, and poverty have on the open unemployment rate in Jambi Province. The type of data used in this research is in the form of secondary data obtained from the Central Bureau of Statistics using cross-sectional data from 11 regencies/cities in Jambi Province and time series data for the 2017-2021 period. The data analysis used is panel data analysis with the fixed effect model (FEM). The results showed that economic growth had a negative and significant effect on the open unemployment rate in Jambi Province, the human development index (IPM) had a positive and insignificant effect on the open unemployment rate in Jambi Province while poverty had a positive and significant effect on the open unemployment rate in Jambi Province.
    Type of Medium: Online Resource
    ISSN: 2597-8829
    URL: Issue
    URL: Article
    DOI: 10.33087/ekonomis.v7i1
    DOI: 10.33087/ekonomis.v7i1.1082
    Language: Unknown
    Publisher: Universitas Batanghari Jambi
    Publication Date: 2023
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  • 2
    Online Resource
    Online Resource
    PENGARUH DISIPLIN KERJA DAN KOMPENSASI TERHADAP KINERJA PEGAWAI DENGAN DIMEDIASI VARIABEL MOTIVASI
    Universitas Mataram ; 2020
    In:  JMM UNRAM - MASTER OF MANAGEMENT JOURNAL Vol. 9, No. 4 ( 2020-11-04), p. 315-324
    Details
    In: JMM UNRAM - MASTER OF MANAGEMENT JOURNAL, Universitas Mataram, Vol. 9, No. 4 ( 2020-11-04), p. 315-324
    Abstract: TThis research aimed to analyze the effect of work discipline and compensation on employee performance, and the effect of motivation as intervening variabel. The population of research amounted 39 employees. Thirthy four employees in Investment And Integrated One Stop Services Of Bima City were selected as the sample in this research.The data collection technique used is a questionnaire that has been tested for validity and reliability, then tested using path analysis. From the results data analysis produced several research findings as follows work discipline has a positive and significant effect on employee performance, compensation has no effect on employee performance, motivation does not effect in employee performance, motivation can not mediate the effect of work discipline with employee performance, motivation can not mediate the effect of work compensation with employee performance.Keywords:Work Discipline; Compensation; Motivation; and Employee Performance
    Type of Medium: Online Resource
    ISSN: 2548-3919 , 2621-7902
    URL: Issue
    URL: Article
    DOI: 10.29303/jmm.v9i4
    DOI: 10.29303/jmm.v9i4.569
    Language: Unknown
    Publisher: Universitas Mataram
    Publication Date: 2020
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  • 3
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    Online Resource
    KARAKTERISTIK PESISIR DAN PERAIRAN SEKITAR PULAU SIRANDAH UNTUK MENDUKUNG WISATA KEPULAUAN DI KOTA PADANG
    Agency for Marine and Fisheries Research and Development ; 2017
    In:  Jurnal Kelautan Nasional Vol. 13, No. 1 ( 2017-12-15), p. 1-
    Details
    In: Jurnal Kelautan Nasional, Agency for Marine and Fisheries Research and Development, Vol. 13, No. 1 ( 2017-12-15), p. 1-
    Abstract: Pulau Sirandah saat ini mulai menjadi salah satu tujuan wisata kepulauan yang ramai dikunjungi di Kota Padang. Kajian pesisir dan perairan di pulau ini sangat diperlukan, tujuannya untuk mengetahui karakteristik sumber daya pesisir, parameter oseanografi, dan kondisi kualitas perairan di sekitar pulau, sehingga dapat berguna untuk mendukung wisata kepulauan di sekitar pulau tersebut. Hasil yang diperoleh menunjukkan bahwa cukup baik kondisi dari pesisir pantai dan kualitas perairan di sekitar Pulau Sirandah. Secara keseluruhan pulau ini di kelilingi oleh pantai beting, sedimen berpasir putih, tergolong landai (6,21 – 9,52°), dengan pesisir pantai yang luas (total 1,32 Ha) dan lebar (9,5 – 17,3 m), serta garis pantai sepanjang 1,45 km. Perairan sekitar Pulau Sirandah memiliki kedalaman laut mencapai 50 m (dekat pesisir pantai masih 0 – 10 m), tergolong perairan dangkal. Pasang surut yang terjadi tergolong pasang surut campuran condong ganda (nilai F= 0,3558), dan kondisi arus permukaan tergolong rendah, berkisar antara 6,47 - 17,40 cm/dt. Kualitas air laut sekitar pulau masih tergolong baik, nilai suhu (SST) berkisar 29,9 – 30,1°C, pH 8,96 – 9, DO 7,72 – 8,13 mg/lt, salinitas 29,9 – 30,1 ‰, dan kecerahan perairan 6,15 – 8,5 m (mencapai 100%). Kondisi karakteristik pesisir dan perairan di Pulau Sirandah sangat mendukung untuk wisata kepulauan, yaitu wisata pantai (rekreasi) sangat sesuai dengan nilai 81,12 %, wisata snorkeling cukup sesuai dengan nilai rata-rata 61,40 %, dan wisata selam cukup sesuai dengan rata-rata sebesar 62,96 %. Adapun daya dukung kawasan (DDK), untuk wisata pantai (rekreasi) sebanyak 58 orang, wisata snorkeling sebanyak 48 orang, serta wisata selam sebanyak 8 pasangan penyelam dalam sehari.
    Type of Medium: Online Resource
    ISSN: 2615-4579 , 1907-767X
    URL: Issue
    URL: Article
    DOI: 10.15578/jkn.v1i1
    DOI: 10.15578/jkn.v12i3.6245
    Language: Unknown
    Publisher: Agency for Marine and Fisheries Research and Development
    Publication Date: 2017
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  • 4
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    Online Resource
    The Role of Principal As An Educator In Building A Religious Culture in Public Elementary School Number 12 Semabu District Tebo
    STAI Taruna Surabaya ; 2023
    In:  International Journal of Islamic Thought and Humanities Vol. 2, No. 2 ( 2023-09-23), p. 288-299
    Details
    In: International Journal of Islamic Thought and Humanities, STAI Taruna Surabaya, Vol. 2, No. 2 ( 2023-09-23), p. 288-299
    Abstract: Principals are responsible for running the wheels of their school organization. This study tries to describe the data related to the role of the principal as an educator in building a religious culture at SDN 12 Semabu, Tebo Regency. With a descriptive qualitative approach where this research aims to understand or describe phenomena or events in an in-depth and detailed way. Observation, interview and documentation techniques are the basis for data collection. The results of this study that the principal at SDN 12 Semabu Tebo Regency has been able to carry out his role as an educator or educator with several abilities, namely understanding his role as principal, supervising and carrying out his duties as an educator. Meanwhile, the principal in building a religious culture, provides religious guidance and emphasizes all Muslimah female students to wear the jilbab every day, attend Friday prayers in congregation, commemorate Islamic holidays, learn to read the Qur'an and have a noble character with a culture of greetings, and smiles as a religious culture at SDN 12 Semabu. There are students who follow other religions, of course this is the obligation of SDN 12 Semabu to follow the applicable curriculum procedures.
    Type of Medium: Online Resource
    ISSN: 2962-4681 , 2961-8967
    URL: Issue
    URL: Article
    DOI: 10.54298/ijith.v2i2
    DOI: 10.54298/ijith.v2i2.133
    Language: Unknown
    Publisher: STAI Taruna Surabaya
    Publication Date: 2023
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  • 5
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    Online Resource
    ANALISIS STRATEGI PEMASARAN TERHADAP KEPUASAN PELANGGAN OLSHOP ALBBIAID
    Universitas Nurul Jadid ; 2021
    In:  PROFIT: Jurnal Kajian Ekonomi dan Perbankan Syariah Vol. 5, No. 1 ( 2021-07-22)
    Details
    In: PROFIT: Jurnal Kajian Ekonomi dan Perbankan Syariah, Universitas Nurul Jadid, Vol. 5, No. 1 ( 2021-07-22)
    Abstract: AbstrakTujuan utama dari penelitian ini adalah untuk mengetahui strategi pemasaran online pada Online Shop Albbia.id guna untuk menarik konsumen, mengetahui taktik apa saja dalam berbisnis dan meningkatkan penjualan melalui berbagai pemasaran digital teknik, serta faktor pendukung dan penghambat strategi pemasaran pada Online Shop Albbia.id. Penelitian ini menggunakan penelitian survey dengan narasumber Labiba Bachmid sebagai pemilik Online Shop Albbia.id bisnis mandiri berbasis online dengan memanfaatkan media sosial. Terdapatberbagai macam produk, yaitu Pakaian Wanita, Organizer, Peralatan Rumah Tangga, dan berbagai macam model Tas. Penelitian ini memberikan gambaran tentang apa yang menjadi dasar pemilihan media, strategi, pemilihan segmen, kelebihan dan kelemahan, serta kegagalan apa yang pernah dialami dalam menjalankan usaha bisnis online. Harapan yang diinginkan dari hasil penelitian ini adalah menjadi acuan bagi calon pelaku khususnya anak muda dalam pemasaran online. Sehingga kedepan dapat mengambil contoh yang baik danmelengkapinya menjadi strategi yang lebih dahsyat.Kata kunci: usaha kreatif, pemasaran digital, pemasaran online
    Type of Medium: Online Resource
    ISSN: 2597-9434 , 2685-4309
    URL: Issue
    URL: Article
    DOI: 10.33650/profit.v5i1
    DOI: 10.33650/profit.v5i1.1567
    Language: Unknown
    Publisher: Universitas Nurul Jadid
    Publication Date: 2021
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  • 6
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    Online Resource
    Keanekaragaman Tumbuhan di Kawasan Hutan Mangrove Pangarengan Cirebon
    Universitas Muhammadiyah Malang ; 2022
    In:  Journal of Forest Science Avicennia Vol. 4, No. 2 ( 2022-02-02), p. 66-79
    Details
    In: Journal of Forest Science Avicennia, Universitas Muhammadiyah Malang, Vol. 4, No. 2 ( 2022-02-02), p. 66-79
    Abstract: Mangrove Pangarengan yang terletak di Pesisir Kecamatan Pangenan, Kabupaten Cirebon masih terbatas informasi tentang keanekaragaman tumbuhannya. Penelitian ini bertujuan untuk mengetahui keanekaragaman tumbuhan yang ada di kawasan hutan mangrove Pangarengan Cirebon. Penelititan ini merupakan penelitian deskriptif dengan pengambilan data menggunakan metode jelajah. Analisis data dilakukan dengan menggunakan metode deskripsi keanekaragaman tumbuhan (description method to species diversity).  Identifikasi dan klasifikasi data berdasarkan jenis yang ditemukan. Berdasarkan hasil penelitian, ditemukan sebanyak 24 spesies tumbuhan yang berasal dari kelas yang sama yaitu Magnoliopsida, dan terdiri atas 10 ordo, 15 Famili, dan 23 Genus. Famili yang paling banyak ditemukan adalah Asteraceae yaitu sebanyak 5 spesies. Perawakan tumbuhan yang dijumpai pada penelitian ini adalah pohon, liana, perdu, dan herba. Berdasarkan hasil pengamatan di lapangan, tumbuhan yang mendominasi di kawasan hutan mangrove Pangarengan adalah mangrove sejati Rhizophora mucronata yang banyak tumbuh di sepanjang tepi sungai, dan Avicennia marina yang banyak ditemukan di sepanjang tepi laut
    Type of Medium: Online Resource
    ISSN: 2622-8505 , 2722-7928
    URL: Article
    DOI: 10.22219/avicennia.v4i2.18180
    Language: Unknown
    Publisher: Universitas Muhammadiyah Malang
    Publication Date: 2022
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  • 7
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    Online Resource
    KARAKTERISTIK ARUS LAUT PERAIRAN TELUK BENOA – BALI
    Geospatial Information Agency of The Republic of Indonesia ; 2017
    In:  JURNAL ILMIAH GEOMATIKA Vol. 23, No. 1 ( 2017-08-04), p. 37-
    Details
    In: JURNAL ILMIAH GEOMATIKA, Geospatial Information Agency of The Republic of Indonesia, Vol. 23, No. 1 ( 2017-08-04), p. 37-
    Abstract: 〈 p class="judulabstrakindo" 〉 ABSTRAK 〈 /p 〉 〈 p class="abstrakindo" 〉 Perairan Teluk Benoa merupakan kawasan semi tertutup dengan mulut sempit yang memisahkan antara Pulau Serangan dan Tanjung Benoa. Arus laut perairan Teluk Benoa, yang dekat pantai berperan penting dalam proses transpor sedimen di daerah pantai yang merupakan daerah gelombang mulai pecah hingga ke arah garis pantai. Tujuan penelitian adalah mengetahui karakteristik arus laut yang terjadi, analisis dari penyajian secara 〈 em 〉 scatter plot 〈 /em 〉 dan 〈 em 〉 stic plot 〈 /em 〉 , sehingga diketahui faktor dominan pembangkit arus tersebut. Data arus laut diperoleh dari hasil pengukuran pihak swasta menggunakan alat ukur ADCP. Analisis arus laut dengan 〈 em 〉 scatter 〈 /em 〉 dan 〈 em 〉 stic plot 〈 /em 〉 〈 em 〉 〈 /em 〉 untuk melihat arah dominan arus, serta melihat hubungan kejadian arus dengan pasang surut air laut, selain itu juga dengan perhitungan kisaran kecepatan arus yang terjadi selama pengukuran. Hasil yang diperoleh adalah arus laut di perairan Teluk Benoa berkisar antara 0,001 - 1,715 m/s (pengamatan bulan Juni - Juli 2015). Kecepatan arus pada mulut teluk lebih besar (maksimal sebesar 1,715 m/s), sedangkan di dalam teluk kecepatan arus lebih rendah (maksimal sebesar 0,883 m/s). Pada saat air pasang, arah arus dominan ke arah dalam teluk dan saat air laut surut arah dominan arus ke arah luar teluk. Kesimpulan yang diperoleh adalah kejadian arus laut di perairan Teluk Benoa lebih dominan berupa arus pasang surut. Saat kondisi bulan purnama kecepatan arus lebih tinggi dari pada saat posisi bulan separuh (kuarter pertama atau ketiga). Pada umumnya, pada mulut teluk memiliki arus yang cukup tinggi sebagai akibat celah sempit, dengan pola yang tidak beraturan akibat pengaruh perlintasan kapal dan aktivitas keluar masuk teluk. 〈 /p 〉 〈 p 〉 〈 strong 〉 Kata kunci 〈 /strong 〉 : arus laut, karakteristik arus laut, arus pasang surut, Teluk Benoa 〈 /p 〉 〈 p class="judulabstraking" 〉 ABSTRACT 〈 /p 〉 〈 p class="abstraking" 〉 Benoa Bay waters is a semi-enclosed area with quite a narrow mouth that separates the Serangan Island and Tanjung Benoa. Ocean currents in Benoa Bay, which is close to the beach plays an important role in the process of sediment transport in the beach area where is the waves began to break up towards the shoreline. The research objective was to know the characteristics of ocean currents that occur, from the analysis of the scatter and stic plot, so it’s known that the dominant factor of the current generator. The data of ocean currents obtained from the measurement of private parties using ADCP measuring instrument. Analysis of ocean currents with scatter and stic plot to see the dominant direction of current, and to see the relationship of current occurrence with the tide, besides also with calculation of current velocity. The results obtained are ocean currents in the Benoa Bay waters ranged from 0,001 to 1,715 m/s (observations in June-July 2015). Flow velocity at the mouth of the bay is greater (maximum of 1,715 m/s), while in the lower bay flow speed (maximum of 0,883 m/s). At high tide, the dominant current direction towards the bay and vice versa during low tide predominant direction of flow towards the outside of the bay. The conclusion is the incidence of ocean currents in the Benoa Bay waters is predominantly influenced by the tidal current. When the full moon conditions the current velocity is higher than at half month position. In general, at the mouth of the bay has a current high enough as a result of the narrow gap, with irregular pattern due to the influence and activities of ship crossings in and out of the bay. 〈 /p 〉 〈 p 〉 〈 strong 〉 Keywords 〈 /strong 〉 : 〈 em 〉 ocean current, characteristics of ocean current, tidal current, Benoa Bay 〈 /em 〉 〈 /p 〉
    Type of Medium: Online Resource
    ISSN: 0854-2759
    URL: Article
    DOI: 10.24895/JIG.2017.23-1.631
    Language: Unknown
    Publisher: Geospatial Information Agency of The Republic of Indonesia
    Publication Date: 2017
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  • 8
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    Online Resource
    The environmental services of Pangarengan mangrove forest in Cirebon, Indonesia: conserving biodiversity and storing carbon
    UNS Solo ; 2021
    In:  Biodiversitas Journal of Biological Diversity Vol. 22, No. 12 ( 2021-12-03)
    Details
    In: Biodiversitas Journal of Biological Diversity, UNS Solo, Vol. 22, No. 12 ( 2021-12-03)
    Abstract: Abstract. Purwanto RH, Mulyana B, Sari PI, Hidayatullah MF, Marpaung AA, Putra ISR, Putra AD. 2021. The environmental services of Pangarengan mangrove forest in Cirebon, Indonesia: conserving biodiversity and storing carbon. Biodiversitas 22: 5609-5616. Pangarengan mangrove forest in Cirebon, Indonesia, plays a vital role in providing ecosystem services, such as conserving biodiversity and storing carbon. The area of the Pangarengan mangrove forest is relatively small, but it is home to diverse flora and fauna. Also, it can mitigate climate change by storing carbon. Unfortunately, no specific records exist on biodiversity and carbon stock in the Pangarengan mangrove forest. This study aimed to record the diversity of flora and fauna of the Pangarengan mangrove using a survey approach and to estimate its carbon stocks using a non-destructive sampling method, except for seedlings, on 78 sampling plots, distributed randomly along the banks of the Cipaluh River. The results revealed that the flora consisted of 24 species, and the fauna was composed of 12 species. The mangrove species in the Pangarengan mangrove forest was dominated by Rhizophora mucronata. The carbon stocks varied among species or the life stages of plants (seedlings, saplings, poles, and trees). The carbon stock of Avicennia marina trees was the highest (110.810 MgC/ha), and the lowest was the seedlings of the Avicennia alba (0.005 MgC/ha). Furthermore, the interpretation of the images showed that the Pangarengan mangrove forest area is 21.5 ha. The mangrove forest is located in the coastal area of the Java Sea, 2.4 km from the residential area of Pangarengan village. It is crucial to preserve the Pangarengan mangrove forest because it functions as a source of biodiversity and carbon storage.
    Type of Medium: Online Resource
    ISSN: 2085-4722 , 1412-033X
    URL: Article
    DOI: 10.13057/biodiv/d221246
    Language: Unknown
    Publisher: UNS Solo
    Publication Date: 2021
    detail.hit.zdb_id: 2660049-3
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  • 9
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    Online Resource
    Allometric model to estimate biomass and carbon of seedling in Pangarengan mangrove forest, Cirebon, West Java
    Research, Development and Innovation Agency, Ministry of Environment and Forestry ; 2021
    In:  Jurnal Galam Vol. 2, No. 1 ( 2021-08-18), p. 29-40
    Details
    In: Jurnal Galam, Research, Development and Innovation Agency, Ministry of Environment and Forestry, Vol. 2, No. 1 ( 2021-08-18), p. 29-40
    Abstract: Ekosistem mangrove di Desa Pangarengan, Kabupaten Cirebon memberikan manfaat jasa lingkungan, diantaranya sebagai penjerap dan penyimpan karbon. Umumnya, pendugaan simpanan karbon hutan mangrove menggunakan persamaan alometrik. Namun demikian, persamaan alometrik yang tersedia saat ini masih disusun dari tahapan pertumbuhan pancang, tiang, dan pohon. Tujuan penelitian ini adalah menyusun model alometrik untuk semai di hutan mangrove. Penelitian dilaksanakan pada bulan Juni 2021 di hutan mangrove Desa Pangarengan, Kabupaten Cirebon. Alat yang digunakan dalam penelitian adalah kaliper, pita ukur, timbangan digital, dan gunting tanaman. Bahan penelitian berupa semai mangrove jenis Rhizophora mucronata, Avicennia marina, dan Sonneratia caseolaris sebanyak 25 sampel. Model alometrik terbaik dalam menduga biomassa berat kering dengan prediktor diameter pangkal adalah Y = 35,013 Dp1,860 (R2 adj = 0,873; SEE = 0,472) dengan menggunakan prediktor diameter ujung adalah Y = 249,573 Du2,276 (R2 adj = 0,524; SEE = 0,710), sedangkan alometrik penduga kandungan karbon semai adalah Y = 5,835 Dp1,804 (R2 adj = 0,831; SEE = 0,528) dan Y = 35,750 Du2,107 (R2 adj = 0,607; SEE = 0,805). Model alometrik power dengan prediktor diameter pangkal cukup baik dalam menduga biomassa berat kering dan kandungan karbon semai di hutan mangrove Desa Pangarengan. Kata kunci: akuntansi karbon, mitigasi, iklim, regresi
    Type of Medium: Online Resource
    ISSN: 2723-4924 , 2723-5084
    Uniform Title: MODEL ALOMETRIK PENDUGA BIOMASSA DAN KARBON SEMAI DI HUTAN MANGROVE PANGARENGAN, CIREBON, JAWA BARAT
    URL: Issue
    URL: Journal
    URL: Article
    DOI: 10.20886/glm.2021.2.1
    DOI: 10.20886/glm
    DOI: 10.20886/glm.2021.2.1.29-40
    Language: Unknown
    Publisher: Research, Development and Innovation Agency, Ministry of Environment and Forestry
    Publication Date: 2021
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  • 10
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    Online Resource
    Modifikasi Proses Pengolahan Boiler Feed Water (BFW) dari All Volatile Treatment (AVT) menjadi Oxygenated Treatment (OT) untuk Produksi Listrik Ramah Lingkungan
    Universitas Gadjah Mada ; 2021
    In:  Jurnal Rekayasa Proses Vol. 15, No. 2 ( 2021-12-30), p. 131-
    Details
    In: Jurnal Rekayasa Proses, Universitas Gadjah Mada, Vol. 15, No. 2 ( 2021-12-30), p. 131-
    Abstract: In power plant industries, boiler feed water (BFW) quality becomes the main parameter for steam generation, which is used for electricity production. To generate standard BFW for power plants, each impurity within water resources should be removed to prevent corrosion and scale deposition by several processes such as sedimentation, coagulation, polishing, and deaeration. Operation conditions that involved high temperature would trigger corrosion as a crucial factor in the maintenance and practical lifetime of the equipment. In the beginning of the operation, PT. Cirebon Electric Power (CEP) used All Volatile Treatment–Reduction (AVT-R) by injection of both ammonia and hydrazine. In order to optimize the operation, the BFW treatment was changed to All Volatile Treatment–Oxidation (AVT-O) that only uses of ammonia and deaerator for removing the dissolved gas. Based on the actual evaluation, AVT technology showed less performance related to corrosion prevention and high chemical consumption. Therefore, PT. CEP tried to implement modification in the BFW treatment, which is AVT technology to Oxygenated Treatment (OT). This paper is to evaluate the effect of those modifications on corrosion prevention and resource-energy saving. The modification into OT showed valuable results that decrease concentration of dissolved Fe from 1 ppb to 0.1 ppb in the deaerator outlet stream. This data reveals that good corrosion prevention can be achieved through the creation of passive layers, hematite Fe2O3. Oxygen injection into the water circulation system yielded an oxidation atmosphere so that the passive layer, Fe2O3, was formed. In addition to corrosion prevention, this modification also cut the amount of ammonia injection into the system from 2 ppm to 0.12 ppm. Reduction of that ammonia injection provides other benefits such as decreasing the volume of resin regeneration, which becomes only twice a month. This situation also created other benefits such as reducing the regeneration water, chemicals, and wastewater. Thus, the modification could establish the electricity production by PT. CEP more environmentally friendly and sustainable.A B S T R A KPada operasi PLTU, kualitas boiler feed water (BFW) menjadi parameter yang krusial untuk menghasilkan steam yang akan digunakan untuk memproduksi listrik. Untuk mendapatkan BFW sesuai dengan standar yang ada, maka pengotor di dalam air baku industri harus dihilangkan karena dapat menyebabkan korosi dan pembentukan kerak, baik pada pipa maupun peralatan. Kondisi operasi yang melibatkan steam pada suhu tinggi menyebabkan korosi menjadi masalah yang krusial terutama terkait dengan maintenance dan umur efektif pabrik. Pada awal berdirinya, PT. Cirebon Electric Power (CEP) menggunakan teknologi All Volatile Treatment–Reduction (AVT-R) dengan injeksi amonia dan hidrazin. Selanjutnya, dilakukan optimasi melalui perubahan proses menjadi All Volatile Treatment–Oxidation (AVT-O) dengan hanya menginjeksikan amonia dan mengoptimalkan fungsi deaerator untuk menghilangkan pengotor dissolved gas. Berdasarkan data lapangan, teknologi AVT yang digunakan kurang memberikan pencegahan korosi yang baik dan juga jumlah bahan kimia yang digunakan masih relatif banyak. Agar lebih ramah lingkungan dan handal, PT. CEP berusaha untuk melakukan modifikasi terhadap pengolahan boiler feed water (BFW) dari yang semula menggunakan teknologi AVT-O menjadi Oxygenated Treatment (OT). Penelitian ini bertujuan untuk mengevaluasi dampak modifikasi sistem AVT menjadi OT pada pencegahan korosi dan juga penghematan sumber daya. Modifikasi sistem AVT-O menjadi OT berhasil menurunkan konsentrasi dissolved Fe dari 1 ppb menjadi 0,1 ppb pada BFW. Hal ini menunjukkan terjadinya peningkatan pencegahan korosi melalui pembentukan double protective layer yang merupakan kombinasi magnetite (Fe3O4) dan hematite (Fe2O3). Injeksi oksigen ke dalam sistem mengubah kondisi air menjadi suasana oksidasi sehingga mampu mengubah dan membentuk lapisan baru sebagai pencegahan korosi. Selain pencegahan korosi, modifikasi ini juga berhasil menurunkan jumlah injeksi amonia dari 2 ppm menjadi 0,12 ppm dalam siklus air yang ada. Penurunan jumlah injeksi amonia ini akan memberikan keuntungan beruntun berupa berkurangnya frekuensi regenerasi resin dari semula 8 menjadi 2 kali perbulan. Kondisi ini akan menghasilkan penghematan sumber daya berupa kebutuhan air untuk regenerasi, bahan kimia amonia, dan beban pencemaran. Oleh karena itu, modifikasi ini telah membuat proses produksi listrik di PT. CEP lebih ramah lingkungan dan berkelanjutan.Kata kunci: All Volatile Treatment (AVT); efisiensi energi; korosi boiler; Oxygenated Treatment (OT)
    Type of Medium: Online Resource
    ISSN: 2549-1490 , 1978-287X
    URL: Article
    DOI: 10.22146/jrekpros.65976
    Language: Unknown
    Publisher: Universitas Gadjah Mada
    Publication Date: 2021
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