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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Indonesian Mining Journal Jurnal Redoks Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam JURNAL TEKNIK Journal Industrial Manufacturing Prosiding Simposium Nasional Multidisiplin (SinaMu)

Rosarina, Desy

Universitas Muhammadiyah Tangerang

Author-ID : 2694898

Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Physics Public Health Social Sciences

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Articles

Microplastic in Marine Environment and Its Impact Wibowo, Yudha Gusti; Maryani, Anis Tatik; Rosanti, Dewi; Rosarina, Desy
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol 16, No 1 (2019): SAINMATIKA
Publisher : Faculty of Mathematics and Natural Science, Universitas PGRI Palembang

This article was the result of a research of literature study sources and impact of microplastic in the marine environment. Plastic debris could make microplasric caused by ultraviolet and give some negative impact for marine environment. Plastic debris in marine environment has come from industrial and fishing activities (human activities). All of marine environment in the world has contaminated by microplastic, microplastic will give negative impact for marine biota, recent study inform that turtle and fish have high microplastic content in both them.plastics industries should take responsibility for the end-of-life oftheir products by introducing plastic recycling or upgrading programmers.

Eliminasi Waste Pada Proses Produksi Malt Powder Dengan Metode VSM dan VALSAT (Studi Kasus PT. XYZ) Desy Rosarina; Sri Lestari; Johan Candra Dinata
Jurnal Teknik Vol 11, No 1 (2022): Januari - Juni 2022
Publisher : Universitas Muhammadiyah Tangerang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31000/jt.v11i1.5593

The background of this research is that there is still waste in the malt powder production process, as evidenced by the results of the questionnaire which show 17% waste defect, 16% inventory and 15% waiting. This study aims to identify waste in the malt powder production process using a lean manufacturing approach and the tools used in this study are value stream mapping (VSM) and value stream analysis tools (VALSAT). The initial stage is to create a value stream mapping curent state, then analysis using process activity mapping (PAM) to identify types of activities such as value added (VA), non value added (NVA) and necesary non value added. From the analysis, the value added ratio is 55.44%. Then perform waste analysis with supply chain response matrix (SCRM) and then analyze waste with quality filter mapping (QFM) for defect types of waste. The percentage of delay activity was 7.09%, where this activity was included in non-added value (NVA) activities and the results of the SCRM analysis of the raw material storage area were 1, 03, the production process area was 0.13 and the finished goods storage area was 0.96. Then the time to fulfill the order fulfillment of malt powder is 47 days with the cumulative physical stock days of 2.1 days. Keywords: Lean Manufacture, Value Stream Mapping, Value Stream Analys Tools, Process Activity Mapping, Lean Production

APLIKASI ANALYTICAL HIERARCHY PROCESS (AHP) UNTUK PENENTUAN ALTERNATIF SISTEM MOLD MH14024 BOBBIN HORN DI PT MITSUBA INDONESIA Sri Lestari; Desy Rosarina; Eko Hariyanto
Journal Industrial Manufacturing Vol 3, No 2 (2018): Journal Industrial Manufacturing
Publisher : Program Studi Teknik Industri Universitas Muhammadiyah Tangerang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31000/jim.v3i2.851

MH14-024 Bobbin Horn adalah sebuah produk untuk komponen Horn atau klakson yang diproduksi oleh PT. Mitsuba Indonesia. Produk ini diproduksi dengan proses injection molding dengan sistem cold runner, yaitu proses produksi injection molding yang menghasilkan barang dengan kualitas bagus, tapi masih disertai runner. Runner ini yang dilihat oleh PT. Mitsuba Indonesia suatu hal yang sia-sia, karena tidak mempunyai nilai jual dan bahkan memerlukan suatu proses yang bernama crusher, supaya runner tersebut bisa kembali digunakan sebagai bahan campuran pada proses injection berikutnya. PT. Mitsuba Indonesia terus mengembangkan proses produksi untuk terus meningkatkan produktifitas, salah satunya dengan mengikuti perkembangan teknologi. Saat ini, proses produksi dengan menggunakan mesin injection molding ada beberapa pengembangan sistem, yaitu sistem mini runner dan sistem hot runner. Yang masing-masing memiliki nilai lebih dari sistem yang sebelumnya. Pada penelitian ini, penulis mempelajari data-data hasil kuesioner seorang responden ahli dan kemudian dianalisis dengan metode Analytic Hierarchy Process (AHP) untuk mendapatkan keputusan dalam menentukansistem mold pada MH14-024 Bobbin Horn. Hasil dari semua perhitungan dibuat rangkuman dan dievaluasi sehingga mendapatkan nilai prioritas alternatif tertinggi sebesar 0.6648 untuk sistem hot runner yang dipilih sebagai keputusan yang akan diambil untuk pembuatan mold MH14-024 Bobbin Horn. Kata Kunci : MH14-024 Bobbin Horn, Injection molding, AHP, Kriteria, Alternatif.

PERBANDINGAN SIFAT FISIKA AIR SUNGAI CISADANE PADA TATA GUNA LAHAN YANG BERBEDA Desy Rosarina; Ellysa kusuma Laksanawati
Jurnal Redoks Vol 4, No 2 (2019): REDOKS JULI - DESEMBER
Publisher : Universitass PGRI Palembang

AbstrakPenelitian yang mengkaji kualitas fisika air sungai Cisadane di Kota Tangerang telah dilakukan dari bulan April hingga Juni 2019, bertujuan untuk membandingkan kualitas air sungai Cisadane melalui sifat fisikanya pada tata guna lahan yang berbeda. Penelitian menggunakan metode survei. Penentuan stasiun dilakukan secara purposive sampling, pada tata guna lahan yang berbeda. Tata guna lahan yang diteliti adalah kawasan penangkapan ikan, kawasan pemukiman dan kawasan pabrik.Titik pengambilan sampel untuk area perikanan dan area perumahan berada di Karawaci Hilir (stasiun 1), Babakan (stasiun 2) dan Sukajadi (stasiun 3). Titik pengambilan sampel area pabrik adalah di sekitar pabrik tahu (stasiun 1), pabrik kertas (stasiun 2) dan pabrik minyak kelapa sawit (stasiun 3) semuanya di Karawaci Hilir. Data diukur secara insitu dan di laboratorium yaitu suhu, TDS, warna, bau dan kecerahan.Hasil penelitian menunjukkan bahwa kualitas air di kawasan tangkapan nelayan dan perumahan masih memenuhi baku mutu air. TDS, warna dan kekeruhan tidak memenuhi baku mutu air pada kawasan pabrik. Secara umum, kualitas air sungai Cisadane di kawasan pabrik perlu penanganan khusus untuk mencegah pencemaran lingkungan yang berbahaya bagi ekosistem perairan.Kata Kunci : kualitas air,sifat fisika, pencemaran, sungai Cisadane

IMPACT OF ILLEGAL GOLD MINING IN JAMBI, INDONESIA Yudha Gusti Wibowo; Bimastyaji Surya Ramadan; Anis Tatik Maryani; Desy Rosarina; La Ode Arkham
Indonesian Mining Journal Vol 25, No 1 (2022): INDONESIAN MINING JOURNAL, Vol. 25 No. 1, April 2022
Publisher : Puslitbang tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol25.No1.2022.1271

Illegal gold mining caused various environmental damages in the world. Indonesia is one of the countries with abundant mineral reserves, especially Jambi Province. Jambi has much of natural resources, such as coal and gold. Unfortunately, the management of these natural resources has not been appropriately managed, which has resulted in much illegal gold mining. Illegal mining activities have caused environmental damage, mainly decreased water quality and changed landscapes. This paper explains the illegal mining activities at Jambi Province, including its history, socio-economic and environmental impacts, as well as recent technologies to reduce the environmental damage. Quantitative and qualitative methods were used in this research, including interviews, questionnaires, and laboratory measurements. The results showed that the people of Sarolangun, Bungo, and Tebo were aware that their illegal gold mining activities caused environmental damage. However, economic conditions and insufficient employment opportunities made unlawful gold miners have no other choice. Illegal gold mining activities have also shifted people's livelihoods who previously worked as farmers.

A Brief of Water and Soil Pollution Management (Recent Trend and Economic Perspective) Muhammad Safri; Nurhayani Nurhayani; Desy Rosarina
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 18, No 2 (2021): July 2021
Publisher : Universitas Diponegoro

Soil and water pollution are the most crucial issues in the world. Various reports have informed that pollution has had long-term adverse effects on environmental sustainability and human health. Several methods have been reported to be effective in reducing pollutant parameters in water and soil. The methods often used in water and soil remediation are bioremediation (land-vetting, bio-cell. Bio cell, Phytoremediation, Land venting, Composite, Bio venting, Bio slurry), Adsorption, Pretreatment (Ultrasonic), Microwave, Electrokinetic disintegration, High-Pressure Homogenization/HPH, Thermal Hydrolysis, Acid hydrolysis (HCl, H2SO4, H3PO4, and HNO3), Ozonation, Fenton Oxidation, Fe (II) -activated persulfate, Protease, amylase, lipase. This paper will explain water and soil pollution and the methods used to overcome them. Information collection is carried out using secondary data; internationally reputable journals and accredited national journals are used to obtain information about the effectiveness and costs incurred. This paper will provide a holistic comparison of prices, effectiveness, and information on various remediating water and soil pollution methods around the world. Based on the NPV and IRR analysis, the water treatment method using the adsorption method is an economically feasible method with an IRR value of 51%.

Analysis of Chemical Properties and Heavy Metals from Cisadane River, Tangerang, Indonesia Desy Rosarina; Ellysa Kusuma Laksanawati; Dewi Rosanti
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 18, No 1 (2021): March 2021
Publisher : Universitas Diponegoro

This paper explained heavy metals and chemical properties from the Cisadane River in Tangerang City. A survey method was used to determine the place for sampling the test material. Water measurement is carried out in situ and laboratory tests. Data retrieval was done by purposive sampling determining three observation stations, namely in the Taman Gajah Tunggal park area (station1), Babakan Cikokol residential area (station 2), and Karawaci paper mill area (station 3). The analysis was carried out exactly using analysis. Namely, analysis carried out in the laboratory. The parameters observed were COD, phosphate, DO, BOD, pH. Results of this study informed the water quality in the Cisadane City river did not meet Class II Water Quality Standards based on Government Regulation Number 82, the year 2001. The COD content only meets class II water quality standards at stations 1 and 3. BOD and phosphate content is high and exceeds class II water quality standards. Heavy metal content still meets the water quality standard threshold with a value of Cd less than 0.01 mg/L, Cu less than 0.02 mg/L, Pb less than 0.03mg/L, and Cr less than 0.05mg/L. Zn content exceeds the water quality standard threshold at station three and meets water quality standards at stations 1 and 2 with a value of less than 0.05mg/L.

Microplastic in Marine Environment and Its Impact Yudha Gusti Wibowo; Anis Tatik Maryani; Dewi Rosanti; Desy Rosarina
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 16 No. 1 (2019): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v16i1.2884

This articleÂ was the result of Â a research of literature study sources and impact of microplastic in the marine environment. Plastic debris could make microplasric caused by ultraviolet and give some negative impact for marine environment. Â Plastic debris in marine environment has come from industrial and fishing activities (human activities). All of marine environment in the world has contaminated by microplastic, microplastic will give negative impact for marine biota, recent study inform that turtle and fish have high microplastic content in both them.plastics industries should take responsibility for the end-of-life oftheir products by introducing plastic recycling or upgrading programmers.

PERBANDINGAN SIFAT KIMIA AIR SUNGAI CISADANE PADA TATA GUNA LAHAN YANG BERBEDA Desy Rosarina; Ellysa Kusuma Laksanawati
Prosiding Simposium Nasional Multidisiplin (SinaMu) Vol 1 (2019): Simposium Nasional Multidisiplin (SinaMu)
Publisher : Universitas Muhammadiyah Tangerang

The study that examined the analysis of the chemical properties of the Cisadane River in Tangerang City was carried out from April to June 2019, to compare the water quality of the Cisadane river through chemical properties in three types of land use. The study used a survey method by determining the sampling of the test material and measuring water quality carried out by purposive sampling, adjusted for the sinking of the land. Sampling points for fisheries area and housing areas are in Karawaci Hilir (station 1), Babakan (station 2) and Sukajadi (station 3). The sampling point of the factory area is around the tofu mill (station 1), the paper mill (station 2) and the palm oil mill (station 3) all in Karawaci Hilir. Data analysis in the laboratory includes DO, COD, BOD and PO4. The results showed that water quality in the catchment area of fishermen had DO, BOD, COD and PO4 values that met water quality standards, except at station 3 which had very high BOD and COD values, presumably due to disposal of construction waste and household waste. For residential areas, only high BOD content exceeds the water quality standard. Whereas in the factory area, low DO levels indicate that it is not feasible for aquatic biota life. The BOD content is high at all stations, the COD content is very high only at station 2, which is indicated by the large amount of water hyacinth that grows and a very strong odor. In general, the water quality of the Cisadane River in three types of land use needs special handling to prevent environmental pollution.Keywords: water quality standards, water quality, Cisadane River, chemical properties, land use

Co-Authors Anis Tatik Maryani Dewi Rosanti Eko Hariyanto Johan Candra Dinata La Ode Arkham Laksanawati, Ellysa kusuma Muhammad Safri Nurhayani Nurhayani Ramadan, Bimastyaji Surya Rosanti, Dewi Sri Lestari Wibowo, Yudha Gusti

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