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All Journal Info-Teknik Share : Journal of Service Learning Jurnal Rekayasa Hijau Infotekmesin Bubungan Tinggi: Jurnal Pengabdian Masyarakat Madani : Indonesian Journal of Civil Society Jurnal Abdimas Sangkabira Jurnal Pengabdian Barelang Journal of Science and Social Development
Rosita Dwityaningsih
Politeknik Negeri Cilacap
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Social Sciences Other

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STATUS MUTU DAERAH PENAMBANGAN PASIR DI PERAIRAN SUNGAI SERAYU DENGAN MENGGUNAKAN METODE STORET Nurlinda Ayu Triwuri; Murni Handayani; Rosita Dwityaningsih
INFO-TEKNIK Vol 19, No 2 (2018): INFOTEKNIK VOL. 19 NO. 2 DESEMBER 2018
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jit.v19i2.150

Abstract

The quality of river water is strongly related to human activities in it. Changesin the condition of water quality in the river flow are the effects of the dischargefrom existing land use. One of them is sand mining activities along the SerayuRiver, especially around Tumiyang, Kebasen, Banyumas Regency. Activitiesfrom sand mining will cause a decrease in river water quality. From this activity,it is necessary to study the status of water quality using the STORET method todetermine the quality of river water so that the river can be utilized in accordancewith the applicable designation.The STORET method is one method for determining water quality data withwater quality standards in accordance with the appointment of Minister ofEnvironment Decree No.115 2003. This research is a quantitative descriptivestudy to determine the water quality of the Serayu river in the sand of miningareas precisely in Banyumas Regency. The parameters measured in this studywere measurements of Total Disolved Solid (TDS), temperature, pH, andElectrical Conductivity. Determining the location of taking water using apurposive sampling method.Based on the results of data analysis using the Storet method and refers to thequality standards of Government Regulation No.20 of 1990 Group D. Waterquality in Serayu River has a total score of 9 after sand mining. This shows thequality status of the lightly polluted Serayu river (-1 to -10). But still in class Band the river water quality level is still in good condition. There are temperatureparameters that exceed the threshold of 25 - 32oC, but the TDS, DHL and pHparameters are still within the threshold of designation in Group D.
Pengaruh Waktu Karbonisasi Terhadap Kadar Air dan Abu Serta Kemampuan Adsorpsi Arang Tempurung Nipah Teraktivasi Asam Klorida Theresia Evila Purwanti Sri Rahayu; Rosita Dwityaningsih; Ulikaryani
Infotekmesin Vol 13 No 1 (2022): Infotekmesin: Januari, 2022
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v13i1.1027

Abstract

The Cilacap region, Central Java, Indonesia is a coastal area that is overgrown with nipa palm trees, making it one of the potential local natural resources to be exploited. Utilization of this plant has been carried out for the fields of food, energy, clothing, pharmaceuticals, and furniture, but as an anode material for lithium-ion batteries is still being researched. Studies on lithium-ion batteries in Indonesia in particular have not started long ago so that research in this field is still limited and few in number, but the development of lithium-ion batteries has become one of the national research priorities in the field of new and renewable energy sources as stated in the Indonesian national research master plan (RIRN) for the period 2017 – 2045. This study was conducted to examine the potential feasibility of activated charcoal from nipah shells as anode material for lithium-ion batteries. The feasibility test parameters studied in this study include water content, ash content and adsorption capacity stated as iodine and methylene blue number which are the basic characterizations for activated charcoal referring to SNI 06-3730-1995. The nipah shell carbonization process was carried out in the presence of oxygen at an optimized temperature of 210 oC with a 1 hour time interval variation from 3 to 8 hours, followed by an activation process using a strong acid, namely HCl with a concentration of 2 M. The experimental results showed the average value of moisture content, ash content, iodine, and methylene blue number are 12.5%, respectively; 1.75%; 2515.9161 mg/g; and 97%, all of which are above the quality standard values, so the conclusion from this study is that activated charcoal from nipah shell has basic characteristics that have the potential to be further developed, including as raw material for lithium-ion battery anodes.
Efek Temperatur Pengarangan Cangkang Kerang dan Tulang Sapi Terhadap Proximate Mohammad Nurhilal; Rosita Dwityaningsih; Theresia Evila Purwanti Sri Rahayu; Radhi Ariawan
Infotekmesin Vol 13 No 1 (2022): Infotekmesin: Januari, 2022
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v13i1.1018

Abstract

Studies on the use of animal waste as charcoal ingredient in the needs of activated charcoal material has been carried out and developed. Activated charcoal is produced through activation process at a certain temperature, condition, and time in order to creat a higher carbon content in charcoal . One of the important factors in the manufacture of activated charcoal is the temperature during the production process. The purpose of this study is to discuss the influence of temperature factor of mussel shells and beef bones on water content, ash content, volatile matter and fixed carbon during the charcoal production process. The research is carried out through experimental method of making chorcoal with temperature variations of 400, 500, 600, 700, and 800 oC. The result of the experiment shows the highest ash content and water content found respectively in beef bone charcoal of 800 oC which is 98,697 %, and of 400 oC which is 4,942 %, while the highest volatile matter and fixed carbon levels are found in clam shell charcoal of 800 oC which is 6,717 %, and of 500 oC which is 43,282 %. The result concluded that the effect of the temperature of the production process affects the water content, ash, volatile matter and fixed carbon.
Inovasi Pengolahan Limbah Cair Batik dengan IPAL Ekonomis di Desa Maos Kidul Cilacap Theresia Evila Purwanti Sri Rahayu; Rosita Dwityaningsih; Murni Handayani; Khoeruddin Witriansyah; Ayu Pramita
Madani : Indonesian Journal of Civil Society Vol. 3 No. 2 (2021): Madani, Agustus 2021
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/madani.v3i2.571

Abstract

Wastewater resulted from the batik dying process is known for its environmentally hazardous substances including hazardous natural and synthetic organic matter, suspended particles, and hazardous metal. But in the micro and medium scale batik textile business, wastewater treatment is mostly not carried because it does not give benefit for the owner. Economical wastewater treatment constructions can be an alternative for the business owner for their free operational cost. Batik wastewater treatment ought to be carried out to meet government standards but most importantly to decrease hazardous pollutant’s concentrations so it does not harm the environment. This society service project aims to provide alternatively economical wastewater treatment for batik business owners by applying simples and cheapest yet effective treatment methods to reduce pollutant concentrations in wastewater. Methods applied in this project including sedimentation, filtration, and landfill-bioremediation. The laboratorium analysis result shows that sedimentation and filtration are significantly reduced total suspended solid particles in wastewater from 2450 to 100 mg/L in line with wastewater decoloring from dark blue to clear yellow.
PELATIHAN SCREEN PRINTING PADA PEMUDA KARANG TARUNA DESA WIDARAPAYUNG WETAN KECAMATAN BINANGUN KABUPATEN CILACAP GUNA MENDUKUNG SEKTOR PEREKONOMIAN DAN PARIWISATA Mardiyana .; Murni Handayani; Rosita Dwityaningsih; Theresia E. P. S Rahayu
Share : Journal of Service Learning Vol. 8 No. 2 (2022): AUGUST 2022
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (581.532 KB) | DOI: 10.9744/share.8.2.143-149

Abstract

Desa Widarapayung Wetan merupakan salah satu desa yang memiliki potensi wisata pantai tetapi masih belum berkembang dengan optimal sehingga masyarakat sekitar Desa Widarapayung Wetan masih belum mendapatkan keuntungan dari potensi wilayahnya tersebut. Keadaan ini disebabkan potensi sumber daya manusia yang belum dapat memaksimalkan potensi wilayahnya. Karang taruna merupakan bagian dari masyarakat yang perlu ditingkatkan ketrampilannya terutama ketrampilan yang dapat mendukung sektor ekonomi dan wisata desa. Salah satu jenis pelatihan guna meningkatkan ketrampilan khusus para karang taruna yang dapat mendukung pengembangan sektor pariwisata dan perekonomian adalah pelatihan screen printing. Tujuan dari kegiatan pelatihan screen printing ini yaitu adanya peningkatan pemahaman dan ketrampilan pada para pemuda karang taruna yang ada di Desa Widara Payung Wetan. Kegiatan pelatihan dibagi menjadi 3 sesi yaitu sesi ceramah seputar teori screen printing, demonstrasi teknik screen printing sekaligus praktik langsung bagi peserta dan ceramah seputar usaha screen printing dapat mendukung perekonomian dan pariwisata desa. Berdasarkan hasil pelaksanaan pelatihan maka dapat diambil kesimpulan bahwa para pemuda yang ada di Desa Widarapayung wetan sudah dapat melakukan teknik screen printing dan dapat menghasilkan satu buah produk berupa kaos bergambar hasil screen printing. Ketrampilan yang telah dimiliki oleh pemuda ini diharapkan dapat dijadikan modal awal untuk berwirausaha dalam bidang screen printing.
Pemberdayaan Pemuda Karang Taruna Desa Widarapayung Wetan Kabupaten Cilacap melalui Pelatihan Membatik Rosita Dwityaningsih; Taufan Ratri Harjanto; Saipul Bahri; Mardiyana Mardiyana; Ulikaryani Ulikaryani
Madani : Indonesian Journal of Civil Society Vol. 4 No. 2 (2022): Madani, Agustus 2022
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/madani.v4i2.1445

Abstract

Indonesia is the owner of an inscription certificate from UNESCO regarding the recognition of “The Representative List of The Intangible Culture Heritage of Humanity” for batik. This has an impact on increasing batik production due to increasing demand both from within the country and from abroad. However, there are problems in fulfilling the demand for batik. One of the problems is a decrease of skilled workers in batik especially for “batik tulis”. One that is experiencing a shortage of skilled workers is batik production in Cilacap Regency. Therefore, we empower the youth of the Widarapayung Wetan Village youth community by providing batik training. The purpose of this activity is to increase the interest of young people to pursue batik skills as well as to fulfil batik skilled workers. The results of a survey conducted at the end of the community service activity 80% of respondents agreed and 20% strongly agreed to explore batik skills.
Analisis Proksimat dan Bilangan Yodium Sebagai Kajian Awal Aarang Tempurung Nipah Sebagai Bahan Intermediate Karbon Keras Theresia Evila Purwanti Sri Rahayu; Mohammad Nurhilal; Rosita Dwityaningsih
Rekayasa Hijau : Jurnal Teknologi Ramah Lingkungan Vol 6, No 3 (2022)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/jrh.v6i3.248-260

Abstract

ABSTRAKKarbon keras sebagai anoda baterai ion sodium memiliki kapasitas penyimpanan ion sodium yang paling tinggi diantara karbon lunak dan grafit karena struktur ikatan karbonnya paling acak sehingga akan menyediakan ruang lebih luas untuk insersi ion sodium. Material karbon keras dapat diperoleh dari biomassa yang murah dan melimpah ketersediaannya. Penelitian ini bertujuan sebagai studi pendahuluan untuk mengetahui potensi nipah sebagai bahan bahan intermediate karbon keras melalui analisis proksimat dan penentuan bilangan yodium. Tempurung nipah diarangkan pada suhu 300 oC selama 1 jam tanpa aktivasi kimia. Arang yang diperoleh dikarakterisasi kadar air, volatile matter, abu, dan fixed carbon sesuai metode ASTM D1762-84 dengan sedikit modifikasi serta penentuan bilangan yodium sesuai metode dalam SNI 06-3730-1995. Kandungan air dan zat anorganik yang cukup rendah ditunjukkan dengan kadar air dan kadar abu masing-masing 5,00% dan 9,97 %, kadar volatile matter dan fixed carbon sebesar 42,93% dan 42,11%, sedangkan bilangan yodium yang dimiliki sebesar 346,86 mg/g. ABSTRACTHard carbon as an anode of a sodium ion battery has the highest sodium ion storage capacity compared to soft carbon and graphite because it has the most random carbon bond structure providing large enough space for sodium ion insertion. Hard carbon materials can be obtained from biomass which is cheap and abundant in availability. This study aims as a preliminary study to determine the potential of nypa shell charcoal as an intermediate material for hard carbon through proximate analysis and determination of iodine numbers. Nypa shells carbonized at a temperature of 300 oC for 1 hour without chemical activation. The charcoal obtained is characterized by moisture, volatile matter, ash, and fixed carbon content according to the ASTM D1762-84 method with a slight modification while iodine number is determined according to the method in SNI 06-3730-1995. Low water content and inorganic substance content indicated by moisture and ash content of 5.00% and 9.97% respectively, volatile matter and fixed carbon are 42.93% and 42.11% while iodine number is 346.86 mg/g.
Pengaruh Variasi Konsentrasi H3PO4 Sebagai Zat Aktivator Terhadap Karakteristik Karbon Aktif dari Sekam Padi Rosita Dwityaningsih; Theresia Evila Purwanti Sri Rahayu; Murni Handayani; Mohammad Nurhilal
Infotekmesin Vol 14 No 1 (2023): Infotekmesin: Januari, 2023
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v14i1.1641

Abstract

Rice husk is an organic material that has a high lignocellulosic content so it has the potential to be turned into activated carbon. One method of making activated carbon is activation with a phosphoric acid activator (H3PO4). The purpose of this research was to study the effect of varying concentrations of H3PO4 as an activator on the characteristics of rice husk-activated carbon. The characterization refers to SNI 06-3730-1995 regarding the technical quality requirements of activated charcoal. Activation of rice husk carbon was carried out by contacting the carbon with H3PO4 for 24 hours and shaking it. The H3PO4 consisted of 3 concentration variations, namely 4M, 6M, and 8M. From the research results, the water content was 3.936%; 4.037%; 4.070%, the absorption of iodine has met the character of activated charcoal according to SNI, namely 1217.204 mg/g; 1204.255 mg/g; 1184.832 mg/g while the ash content value does not meet the SNI standard, which is still above 10%. The highest adsorption capacity and adsorption efficiency could be activated with 8M H3PO4, namely 22.42 mg/g and 89.68%. IR spectra on activated carbon with three variations of H3PO4 concentration showed the presence of aromatic C-H, C=C, and C-O anhydride functional groups.
Analisis Porositas, Tekstur, dan Morfologi Karbon Tempurung Nipah Hasil Pirolisis Suhu Tinggi Untuk Anoda Baterai Sekunder Theresia Evila Purwanti Sri Rahayu; Mohammad Nurhilal; Rosita Dwityaningsih
Infotekmesin Vol 14 No 1 (2023): Infotekmesin: Januari, 2023
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v14i1.1666

Abstract

Lithium-ion batteries are the recent main store of electrochemical energy that have been widely used for electronic equipment, electric vehicles, and also renewable energy storage such as wind and solar. Lithium-ion batteries have many electrochemical advantages but lithium availability in nature is reduced very quickly and its distribution is uneven throughout the world. Sodium is attractive as an alternative to lithium insertion for secondary batteries because of its abundant availability and oxidation reduction potential to standard hydrogen electrodes only 0.3 volts higher than lithium. This study aims to synthesize hard carbon from nipah shell biomass using thermal methods of low-temperature pyrolysis (lower than 200 oC) followed by high-temperature pyrolysis (higher than 1000 oC). Characterization is carried out by iodine number analysis to determine porosity and SEM-EDX to determine texture and morphology. The result of the analysis of carbon iodine number is 346.86 mg/g while SEM-EDX analysis showed that carbon has a structure similar to a combination of graphene and nano-tube carbon.
PENDAMPINGAN MODIFIKASI LABEL DAN BENTUK KEMASAN PADA PRODUK ANEKA KERIPIK SAYURAN DI DESA WIDARAPAYUNG WETAN KABUPATEN CILACAP Ayu Pramita; Saipul Bahri; Rosita Dwityaningsih; Siti Khuzaimah; Nuryati Nuryati; Kartini Megasari
Jurnal Abdimas Sangkabira Vol. 3 No. 2 (2023): Jurnal Abdimas Sangkabira, Juni 2023
Publisher : Program Studi Diploma III Akuntansi Fakultas Ekonomi dan Bisnis Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdimassangkabira.v3i2.561

Abstract

UKM Tunggal Makmur adalah UKM di desa Widarapayung Wetan Kabupaten Cilacap Jawa Tengah yang melakukan kegiatan usaha jenis camilan atau snack berbasis local wisdom (ciri khas daerah). UKM ini sudah berproduksi mulai tahun 2020 di saat pandemic Covid 19 melanda Indonesia. Segmen pasar masih di daerah lokal karena sistem penjualan dari mulut ke mulut saja sehingga daya beli dan omset belum meningkat signifikan. Permasalahan yang muncul dari UKM ini desain label dan kemasan yang belum marketable dan mudah dikenali konsumen sehingga Tim Pengabdi membuat program mengenai perancangan desain dan pelatihan pembuatan label, bentuk kemasan standing pouch, cetak waktu kadaluarsa menggunakan alat Continous Sealer FR 900 SV dan pengeringan kandungan minyak pada produk menggunakan Spinner 5L. Hasil dari program ini telah memberikan peningkatan dalam hal keterampilan (skill), pengetahuan dan kemandirian serta pengembangan kemampuan strategi dan inovasi usaha.
Co-Authors Ayu Pramita Kartini Megasari Khoeruddin Witriansyah Mardiyana Mardiyana Mohamad Arifin Mohammad Nurhilal Murni Handayani Nurlinda Ayu Triwuri Nuryati Nuryati Oto Prasadi Radhi Ariawan Saipul Bahri Sari, Eka Dyah Puspita Sheptia Whiting Hayati Siti Khuzaimah Taufan Ratri Harjanto Theresia E. P. S Rahayu Theresia Evila Purwanti Sri Rahayu Ulikaryani, Ulikaryani