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PERANCANGAN ALAT PENGUPAS SABUT KELAPA MENGGUNAKAN METODE VDI 2221 Prima, Febri; Japri, Bryan Anthony; Kurniawan, Eddy; Lubis, Gita Suryani; Ivanto, Muhammad; Ivontianti, Wivina Diah; Oktaviani, Eva Pramuni
Inaque : Journal of Industrial and Quality Engineering Vol 9 No 2 (2021)
Publisher : Teknik Industri Unikom

The increasing demand for coconut productin in Sungai Kupah Village, Kuburaya Regency has resulted in workers needing a tool that can complete work more quickly and effiently. The tools used today stil use wedges where their use takes a long tie because the process in the process relies on human power. In additin, with non-ergonomic work positins, workers can also experience several work-related diseases such as back pain and back pain. The objecties of this research are (1) Designing an ergonomic coconut peeler according to consumer needs (2) Testig the performance of the tool (3) Testig worker fatiue before and aftr using the tool (4) Testig the level of consumer satifactin. The solutin used in this study is the VDI 2221, CVL method approach, measuring tool performance and analyzing the level of satifactin. The results obtained in this study are (1) produce a tool design according to consumer needs and have paid attntin to ergonomic aspects (2) The design of this tool produces a fairly fast stripping tie of 143 peeling fruit/hour when compared to tools using a wedge, namely 92 peeling fruit/hour (3) Worker fatiue test aftr using this tool showed 14.42 % of coconut owners, 11.20 % of worker 1 and 10.48 % of worker 2. This test resulted in CVL below 30% where workers did not experience fatiue. (4) Respondents feel comfortable with the designed tool as evidenced by the results of the 4.8 Linkert scale. Meanwhile, for ease of operatin, the result is 4.3, which means that respondents fid it easy to operate the designed tool. The conclusion in this study is that the currently designed tools are quite effctie, ergonomic and able to reduce the level of worker fatiue.

Evaluasi Waktu Start Up pada Proses Peruraian Stillage secara Anaerobik Menggunakan Reaktor Fixed Bed dengan Zeolit sebagai Media Imobilisasi Wivina Diah Ivontianti; Wiratni Budhijanto; Siti Syamsiah
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2016: Prosiding SNTKK 2016
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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

Stillage was a waste containing high organic load and thus potentially as substrate anaerobic decomposition. However the complexity of the compounds contained therein has caused the decomposition process was slow.The study was conducted to evaluate the effect of substrate concentration to performance and the start up time required in fixed bed reactor with zeolite as immobilization media for stillage decomposition. The evaluation of the fixed bed reactor performance was executed by comparing experimental data and simulation result from the mathematical modelling as the standard under ideal condition for anaerobic stillage decomposition that has been compiled. The start up phase was conducted in the circulated batch system in two cycles with different substrate concentrations. Based on the evaluation, the first cycle with the substrate concentration of 11.900 mg sCOD/L required 7-10 days to start up. If the first cycle had been conducted in more than 10 days, the condition was not optimum and it led to the death of microorganism. In the second cycle start-up phase with concentration of the substrate of 17.600 mg/L sCOD in the reactor resulted in the failure of the system due to organic shock loading. From this study, it is obtained the substrate with low concentration, 10.000 mg/L was good to start up.

Pemanfataan Cangkang Keong Susuh Kura (Sulcospira Testudinaria) Sebagai Adsorben Untuk Menyerap Logam Besi (Fe) di Perairan dengan Kajian Variasi Suhu Kalsinasi Adsorben Wivina Diah Ivontianti; Syahrul Khairi; Ria Devitasari; Yusup Yusup
Jurnal Teknologi Lingkungan Lahan Basah Vol 10, No 1 (2022): Januari 2022
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jtllb.v10i1.51649

This research is the use of snail susuh kura (Sulcospira testiudinaria) as an adsorbent to absorb ferrous metal (Fe2+) by studying the variation calcination temperatures of the adsorbent. The purpose of this study was to determine the characteristics of the adsorbent based on XRD, FTIR and GSA analysis. In this experiment also carried out temperature variations of calcination in 110 ℃ (without calcination), 500 ℃ and 900 ℃ The fixed variables in this study were the adsorbate volume of 100 mL with a concentration of 100 mg / L, stirring speed of 250 rpm and adsorption time of 30 minutes. Based on the XRD, FTIR and GSA analysis tests, after calcination at a temperature of 500 ℃, the adsorbent of tortoise snail shells showed the best adsorbent in the form of CaCO3 calcite, having O-C-O and –OH functional groups that can play a role in metal absorption in the adsorption process, and have a surface area of 28.832 m2 / g, pore volume of 0.021 cc / g, and a pore radius of 11.6 Å. Then the metal ion adsorption process was carried out with variations in calcination temperature and the best absorption of adsorbent occurs at a temperature of 500 ℃ with an efficiency value obtained of 80%. AsbtrakPenelitian ini memanfaatkan keong susuh kura (Sulcospira testiudinaria) sebagai adsorben untuk menyisihkan logam besi (Fe2+) dengan kajian variasi temperature kalsinasi adsorben. Penelitian ini untuk mengetahui karakteristik adsorben berdasarkan analisis XRD, FTIR dan GSA. Pada percobaan ini dikaji variasi temperature kalsinasi 5000C, 9000C dan tanpa kalsinasi (1100C). Penelitian ini menggunakan volume adsorbat 100 mL dengan konsentrasi 100 mg/L, kecepatan pengadukan 250 rpm dan waktu adsorpsi 30 menit sebagai variable tetap. Berdasarkan uji analisis XRD, FTIR dan GSA, adsorben cangkang keong susuh kura setelah kalsinasi pada temperatur 500 menunjukan adsorben terbaik yang berbentuk CaCO3 kalsit, memiliki gugus fungsi O-C-O dan –OH yang dapat berperan dalam penyerapan logam pada proses adsorpsi, dan memiliki luas permukaan sebesar 28,832 m2/g, volume pori 0,021 cc/g, dan radius pori 11,6 Å. kemudian dilakukan proses adsorpsi ion logam Fe dengan variasi temperatur kalsinasi dan penyerapan terbaik adsorben terjadi pada suhu 500 dengan nilai efisiensi yang diperoleh sebesar 80%.

Pengolahan Limbah Cair Lindi Menggunakan Multi Soil Layering (MSL) Bebasis Lumpur PDAM Wivina Diah Ivontianti; Eva Pramuni Oktaviani Sitanggang; Elly Sri Rezeki
Rekayasa Hijau : Jurnal Teknologi Ramah Lingkungan Vol 5, No 3 (2021)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/jrh.v5i3.228-237

ABSTRAKTelah dilakukan penelitian pengolahan lindi dari TPA Rasau Jaya Kubu Raya Kalimantan Barat dengan Multi Soil Layering (MSL). Tujuan penelitian ini adalah mengetahui pengaruh waktu tinggal terhadap kinerja MSL berbasis lumpur PDAM dalam mengolah limbah cair lindi. Penelitian ini menggunakan reaktor MSL dengan dimensi 20 x 38 x 55 cm, lapisan aerob berupa zeolit berukuran 3–5 mm dan campuran lapisan anaerob yaitu lumpur PDAM dan arang. Berdasarkan hasil pengujian konsentrasi amonia, pH, TSS dan COD sebelum pengolahan dengan MSL adalah Amonia 88 mg/l, pH 7,7 mg/l, TSS 80 mg/l, dan COD 832 mg/l. Adapun hasil dari penelitian ini didapatkan waktu tinggal optimum yaitu selama 12 jam dengan efisensi penurunan untuk masing-masing parameter pencemar yaitu: Amonia 96,59%; pH 7,5; TSS 85%, dan COD 44,83%. Hasil ini menunjukkan bahwa reaktor mampu menurunkan amonia, pH, TSS, COD.Keywords: multi soil layering, lumpur PDAM, waktu tinggal, lindiABSTRACTResearch of leachate treatment was conducted from TPA Rasau Jaya Kubu Raya West Kalimantan with Multi Soil Layering (MSL) method. Result of this research is to determine the influence of detention time on the performance of MSL based PDAM mud. The MSL reactors have dimensions of 20 x 38 x 55 cm, consist of zeolite (3-5 mm) as aerobic layers and a mixture of of PDAM mud and charcoal as anaerobic layers. Based on the test results of ammonia concentration, pH, TSS and COD before treatment are Ammonia 88 mg/l, pH 7.7 mg/l, TSS 80 mg/l, and COD 832 mg/l. The results of this study obtained optimum detention time is 12 hours with efficiency of pollutant removal for each parameter are Ammonia 96,59%; pH 7,5; TSS 85%, and COD 44,83%. These result shows that the reactor capable to decrease pollutant parameter such as ammonia, pH, TSS, and COD.Keywords: multi soil layering, PDAM-sludge, detention time, leachate

Optimasi Temperatur Pada Produksi Biogas dari Limbah Rumah Makan di Kota Pontianak Sri Rezeki; Wivina Diah Ivontianti; Aslami Khairullah
Jurnal Engine: Energi, Manufaktur, dan Material Vol 5, No 1 (2021)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v5i1.850

Limbah rumah makan dapat dijadikan bahan baku pembuatan biogas karena banyak menghasilkan material organik yang mudah untuk diurai oleh mikroorganisme seperti karbohidrat, protein, dan lemak. Dalam pembentukan biogas, suhu adalah salah satu faktor yang dapat mempengaruhi perkembangbiakkan mikroorganisme dan kecepatan reaksi. Oleh karena itu, selain untuk menganalisis besaran potensi biogas yang dapat diproduksi dari sampah organik rumah makan di Kota Pontianak, penelitian ini juga bertujuan untuk menemukan temperatur optimum pada konversi biogas dari sampah organik rumah makan di Kota Pontianak. Proses produksi biogas dilakukan menggunakan substrat limbah organik rumah makan dan EM-4 sebagai starter. Proses anaerobic digestion menggunakan reaktor batch dengan variasi temperatur: 35, 40, dan 550C. Berdasarkan penelitian yang telah dilakukan diketahui bahwa rumah makan di Kota Pontianak dapat menghasilkan sampah organik rata-rata 23,630 kg/hari yang berpotensi untuk dikonversi menjadi 7,408 m3/kg VS/hari biogas. Pada kondisi mesofilik 35°C dihasilkan 4.700 mL biogas, sedangkan pada suhu mesofilik 45°C dihasilkan sebanyak 6.900 mL biogas, dan pada suhu termofilik 55°C dihasilkan produksi biogas sebanyak 7.350 mL. Maka temperatur optimum dalam penelitian ini adalah 55°C.

Manufacture of Hand Sanitizer and Liquid Soap in Pinang Dalam and Pinang Luar Villages Eva Pramuni Oktaviani Sitanggang; Rinjani Ratih Rakasiwi; Wivina Diah Ivontianti; Lalak Tarbiyatun Nasyin Maleiva; Zainal Abidin
ABDIMAS: Jurnal Pengabdian Masyarakat Vol. 5 No. 2 (2022): ABDIMAS UMTAS: Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM Universitas Muhammadiyah Tasikmalaya

The COVID-19 pandemic has hit the whole world, including Indonesia. Many attempts had been deftly conducted by the Government as a countermeasure so that this virus does not spread further and the cases can decrease. However, among all the implemented efforts, liquid soap and hand sanitizer have not been produced. Therefore, the socialization for the production of liquid soap and hand sanitizers were carried out to the residents of Pinang Luar Village and Pinang Dalam Village, Kubu Raya Regency, West Kalimantan, as residents of remote villages who had difficulty accessing the health protocol necessaries. Through this project, the residents expectedly can have the skills to produce them independently and avoid the dangers of COVID-19. Keywords: COVID-19, hand sanitizer, liquid soap

Efektivitas Pengolahan Air Gambut Kota Pontianak dengan Adsorpsi Menggunakan Karbon Aktif dari Cangkang Buah Bintaro (Cerbera manghas) Eva Pramuni Oktaviani Sitanggang; Nurfa Kholiza; Wivina Diah Ivontianti
Envirotek : Jurnal Ilmiah Teknik Lingkungan Vol 14 No 2 (2022): Envirotek : Jurnal Ilmiah Teknik Lingkungan
Publisher : Program Studi Teknik Lingkungan, Universitas Pembangunan Nasional Veteran Jawa Timur

Keberadaan lignin (30,26%) dan selulosa (52,59%) pada cangkang buah bintaro (Cerbera manghas) dapat dimanfaatkan sebagai karbon aktif. Karbon aktif yang dihasilkan dapat diaplikasikan pada pengolahan air melalui proses adsorpsi, khususnya untuk air gambut. Karakteristik air gambut berwarna merah kecokelatan, bersifat asam, dan kadar besi serta zat organik yang tinggi. Penelitian ini bertujuan untuk mengetahui karakteristik karbon aktif (sesuai SNI 06–3730–1995) serta mengetahui pengaruh konsentrasi adsorben terhadap efektivitas pengolahan air gambut. Cangkang buah bintaro dikeringkan, dipotong, dan dikarbonisasi lalu diaktivasi menggunakan larutan H3PO4 10% selama 24 jam kemudian dianalisis karakteristik mutu karbon aktif (sesuai SNI 06–3730–1995). Selanjutnya karbon aktif diaplikasikan pada air gambut dengan meninjau parameter zat organik, kekeruhan, warna, dan besi (Fe) serta pH. Hasil penelitian menunjukkan karbon aktif yang diaktivasi menggunakan H3PO4 10% diperoleh kadar air 2,63%; kadar abu 2,88%; kadar daya serap iod 990,054 mg/g; dan daya serap metilen biru 12,446 mg/g. Variasi yang memberikan hasil pengolahan paling optimum ialah konsentrasi karbon aktif 8%, dimana menaikkan pH air gambut dari 6,0 menjadi 6,8, efektivitas penurunan konsentrasi zat warna 52,69%, konsentrasi zat organik (KMnO4) 51,65%, konsentrasi logam Fe 83%, dan konsentrasi kekeruhan 35,88%.

Efektivitas Pengolahan Air Gambut Kota Pontianak dengan Adsorpsi Menggunakan Karbon Aktif dari Cangkang Buah Bintaro (Cerbera manghas) Eva Pramuni Oktaviani Sitanggang Pramuni Oktaviani Sitanggang; Nurfa Kholiza; Wivina Diah Ivontianti
Envirotek : Jurnal Ilmiah Teknik Lingkungan Vol. 14 No. 2 (2022): Envirotek: Jurnal Ilmiah Teknik Lingkungan
Publisher : Universitas Pembangunan Nasional Veteran Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/envirotek.v14i2.253

Keberadaan lignin (30,26%) dan selulosa (52,59%) pada cangkang buah bintaro (Cerbera manghas) dapat dimanfaatkan sebagai karbon aktif. Karbon aktif yang dihasilkan dapat diaplikasikan pada pengolahan air melalui proses adsorpsi, khususnya untuk air gambut. Karakteristik air gambut berwarna merah kecokelatan, bersifat asam, dan kadar besi serta zat organik yang tinggi. Penelitian ini bertujuan untuk mengetahui karakteristik karbon aktif (sesuai SNI 06–3730–1995) serta mengetahui pengaruh konsentrasi adsorben terhadap efektivitas pengolahan air gambut. Cangkang buah bintaro dikeringkan, dipotong, dan dikarbonisasi lalu diaktivasi menggunakan larutan H3PO4 10% selama 24 jam kemudian dianalisis karakteristik mutu karbon aktif (sesuai SNI 06–3730–1995). Selanjutnya karbon aktif diaplikasikan pada air gambut dengan meninjau parameter zat organik, kekeruhan, warna, dan besi (Fe) serta pH. Hasil penelitian menunjukkan karbon aktif yang diaktivasi menggunakan H3PO4 10% diperoleh kadar air 2,63%; kadar abu 2,88%; kadar daya serap iod 990,054 mg/g; dan daya serap metilen biru 12,446 mg/g. Variasi yang memberikan hasil pengolahan paling optimum ialah konsentrasi karbon aktif 8%, dimana menaikkan pH air gambut dari 6,0 menjadi 6,8, efektivitas penurunan konsentrasi zat warna 52,69%, konsentrasi zat organik (KMnO4) 51,65%, konsentrasi logam Fe 83%, dan konsentrasi kekeruhan 35,88%.

Coffee Shop Liquid Waste Treatment System Using Portable Waste Water Treatment Plant (WWTP) Ivontianti, Wivina Diah; Rakasiwi, Rinjani Ratih; Sintanggang, Eva Pramuni Oktaviani; Syaifurrahman, Syaifurrahman; Aulia, Penny
Jurnal Teknologi Lingkungan Lahan Basah Vol 12, No 1 (2024): Januari 2024
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jtllb.v12i1.72534

Coffee shops produce waste that is included in the category of domestic waste in a fairly large amount. Therefore, it is necessary to carry out domestic wastewater management. One solution is the design of an integrated portable WWTP that can treat waste from coffee shop business activities. The advantages of using WWTP are that it is simple and does not require large amounts of land. The processing of this WWTP consists of filtration and precipitation. The wastewater to be filtered will be separated from the solids, after which it will be continued with stratified filtration using activated carbon. In the study, variations in flow rate were carried out to determine processing efficiency, namely variations in tap openings of 30o, 45o, and 90owith water flow rate of 200, 360, and 570 mL/s. The result of research, the portable Wastewater Treatment Plant with activated carbon filtration designed has been able to treat coffee shop liquid waste. The variation of flow rate in the processing of coffee shop liquid waste affects the processing results where the smaller the flow rate, the greater the efficiency reduction. The optimum flow rate variation in this study is 200 mL/s with a COD removal efficiency of 48.5%, TSS 72.8%, Coliform 66.6%, TDS 62.5%, and pH 6.2. The suggestion that can be given is the addition of a biological treatment system to optimize the performance of Portable WWTP.

The Effect of Variation of Palm Fronds Absorbent Concentration In Adsorption Process to Reduce Free Fatty Acid Content on Tengkawang Oil Puspita, Filda Agum; Oktaviani, Eva Pramuni; Rakasiwi, Rinjani Ratih; Ivontianti, Wivina Diah
Reaktor Volume 23 No.3 December 2023
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.23.3.92-100

Tengkawang oil that hasn’t through purification process contains free fatty acid that can affect its quality, where this essence is the polluter that must be removed because it can caused a rancid. The removal of free fatty acid content on Tengkawang oil was done through adsorption process utilizing palm fronds adsorbent by using its cellulose content. Palm fronds went through dilegnification process using 10% of NaOH, then adsorption process was conducted with adsorbent concentration variety 5, 10, 15, 20 and 25%. Adsorbent characterized by utilizing FTIR and SAA, from FTIR result shows that palm fronds contain berlignocellulose function cluster, after delignification the C=C lignin compound function cluster still can be found on FTIR result and after adsorption O-H cluster went through intensity decrement which shows that cellulose content and hydroxyl (-OH) cluster reacted with adsorbat. Furthermore, there’s absorption on C-H function cluster that indicates the existence of free fatty acid compound and other polluter that adsorbed by palm fronds adsorbent. The characteristic of palm fronds adsorbent after delignification process was conducted shows the pore size is on micropore range with surface area of 6.480 m2/g, pore volume of 0.01138 cc/g and pore radius of 12.4 Å. The result of the research shows decreasing percentage of free fatty acid, capacity value and adsorption effectiveness of Tengkawang oil that the highest is on adsorbent concentration as much as 25% with decreasing percentage of free fatty acid as much as 4.68%, adsorption capacity as much as 207.19 mg/g and adsorption effectiveness as much as 36.28%. Keywords: adsorption; delignification; free fatty acid; tengkawang oil

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