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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan CHEESA: Chemical Engineering Research Articles Jurnal Rekayasa Hijau Infotekmesin Madani : Indonesian Journal of Civil Society Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Jurnal Pengabdian kepada Masyarakat ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua Jurnal Teknik Kimia dan Lingkungan Hikmayo: Jurnal Pengabdian Masyarakat
Evila Purwanti Sri Rahayu, Theresia
Politekanik Negeri Cilacap
Religion Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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PENGARUH PERBEDAAN BANTUK BAHAN BAKU DAN SUHU GASIFIKASI AMPAS TEBU TERHADAP PRODUKSI HIDROGEN Shafwan Amrullah; Theresia Evila Purwanti Sri Rahayu
Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Vol. 1 No. 01 (2019): JPPL, September 2019
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jppl.v1i01.49

Abstract

The use of fossil fuel at this time is very disturbing survival, especially related to environmental and economic impacts. While the needs of world anergy continue to increase. The increase reached 80% until 2040. To overcome this problem, scientists have developed gasification technology that can produce fuel as a substitute for fossil fuel. Gasification from biomass can produce synthetic gas that is more environmentally friendly and renewable. so the purpose of this study was to determine the effect of different forms of raw material and temperature on hydrogen produced by the gasification process made from sugarcane bagasse. This research was conducted through a process of gasification made from bagasse biomass to produce synthetic gas that can replace fossil fuel. The type of reactor used is downdraft type reactor. This research was carried out by the gasification process using raw material in the form of sugarcane bagasse with diameters and lengths of 6 mm and 50 mm respectively and the others in the form of fibers. Gasification is also carried out with variations in temperature, namely 800, 950 and 1,050oC. After that, the synthetic gas produced is tested by Gas Chromatography on each variable so that the hydrogen content is known. The hydrogen produced is defined in the form of H2, CH4 products, and the value of hydrogen conversion efficiency. The results obtained showed an increase in H2, CH4, and hydrogen conversion efficiency with an increase in gasification temperature, both in the form of pellets and ash. As for the change in the form of raw materials from pellets to fibers, it causes a decrease in H2, CH4, and hydrogen conversion efficiency values. H2 compositions produced at temperatures of 800, 950, and 1050oC were 10.618, 12.080, 11.312% by volume and 3.025, 2.925, 3.150% by volume, respectively. CH4 composition for raw materials in the form of pellets and fibers at temperatures of 800, 950, and 1050oC were 1.040, 2.622, 2.867% by volume and 0.846, 0.856, 1.051% by volume, respectively. The value obtained is relatively very small compared to the results obtained in previous studies. The value of hydrogen conversion efficiency for raw materials in the form of pellets and fibers at 800, 950, and 1050oC are 1.62%, 3.45%, 3.91% and 1.89%, 1.92%, 2, 32%.
Potensi Penerapan Konsep Ekologi Industri Untuk Mengatasi Limbah Peternakan Dan Pertanian Kelompok Tani Shafwan Amrullah; Theresia Evila Purwanti Sri Rahayu; Cyrilla Oktaviananda
Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Vol. 2 No. 2 (2020): JPPL, September 2020
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jppl.v2i2.293

Abstract

The agriculture and livestock sector is the biggest contributor to environmental damage. Where from the total national sources of greenhouse gases, the agricultural sector accounted for 13.6%. From this data, there needs to be an appropriate design to deal with this problem. One way is to apply the concept of industrial ecology as the best solution to deal with this problem. So that in this study quantitative calculations were carried out to determine the potential application of the concept of industrial ecology in the agriculture and animal husbandry sector in the Tojang Maju 3 Farmer Group located in Masbagik District, East Lombok Regency, West Nusa Tenggara Province. The study was conducted with a quantitative calculation of waste generated by the livestock sector as well as farmer group questions, which then carried out the design process of the industrial ecological model. The results obtained the use of liquid organic fertilizer (POC) in the agricultural sector as much as 280.5 for rice, 37.4 for chilli farming, and 37.4 liters for cabbage farming and the rest as sources of economics. Whereas straw produced by rice farming (57,000 kg) is used as silage in the livestock sector with a demand of 4,957.2 kg. Rice straw is also used in the chilli agriculture sector as mulch with a requirement of 1,140 kg and the rest (50,903 kg) is used as raw material for the production of synthetic gas for energy sources of farmer groups. While the rest of the chilli and cabbage agricultural products are used as raw material for biogas with a mass of around 70,300 kg which is directly utilized by the groups. For cow as much as 5,355 kg is fed to the biogas digester as biogas for the consumption of farmer groups, with a gas potential of 535.5 m3.
PENINGKATAN PEMAHAMAN MENGENAI DESAIN LABEL DAN KEMASAN PADA PRODUK OLEH-OLEH DI DESA WIDARAPAYUNG WETAN KABUPATEN CILACAP Ayu Pramita; Oman Somantri; Oto Prasadi; Theresia Evila Purwanti Sri Rahayu; Nurlinda Ayu Triwuri; Ilma Fadlilah
HIKMAYO: JURNAL PENGABDIAN MASYARAKAT AMAYO Vol 1 No 2 (2022): HIKMAYO: Jurnal Pengabdian Masyarakat
Publisher : LPPM Akademi Manajemen Administrasi Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56606/hikmayo.v1i2.77

Abstract

The number of Micro, Small and Medium Enterprises (MSMEs) in Indonesia as of September 2021 reached 64.2 million by contributing a GDP of around 61.07 percent and being able to absorb 97% of the total existing workforce, and was able to collect 60.42% of the total investment in Indonesia. This indicates that MSMEs have great potential to be developed, besides that MSMEs also contribute gross domestic product (GDP) in Indonesia, open opportunities to empower family finances, open business opportunities and absorb labor which in turn can improve the economy in Indonesia. However, the last two, the whole world has experienced economic paralysis caused by the Covid-19 pandemic outbreak, as well as what happened in Indonesia. One of them has experienced a bad impact on MSMEs/ MSEs. The product of various chips "Tunggal Makmur" is a household industry that still survives today even though with Covid-19, production has decreased by up to 50% during the Covid-19 pandemic. For the conditions mentioned above, the Cilacap State Polytechnic Lecturer intends to carry out Community Service (PKM) at the location of various chips in Widarapayung Wetan village, Cilacap Regency. Community service aims to provide information and knowledge coaching to increase understanding of the important role of business in packaging various chips to attract buyers. The method used in this activity is by surveying methods and directly involving spaciousness to conduct coaching and conducting questions and answers with participants. What is expected by guiding to increase understanding of information and knowledge and socialization is to be able to increase sales by providing attractive packaging and labels. The output will be produced in the form of videos and journals.
Karakteristik Asap Cair dari Kulit Buah Nipah (Nypa fruticans) dan Potensinya Sebagai Antibakteri Staphylococcus aureus Mardiyana; Evila Purwanti Sri Rahayu, Theresia; Prasetya, Vicky
ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua Vol 6 No 2 (2023): ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua Volume 6 No. 2 Edisi Desember
Publisher : Cenderawasih University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/acr.v6i2.3492

Abstract

Skin of Nipah fruit (Nypa fruticans) contains cellulose, hemicellulose and lignin compounds, so it has the potential to be used as raw material for making liquid smoke. The urgency of this research is that until now the use of palm fruit skin to make liquid smoke is still very rare or non-existent. This research aims to characterize the contents of liquid smoke from Nipah fruit skin and determine its potential as an antibacterial against Staphylococcus aureus bacteria. The research stages were divided into 3 stages, namely the liquid smoke production stage, the liquid smoke characterization stage and its antibacterial potential, and the data processing stage. The data obtained was analyzed comparatively descriptively. The research results showed that the compounds contained in liquid smoke included total acids (as acetic acid), total phenolics and carbonyls. With the compounds contained and its acidic pH value, liquid smoke from Nipah fruit peel (Nypa fruticans) has very strong antibacterial capabilities at a concentration of 100%. Thus, this liquid smoke has the potential to be used as an antibacterial agent against Staphylococcus aureus bacteria
Kinetics of Urea Desorption off Sulfuric Acid Treated Carbon as Slow Release Fertilizer Rahayu, Theresia Evila Purwanti Sri; Amrullah, Shafwan
Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Vol. 1 No. 01 (2019): JPPL, September 2019
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jppl.v1i01.44

Abstract

Urea is an important nitrogen source for plant but the price of urea fertilizer is relatively high. Urea uptake from urea manufacture waste water and its application as fertilizer is of high interest. The purpose of this study is to find out desorption ability of urea adsorbed porous carbon to be applied as fertilizer. Theoritically, urea released from porous carbon to environment has slower rate of mass transfer compare to conventional urea fertilizer because urea molecules in porous carbon has to pass through pores of carbon during its movement out of carbon. The porous carbon as adsorbent was made from coconut shell by pyrolysis, followed by sulfuric acid oxidation treatment Oxidation treatment carried out to extent adsorption capacity as well as to give additional sulfur nutrient when applied as fertilizer. Oxidation of carbon surface was performed using sulfuric acid (50%w) to soak porous carbon followed by heating at 90oC temperature for 2 hours. Desorption was conducted by placing porous carbon into beaker contain water and the raising of urea concentration in water recorded after 3,5,10, 30, and 60 minutes. Results reveal that the value of mass transfer coefficient (kc) and effective diffusivity (De) of urea desorption from porous carbon are 0,0293 – 0,0743 cm/s and 8 x 10-10 – 5 x 10-9 cm2/s with initial concentration of urea 1000, 2000, and 4000 mg/L. Release rate of urea from porous carbon and urea prill are 0,07 ppm/s and 1,23 ppm/s. Slower release rate of urea off porous carbon than urea prill shows the promising of urea recovery using porous carbon as slow release fertilizer.
Effect of Presence of Ammonia in Aqueous Solution on Urea Adsorption Capacity Using Porous Carbon Prasetyo, Imam; Rahayu, Theresia Evila Purwanti Sri; Ariyanto, Teguh
Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Vol. 1 No. 01 (2019): JPPL, September 2019
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jppl.v1i01.47

Abstract

Urea is the main source of nitrogen for plants. Conventional urea fertilizer is made by reacting ammonia and carbon dioxide. Wastewater produced by urea fertilizer plants usually contains urea and ammonia in high concentrations. In each m3 of wastewater urea content can reach 650 - 4000 ppm and ammonia amounting to 100 - 1300 ppm. The disposal of wastewater that still contains urea and ammonia with high levels can cause eutrophication in waters which is very detrimental to aquatic organisms. The uptake of urea in the urea fertilizer plant wastewater is an interesting study because it can provide a double benefit of reducing the concentration of urea in wastewater so that it can meet environmental quality standards that are environmentally friendly and obtain cheap urea fertilizer for plants. This study aims to determine the adsorption capacity of urea with porous carbon if there is ammonia in the liquid. Porous carbon is made from pyrolysis of coconut shell which is oxidized with sulfuric acid. The oxidation process is carried out by heating porous carbon which is immersed in a 50% w/w sulfuric acid solution at 90oC for 2 hours. The adsorption process is carried out at room temperature with an initial concentration of urea between 500 - 8000 ppm in a solution of urea-ammonia as a simulated liquid. The results showed that the urea adsorption capacity increased significantly in urea-ammonia solution compared to urea solution with an increase of 41%. The capacity of urea adsorption in urea-ammonia solution is 27 - 444 mg urea / g carbon.
Penjerapan Urea dengan Karbon Aktif dari Kayu Bakar Rahayu, Theresia Evila Purwanti Sri; Amrullah, Shafwan
Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Vol. 2 No. 2 (2020): JPPL, September 2020
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jppl.v2i2.344

Abstract

Activated carbon is a universal adsorbent possessing extensive function in human life. Adsorbent has been used in waste effluent treatment to adsorb variety substances mainly in the form of liquid and gas pollutants, odor adsorbent, food preservative, nutrient carrier for plant, and as fuel cell. Adsorbent is become an interest for its highly adsorption capacity due to its abundant pores on its surface resulting wide surface area, its simple manufacturing, its easy finding raw materials-even from waste material, and its relatively low cost of manufacturing. The purpose of this study is to investigate adsorption capacity and urea uptake percentage of activated carbon made from pyrolyzed firewood. The results obtained in this research are activated carbon from pyrolyzed firewood has urea adsorption capacity 0,026 mg urea/g adsorbent at urea concentration of 500 mg/L as high as 479 mg urea/g adsorbent at urea concentration of 50000 mg/L and urea uptake percentage 8,8 % v/v. This result shows that activated carbon from pyrolyzed firewood has capability to adsorb urea molecules form aqueous solution and therefore pyrolyzed firewood can be an alternative of low cost adsorbent for treating wastewater containing urea.
Synthesis of KAl(SO4)2 Solid Coagulants from Used Pots and Beverage Cans Mustikarini, Nanda; Fadlilah, Ilma; Rahayu, Theresia Evila Purwanti Sri
CHEESA: Chemical Engineering Research Articles Vol. 7 No. 2 (2024): In Progress
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v7i2.17766.84-89

Abstract

Used pots and beverage cans are good sources of aluminum-rich raw materials for the synthesis of potassium aluminum sulfate (KAl(SO4)2), a solid coagulant. The synthesis process includes preparation, dissolution, extraction, sedimentation, and drying. Therefore, this research aimed to determine the characteristics of KAl(SO4)2 synthesized from aluminum pots and beverage cans waste, adjusted to the quality requirements of commercial KAl(SO4)2 according to SNI 06-2102-1991 standard. The materials used were aluminum pots, as well as a mixture of pots and beverage cans, with varying concentrations of 20%, 30%, and 40% KOH solvent. The synthesis results, characterized by XRF (X-ray fluorescence), showed an Al content of 0.001-3%. In addition, the results of the data analysis, adapted to SNI 06-2102-1991 standard for potassium aluminum sulfate, indicated that the synthesis met the required parameters for water-insoluble parts, Fe, Pb, and As, and Al2SO3, which was close to the quality requirements.
PELATIHAN PEMBUATAN BIOBRIKET DARI LIMBAH KERAJINAN BAMBU SEBAGAI BAHAN BAKAR ALTERNATIF DI DESA BANJARWARU NUSAWUNGU Nurlinda Ayu Triwuri; Oto Prasadi; Rosita Dwityaningsih; Mardiyana, Mardiyana; Murni Handayani; Lutfi Syafirullah; Theresia Evila Purwanti Sri Rahayu
J-ABDI: Jurnal Pengabdian kepada Masyarakat Vol. 4 No. 10: Maret 2025
Publisher : Bajang Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53625/jabdi.v4i10.9919

Abstract

Kecamatan Nusawungu tepatnya di desa Banjarwaru merupakan sentra perajin anyaman bambu menjadi barang yang bervariasi untuk memenuhi kebutuhan rumah tangga. Hasil produk bambu ini penjualannya sudah sampai ke berbagai daerah bahkan ke manca negara. Seiring dengan permintaan pangsa pasar yang meningkat sehingga meningkat pula limbah bambu yang dihasilkan dari perajin bambu. Selama ini, limbah bambu tersebut belum digunakan untuk menjadi produk lain yang memiliki manfaat lebih baik, padahal limbah bambu masih memiliki potensi yang besar untuk menjadi produk yang lebih bernilai jual. Program Pengabdian kepada Masyarakat ini memberikan solusi dalam pemanfaatan limbah bambu menjadi briket bambu yang minim asap polutan udara. Pelaksanaan kegiatan Pengabdian kepada Masyarakat ini melalui 3 tahapan yaitu tahapan survei lokasi dan identifikasi kebutuhan masyarakat, tahapan pelaksanaan program Pengabdian kepada Masyarakat , tahapan pendampingan, monitoring dan evaluasi kegiatan. Hasil dari kegiatan ini yaitu masyarakat mampu memahami pengelolaan limbah secara benar dan tepat yaitu menjadi produk briket.
Kinetics of Urea Desorption off Sulfuric Acid Treated Carbon as Slow Release Fertilizer Rahayu, Theresia Evila Purwanti Sri; Amrullah, Shafwan
Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Vol. 1 No. 01 (2019): JPPL, September 2019
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M), Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jppl.v1i01.44

Abstract

Urea is an important nitrogen source for plant but the price of urea fertilizer is relatively high. Urea uptake from urea manufacture waste water and its application as fertilizer is of high interest. The purpose of this study is to find out desorption ability of urea adsorbed porous carbon to be applied as fertilizer. Theoritically, urea released from porous carbon to environment has slower rate of mass transfer compare to conventional urea fertilizer because urea molecules in porous carbon has to pass through pores of carbon during its movement out of carbon. The porous carbon as adsorbent was made from coconut shell by pyrolysis, followed by sulfuric acid oxidation treatment Oxidation treatment carried out to extent adsorption capacity as well as to give additional sulfur nutrient when applied as fertilizer. Oxidation of carbon surface was performed using sulfuric acid (50%w) to soak porous carbon followed by heating at 90oC temperature for 2 hours. Desorption was conducted by placing porous carbon into beaker contain water and the raising of urea concentration in water recorded after 3,5,10, 30, and 60 minutes. Results reveal that the value of mass transfer coefficient (kc) and effective diffusivity (De) of urea desorption from porous carbon are 0,0293 – 0,0743 cm/s and 8 x 10-10 – 5 x 10-9 cm2/s with initial concentration of urea 1000, 2000, and 4000 mg/L. Release rate of urea from porous carbon and urea prill are 0,07 ppm/s and 1,23 ppm/s. Slower release rate of urea off porous carbon than urea prill shows the promising of urea recovery using porous carbon as slow release fertilizer.
Co-Authors Amrullah, Shafwan Ayu - Pramita Ayu Pramita Cyrilla Oktaviananda Devi Fitriana Dhau Aprilia Hakim Dwityaningsih, Rosita Fadlilah, Ilma Harits Fadhillah Immaduddin Imam Prasetyo Khoeruddin Witriansyah Lutfi Syafirullah Mardiyana Mardiyana Mardiyana Mardiyana Mohammad Nurhilal Mohammad Nurhilal Murni Handayani Murni Handayani Mustikarini, Nanda Nur Sabila, Ayu Nurkholis Nurlinda Ayu Triwuri Nurlinda Ayu Triwuri Oman Somantri Oto Prasadi Oto Prasadi Prasadi, Oto Prasetya, Vicky Radhi Ariawan Rosita Dwityaningsih Rosita Dwityaningsih Roy Aries Permana Tarigan Teguh Ariyanto Ulikaryani, Ulikaryani Venesa Thalia Putri Vicky Prasetia