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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
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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.
Green Building Assessment of Cilacap State Polytechnic: Building A Vicky Prasetia; Theresia Evila Purwanti Sri Rahayu; Roy Aries Permana Tarigan
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 19, No 2 (2022): July 2022
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1035.069 KB) | DOI: 10.14710/presipitasi.v19i2.290-302

Abstract

Buildings to achieve sustainable development must meet environmental criteria. This environmentally friendly building design is often referred to as a green building. The Green Building concept aims to reduce the negative impact on the environment from the construction and utilization of buildings. This study will discuss the criteria and requirements that must be met by company buildings to be categorized as Green Buildings according to the Green Building Council Indonesia (GBCI) and obtain a Greenship certificate, as well as any components at the construction and maintenance stage that affect the fulfillment of these requirements. This study uses a quantitative method by the green ship standard version 1.1. The greens criteria assessment in Building A resulted in 51 points. The results of this assessment explain that Building A is included in the silver category. This result explains that 44% of Building A's facilities have met the green building criteria. Upgrading from silver to gold category needs to increase 7 points by adding facilities, standard operating procedures, and policies.
Adsorpsi Gas H2S dengan Karbon Aktif dari Tempurung Buah Nipah Teraktivasi Natrium Hidroksida Dhau Aprilia Hakim; Theresia Evila Purwanti Sri Rahayu; Ayu - Pramita; Devi Fitriana
Rekayasa Hijau : Jurnal Teknologi Ramah Lingkungan Vol 6, No 1 (2022)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/jrh.v6i1.85-95

Abstract

ABSTRAK Industri pengolahan ikan memegang peranan penting dalam perekonomian Cilacap namun disisi lain industri ini juga menyumbangkan dampak negatif terhadap kualitas udara lingkungan karena menghasilkan bau yang mengganggu. Bau tersebut berasal dari limbah atau sisa pengolahan ikan yang tidak dikelola dengan baik. Salah satu gas penyebab bau tersebut adalah gas hidrogen sulfida (H2S) yang dihasilkan dari proses penguraian protein didalam limbah ikan. Limbah ikan yang dibuang begitu saja dapat menjadikan bibit penyakit bagi masyarakat yang disebabkan dari gas H2S karena terjadi proses penguraian protein didalam limbah ikan. Penelitian ini bertujuan untuk menguji kemampuan karbon aktif dari tempurung nipah dalam menjerap gas H2S yang terkandung dalam limbah ikan dalam besaran penurunan konsentrasi H2S ????Δ???????? dan dengan variabel berupa jumlah adsorben 20, 30, dan 40 gram. Gas H2S dari limbah ikan diadsorpsi menggunakan karbon aktif dari tempurung buah nipah teraktivasi NaOH dalam suatu rangkaian alat adsorpsi dengan kolom berisi karbon aktif dan dilengkapi dengan kolom larutan penjerap gas limbah ikan yakni larutan kadmium asetat di bagian sebelum dam setelah kolom adsorpsi. Penentuan konsentrasi gas H2S yang terjerap dalam karbon aktif dilakukan dengan metode titrimetri yakni titrasi iodometri pada larutan kadmium asetat. Hasil penelitian menunjukkan penurunan kadar H2S pada limbah ikan dengan jumlah adsorben 20, 30, dan 40 gram masing-masing adalah 33,497 ppm (71,15%), 33,452 ppm (71,05%), dan 34,381 ppm (73,03%). ABSTRACTThe fish processing industry plays an important role in the Cilacap economy, but on the other hand this also contributes negatively to environmental air quality because it produces a disturbing odor. The smell comes from waste or fish processing residue that is not managed properly. One of the gases that causes the odor is hydrogen sulfide (H2S) gas which is produced from protein decomposition process in fish waste. Fish waste that is thrown away can cause disease for the community caused by H2S gas because there is a process of protein decomposition in fish waste. This study aims to test the ability of activated carbon from nipah shells to absorb H2S gas contained in fish waste in the parameter amount of decreasing H2S concentration (ΔC) and with variables amount of adsorbent which are 20, 30, and 40 grams. H2S gas from fish waste is adsorbed using activated carbon from NaOH activated nipah shell in a series of adsorption devices with a column containing activated carbon and equipped with a column of fish waste gas absorbing solution, namely cadmium acetate solution in the section before and after the adsorption column. Determination of the concentration of H2S gas adsorbed in activated carbon was by the titrimetric method, namely iodometric titration in cadmium acetate solution. The results showed a decrease in H2S levels in fish waste with adsorbents of 20, 30, and 40 grams respectively 33,497 ppm (71.15%), 33,452 ppm (71.05%), and 34.381 ppm (73.03%) .
Sintesis Selulosa Asetat dari Tanaman Lidah Mertua (Sansevieria trifasciata) sebagai Membran Pereduksi CO (Karbon Monoksida) pada Asap Rokok Venesa Thalia Putri; Ayu Pramita; Theresia Evila Purwanti Sri Rahayu
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.v5i3.281-290

Abstract

ABSTRAKPenelitian ini bertujuan untuk mengetahui proses pembuatann membran selulosa dari tanaman Lidah mertua (Sansevieria trifasciata) yang mampu menurunkan kadar gas CO (karbon monoksida). Terdapat beberapa tahapan diantaranya persiapan alat dan bahan; proses ekstraksi yang terdiri dari delignifikasi dan bleaching; proses sintesis yang terdiri dari swelling-up, asetilasi, dan hidrolisis; uji kadar asetil selulosa; pembuatan membran selulosa, serta tahap pengujian dan analisis data yang dilakukan secara kuantitatif dan instrumentasi. Hasil penelitian ini adalah lidah mertua dapat diolah menjadi filter berbentuk membran yang mampu mereduksi karbon monoksida melalui proses sintesis selulosa asetat. Efektivitas membran selulosa Sansevieria trifasciata dalam menurunkan kandungan karbon monoksida pada rokok yang dibakar selama 5 menit adalah sebesar 70% ketika berada di dalam ruangan dan 87% ketika berada di luar ruangan. Pembuatan membran harus dilakukan dengan mengamati jenis bahan, kondisi CH3COOH, perlakuan setelah asetilasi, suhu oven, kadar asetil, dan homogenitas.Kata kunci: efektivitas, karbon monoksida, Lidah mertua, membran selulosa, merokok.ABSTRACTThis study aims to determine the process of making cellulose membranes from the mother-in-law's tongue plant (Sansevieria trifasciata) which is able to reduce CO (carbon monoxide) gas levels. There are several stages including the preparation of tools and materials; extraction process consisting of delignification and bleaching; synthesis process consisting of swelling-up, acetylation, and hydrolysis; test for acetyl cellulose content; manufacture of cellulose membranes, as well as the stages of testing and data analysis carried out quantitatively and instrumentation. The result of this research is that mother-in-law's tongue can be processed into a membrane-shaped filter that is able to reduce carbon monoxide through the synthesis of cellulose acetate. The effectiveness of Sansevieria trifasciata cellulose membrane in reducing the carbon monoxide content in cigarettes burned for 5 minutes was 70% when indoors and 87% when outdoors. The manufacture of membranes must be carried out by observing the type of material, CH3COOH conditions, treatment after acetylation, oven temperature, acetyl content, and homogeneity.Keywords: carbon monoxide, cellulose membrane, effectiveness, Sansevieria trifasciata, smoking.
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.
Pengolahan Limbah Tempurung Kemiri Sebagai Adsorben Senyawa Etilen Dengan Penambahan Kalium Permanganat (KMnO4) Harits Fadhillah Immaduddin; Shafwan Amrullah; Nurkholis; Theresia Evila Purwanti Sri Rahayu
Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Vol. 3 No. 1 (2021): JPPL, Maret 2021
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jppl.v3i1.581

Abstract

Candlenut (Aleurites mollucana) is one of the biggest potentials, especially in Sumbawa Regency. Apart from being a spice, Candlenut also produces waste in the form of shells with a very large carbon content. So that in this study, the use of candlenut shells as adsorbent was carried out using potassium permanganate or KMnO4. The way it works in this research is by doing a charcoal process on the hazelnut shell waste as the carrying substance. Basically, there are 3 stages in this research, including the carbonization of candlenut shells so that they become charcoal using a drum furnace that has been designed by yourself. Subsequently, the composite beads were sieved by using a 100 mesh sieve. Then KMnO4 is added to the mashed charcoal. The variations in the weight of KMnO4 used are 15 grams, 30 grams, and 45 grams. At the test stage, it was carried out by testing the chemical characteristics of the water content, ash content, and analysis of the best samples. At the end of the study, physical and chemical tests were also carried out on composite beads. The results showed that the best water and ash content was found in the amount of addition of KMnO4 compound at 15 grams, namely 7.33% and 7%, respectively. These results indicate that composite bead products have met the SNI 06–3730-1995 standards. For the effectiveness of absorption of ethylene compounds, the resulting composite beads required 15 grams of KMnO4 for the best absorption of 6.1% ethylene.
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