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All Journal Reaktor Eksergi: Chemical Engineering Journal CHEMPUBLISH JOURNAL Konversi Info-Teknik Jurnal Teknologi Agro-Industri Makara Journal of Science

Yuli Ristianingsih

Chemical Engineering Department, Universitas Pembangunan Nasional Veteran Yogyakarta

Author-ID : 361742

Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Education Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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PENGARUH KONSENTRASI HCl DAN Ph PADA EKSTRAKSI PEKTIN DARI ALBEDO DURIAN DAN APLIKASINYA PADA PROSES PENGENTALAN KARET Yuli Ristianingsih; Iryanti Fatyasari Nata; Dian Sylvana Ansari; I Putu Andika Putra
Konversi Vol 3, No 1 (2014): April 2014
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v3i1.135

Abstrak: Durian adalah tanaman yang tahan terhadap iklim kering sehingga dapat tumbuh di daerah tropis seperti Indonesia. Albedo durian merupakan sumber pektin yang potensial karena di dalamnya terkandung senyawa pektin. Untuk menguraikan pectin dalam albedo durian dapat dilakukan dengan proses ekstraksi asam karena kemungkinan terjadinya pectin jauh lebih sedikit daripada ekstraksi basa. Pada penelitian ini akan dilakukan ekstraksi pectin dengan bahan baku albedo durian yang bertujuan untuk mengetahui pengaruh variasi kosentrasi pelarut dan PH dari albedo durian, mendapatkan kondisi operasi optimum dari ekstraksi pectin albedo durian dan membandingkan data waktu pengentalan karet dengan menambahkan pectin atau tanpa pektin. Penelitian dilakukan dengan waktu ekstraksi 60 menit dengan temperatur ekstraksi 90 0C dan massa albedo durian 20 gram. Variasi perubah yang digunakan adalah konsentrasi pelarut HCl (0,2; 025; 0,3 dan 0,35N) dan variasi PH (1,2; 2; 2,5 dan 3). Pectin yang diperoleh kemudian diaplikasikan untuk proses pengentalan karet dengan variasi pectin yang digunakan adalah sebagai berikut (1:5; 2:5; 3:5 dan 4:5). Kadar pektin yang didapat pada penelitian ini berkisar antara 3,09 g-17,91 g. Kadar metoksil yang dihasilkan dari penelitian ini adalah 2,430%-3,13%, sedangkan kadar galakturonat yang dihasilkan dalam penelitian ini adalah 67,65%-82,02% dan waktu pengentalan karet tercepat adalah 5 menit dengan rasio pectin dan karet adalah 5:5. Kata kunci : Pektin, ekstraksi asam, metoksil, galakturonat Abstract: Pectin is a complex polysaccharides compound which contained in plant cell walls. It is used in food manufacturing processes, adsorbent for waste water treatment and coagulant for rubber industry. Albedo durian was one of the potential sources of pectin, because albedo durian is consist of pectin compound. Acid extraction process was used to decompose pectin compound which contained in albedo durian. In this research, twenty grams of albedo durian was reacted with hydrochloric acid using stirred tank reactor. This process was conducted at temperature 90 0C for 1 hour in various solvent concentration and PH. The purpose of this research was to study the effect of solvent concentration and PH in pectin extraction process and the effect of adding pectin in process of latex coagulation. The result showed that the higher PH and solvent concentration, the higher yield of pectin. The maximum yield of pectin which was obtained in this research is 89.55%. The methoxyl contain and galacturonic which was obtained in this research between 2.430-3.13% and 67.65-82.02%, rescpectively. The Minimum time for latex coagulation about 5 minute using ratio pectin and latex 5:5. Keywords : Pectin, acid extraction, methoxyl, galacturonic

PENGARUH VARIASI KONSENTRASI ADSORBEN BIJI TREMBESI TERHADAP PENURUNAN KADAR LOGAM KROMIUM (Cr) TOTAL PADA LIMBAH INDUSTRI SASIRANGAN Gusti Indah Hayati; Bunga Pertiwi; Yuli Ristianingsih
Konversi Vol 5, No 2 (2016): Oktober 2016
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v5i2.4760

Abstrak- Proses pembuatan kain sasirangan menghasilkan limbah cair yang berasal dari proses pewarnaan dan pencelupan kain. Salah satu polutan yang terkandung pada limbah cair industri sasirangan adalah logam Cr. Reduksi logam Cr total limbah cair industri sasirangan dilakukan dengan proses adsorpsi menggunakan adsorben dari biji Trembesi. Tujuan penelitian ini untuk mengetahui pengaruh konsentrasi adsorben 1, 2, 3 dan 4% w/v terhadap proses reduksi logam Cr total industri sasirangan. Variasi konsentrasi adsorben yang digunakan sebesar 1 g/100 mL, 2 g/100 mL, 3 g/100 mL dan 4 g/100 mL limbah sasirangan dengan pengadukan selama 30 menit pada 100 rpm suhu 55oC dengan ukuran adsorben 250 mikron. Proses pirolisis berlangsung selama 5 jam dengan suhu operasi 450oC. Adsorben diaktifkan menggunakan HCl 0,1 N yang berlangsung selama 24 jam. Analisa yang dilakukan yaitu ICP (Inductively Coupled Plasma) untuk mengetahui kadar logam yang masih tersisa didalam limbah setelah dilakukannya proses adsorpsi. Semakin banyak jumlah adsorben yang ditambahkan maka penurunan konsentrasi logam Cr dalam air limbah semakin besar. Hasil penelitian diperoleh penurunan konsentrasi logam Cr maksimum sebesar 82,65%. Konsentrasi logam Cr mula-mula pada limbah cair kain sasirangan sebesar 2 ppm dan penurunan konsentrasi logam Cr maksimum pada penambahan adsorben 2 g sebesar 0,347 ppm. Kata kunci: biji Trembesi, logam Cr, pirolisis. Abstract- The production process of sasirangan fabric produced liquid waste from dyeing and coloring process. One of the pollutant that contained in liquid waste was chrom metal. Reduction of Cr metal from sasirangan industrial liquid waste used tamarind (trembesi) seeds as the adsorbent. The purpose of this research was to know the effect of adsorbent concentration 1; 2; 3 and 4 % w/v to reduction of Cr metal in sasirangan industry. Variation of adsorbent concentration that used 1 g/100 ml, 2 g/100 ml, 3 g/100 ml and 4 g/100 ml Sasirangan liquid waste by stirring for 30 minutes in 100 rpm at 55oC and the size of adsorbent was 250 micron. The pyrolisis process had setting at 450oC temperatures for 5 hours operation. Adsorbent was activated by HCl 0.1N for 24 hours. Chrom metal residu which contained in sasirangan waste was analyzed using ICP (inductively coupled plasma). This analysis aims to determine residual chrom metal concentration in sasirangan industries after adsorption process. The greater adsorbent was added at adsorption process, the less residual chrom metal concentration which contained in sasirngan waste. The results of this research showed that adsorbent can decrease Cr metal up to 80.65%. The initial concentration of Cr metal in sasirangan waste was 2 ppm and the decreasing of Cr metal maximum remaining was 0.347 ppm at 2 g adsorbent.Keywords: Tamarind seeds, Cr metal, pyrolisis.

PENGARUH SUHU DAN KONSENTRASI PEREKAT TERHADAP KARAKTERISTIK BRIKET BIOARANG BERBAHAN BAKU TANDAN KOSONG KELAPA SAWIT DENGAN PROSES PIROLISIS Yuli Ristianingsih; Ayuning Ulfa; Rachmi Syafitri K.S
Konversi Vol 4, No 2 (2015): Oktober 2015
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v4i2.266

Abstrak-Tandan Kosong Kelapa Sawit merupakan limbah padat hasil produksi Crude Palm Oil (CPO). Setiap 1(satu) ton tandan buah segar dihasilkan 23% limbah padat. Limbah padat ini dapat di konversi menjadi bahan bakar pengganti minyak yaitu briket. Briket bioarang adalah bahan bakar padat yang dapat digunakan sebagai bahan bakar alternatif pengganti bahan bakar yang berasal dari fosil seperti minyak dan gas. Penelitian ini bertujuan untuk mengetahui pengaruh suhu pirolisis terhadap yield bioarang yang dihasilkan dan mengetahui pengaruh konsentrasi perekat kanji (5% w/w, 10% w/w, 15% w/w) terhadap karakteristik briket hasil penelitian (kadar air, volatile matter, kadar abu, fixed carbon, nilai kalor dan laju pembakaran). Penelitian dilakukan dengan metode pirolisis yaitu proses pembakaran bahan baku dalam reaktor pirolisis dengan menggunakan suhu yang tinggi dan tanpa atau dengan sedikit oksigen. Pirolisis dilakukan selama 2,5 jam dengan variasi suhu yaitu 350°C, 400°C, 450°C dan 500°C. Arang yang dihasilkan dicampur dengan perekat sesuai variasi dan dicetak menjadi briket. Briket kemudian dianalisa kadar air, kadar abu, kadar karbon, kadar zat terbang, nilai kalor dan laju pembakaran. Briket dengan yield tertinggi terdapat pada suhu 350°C sebesar 51,53% dan yield terendah pada suhu 500°C sebesar 26,03%. Briket hasil penelitian ini telah memenuhi standar mutu briket sebagai bahan bakar dilihat dari nilai kalor. Komposisi optimal antara perekat kanji dan arang TKKS hasil pirolisis yaitu pada 5%:95% yang menghasilkan nilai kalor terbesar yaitu 6748,15kal/g. Kata kunci : Briket Bioarang, Pirolisis, Tandan Kosong Kelapa Sawit Abstract-Palm Oil Empty Fruit Bunches are solid waste from Crude Palm Oil (CPO industry). For 1 ton of fresh fruit bunches produced 23% of solid waste. This solid waste can be converted into alternative energy that called briquettes. Briquettes are solid fuel that can be used as an alternative fuel replacement for fossil fuels such as oil and gas. This study aims to determine the effect of temperature on the yield generated briquettes and the effect of stach adhesive concentration (5, 10 and 15% wt) to briquettes characteristics (moisture content, volatile matter, ash content, fixed carbon, calorific value and the rate of combustion). In this reseacrh, two kilograms of palm oil empty fruit bunches was burned using pyrolisis reactor at different temperatur (350, 400, 450 and 5000C) for 2.5 hour. Charcoal produced was mixed with an adhesive in accordance variations and molded into briquettes. Briquettes then analyzed the water content, ash content, carbon content, volatile matter content, heating value and rate of combustion. The maximum yield of briquettes which was obtained in this research is 51.53% at temperature 3500C and the lowest yield at temperature of 500 ° C by 26.03%. Briquettes results of this study have met the quality standards of fuel briquettes as seen from the heating value. Optimal adhesive composition between starch and charcoal TKKS is 5%: 95% that generates highest calorific value about 6748.15kal/ g. Keywords: Briquette Bioarang, Pyrolysis, oil palm empty bunches

THE PAPER CHARACTERISTICS FROM COMBINATION OF RICE HUSKS AND EMPTY FRUIT BUNCHES Yuli Ristianingsih; Hero Islami; Muhammad Sarwani
Konversi Vol 6, No 2 (2017): Oktober 2017
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v6i2.4759

Abstract- Rice husk and empty fruit bunches are agricultural and plantation wastes which have fiber cellulose and hemicellulose, it can be converted to pulp and paper. This research aims to study the effect of NaOH concentration (2, 4, 6 and 8% w/v) and raw material composition to pulp yield and to study characteristics of the paper combination of rice husk and empty fruit bunches using soda process based on SEM and XRD analysis. This research using soda process because it is suitable for non-wood raw materials, low cost operations and not use sulfur compounds. Dry raw materials are mixed with NaOH and digesting using autoclave (100°C, 1 atm) for 60 minutes. NaOH concentration optimum used in the pulping process a combination rice husk and empty fruit bunches (1:3, 1:2, 1:1, 2:1 and 3:1) and then cooled for 30 minutes. Pulp is bleached with NaClO 5.25% (v / v), then formed and dried as paper. The lowest pulp yield obtained in a ratio of 2: 1 is 27.6%. Based on the observation of SEM known the fiber of rice husk and empty fruit bunches is 5.88 to 9.8 μm and 8.82 to 14.71 μm, while based on XRD observations, chemical treatment can improve the characteristic of peak intensity on paper combination. The highest advances of peak intensity in the 1:3 ratio is 71.28% (cellulose I) dan 83.33% (cellulose II). Keywords: rice husk, empty fruit bunches, chemical pulping, soda process

PEMBUATAN BRIKET BIOARANG BERBAHAN BAKU SAMPAH ORGANIK DAUN KETAPANG SEBAGAI ENERGI ALTERNATIF Yuli Ristianingsih; Primata Mardina; Aditya Poetra; Marini Yosi Febrida
INFO-TEKNIK Vol 14, No 1 (2013): INFOTEKNIK VOL. 14 NO. 1 2013
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v14i1.313

Almond tree (Terminalia catappa L.) leaves waste in Southern Kalimantan region has not been used optimally. This waste has a calorific value high enough so that it can be converted into a renewable energy alternative. The One alternative energy that can be generated from the conversion of almond tree leaves waste is biocharcoal briquette. This research aims to study the effect of composition and particle size of biocharcoal briquettes on the characteristics and quality of burning biocharcoal briquettes made from almond tree leaves waste. almond tree leaves waste initially dried in the sun then performed to form charcoal carbonization process. And then Formed charcoal was filtered with a variety of particle sizes (250,355 and 500 μm) and mixed with starch adhesive mixed with a percentage weight ratio of charcoal: heavy starch adhesive 90:10% w/w. Mixture of biocharcoal briquettes are then printed using a mold manual briquettes and the results analyzed. Analysis was conducted on the analysis of moisture content, ash content, volatile content, heating value. Start up time, the length of time to ignition briquettes and burning speed. The results were showed that the resulting biocharcoal briquettes have characteristics of water content from '.'7 to 2.92%, from 39.'4 to 4'.'0% volatile content, ash content 0.22 to 0.52% and a calorific value of 574'-6308 cal / gram. As for the analysis of the combustion quality of the results were obtained startup time from 4.'3 to 4.26 min, 97-'24 min duration of combustion and burning rate of 0.''8 to 0.'60 g / min.

PENGARUH JENIS ASAM DAN SUHU EKSTRAKSI TERHADAP KARAKTERISTIK PEKTIN DARI KULIT PISANG KEPOK yuli ristianingsih; Indriana Lestari; Wibiana Wulan Nandari
Eksergi Vol 18, No 2 (2021)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v18i2.5400

Pectin is structurally and functionally the most complex polysaccharide in plant cell walls. Pectin is widely used as an adhesive and emulsifier in the food, pharmaceutical industry and also as an adsorbent in waste water treatment. This research used banana peels as a raw material. The purpose of this study was to study the effect of temperature and solvent (acetic acid and hydrochloric acid) on the characteristics of pectin (ash content, methoxyl and galacturonic content). This research was carried out in a stirred tank reactor for 90 minutes with various types of solvents (hydrochloric acid and acetic acid) and extraction temperatures (60, 70, 80 and 90) 0C. Based on the research, it was found that the optimum pectin yield with 0.25 N HCl at a temperature of 800C was 24.93%. The characteristics of pectin which include galacturonic acid, methoxyl content, ash content and equivalent weight at an extraction temperature of 800C with a concentration of 0.25 N HCl were 79,56%; 2.65; 6,72% and 3846

PENURUNAN KONSENTRASI LOGAM Pb2+ DAN Cd2+ PADA LIMBAH CAIR INDUSTRI SASIRANGAN DENGAN METODE FITOREMEDIASI Bella Santa Rossi; Paryanti Paryanti; Yuli Ristianingsih; Abubakar Tuhuloula
Jurnal Teknologi Agro-Industri Vol 1 No 1 (2014)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat, Politeknik Negeri Tanah Laut

Pewarnaan pada proses produksi kain sasirangan menghasilkan limbah yang mengandung logam berat, diantaranya adalah timbal (Pb2+) dan kadmium (Cd2+). Penelitian ini bertujuan untuk mengetahui pengaruh proses fitoremediasi terhadap konsentrasi logam Pb2+ dan Cd2+ dari limbah cair industri sasirangan di Kalimantan Selatan, serta mengetahui pertambahan berat basah eceng gondok. Eceng gondok yang sudah dibersihkan dan diaklimatisasi ditanam dalam reaktor berisi larutan limbah dengan konsentrasi 3% (v/v); 9% (v/v); dan 15% (v/v). Sampel diambil setiap 2 hari sekali sebanyak 100 ml dan dianalisis menggunakan AAS (Atomic Absorption Spectrophotometry). Hasil penelitian ini menunjukkan bahwa konsentrasi logam Pb2+ dan Cd2+ dalam limbah setelah proses fitoremediasi terjadi penurunan. Kadar Pb2+ pada konsentrasi 3% (v/v) semula 0,197 ppm menjadi 0,062 ppm, pada konsentrasi 9% (v/v) semula 0,200 ppm menjadi 0,077 ppm dan untuk 15% (v/v) adalah 0,225 ppm menjadi 0,093 ppm. Sedangkan untuk Cd2+ konsentrasi 3% (v/v) semula 0,110 ppm menjadi 0,059 ppm, konsentrasi 9% (v/v) adalah 0,127 ppm menjadi 0,045 ppm dan untuk konsentrasi 15% (v/v) semula 0,144 ppm menjadi 0,047 ppm.

Pembuatan Edible film Pati Jagung dengan Penambahan Kitosan Sisik Ikan Papuyu (Anabas testudienus) Yuli Ristianingsih; Maria Natalia
Jurnal Teknologi Agro-Industri Vol 6 No 1 (2019): Jurnal Teknologi Agro-Industri
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat, Politeknik Negeri Tanah Laut

Food packaging most used in order to keep the quality of food could be maintained to consumers. Plastic non-biogradable have weakness such as it is not degradable of environment and it is not safe to health because contain bhispenol. Edible film is solution for this problem because made of chitosan-starch. Starch is natural polymer that safe to use because easy to degradable, edible and economist. Corn starch contain high amylose content is 25%. Addition of chitosan could increase mechanical properties and barrier properties of edible film. The purpose of this research was to find out the effect of addition of chitosan on physiochemical properties edible film. Variation of chitosan used was 0,5; 1; 1,5 and 2 gram. The best result of solubility in water was addition chitosan 2 gram with value 49,74%.

Kesetimbangan Adsorbsi Zat Warna Metilen Blue dengan Adsorben Karbon Aktif Tongkol Jagung Terimpregnasi Fe2O3 Yuli Ristianingsih; Alit Istiani; Fauzan Irfandy
Jurnal Teknologi Agro-Industri Vol 7 No 1 (2020): Jurnal Teknologi Agro-Industri
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat, Politeknik Negeri Tanah Laut

Methylene blue merupakan zat warna organik yang banyak digunakan pada industri tekstil, memiliki sifat mudah larut dalam air dan berbahaya bagi kesehatan manusia. Pada penelitian ini, adsorbsi zat warna metilen blue dilakukan dengan menggunakan adsorben karbon aktif dari tongkol jagung yang terimpregnasi Fe2O3. Proses adsorbsi dijalankan pada sebuah reaktor batch selama 120 menit dengan menggunakan adsorben KAJ/Fe2O3 sebanyak 0,025 gram dan kecepatan pengadukan 150 rpm. Tujuan penelitian ini adalah untuk mempelajari pengaruh suhu (30 0C, 40 0C, 50 0C) serta variasi penambahan reagen fenton H2O2 dan tanpa penambahan H2O2 pada proses adsorbsi zat warna metilen blue. Hasil penelitian diperoleh bahwa penambahan reagen fenton (H2O2) dapat meningkatkan kapasitas adsorbsi sebesar 25,98%. Suhu optimum proses adsorbsi terjadi pada suhu 30 0C dengan kapasitas penjerapan rata-rata sebesar 71,93%. Model kesetimbangan adsorbsi yang sesuai pada penelitian ini ada isotherm Langmuir dengan nilai konstanta Langmuir (b) dan kapasitas penjerapan maksimum (qm) yang diperoleh masing-masing sebesar 0,49 dan 15,38 mg/L.

Biosorben Daun Ketapang dengan Pengaktifan Asam Sitrat sebagai Pereduksi Merkuri Yuli Ristianingsih; Muhammad Aulia Fadhil; Fariz Maulana Akbar; Annissa Millenia Ramadhani; Isna Syauqiah
Jurnal Teknologi Agro-Industri Vol 6 No 2 (2019): Jurnal Teknologi Agro-Industri
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat, Politeknik Negeri Tanah Laut

South Kalimantan has a gold mining industry that produces waste that can pollute the environment and is harmful to public health. One of the hazardous contaminants contained in the gold mining industry is mercury. This study aims to make biosorbent of ketapang leaves which will be used to reduce mercury content in gold mining waste.. The study began with washing the ketapang leaves to remove the impurities and then dried 3-4 days under the sun to reduce the water content. The next step is a simple carbonization process by using furnaces at a temperature of 300 oC for 30 minutes as the optimum operating condition so that activated carbon is formed called BDK. In the final stage, the biosorbent of ketapang leaves with 0.1 N citric acid was activated to produce biosorbent of ketapang leaves called BDK-COOH. The test results were carried out by SEM and FTIR analysis. The results of SEM analysis showed biosorbents that form large and large pores caused by carbonization and activation processes. Likewise, the results of FTIR analysis formed an active functional group to absorb heavy metals in terms of shifting absorption bands shown by FTIR. However, the adsorption capacity of biosorbent has not been determined so that further research is needed to find out.

Co-Authors Abubakar Tuhuloula Aditya Poetra Anasstasia, Titi Tiara Angraeni, Nelli Annisa Fitriani Annisa Fitriani, Annisa Annissa Millenia Ramadhani Arief Budiman Ayuning Ulfa Ayuning Ulfa, Ayuning Bella Santa Rossi Bunga Pertiwi Dian Sylvana Ansari Dian Sylvana Ansari, Dian Sylvana Fakhrizal Fakhrizal Fakhrizal Fakhrizal, Fakhrizal Fariz Maulana Akbar Fauzan Irfandy Fauzan Irfandy Fradita Wanda Sari Gusti Indah Hayati Hayati, Gusti Indah Hernadin, Ivan Aldino Hero Islami I Putu Andika Putra I Putu Andika Putra, I Putu Andika Indriana Lestari Indriana Lestari Iryanti Fatyasari Nata, Iryanti Fatyasari Islami, Hero Isna Syauqiah Istiani, Alit Lestari, Indriana Maria Natalia Maria Natalia, Maria Marini Yosi Febrida Muhammad Aulia Fadhil Muhammad Sarwani Nelli Angreani Nelli Angreani, Nelli Nurul Hidayah Paryanti Paryanti Pertiwi, Bunga Primata Mardina Rachmi Syafitri K.S Rachmi Syafitri K.S, Rachmi Rizqi Fauzi Rizqi Fauzi, Rizqi Sarwani, Muhammad Sutijan Sutijan Timotius, Daniel Wibiana Wulan Nandari

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