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All Journal MAJALAH ILMIAH PEMBELAJARAN INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni Rotasi METANA Mechatronics, Electrical Power, and Vehicular Technology JURNAL TEKNIK MESIN Jurnal Bahan Alam Terbarukan Jurnal Manajemen Dayasaing Jurnal Rekayasa Mesin Indonesian Journal of Guidance and Counseling: Theory and Application Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Civil Engineering Journal CIVICUS : Pendidikan-Penelitian-Pengabdian Pendidikan Pancasila dan Kewarganegaraan Indonesia Journal of Halal Zawiyah: Jurnal Pemikiran Islam Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Jurnal Inovasi Teknik Kimia Ilmu Pendidikan International Journal of Business, Economics, and Social Development Jurnal Pengabdian dan Pengembangan Masyarakat Indonesia Journal of Governance and Social Policy JISIP UNJA (Jurnal Ilmu Sosial Ilmu Politik Universitas Jambi) IJLHE: International Journal of Language, Humanities, and Education Jurnal Profesi Insinyur Indonesia International Journal of Renewable Energy Development Jurnal Teknik Indonesia Dinamika Kerajinan dan Batik: Majalah Ilmiah
Paryanto Paryanto
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Adsorption of Sulphur in Biogas by Activated Carbon Derived From Mangrove Fruits (Rhizopora stylosa) as Solid Residue of Natural Dyes Extraction Paryanto, Paryanto; Wibowo, Wusana Agung; Saputra, Nandika Aji; Setyawati, Rosana Budi
METANA Vol 15, No 2 (2019): Desember 2019
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1187.308 KB) | DOI: 10.14710/metana.v15i2.24424

Abstract

Hydrogen sulfide (H2S) is considered as impurity in biogas. H2S could react to form sulfur dioxide (SO2) and sulfuric acid (H2SO4) during the burning process. The corrosive property of these compounds possibly cause damage the power plant system. Overcoming this problem, activated carbon impregnated with KOH has been proven to work very well in adsorbing H2S. On the other hand, mangrove fruits pulp residue from the natural dyes extraction process has not utilized. Mangrove (Rhizopora stylosa) fruits contain about 50% fixed carbon which is possibly made as activated carbon. The purposes of this research were to determine the adsorption efficiency of H2S in biogas using activated carbon derived from mangrove fruits residue and to determine isotherm equilibrium constants for adsorption. The small scale adsorption devices consist of cooler, flow stabilizer, flow regulator, flow meter and column adsorber. At certain flow rate, biogas was sampled in every 10 minutes and then analyzed using portable H2S gas analyzer.  Temperatures of biogas entered the adsorption column were in the range of 33-34oC. The optimum biogas flow rate was 4 liter per minute (lpm) for 250 grams (16 cm of height) of activated carbon. We found the adsorption efficiency was decreased by time and still reached 79.6% for 50 minutes contact time. Based on coefficient of correlation value (R2) on isotherm model, Langmuir model is more suitable for the H2S adsorption of biogas in this study. We found the Langmuir equilibrium constant k was 0.033 and maximum adsorption capacity (x/m)max was 0.284 mg/mg.
PEMBUATAN ZAT WARNA ALAMI DARI BIJI KESUMBA DALAM BENTUK KONSENTRAT TINGGI UNTUK PEWARNA MAKANAN Paryanto, Paryanto; Hermiyanto, Hermiyanto; Sanjaya, Simon Dicky Surya
METANA Vol 9, No 02 (2013): Desember 2013
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (153.517 KB) | DOI: 10.14710/metana.v9i02.7615

Abstract

Abstract The use of synthetic dyes for food in Indonesia reached 88%, this figure is quite alarming considering the health effects of synthetic dyes. So that needs to be made of natural dyes to replace the synthetic dyes. Like the natural pigments bixin of the annatto seed can give a yellow color to red. This study was conducted to determine how to produce natural pigments bixin from annatto seed using extraction process and how the optimum conditions and their application in food.Factors affecting the extraction process among other types of solvents, the size of the material to be extracted, temperature and extraction time, the ratio of material to solvent and stirring speed. Bixin will be degraded when heated and will turn into norbixin when there is excess salt sodium (Na) or potassium (K). Bixin extraction from the seeds annatto using a solvent acetone (CH3COCH3) and sodium hydroxide (NaOH) with variations in concentration, extraction temperature, stirring speed and the ratio of material to solvent. For bixin analysis using UV-Vis spectrophotometer, bixin will produce a maximum absorbance at a wavelength of 470 nm and using FTIR spectrophotometer to determine the group of bixin.The water content in the seeds kesumba is 37% and has a total of 10% bixin content. The optimum conditions of the extraction process of seed kesumba bixin is the type of solventNaOH with a concentration of 0.25 N, extraction temperature of 60 oC, 400 rpm stirring speed and weight of material to solvent ratio 1:20 by weight 2192 mg extract. Keywords: Extraction, bixin, annatto, bixa orellana, sodium hydroxide
Chemical Structure of Mangrove Species Rhizophora stylosa as Natural Dyes Paryanto, Paryanto; Pranolo, Sunu Herwi; Susanti, Ari Diana; Dewi, Kristina Ratna; Rossari, Meydiana
METANA Vol 16, No 1 (2020): Juni 2020
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (421.973 KB) | DOI: 10.14710/metana.v16i1.30417

Abstract

Textile dyes are divided into two types, natural dyes and synthetic dyes. Natural dyes commonly made from extraction. Extraction is a process in which one or more components are separated selectively from a liquid or solid mixture, the feed, by means of a liquid immiscible solvent. Extraction can be classified into two group, liquid extraction and solid-liquid extraction. Solvents that are usually used in the extraction of natural dyes are aquades and ethanol. The purpose of this research was to determine the chemical structure, especially tannin in natural dyes from mangrove species Rhizophora stylosa through several samples testing natural dyes. Rhizophora stylosa that have been extracted and evaporated will conducted several tests to obtain chemical structures in natural dyes and yield of tannin in natural dyes. Tests carried out include testing FT-IR, and HPLC. Based on FT-IR analysis, the extraction of Rhizophora stylosa containing tannin indicated by the presence of hydroxyl (O-H) in the area of 3385.36 cm-1, aromatic (C-H) in the area of 1365.53 cm-1, carbonyl (C=O) in the area 1646.36 cm-1, esters (C-O) in the area 1217.30 cm-1. While tannin content obtained from the analysis of HPLC were 6.087 ppm. 
Co-Authors Aan Ardian Abimanyu, Candra AGUS PURWANTO Alim Harun Pamungkas Alqarni, Wais Andhi Nur Rahmadi, Andhi Nur Andrian Riyadi Ardianto, Aan Ari Diana Susanti, Ari Diana Aries Susanty Azalia Kartika Suri, Azalia Kartika Azhari, Fadlan Azizah, Rifo N Baskoro, Catur Hilman Adritya Haryo Bhakti Baskoro, Sefrian Imam Berkah Fajar TK Busairi, Achmad Desy Sulistyowati, Desy Dewi, Kristina Ratna Dian Retnaningdyah, Dian Dwi Budi Santoso Dyah Kusuma Dewi Eko Riswanto, Eko F, Nur Kholis Fadillah, Nuzulul Fathika, Rahma N Febrianto Amri Ristadi Felani, Muhamad Iqbal Firdausy, Farah Mutia Gito Sugiyanto Guterres, Natalino Fonseca D.S. Hanifa, Vina Hariana, Hariana Haryanto, Rifqi Hasnan Bachtiar Hermiyanto Hermiyanto Heru Mugiarso Ilham Roy Saputro, Ilham Roy Indrawan, Harry Intan Kusumawati Jati, Andika Seto Kuncoro Joga Dharma Setiawan Laela Khasanah, Isrofiah Lega, Michael Lutfiani, Rachmi Azizah Maghfi, Risya Ulayyar Mansuri, Aly Syariati Margono Margono Maryova, Frieska Maulana, Andra Mochammad Ariyanto Mohammad Samsul Bakhri Mohammad Tauviqirrahman Munadi Munadi Munyensanga, Patrick Muslim, Zulkifli Alif Nur Cahyo Nurwijayanti Penny Rahmawaty Pranolo, Sunu Herwi Pratama, Rakha Rahmadani Prismantoko, Adi Putra, Raka Mancini Putro, Wibisono Handoko Rahmadi, Kristian Jati Rahmanta, Mujammil Asdhiyoga Ramadhan, Rifky Daffa Ratih Pujiastuti Reto Ika Sundari, Reto Ika Ridwan Afandi Roni Permana Saputra Rossari, Meydiana Rusnaldy Rusnaldy Sachrul Iswahyudi Saputra, Calvin Darma Saputra, Nandika Aji Sarfilianty Anggiani, Sarfilianty Sari Ayu Wulandari Setiawan, Muhammad Farouk SETYAWAN, YOGA Setyawati, Rosana Budi Simalango, Antonius Simon Dicky Surya Sanjaya Soleh, Mochamad Sri Hastuti Sugeng Riyanto Sukis, Muhamad Sulardjaka Sulardjaka Sumar Hadi Suryo Supriyo Supriyo Surya, Rizqi Diaz Susilo Adi Widyanto Sutrisno AB, Joko Toriq, Sulthan Totok Apriyanto, Totok Triasdian, Yayak Trismianto, Devout Prakoso Wibowo, Angga Dwi Wijayanto, Ristyan Willy Arafah Willy Arafah, Willy Wusana Agung Wibowo, Wusana Agung Xander Salahudin