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All Journal Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Indobiosains
Andi Arif Setiawan, Andi
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Immunology & microbiology Mathematics Physics

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STUDI PEMANFAATAN LIMBAH BIOMASSA PERTANIAN SEBAGAI BIOADSORBEN UNTUK MENYERAP ION Cr Arif Setiawan, Andi
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Sainmatika Volume 10 No. 2 Desember 2013
Publisher : Faculty of Mathematics and Natural Science, Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (104.243 KB) | DOI: 10.31851/sainmatika.v10i2.402

Abstract

This study aims to assess the ability of agricultural biomass waste as material adsorbent  in the form of : rice husk, sawdust and peanut skins in total Cr ions adsorb. Ion concentration of 300 ppm Cr is used as much as 100 ml, with a contact time of 30, 60, 90, 120 and 150 minutes. The results showed the presence of intereaksi between bioadsorben with real-time contact with the Cr ions absorb 11.235 F count> F table 2.27 5%. Rice husk has the largest absorption than powders and porters gergai peanuts, respectively absorbance at 150 minutes contact time is 4.00 mg / g, 6.534 mg / g and 5.452 mg / g. Key words : ion Cr,  waste agricultur biomass, rice husk, sawdust, peanut shell
PENGARUH KONSENTRASI ION Pb2+ TERHADAP DAYA SERAP KULIT KACANG TANAH, SEKAM PADI DAN SERBUK GERGAJI Arif Setiawan, Andi
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Sainmatika Volume 10 No. 1 Juni 2013
Publisher : Faculty of Mathematics and Natural Science, Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v10i1.404

Abstract

This research study aims to assess the effect of Pb2+ ion concentration on the adsorption bioadsorben derived from waste biomass in the form of peanut shell, rice husk and sawdust. This research forms a laboratory experiment with a completely randomized design 2 factor. Factor 1: variation of Pb2+ ion concentration of 0.1, 1, 10, 100 and 1000 ppm. As well as the 2 factors: the type bioadsorben: peanut shell, rice husk and sawdust. Examination of the amount of adsorbed Pb2+ ions using Spectofotometer Atomic Absorption (AAS). Adsorption results showed that the greater the concentration of Pb2+ ions, the greater the ions absorbed by bioadsorben. Optimum absorption concentration at each bioadsorben achieved at 10 ppm, with the value of each absorption is greatest in rice husk 4.036 x 10-3 mg/g, followed by sawdust 3,810 x 10-3 mg/g and a peanut shell 2.819 x 10-3 mg/g. Analyysis of 2 factor analysis showed the presence of intereaksi between Pb 2+ ion concentration variations and types of adsorbents for Pb 2+ ions are adsorption. Key words : Consentration, ion Pb2+, peanut shell, rice husk and sawdust
Pembuatan Virgin Coconut Oil (VCO) Dengan Cara Penambahan Ragi Tempe Razelita; Marmaini, Marmaini; Arif Setiawan, Andi
Indobiosains 2024: Volume 6 No 2 Agustus 2024
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/indobiosains.v6i2.15911

Abstract

  Virgin Coconut Oil (VCO) is an innovative coconut oil that is processed without using heating or chemicals . The aim of this research is to analyze the quality of VCO by adding tempeh yeast and fermentation time to the VCO obtained. The research was carried out in March-May 2024 and quality testing was carried out at the Biology Laboratory, Faculty of Science and Technology, PGRI University, Palembang. The research method was a survey and experiment, the survey was carried out on community plantations in Kumbang Ilir Village, Kandis District, Ogan Ilir Regency. The experimental method was carried out with 16 treatments and 3 repetitions, then the data was analyzed using a Completely Randomized Design (CRD) with 2 factors, factor 1 was a variation of adding control tempe yeast starter (without yeast), 15 ml, 30 ml, 45 ml, and factor 2 was a variation fermentation time 6, 12, 18, 24 hours. The research results showed that the highest value for the amount of VCO was 104 ml in the T 4 S 3 treatment, the lowest value was in the T 1 S 0 = 15 ml treatment. The lowest VCO yield value was in the T 1 S 0 treatment = 7.5%, while the highest VCO yield value was in the T 4 S 3 treatment = 52%. The results of the organoleptic test assessed by the respondents stated that 100% of the VCO obtained was clear in color, in the taste test 80% of respondents assessed the taste as typical of coconut and 20% had no taste, and in the aroma test 64% assessed the aroma as typical of coconut, 18% assessed it as slightly rancid, and 18% rated rancid.
Co-Authors Marmaini, Marmaini Razelita