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All Journal Equilibrium Journal of Chemical Engineering PARADIGM : JOURNAL OF MULTIDISCIPLINARY RESEARCH AND INNOVATION
Astika, Tri
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Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Energy Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology

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ANALISIS KADAR LOGAM BERAT TIMBAL PADA GARAM KONSUMSI MENGGUNAKAN METODE SPEKTROFOTOMETRI SERAPAN ATOM (SSA) Astika, Tri
PARADIGM : Journal Of Multidisciplinary Research and Innovation Vol 1 No 02 (2023): PARADIGM : Journal Of Multidisciplinary Research and Innovation
Publisher : Pusat Studi Ekonomi Publikasi Ilmiah dan Pengembangan SDM Azramedia indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/paradigm.v1i02.758

Abstract

Iodized salt is a type of consumption salt. Consumption salt before being circulated needs to be tested first according to the quality standards of consumption salt. In this study, heavy metal lead content was tested using atomic absorption spectrophotometry (SSA) method. The purpose of this study is to determine the level of heavy metal lead in table salt based on the Indonesian National Standard (SNI). Research methods using tools used in this study are 100 ml beaker, 500 ml volumetric flask, 250 ml Erlenmeyer, 200 ml Erlenmeyer, spatula, stirring rod, PH meter, separating funnel, filter paper, spray bottle, 2 ml measuring pipette, 5 ml measuring pipette, drop pipette, Atomic Absorption Spectrophotometry (SSA). The materials used in this study are HNO3, distilled water, coarse salt, fine salt. The results of heavy metal lead levels in sample A amounted to 1.26 ppm, sample B 1.13 ppm, sample C 3.08 ppm and sample D amounted to 2.88 ppm. Based on these results, it has met the quality standards of consumption salt according to Indonesian national standards.
ANALISIS KADAR LOGAM BERAT TIMBAL PADA GARAM KONSUMSI MENGGUNAKAN METODE SPEKTROFOTOMETRI SERAPAN ATOM (SSA) Astika, Tri
PARADIGM : Journal Of Multidisciplinary Research and Innovation Vol 1 No 02 (2023): PARADIGM : Journal Of Multidisciplinary Research and Innovation
Publisher : Pusat Studi Ekonomi Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/paradigm.v1i02.758

Abstract

Iodized salt is a type of consumption salt. Consumption salt before being circulated needs to be tested first according to the quality standards of consumption salt. In this study, heavy metal lead content was tested using atomic absorption spectrophotometry (SSA) method. The purpose of this study is to determine the level of heavy metal lead in table salt based on the Indonesian National Standard (SNI). Research methods using tools used in this study are 100 ml beaker, 500 ml volumetric flask, 250 ml Erlenmeyer, 200 ml Erlenmeyer, spatula, stirring rod, PH meter, separating funnel, filter paper, spray bottle, 2 ml measuring pipette, 5 ml measuring pipette, drop pipette, Atomic Absorption Spectrophotometry (SSA). The materials used in this study are HNO3, distilled water, coarse salt, fine salt. The results of heavy metal lead levels in sample A amounted to 1.26 ppm, sample B 1.13 ppm, sample C 3.08 ppm and sample D amounted to 2.88 ppm. Based on these results, it has met the quality standards of consumption salt according to Indonesian national standards.
Synthesis of Water Hyacinth/Cassava Starch Composite as An Environmentally Friendly Plastic Solution Syamsuri, M. Mahfudz Fauzi; Marzuki, Hasan; Setiawan, Dedi Wahyu Ari; Rusmaniar, Rusmaniar; Astika, Tri
Equilibrium Journal of Chemical Engineering Vol 7, No 2 (2023): Volume 7, No 2 December 2023
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v7i2.76508

Abstract

Abstract. Conventional plastics made from petroleum polymers were the largest contributor to solid waste on earth. Environmentally friendly bioplastic fabricated by compositing starch and natural fibers were proposed to be a solution to this problem. The purpose of this research was to synthesize bioplastic from water hyacinth fiber composite with cassava starch and test its mechanical properties. Bioplastic fabrication was using melt intercalation method using water hyacinth fibers (WHF) with and without alkali treatment mixed with cassava starch (CS) and glycerol as plasticizer. The resulting bioplastic were characterized with FT-IR and tested for mechanical properties. The mechanical test results showed that water hyacinth fiber alkaline treated/cassava starch (WHF-AT/CS) bioplastic has tensile strength, % elongation, and water absorption values of 1.226 MPa, 3.33%, and 10.26%, respectively. While the bioplastic water hyacinth fiber untreated/cassava starch (WHF-UT/CS) has a tensile strength test value, % elongation, and water absorption of 0.306 MPa, 1.67%, and 11.39, respectively.  Therefore it can be said that WHF-AT/CS bioplastic has better mechanical properties when compared to WHF-UT/CS bioplastic.Keywords:Biocomposite, Bioplastic, Cassava Starch, Water Hyacinth Fiber
Co-Authors M. Mahfudz Fauzi Syamsuri Marzuki, Hasan Rusmaniar, Rusmaniar Setiawan, Dedi Wahyu Ari