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All Journal Jurnal Teknik Kimia USU Riau Journal of Empowerment Journal of Saintech Transfer Jurnal Teknik Kimia USU
Fachry Wirathama, Syahrinal Anggi Daulay Halimatuddahliana
Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences Other

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Pengaruh Waktu Kontak dan Massa Adsorben Biji Asam Jawa (Tamarindus indica) dengan Aktivator H3PO4 terhadap Kapasitas Adsorpsi Zat Warna Methylene Blue Rizki, Andri; Syahputra, Ervan; Pandia, Setiaty; Halimatuddahliana
Jurnal Teknik Kimia USU Vol. 8 No. 2 (2019): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v8i2.1881

Abstract

This study aims to determine the best adsorption capacity of methylene blue with variations in the mass of the adsorbent, contact time and determine the reaction kinetics and adsorption isotherms of activated carbon. The raw material for activated carbon is tamarind seeds. Tamarind seeds is started to neutral pH and dried in an oven at 130°C to a constant weight, then mashed using a blender and sifted using a 140 mesh sieve. adsorbent 140 mesh was added to 100 ml of methylene blue solution at a stirring speed 150 rpm for each variation of contact time 30 minutes, 60 minutes, 120 minutes and 180 minutes and mass of adsorbent 0,3 gs, 0,4 gs, 0,6 gs and 0,9 gs. The efficiency of the best description of methylene blue is 98,827% with 120 minutes and pH 6 at 0,9 gs of activated carbon. The maximum methylene orange adsorption capacity is 24,670 mg/g at 100 mg/L methylene blue concentration. The model suitable for this study is the second order kinetics and Freundlich adsorption isotherm. The results of the Fourier Transform Infra-Red (FTIR) spectrophotometer on the raw material of Tamarind seeds before activated were obtained by wave number which shows the presence of functional goups C-O, O-H, and C=O goups which form a special goup found on biosorbent, functional goups that appear after activation is a C=C goup which shows an increase in carbon and C-H goups (Alkenes). The results of the Scanning Electron Microscope (SEM) characterization show that the surface morphology of the activated carbon from tamarind seeds has a surface that is open, coarse, and uniform porosity. The pores of biosorbent after activation in vacant soil without impurity.
Karakteristik Zat Warna Antosianin (Adenanthera pavonina L) dari Kulit Biji Saga sebagai Pewarna Alami Menggunakan Metode Soxhletasi Halimatuddahliana; Pandia, Setiaty; Hasmita, Fira Ayu
Jurnal Teknik Kimia USU Vol. 9 No. 2 (2020): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v9i2.2828

Abstract

In general, dyes that are used in daily life using synthetic dyes. One material that can be used for natural pigment are from saga seeds (Adenanthera pavonina L). Saga (Adenanthera pavonina L) is a tree that has small red seeds which is one source of anthocyanin which can be used as natural dyes, antioxidants and anticarcinogens. In this research aims to find the type of solvent and the best extraction time used for the extraction of anthocyanin from saga seeds. Extraction of anthocyanin  from saga seeds used soxhletation method. The variables this research there are the type of solvent (5% citric acid 5% and citric acid 5% (w/v)) and the extraction time (30, 60, 120 minutes). The parameters used are qualitative and quantitative analysis (total yield, total anthocyanin concentration, antioxidant activity, intensity colour and lethal concentration of anthocyanin toxicity in extracts). The result observationaling show that the extraction from saga seeds that have best characteristics in aquadest-citric acid 5% solvent extract yield with extraction time 120 minutes 64.448% (w/w), total anthocyanin with extractions time 120 minutes 100.026 (mg/L), color intensity with extraction time 60 minutes 0.528, antioxidant activity (IC50) 11.622 ppm and toxicity activity with extraction time 60 minutes 63.326 ppm.
Pengaruh Waktu Kontak dan Massa Adsorben Biji Asam Jawa (Tamarindus indica) dengan Aktivator H3PO4 terhadap Kapasitas Adsorpsi Zat Warna Methylene Blue Rizki, Andri; Syahputra, Ervan; Pandia, Setiaty; Halimatuddahliana
Jurnal Teknik Kimia USU Vol. 8 No. 2 (2019): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (713.924 KB) | DOI: 10.32734/jtk.v8i2.1881

Abstract

This study aims to determine the best adsorption capacity of methylene blue with variations in the mass of the adsorbent, contact time and determine the reaction kinetics and adsorption isotherms of activated carbon. The raw material for activated carbon is tamarind seeds. Tamarind seeds is started to neutral pH and dried in an oven at 130°C to a constant weight, then mashed using a blender and sifted using a 140 mesh sieve. adsorbent 140 mesh was added to 100 ml of methylene blue solution at a stirring speed 150 rpm for each variation of contact time 30 minutes, 60 minutes, 120 minutes and 180 minutes and mass of adsorbent 0,3 gs, 0,4 gs, 0,6 gs and 0,9 gs. The efficiency of the best description of methylene blue is 98,827% with 120 minutes and pH 6 at 0,9 gs of activated carbon. The maximum methylene orange adsorption capacity is 24,670 mg/g at 100 mg/L methylene blue concentration. The model suitable for this study is the second order kinetics and Freundlich adsorption isotherm. The results of the Fourier Transform Infra-Red (FTIR) spectrophotometer on the raw material of Tamarind seeds before activated were obtained by wave number which shows the presence of functional goups C-O, O-H, and C=O goups which form a special goup found on biosorbent, functional goups that appear after activation is a C=C goup which shows an increase in carbon and C-H goups (Alkenes). The results of the Scanning Electron Microscope (SEM) characterization show that the surface morphology of the activated carbon from tamarind seeds has a surface that is open, coarse, and uniform porosity. The pores of biosorbent after activation in vacant soil without impurity.
Co-Authors Addriyanus Amir Husin Castiqliana Elmer Surya Era Yusraini Fachry Wirathama Falma Irawati Sijabat Fatimah Fatimah Florence T.N. Silalahi Hasmita, Fira Ayu Jenmorisdo Saragih Julianti, Elisa Michael Muhammad Turmuzi Orion Syaputra Ridwansyah Ridwansyah Rizki, Andri Saharman Gea Setiaty Pandia, Setiaty Silvia Syahputra, Ervan Syahrinal Anggi Daulay Tamaria Kesia Hutasoit Terip Karo-Karo Tommy