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All Journal Jurnal Bahan Alam Terbarukan PROSIDING SEMINAR KIMIA Jurnal Kimia Mulawarman JURNAL ATOMIK Chemistry Indonesian Journal of Chemical Research Jurnal Abdimas Mahakam Acta Chimica Asiana Molekul: Jurnal Ilmiah Kimia Bulletin of Chemical Reaction Engineering & Catalysis
Teguh Wirawan, Teguh
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Energy Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Public Health Social Sciences

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Journal : PROSIDING SEMINAR KIMIA

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ELEKTRODEKOLORISASI LIMBAH CAIR ZAT WARNA JINGGA DAN HIJAU DARI INDUSTRI SARUNG TENUN SAMARINDA MENGGUNAKAN ELEKTRODA PbO2/Pb Yulieta, Afifah Nur; Wirawan, Teguh; Panggabean, Aman Sentosa
PROSIDING SEMINAR KIMIA Vol 2 No 2 (2024): Prosiding SNKT III 2023
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Electrodecolorization of liquid waste from Samarinda Seberang woven sarong industry using PbO2/Pb electrode was to reduce the dye content of Samarinda Seberang woven sarong waste by electrodecolorization method using lead (Pb) as cathode and lead dioxide (PbO2) as anode. Electrodecolorization of Direk orange and green dyes was carried out by varying the working potential, electrolyte concentration, time and dye concentration. The optimum condition of the Direk orange dye solution is using a working potential of 12 volts, 0.2 M Na2SO4 electrolyte concentration for 15 minutes and the Direk green dye solution is at a working potential of 10.5 volts, 0.2 M Na2SO4 electrolyte concentration for 15 minutes. The percentage of decolorization of the waste liquid sample of the Samarinda orange woven sarong industry using the PbO2/Pb electrode at the maximum condition is 99.58% and the percentage of decolorization of the waste liquid sample of the Samarinda green woven sarong industry using the PbO2/Pb electrode at the maximum condition is 98.46%. Keywords: Electrodecolorization, PbO2/Pb electrode, Na2SO4 electrolyte, Samarinda woven sarong industry waste.
ADSORPSI METHYLENE BLUE OLEH ARANG AKTIF: MINI REVIEW Mulyana, Mulyana; Wirawan, Teguh; Marliana, Eva
PROSIDING SEMINAR KIMIA Vol 3 No 1 (2024): Prosiding SNK 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Methylene blue is a cationic dye molecule which is quite dangerous for the body, one of which can cause irritation of the digestive tract if swallowed, cause cyanosis if inhaled, and cause skin irritation if touched. Adsorption is one of the separation methods most often used in most industries, because the process is easy, and the operating costs are also relatively cheap. Activated charcoal is widely used as an adsorbent material because it has high porosity and surface area and has good absorption capacity for organic and non-organic materials. In this research, a literature study has been carried out on the adsorption of methylene blue with activated charcoal adsorbent from various types of ingredients. There are various factors that can influence the adsorption ability of methylene blue by activated carbon, such as the type of original material, the type of activator used to include HCl, NaCl, KOH, NaOH, H2SO4, and Na2CO3, as well as the temperature range for carbonation between 300-700oC. Adsorption parameters varied, such as pH between 4-9, contact time between 20-240 minutes, and adsorption capacity between 6.90-1614.968 mg/g. Keywords: Methylene blue, Adsorption, Activated charcoal.
ADSORPSI ZAT WARNA METHYLENE BLUE MENGGUNAKAN ADSORBEN KOMPOSIT Fe3O4-ARANG AKTIF KULIT LAI [Durio Kutejensis (Hassk.)Becc.] Rahmawati, Rahmawati; Wirawan, Teguh; Koesnarpadi, Soerja
PROSIDING SEMINAR KIMIA Vol 3 No 1 (2024): Prosiding SNK 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Methylene blue is a synthetic dye commonly used in industry. Methylene blue is not very toxic to humans, but can cause skin irritation, eye irritation, and systemic effects including blood changes. This research aims to utilize lai bark activated charcoal composited with Fe3O4 as an adsorbent to adsorb methylene blue dye. Fe3O4-lai skin activated charcoal composite adsorbent was synthesized using the co-precipitation method from FeSO4.7H2O and FeCl3.6H2O then combined with lai skin activated charcoal. The Fe3O4-activated charcoal composite for skin was characterized using FTIR. The results of composite characterization using FTIR show that there is a wave number of 596.00 cm-1 which is the Fe-O group. The research results showed that the optimum conditions for the adsorption of methylene blue dye by the Fe3O4-activated charcoal composite adsorbent for lai skin were 60 minutes, pH 8, concentration 250 mg/L and following the Langmuir isotherm. The maximum adsorption capacity of Fe3O4-lai skin activated charcoal composite was 197.8792 mg/g. Keywords: Adsorption, Methylene Blue Dye, Composite, Lai Leather
Co-Authors Abdul Aziz Agusti, Nabila Nur Ahmad, Atika Aulia Aman Sentosa Panggabean Ananda, Azizah Fithri Arief, M. Syaiful Arisa, Putri Aulia, Erfah Sasmita Degirmenci, Volkan Djihan Ryn Pratiwi, Djihan Ryn Ersanto, Tri Edi Eva Marliana, Eva Fatmawati, Ririn Anggraeni Fradita, Windiy Mira Gaanty Pragas Maniam, Gaanty Pragas Hadi Nur Hairani, Rita Hermawan Hermawan Hiyahara, Irfan Ashari Husna Syaima Juliani, Okti Lai, Sin Yuan Menono, Fera Friskaneke Mukhamad Nurhadi, Mukhamad Mulyana Mulyana Mulyana Mulyana Nanang Tri Widodo Nazarudin Noor Hindryawati, Noor Nurfarizha, Harisma Oliviani, Nadira Rahmadani, Agung Rahmawati, Rahmawati Ramadani, Desi Fidyah Reknosari, Elen Ruga, Ritbey Saibun Sitorus Sam, Risna Fitriani Sari, Riska Alif Kartika Soerja Koesnarpadi Subur P Pasaribu Sujito Sujito Wirhanuddin, Wirhanuddin Yulieta, Afifah Nur Yuniar Ponco Prananto