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All Journal VALENSI International Journal of Renewable Energy Development Bionatura Jurnal Ekonomi & Kebijakan Publik Science and Technology Indonesia Al-Kimia Chimica et Natura Acta ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry PENDIPA Journal of Science Education Jurnal Sains dan Kesehatan Kimia Padjadjaran
Santhy Wyantuti
Program Studi Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Padjadjaran, Kabupaten Sumedang, Indonesia, 45363
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Energy Environmental Science Immunology & microbiology Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics

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Journal : Al-Kimia

 1 
Modifikasi Elektrode Glassy Carbon Dengan Nanopartikel Emas Dan Aplikasinya Untuk Mendeteksi Kromium(VI) Secara Voltammetri Pulsa Differensial Santhy Wyantuti; Mahendra Permadi; Diana Hendrati; Yeni Wahyuni Hartati
Al-Kimia Vol 5 No 1 (2017): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v5i1.2844

Abstract

Chromium(VI) is very toxic and has been classified as a carcinogen in humans breathing. Purpose of this experiment is to analyze chromium(VI ) in voltammetry using a glassy carbon electrode modified with gold nanoparticles. Voltammetry method is a method of measuring the current generated from a given potential to the working electrode so that the electrode can be widely modified work. The procedures were produce pencil graphite electrode that was coated by gold nanoparticles and measured chromium(VI) signal. From this study obtained a detection limit of 12.70 ppm and 99.99% precision measurement and measurement of 0.8 V deposition potential, deposition time  of 120 seconds and a scan rate of 0.01 V/s optimum.
Pengaruh Jenis Stripping Agent Pada Fasa Internal Menggunakan Metode Emulsion Liquid Membrane Dalam Pemisahan Logam Pengompleks Purba, Anita Zefanya Marchelina; H Bahti, Husen; P Fauzia, Retna; Pratomo, Uji; Wyantuti, Santhy
Al-Kimia Vol 12 No 1 (2024): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v12i1.46271

Abstract

Heavy metals have a high density, atomic weight, or atomic number. Heavy metals are potentially hazardous to health and the environment and must be separated. Emulsion liquid membrane is a promising technique to remove heavy metal contaminants from industrial and household effluents. Emulsion liquid membrane (ELM) is used to separate heavy metals as it is effective and efficient. ELM involves external, membrane, and internal phases. The internal phase is essential in the separation process as it carries stripping agents to pull metals from the membrane to the internal phase. The choice of stripping agent concentration in the internal phase, such as HNO3, H2SO4, HCl, NaOH, and Na2CO3, affects the extraction efficiency in separating heavying metals using ELM. This article evaluates the effect of stripping agent concentration on extraction efficiency.
Utilization of Green Diluent on the Removal for Heavy Metal Contaminants Using Emulsion Liquid Membrane Kharitas Insani; H Bahti, Husein; Pratomo, Uji; Fauzia, Retna; Santhy Wyantuti; Fajar Firmansyah
Al-Kimia Vol 12 No 1 (2024): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v12i1.46283

Abstract

Growing industries and human activities have increased the amount of waste containing heavy metals, potentially toxic to human health and the environment. Conventional methods for handling heavy metal wastes have limitations, so the current emerging technique is emulsion liquid membrane (ELM), which is easy and inexpensive and leads to green chemistry. The composition of ELMs generally consists of surfactant, extractant, stripping agent, and diluent. In this article, the focus is on the use of environmentally sustainable diluents derived from vegetable oils. The diluent acts as a solvent for the extractant, helping form a stable emulsion and lowering the emulsion breakage percentage. This article aims to evaluate the potential use of vegetable oils as diluents in the Emulsion Liquid Membrane (ELM) process to improve emulsion stability and heavy metal extraction efficiency.
Co-Authors Afrizal Mayub Amelia Shafira Anni Anggraeni, Anni Annisa Ilma Naviardianti Annisa Ilma Naviardianti Annisa Luthfiah Ari Hardianto Bahti, Husein Hernadi Dewi Handayani Diana Hendrati Diana Hendrati Diana R. Eddy Diana Rakhmawaty Diana Rakhmawaty Eddy Dikdik Kurnia Effendi, Syulastri Egista Istioka Fazrin Emma Rochima Erianti Siska Purnamasari Fadhilah, Riana Adisti Fajar Firmansyah Fauzia, Retna Fauziah, Retna Putri H Bahti, Husein H Bahti, Husen Hendrati, Diana Husein Hernadi Bahti Husein Hernandi Bahti Kharitas Insani Lena Rahmidar Lukmanul Hakim M. Lutfi Firdaus M. Lutfi Firdaus M. Lutfi Firdaus, M. Lutfi Mahendra Permadi Mardhotillah, Yulia Mardiah, Najmah Muhamad Diki Permana Muhammad Yusuf Nursaadah, Euis Nurul Auliany Nurwulanda, Salsha P Fauzia, Retna Pratomo, Uji Purba, Anita Zefanya Marchelina Putri, Syelena Prima Rahmani, Azmi Aulia Ravenna Aristantia Retna Putri Fauzia Riana Adisti Fadhilah Rini Surbakti Rizki M. Okumura Rokhmat, Launa Silky Karenindra Sari Syahruni Shabarni Gaffar Shauvina, Shauvina A Sutanto, Cindy Florencia Toto Subroto Uji Pratomo Yeni Wahyuni Hartati Zahra, Sahlaa Alifah