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All Journal Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia Alchemy : Journal of Chemistry EduChemia: Jurnal Kimia dan Pendidikan Indonesia Chimica Acta Al-Kimia Chimica et Natura Acta Chemistry Indonesian Journal of Chemical Research Walisongo Journal of Chemistry Dharma Bakti JKPK (Jurnal Kimia dan Pendidikan Kimia) ALKIMIA : Jurnal Ilmu Kimia dan Terapan Amina Jurnal Sains dan Teknologi Peternakan
Firnanelty, Firnanelty
Department Of Chemistry, Faculty Of Science And Technology, Universitas Islam Negeri Alauddin Makassar
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Engineering Environmental Science Materials Science & Nanotechnology Social Sciences Veterinary Other

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Journal : Chemistry Indonesian Journal of Chemical Research

 1 
Analysis of the Heavy Metal Levels (Cd, Fe, Hg and Pb) at Losari Beach Tourism Reclamation of Makassar Firnanelty, Firnanelty; Chadijah, Sitti; Adawiah, Syarifah Rabiatul; Firdaus, Firdaus; Nugraha, Muh. Imam Dyan Nugraha Imam Dyan
Indonesian Journal of Chemical Research Vol 10 No 2 (2022): Edition for September 2022
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598//ijcr.2022.10-fir

Abstract

The process of stockpiling reclamation areas and disposing of waste streams can pollute the environment and cause the attendance of dangerous heavy metals. In this research was conducted to determine heavy metals Cd, Fe, Hg, and Pb levels in water and sediment on Losari beach. The method used was an atomic absorption spectrophotometer. The result showed that the levels of Cd and Fe in the water for the north point were 0.0278 and 0.0432 mg/L, the south point was 0.0031 and 0.0674 mg/L, the point around the platform showed 0.0028 and 0.0534 mg/L and the levels of sediment were 0.0010 and 31.2417 mg/L. The levels of Hg and Pb in water were 0.0235 and 0.0390 mg/L (north point) 0.0105 and 0.0420 mg/L (south point) 0.0027 and 0.0460 mg/L (around the platform), sediments were 0.0027 and 0.071 mg/L. The result concluded that the concentration of Cd had crossed the threshold only at the north point namely 0.01 mg/L, while the concentration of Fe that crossed the threshold was only in sediment namely 20 mg/L. The level of Hg and Pb pollution in the water and sediment of Losari beach tourism is polluted because it exceeds quality standards.
Bioelectrochemical Systems (BESs) Technology for The Production of Electrical Energy from Kepok Banana Stem Chadijah, Sitti; Firnanelty, Firnanelty; Baharuddin, Maswati Baharuddin; Sappewali, Sappewali
Indonesian Journal of Chemical Research Vol 11 No 2 (2023): Edition for September 2023
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598//ijcr.2023.11-sit

Abstract

Bioelectrochemical Systems (BES) technology is a method for generating electric energy using bacteria as catalysts. The electricity is produced by Microbial Fuel Cells (MFCs), which represent the latest development in biological energy research. This study utilized substrates from banana stems and the bacterium Pseudomonas sp. The research aims to assess the potential of banana stems as a substrate in the MFC system and to determine the effects of adding a combination of an electrolyte solution and an appropriate buffering material to achieve maximum current, potential difference, and power density values. The results showed that the maximum current and potential difference achieved were 1.05 mA and 0.62 V, respectively, with a power density value of 446 mW/m². When combining the KMnO4 electrolyte solution with sodium phosphate buffer, a potential difference of 0.76 V and a current of 1.75 mA were obtained, resulting in a power density value of 911 mW/m². By using the K3[Fe(CN)6] electrolyte solution buffer with potassium phosphate buffer, a current of 1.14 mA was produced, and the power density value reached 406 mW/m².
Adsorption of Inorganic and Organic Waste of Chemistry Laboratory by Using Eggshell-based CaO Karim, Kurnia Ramadani; Firnanelty, Firnanelty; Fadhilah, Nur
Indonesian Journal of Chemical Research Vol 13 No 2 (2025): Edition for September 2025
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2025.13-kur

Abstract

Laboratory activities are closely related to using corrosive, acidic, and toxic chemicals in producing inorganic and organic waste, such as heavy metals, resulting from chemical reactions, and organic waste originating from ethanol solvents. Adsorption can be an appropriate waste handling step to reduce metal levels in waste. CaO can be used as an adsorbent through several mechanisms. One involves the basic nature of CaO, which forms ionic bonds with acidic compounds in the environment, so these molecules or ions can be adsorbed on the CaO surface. The aims are to characterize CaO and to determine the amount of adsorption power of the CaO catalyst on metals (Pb and Cd) and organic waste (ethanol) originating from the chemistry laboratory. The SSA measurement showed that the waste tested contained the highest levels of Cd and Pb metals, namely 16.82 ppm and 1.52 ppm. The adsorption results using CaO showed that the absorption capacity for Cd and Pb metal was up to 99%, while for ethanol, it was around 20%. It showed that CaO can be used as an adsorbent for laboratory waste.
Co-Authors Abubakar, A. Nur Fitriani Abubakar, Andi Nur Fitriani Ahmad Bikharuddin Aisyah Aisyah Aisyah Aisyah Aisyah Aisyah Aisyah Rusdin Amriana Hifizah Anas Qurniawan Andi Nur Fitriani Abubakar Andi Nur Fitriani Abubakar Arfiani Nur Aspina Damayanti Asriani Ilyas Asriani Ilyas Astati, Astati Awaluddin Awaluddin Baharuddin, Maswati Baharuddin Baso Kaswar, Andi Busrah, Zulfiqar Cahyani, Andi Imas Febryanti, Amalyah Firdaus Firdaus Halisa, Halisa Iin, Iin Novianty Irnaningsih Karim, Kurnia Ramadani Manesa, Sri Haerani Dg Maswati Baharuddin Melati Masri Muhammad, Rusny Nugraha, Muh. Imam Dyan Nugraha Imam Dyan Nur Fadhilah Nurfadillah Patunrengi, Iswadi Ibrahim Rahmawati, Sari Ramadani, Kurnia Rezeki, Rezeki Rezki Nur Damayanti Sahyuni Hamzah Sappewali, Sappewali Sitti Chadijah Sjamsiah, Sjamsiah St Chadijah St. Aisyah Syahdam Karneng Syam, M. A. Syarifah Rabiatul Adawiah, Syarifah Rabiatul Titik Andriani Titik Andriani, Titik Ummi Zahra, Ummi Windasari Windasari, Windasari