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All Journal Fullerene Journal of Chemistry Oxygenius Journal Of Chemistry Education
Djefry Tani
Universitas Negeri Manado
Chemistry Education

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Journal : Fullerene Journal of Chemistry

 1 
Optimalisasi Adsorpsi Kitosan Dari Kitin Cangkang Keong Sawah (Pilla Ampullacea) Terhadap Logam Kadmium (Cd) Olivia Indra Moray; Djefry Tani; Dokri Gumolung
Jurnal Kimia Fullerene Vol 6 No 1 (2021): Fullerene Journal of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v6i2.172

Abstract

This research aims to make the chitosan from the chitin of the Snail shell (Pilla ampulacea) which can be used as a cadmium metal adsorbent (Cd). It is derived from the isolation of the snail shells through 2 phases, which are deproteination to remove protein and demineralization to remove mineral salts. The formed Kitin is transformed into Chitosan by deacetylated using NaOH 60%. Kitin and Chitosan were acquired, identified by FTIR. The results showed that the chitin yield was 26.81% of the shell weight of 400 grams and the rendemen Chitosan was 31.78% of the weight of chitin. The results of the identification indicate the absorption area of chitin and chitosan function groups, similar to the standard chitin and chitosan uptake areas. Metal adsorption Cd uses adsorbent chitosan from the shell snail (pilla ampulacea) Most optimal occurs at a contact time of 15 minutes and on the weight of adsorbent 0.25 grams, the most optimal absorption occurs at a comparison of 1:30 weight chitosan/volume solution Cd.
Optimasi Spesiasi Kromium Ke Bentuk Cr(III) - Tanat Jenifer Alfonda Walewangko; Djefry Tani; Joice Caroles
Jurnal Kimia Fullerene Vol 5 No 1 (2020): Fullerene Journal of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (370.156 KB) | DOI: 10.37033/fjc.v5i1.103

Abstract

This research was conducted to determine the heavy metal species of Cr (III). Determination of heavy metals is determined based on the required chromium species using the UV-Vis spectrophotometry method. The sample used was CrCl3.H2O and the complexing agent was tannic acid. This research was conducted to determine the effect of pH, concentration and time of stability by finding the optimum conditions of the chromium - tanic acid complex. The optimum pH is at pH 11, the optimum concentration is at a ratio of 5: 1 concentration (Cr: tanic acid), the stability of time is at the 10th minute.
Co-Authors Abdon Saiya Astrid Magritha Singal Dokri Gumolung Elisabet Avilia Supit Istiani Astari Nanangkong Jeanne M. Tuerah Jeivana Laluas Jenifer Alfonda Walewangko Joice Dorsila Susana Caroles Marlina Karundeng Olivia Indra Moray Rivya Tamungku Rymond Jusuf Rumampuk Wilson Rombang