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ANALISIS KUALITAS AIR TANAH DI KAWASAN PESISIR DESA LABUHAN KERTASARI, SUMBAWA BARAT Andi Maria Ulfa; Amirul Hilmi; Syarifah Rabiatul Adawiah
Analit : Analytical and Environmental Chemistry Vol. 6, No. 01 April (2021) Analit : Analytical and Environmental Chemistry
Publisher : Jurusan Kimia FMIPA Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aec.v6i1.2021.p22-32

Abstract

Tujuan penelitian ini yaitu untuk menganalisis kualitas air tanah di kawasan pesisir Desa Labuhan Kertasari, Kabupaten Sumbawa Barat. Metode penelItian yang digunakan yaitu observasi langsung ke lapangan, dan titik sampel dilakukan dengan metode purposive sampling, yaitu sebanyak 40 titik. Analisis kualitas air dilakukan dengan mengukur nilai parameter fisika dan kimia yang meliputi pH, TDS, dan DO. Pengukuruan parameter-parameter penelitian dilakukan secara insitu. Hasil penelitian menunjukkan kualitas air di Desa Labuhan Kertasari menunjukkan terdapat 7,5% yang termasuk kelas I, sesuai dengan baku mutu air yang ditetapkan, yaitu pada SW25, SW26 dan SW28 dengan nilai TDS berturut-turut: 893 mg/L; 836 mg/L; 904 mg/L, nilai pH berturut-turut: 7,36; 7,25; 7,76 dan nilai DO berturut-turut: 7,2; 6,9; 7,4. Air pada titik sampel S26 memiliki kualitas yang paling baik dari 40 titik sampel.http://dx.doi.org/10.23960/aec.v6.i1.2021.p22-32 
Characterization of Chicken Eggshell-Derived Hydroxyapatite/Zeolite Composite as a Methylene Blue Absorbent Safitriani, Nur; Ramadani, Kurnia; Chadijah, Sitti; Adawiah, Syarifah Rabiatul; Andriani, Titik; Firnanelty, Firnanelty
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 10, No 1 (2025): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v10i1.99042

Abstract

Purebred chicken eggshell is a promising natural source because it contains high calcium carbonate (CaCO3), which is used as a hydroxyapatite (HAp) precursor, with natural abundance and biodegradability, making it an eco-friendly alternative to synthetic materials. HAp is relevant for dye removal because of its high adsorption capacity, chemical stability, and ability to interact with dye molecules through ion exchange and surface interactions with the material. The composite adsorbent of Hap-zeolite is effective for wastewater treatment based on the result of HAp-zeolite composite's adsorption capacity against methylene blue. Methylene blue is one of the dyeing wastes originating from the textile industry. The method of synthesis of Hap used precipitation. The FTIR characterization results showed OH groups at wavenumber 3434 cm-1, CO32- group with wavenumber 1421 cm-1, PO43- bending group with wavenumber 565 cm-1, and PO43- stretching at wavenumber 1035 cm-1. The highest peak XRD yield at an angle of 2θ=34.04º corresponds to a hexagonal crystal formed. The adsorption process is carried out with a HAp-zeolite mass ratio of 4:2 (w/w), with contact times for 180 minutes, resulting in the best adsorption efficiency around 99.99% measured via UV-Vis spectrophotometry. The results indicate that HAp-zeolite composites are highly effective for methylene blue removal and have potential application in wastewater treatment.