Choiri, M Ishthilakhul (2025) Kinerja Permeable Reactive Barrier (PRB) dengan Material Reaktif Biochar Tempurung Kelapa untuk Remediasi Air Tercemar Logam Berat Timball (Pb) secara in-situ. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Logam berat Pb sebagai bahan baku yang banyak digunakan industri sering kali mencemari air tanah dan menyebabkan berbagai masalah kesehatan bagi manusia dan kerusakan lingkungan. Teknologi remediasi hingga saat ini terus dikembangkan untuk meningkatkan efektivitas dan mengurangi besarnya biaya yang diperlukan untuk proses remediasi. Oleh karena itu, dilakukanlah penelitian ini untuk menguji efektivitas Permeable reactive Barrier (PRB) dengan bahan reaktif biochar tempurung kelapa dan jenis perekat berupa semen dan gypsum casting dalam meremediasi air limbah Pb. Metode penelitian dilakukan dengan mengaplikasikan PRB dengan variasi ketebalan (2 cm dan 4 cm), jenis perekat (semen dan gypsum casting) ke dalam sebuah reaktor vertikal dan horizontal, kemudian dialirkan air limbah mengandung Pb dengan konsentrasi 100 mg/L selama 24 jam. Sampel diambil setiap 3, 6, 12 dan 24 jam untuk dianalisis tingkat efektivitasnya dalam mereduksi Pb. Kandungan Pb dianalisis menggunakan metode Inductively Coupled Plasma – Optical Emission Spectroscopy (ICP-OES) dan metode Toxicity Characteristic Leaching Procedure (TCLP). Parameter uji air olahan berupa pH dan suhu juga dilakukan untuk dianalisis dalam penelitian ini. Hasil penelitian menunjukkan bahwa PRB dapat bekerja dengan meloloskan air limbah Pb dan memberikan hasil penyisihan yang baik. Efektivitas PRB dalam menurunkan Pb dipengaruhi oleh komposisi PRB, ketebalan PRB dan arah aliran air. Kombinasi biochar tempurung kelapa dengan perekat semen memiliki kemampuan paling baik dalam menurunkan Pb. PRB perekat semen ketebalan 4 cm dengan aliran Vertikal menunjukkan peningkatan efisiensi penyisihan seiring bertambahnya waktu detensi yaitu 86,2%, 94,6%, 98,5% dan 99,2%. Proses penyisihan Pb pada PRB melibatkan mekanisme proses adsorpsi oleh biochar dan presipitasi dari peningkatan pH air limbah oleh PRB.
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Heavy metal Pb as a widely used industrial raw material often contaminates groundwater and causes various health problems for humans and environmental damage. Remediation technology continues to be developed to increase effectiveness and reduce the amount of costs required for the remediation process. Therefore, this study was conducted to test the effectiveness of Permeable reactive Barrier (PRB) with coconut shell biochar reactive material and adhesive types such as cement and gypsum casting in remediating Pb wastewater.The research method was carried out by applying PRBs with variations in wall thickness (2 cm and 4 cm), binder types (cement and gypsum casting) into both vertical and horizontal reactors. Wastewater containing 100 mg/L of Pb then flowed through the system for 24 hours. Samples were taken at 3, 6, 12 and 24 hours to analyze using Inductively Coupled Plasma - Optical Emission Spectroscopy (ICPOES) method and Toxicity Characteristic Leaching Procedure (TCLP) method. Additional parameters such as pH and temperature were also evaluated in this study.The results indicated that the PRB system successfully allowed the passage of Pb-contaminated wastewater while achieving effective removal of Pb. The performance of the PRB was influenced by its composition, thickness and flow direction. The combination of coconut shell biochar with cement binder showed the highest Pb removal efficiency. The PRB with cement binder and 4 cm thickness under vertical flow demonstrated increasing removal efficiency over time, reaching 86,2%, 94,6%, 98,5% and 99,2% at 3, 6, 12 and 24 hours, respectively. The Pb removal mechanism involved a synergistic process of adsorption by biochar and chemical precipitation by pH increase included by the PRB.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Biochar, logam berat timbal (Pb), Permeable Reactive Barrier (PRB), remediasi, Biochar, heavy metal lead (Pb), Permeable Reactive Barrier (PRB), remediation. |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering > TD433 Water treatment plants |
| Divisions: | Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Environmental Engineering > 25101-(S2) Master Thesis |
| Depositing User: | M Ishthilakhul Choiri |
| Date Deposited: | 30 Jul 2025 03:29 |
| Last Modified: | 30 Jul 2025 03:29 |
| URI: | http://repository.its.ac.id/id/eprint/122951 |
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