Uji Kemampuan Permeable Reactive Barrier Dengan Perekat Semen dan Geopolimer Dalam Upaya Remediasi Air Tercemar Logam Berat Timbal (Pb)

Aqshadiova, Heryanda (2025) Uji Kemampuan Permeable Reactive Barrier Dengan Perekat Semen dan Geopolimer Dalam Upaya Remediasi Air Tercemar Logam Berat Timbal (Pb). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pencemaran air oleh logam berat timbal (Pb) menjadi salah satu tantangan utama dalam pengelolaan sumber daya air. Timbal berpotensi merusak kualitas air tanah dan menimbulkan dampak negatif pada kesehatan manusia dan lingkungan. Penelitian ini bertujuan menguji efektivitas Permeable Reactive Barrier (PRB) berbahan biochar tempurung kelapa yang dikombinasikan dengan perekat dalam meremediasi air tercemar Pb melalui mekanisme adsorpsi. Variasi komposisi perekat (30%, 40%, 50%, dan 100%) dan jenis perekat (semen dan geopolimer) digunakan untuk mengevaluasi pengaruhnya terhadap kinerja PRB. Metode penelitian meliputi persiapan reaktor, pembuatan air limbah buatan dengan rencana kandungan Pb 100 mg/L, serta pengujian parameter utama seperti kandungan Pb pada air sampel, pH, suhu, konduktivitas listrik (EC), Toxicity Characteristic Leaching Procedure (TCLP) dan kuat tekan PRB. Proses pengujian dilakukan dalam reaktor dengan variasi waktu kontak (3, 6, 12, dan 24 jam). Kandungan Pb dianalisis menggunakan metode Inductively Coupled Plasma – Optical Emission Spectroscopy (ICP-OES) dan metode TCLP. Hasil pengujian kandungan Pb awal pada air sampel sebesar 89,37 mg/L. PRB dengan biochar tempurung kelapa efektif dalam menurunkan kadar Pb dalam air hingga tingkat yang signifikan. Efektivitas adsorpsi dipengaruhi oleh jenis perekat, komposisi PRB, dan waktu kontak. Metode dalam menentukan jenis perekat dan komposisi yang terbaik menggunakan Simple Additive Weighting (SAW). Jenis perekat semen menunjukkan kemampuan yang lebih baik untuk menjadikan biochar tempurung kelapa menjadi PRB. PRB dengan perekat semen memiliki % penyisihan yang lebih stabil dalam jangka waktu yang lebih lama, nilai TCLP yang lebih rendah, dan daya kuat tekan yang lebih tinggi dibandingkan dengan PRB perekat geopolimer. Kemudian, komposisi semen 30% menunjukkan kemampuan yang lebih baik dibandingkan dengan komposisi lainnya.
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Water pollution caused by lead (Pb) heavy metal is one of the primary challenges in water resource management. Lead has the potential to degrade groundwater quality and pose significant risks to human health and the environment. This study aims to evaluate the effectiveness of a Permeable Reactive Barrier (PRB) made from coconut shell biochar combined with binders in remediating Pb-contaminated water through adsorption mechanisms. Various binder compositions (30%, 40%, 50%, and 100%) and binder types (cement and geopolymer) were employed to assess their influence on PRB performance. The research methodology included reactor preparation, the creation of synthetic wastewater with a targeted Pb concentration of 100 mg/L, and testing of key parameters such as Pb concentration in water samples, pH, temperature, electrical conductivity (EC), Toxicity Characteristic Leaching Procedure (TCLP), and the compressive strength of the PRB. The experiments were conducted in a reactor with varying contact times (3, 6, 12, and 24 hours). Pb concentration was analyzed using Inductively Coupled Plasma–Optical Emission Spectroscopy (ICP-OES) and TCLP methods. The results indicated that the initial Pb concentration of the solution was 89.37 mg/L. The PRB incorporating coconut shell biochar proved effective in significantly reducing Pb levels in water. Adsorption efficiency was influenced by the binder type, PRB composition, and contact time. The method to determine the optimal binder type and composition employed the Simple Additive Weighting (SAW) technique. Cement-based binders demonstrated superior performance in converting coconut shell biochar into an effective PRB. PRBs with cement binders exhibited more stable Pb removal over an extended period, lower TCLP values, and higher compressive strength compared to geopolymer-based PRBs. Furthermore, a binder composition of 30% cement showed better performance compared to other compositions.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Permeable Reactive Barrier (PRB), Biochar, Timbal (Pb), Adsorpsi, Lead (Pb), Adsorption
Subjects:	T Technology > TD Environmental technology. Sanitary engineering T Technology > TD Environmental technology. Sanitary engineering > TD430 Water--Purification.
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Environmental Engineering > 25201-(S1) Undergraduate Thesis
Depositing User:	Heryanda Aqshadiova
Date Deposited:	23 Jan 2025 03:46
Last Modified:	23 Jan 2025 03:46
URI:	http://repository.its.ac.id/id/eprint/116704

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