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All Journal Journal of Degraded and Mining Lands Management Jurnal Pengabdian Pada Masyarakat CHEESA: Chemical Engineering Research Articles Jurnal Redoks Martabe : Jurnal Pengabdian Kepada Masyarakat Jurnal Ilmiah Teknik Kimia Jurnal Civronlit Unbari Jurnal Daur Lingkungan Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Jurnal Engineering Prosiding Seminar Nasional Pengabdian Kepada Masyarakat Pengabdian Cendekia
Sarah Fiebrina Heraningsih
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Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Public Health Social Sciences Other

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Coffee Waste as a Potential Adsorbent for Peat Water Treatment Rahma Amalia; Sarah Fiebrina Heraningsih; Oki Alfernando; Sri Mundarti; Muhammad Haviz; Nadia Elvina; Sonia Nizal Putri; Resi Lisma Kinasih; Asmara; Yuzi Chantika Pratama; Ahmad Fadhilah Ashidiqie
CHEESA: Chemical Engineering Research Articles Vol. 8 No. 1 (2025)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v8i1.22320.23-34

Abstract

Peat water is characterized by high acidity, turbidity, and poor sensory qualities, which limit its usability. This study evaluated the effectiveness of thermally activated coffee waste adsorbent (CWA) for peat water treatment. CWA was prepared by heating coffee waste at 250°C, followed by washing and drying at 60°C. Batch adsorption experiments were conducted using 1–3 g of CWA in 200 mL of peat water at 30°C, stirred at 150 rpm for 30 minutes. The results revealed significant improvements in water quality: pH increased from 3.85 to 4.62; turbidity was reduced by 99.37% (from 75 to 0.47 NTU); conductivity decreased by 30.7% (from 424 to 294 ?S/cm); and total dissolved solids (TDS) dropped by 93.3% (from 208 to 14 ppm). The Langmuir isotherm model (R² = 0.7297) provided a better fit than the Freundlich model (R² = 0.5845), indicating monolayer adsorption behavior with a maximum capacity of 0.1634 mg/g and a favorable separation factor (RL = 0.0057). Sensory evaluation confirmed enhanced color and odor. These findings support the use of CWA as a sustainable and low-cost adsorbent for improving peat water quality.
Co-Authors Adelia Amanda Ahmad Fadhilah Ashidiqie AHMAD RIDUAN Akbar, Firdaus Aldillah Herlambang Alfernando, Oki Alfernando, Oki Alfernando alih Prabasari, Ira G Alya Rizki Amelia Amalia, Rahma Asmara Badariah Badariah Badariah Badariah Bimaruci Hazrati Havidz, Hazimi Bunga Andari Mukhtasida Dian Ariansyah Dila Oktarise Dwina Dinda Bectari Eliyanti Eliyanti Elly Indra Swari Enita Pitri Feerzet Achmad Feerzet Achmad Fitri Nor Chasanah Gabriel Adi Pratama Marpaung Hariestya Viareco Indah Purwati Ita Safitri Jasminarni Jesika Sinaga Josua Sidauruk Karisma Ulfadeli Kasmiyanti Kasmiyanti Lestary, Rara Ayu Lince Muis Lince Muis M syahran jailani Manurung, Pandapotan Maruli Tua Maulidini Nabila Mela Mauliani Muhammad Haviz Mundarti, Sri Nadia Elvina Nissa Sukmawati Nur Sri Wahyuningsih Oki Alfernando Oki Alfernando Okta Priadi Oktarise Dwina, Dila Pane, Patricia Permata Putri Prabasari, Ira Galih Rahma Amalia Rainiyati Rainiyati Rainiyati, Rainiyati Rara Ayu Lestary Raudhatussya'rifah, Ra'ida Resi Lisma Kinasih Riska Nofia Qona'a Riski Dwimalida Putri Rosmawati Sipayung Septrinawati Tambunan Sonia Nizal Putri Sri Mundarti Suryadri, Hadistya Syafhira Putri Aulia Tiamsa Sihotang Tiara Bartisa Putri Trias Novita Widyastuti, Nita Yulistian, Saldi Yuzi Chantika Pratama