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Wanti Mindari
Program Studi Agroteknologi Fakultas Pertanian UPN “Veteran” Jawa Timur
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Journal : Acta Solum

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Mitigating Heavy Metal Contamination in Agricultural Soils with Biosilica-Humic Acid as Soil Amendment Strategies in Industrial Peripheries Chakim, M Ghufron; Mindari, Wanti; Sasongko, Purnomo Edi
Acta Solum Vol. 3 No. 3 (2025): Juli 2025
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v3i3.3367

Abstract

Soil contamination by heavy metals poses a significant threat to sustainable agriculture, especially in areas adjacent to industrial zones. This study demonstrates that while the initial application of the biosilica-humic acid (BSi-HA) soil amendment did not result in statistically significant changes in soil chemical properties within the first 7 days of incubation, prolonged incubation for 60 days revealed meaningful effects, particularly in reducing heavy metal availability in soil. Significant decreases in iron (Fe) and lead (Pb) concentrations were observed over time, with Fe reductions ranging from 45–67% and Pb reductions between 8–40%. These results are attributed to the synergistic effect of functional groups in BSi-HA—especially the carboxyl (–COOH) and hydroxyl (–OH) groups in humic acid—which exhibit high metal-binding affinity under acidic conditions (pH ~5). Although soil fertility parameters such as C-organic content and cation exchange capacity (CEC) showed a declining trend due to microbial activity during incubation, the ability of BSi-HA to immobilize heavy metals without exceeding safe thresholds highlights its potential as a sustainable soil amendment. Moreover, previous findings indicating reductions of up to 90% for Pb and 76% for Cd in plant tissues further support the efficacy of BSi-HA in mitigating heavy metal contamination in agricultural soils near industrial zones. Further long-term studies are recommended to evaluate BSi-HA's remediation capacity, persistence, and impact on crop yield and food safety. Combining biosilica and humic acid offers a promising, eco-friendly approach for managing heavy metal contamination in soils.
Co-Authors . Maroeto . Syekhfani . Syekhfani A, Argananta Sakha Aditama, Diqy Ridwan Aditya, Haidar Fari Ahmad Mustapha Mohamad Pazi Andahrino, Berliana Putri Angga Handika Putra Augustien, Nora Bahiro, Badriyatul Bakti Wisnu Widjajani Bakti Wisnu Widjayani Cahyo, Zumatul Atiko Islamya Cholid Fadil Chosa Zahro Fatiha Dewi, Fifi Aurafika Farichah Isnaini Fitri Wijayanti Guntoro, Wuwut Hadi Suhardjono Haidar Fari Aditya Hamidah, Nilna Murobbiyah Harya, Gyska Indah Ika Nur Fitriana Ir, MT., Siswanto Iwan Kresna Setiadi Jayanti, Fara Amilia Kartika, Nanda Ajeng M. Ghufron Chakim Maemunah Maemunah Mahendra Kusuma, Ramadhani Mahesa Fahmi Husein Maroeto Maroeto Maroeto, ' Maroeto, . Moch. Arifin Muhammad Dzikrullah Muhammad Dzikrullah Nabila Putri Wiandari Novita Risti Azahra Novita Risti Azahra Nur Supriyadi, Yudi Penta SURYAMINARSIH Permatasari, Fina Dwi Pradana, Iqbal Satria Pratama, Arista Priyadarshini, Rossyda Puji Lestari Tarigan Purnomo Edi Sasongko Purwadi MP. Ir Purwadi Purwadi Rahayu Anggraini Ramadhani Mahendra Kusuma Riski, Aqilla Wulan Rudini Berbudi Rusyla Dwi Rahayu Rusyla Dwi Rahayu Rusyla Dwi Rahayu S Siswanto S Siswanto Sasongko, Edi Purnomo Seca Gandaseca Setyo Budi Santoso Setyo Budi Santoso Setyo Budi Santoso Setyo Budi Santoso Setyo Budi Santoso Siram Solecha, Maratus Siswanto Siswanto Siswanto Siswanto Siswanto Soekamto, Muhammad Bagus Bima Sousa , David Sri Wiyatiningsih Suwandi, ' Syekhfani, . Widiwurjani Windriyanti, Wiwin Wuwut Guntoro Zaenal Kusuma Zaenal Kusuma