Immobilization of manganese in solution and soil contaminated with trivalent chromium using biochars
Abstract Mn (manganese) exists in various oxidation states in soil, and Mn2+ is the most mobile species of Mn, which is toxic to plants and restricts their growth. When soil is contaminated with trivalent chromium (Cr3+), Mn oxides in the soil are reduced to Mn2+ by oxidizing Cr3+ while oxidized Cr...
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2024-12-01
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Online Access: | https://doi.org/10.1186/s13765-024-00969-5 |
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author | Hyo Kyung Jee Han Na Kim Jin Hee Park |
author_facet | Hyo Kyung Jee Han Na Kim Jin Hee Park |
author_sort | Hyo Kyung Jee |
collection | DOAJ |
description | Abstract Mn (manganese) exists in various oxidation states in soil, and Mn2+ is the most mobile species of Mn, which is toxic to plants and restricts their growth. When soil is contaminated with trivalent chromium (Cr3+), Mn oxides in the soil are reduced to Mn2+ by oxidizing Cr3+ while oxidized Cr is subsequently reduced back to Cr3+ by organic matter in soil, leaving Mn2+ and Cr3+ in the soil. Therefore, the objective of this study was to immobilize Mn2+ without altering the Cr species in the soil and to evaluate the effectiveness of biochar treatment in immobilizing both Mn2+ and Cr³⁺ in Cr³⁺-contaminated soil. Biochars derived from different sources including rice bran (RB), chicken manure (CM) and cow manure (WM) were tested for Mn adsorption and the chicken manure derived-biochar showed the highest removal efficiency (100%) for Mn in Mn solution. Moreover, 100% of both Mn²⁺ and Cr³⁺ were removed in Mn²⁺ and Cr³⁺ mixed solution without oxidizing Cr3+. In Mn2+ and Cr3+ mixed solution, initially 1.7% of Cr³⁺ was oxidized to Cr⁶⁺ by Mn, which was subsequently reduced back to Cr³⁺ by biochar, leading to its complete adsorption. In Cr3+ spiked soils treated with 5% and 10% CM biochar, bioavailable Mn and Cr concentrations were significantly reduced. Therefore, biochar is a promising amendment for reducing the bioavailability of Mn and Cr limiting Cr3+ oxidation in Cr3+ contaminated soils. |
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language | English |
publishDate | 2024-12-01 |
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series | Applied Biological Chemistry |
spelling | doaj-art-298599e0702b41f7bc051358feb3cce12025-01-05T12:43:57ZengSpringerOpenApplied Biological Chemistry2468-08422024-12-016711910.1186/s13765-024-00969-5Immobilization of manganese in solution and soil contaminated with trivalent chromium using biocharsHyo Kyung Jee0Han Na Kim1Jin Hee Park2Department of Environmental and Biological Chemistry, Chungbuk National UniversityDepartment of Environmental and Biological Chemistry, Chungbuk National UniversityDepartment of Environmental and Biological Chemistry, Chungbuk National UniversityAbstract Mn (manganese) exists in various oxidation states in soil, and Mn2+ is the most mobile species of Mn, which is toxic to plants and restricts their growth. When soil is contaminated with trivalent chromium (Cr3+), Mn oxides in the soil are reduced to Mn2+ by oxidizing Cr3+ while oxidized Cr is subsequently reduced back to Cr3+ by organic matter in soil, leaving Mn2+ and Cr3+ in the soil. Therefore, the objective of this study was to immobilize Mn2+ without altering the Cr species in the soil and to evaluate the effectiveness of biochar treatment in immobilizing both Mn2+ and Cr³⁺ in Cr³⁺-contaminated soil. Biochars derived from different sources including rice bran (RB), chicken manure (CM) and cow manure (WM) were tested for Mn adsorption and the chicken manure derived-biochar showed the highest removal efficiency (100%) for Mn in Mn solution. Moreover, 100% of both Mn²⁺ and Cr³⁺ were removed in Mn²⁺ and Cr³⁺ mixed solution without oxidizing Cr3+. In Mn2+ and Cr3+ mixed solution, initially 1.7% of Cr³⁺ was oxidized to Cr⁶⁺ by Mn, which was subsequently reduced back to Cr³⁺ by biochar, leading to its complete adsorption. In Cr3+ spiked soils treated with 5% and 10% CM biochar, bioavailable Mn and Cr concentrations were significantly reduced. Therefore, biochar is a promising amendment for reducing the bioavailability of Mn and Cr limiting Cr3+ oxidation in Cr3+ contaminated soils.https://doi.org/10.1186/s13765-024-00969-5AdsorptionChicken manure derived-biocharMetalRedox reactionToxicity |
spellingShingle | Hyo Kyung Jee Han Na Kim Jin Hee Park Immobilization of manganese in solution and soil contaminated with trivalent chromium using biochars Applied Biological Chemistry Adsorption Chicken manure derived-biochar Metal Redox reaction Toxicity |
title | Immobilization of manganese in solution and soil contaminated with trivalent chromium using biochars |
title_full | Immobilization of manganese in solution and soil contaminated with trivalent chromium using biochars |
title_fullStr | Immobilization of manganese in solution and soil contaminated with trivalent chromium using biochars |
title_full_unstemmed | Immobilization of manganese in solution and soil contaminated with trivalent chromium using biochars |
title_short | Immobilization of manganese in solution and soil contaminated with trivalent chromium using biochars |
title_sort | immobilization of manganese in solution and soil contaminated with trivalent chromium using biochars |
topic | Adsorption Chicken manure derived-biochar Metal Redox reaction Toxicity |
url | https://doi.org/10.1186/s13765-024-00969-5 |
work_keys_str_mv | AT hyokyungjee immobilizationofmanganeseinsolutionandsoilcontaminatedwithtrivalentchromiumusingbiochars AT hannakim immobilizationofmanganeseinsolutionandsoilcontaminatedwithtrivalentchromiumusingbiochars AT jinheepark immobilizationofmanganeseinsolutionandsoilcontaminatedwithtrivalentchromiumusingbiochars |