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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Main Authors: Hyo Kyung Jee, Han Na Kim, Jin Hee Park
Format: Article
Language:English
Published: SpringerOpen 2024-12-01
Series:Applied Biological Chemistry
Subjects:
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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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