Sorption of Phosphate on Douglas Fir Biochar Treated with Magnesium Chloride and Potassium Hydroxide for Soil Amendments

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dc.contributor.authorArwenyo Beatrice 1,2 , Navarathna Chanaka 1 , Krishna Das Naba 1 , Hitt Addie1 and Mlsna Todd1,*
dc.date.accessioned2026-04-23T11:15:25Z
dc.date.available2026-04-23T11:15:25Z
dc.date.issued2023-09-19
dc.description.abstractWith increasing climate variability, a sustainable crop production approach remains an indispensable concern across the globe. In this study, P retention/availability of MgCl2.6H2O/KOH modified Douglas fir biochar was assessed. The MgCl2·6H2O/KOH treated Douglas fir biochar was prepared by sequentially treating Douglas fir biochar with magnesium chloride and potassium hydroxide solutions. The biochar’s surface area, pore volume, morphology, and elemental compositions were determined using BET, SEM, SEM/EDS, and powder X-ray analyzes. Both surface area and pore volume were reduced by more than 97% following modification. Similarly, the morphology and elemental compositions changed after modification. The maximum P adsorbed corresponding to Langmuir–Freundlich model was 41.18 mg g−1. P sorption on biochar soil mixture was pH dependent. More studies are required to establish the field applicability of P-laden MgCl2 ·6H2O/KOH-modified Douglas fir biochar as a soil additive.
dc.identifier.citationArwenyo, B.; Navarathna, C.; Das, N.K.; Hitt, A.; Mlsna, T. Sorption of Phosphate on Douglas Fir Biochar Treated with Magnesium Chloride and Potassium Hydroxide for Soil Amendments
dc.identifier.urihttp://hdl.handle.net/20.500.14270/813
dc.language.isoen
dc.publisherMDPI
dc.relation.ispartofseries11; 331
dc.subjectmodified biochar
dc.subjectsoil pH
dc.subjectP retention and P availability
dc.titleSorption of Phosphate on Douglas Fir Biochar Treated with Magnesium Chloride and Potassium Hydroxide for Soil Amendments
dc.typeArticle

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