2026-10-12T10:32:31Z https://api.figshare.com/v2/oai

oai:figshare.com:article/25265857 2026-09-17T13:47:04Z category_26986 portal_753 item_type_3 month_year_09_2026

Neutralization of synthetic acid mine drainage in the development of soil liming strategies for irrigation Vibhishan Moodley (18009319) Soil chemistry and soil carbon sequestration (excl. carbon sequestration science) Titrations Buffering Neutralization Liming Soil SDG 9 Industry, innovation and infrastructure SDG 15 Life on land <p dir="ltr">An alternative mine water management and treatment strategy is to irrigate with untreated acid mine water (AMD) on soil that has been treated with liming material. Hence, the aim of this study is the development of soil liming strategies for irrigation with acid mine drainage. This has been investigated by undertaking titrations to quantify the additional acidity generated by Fe, Al, and Mn present in AMD and how this buffers the neutralising potential of hydrated lime. The hypothesis states that iron is expected to have the most significant buffering influence on the neutralising potential of hydrated lime compared to aluminium and manganese as its oxidation, hydrolysis and precipitation is strongly acidifying. This hypothesis was accepted. It was demonstrated that Fe has the potential to buffer the neutralisation potential of hydrated lime because of two acid generating influences, namely the ferric and ferrous iron buffers with each of them influencing the potential of hydrated lime below a neutral condition. The titration experiments also showed that 2.96 mmol of acidity can be generated per mmol of Mn in solution, 2.56 mmol of acidity can be generated per mmol of Fe in solution, and 3,36 mmol of acidity can be generated per mmol of Al in solution.</p> 2026-09-17T13:47:04Z Dataset Dataset 10.25403/UPresearchdata.25265857.v1 https://figshare.com/articles/dataset/Neutralization_of_synthetic_acid_mine_drainage_in_the_development_of_soil_liming_strategies_for_irrigation/25265857 CC BY 4.0