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A novel type of organic binder, modified humic acid (MHA), has been developed and patented in China. Humic acid (HA) is one of the main active fractions in the MHA binder. In this study, adsorption of HA onto natural magnetite, hematite and quartz surfaces as a function of initial HA concentration was comparatively investigated. It was found that the initial HA concentration has a positive effect...
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