Preparation Of Carbon Castor Oil Extraction Waste Material And Its Adsorption Property To Sc³⁺

Scandium with more than 800 kinds of mineral resources is difficult to extract due to too much dispersion.The red mud produced by alkali leaching in bauxite is one of the important scandium sources.At the other hand,the content of scandium in scandium alloy is more than 0.1%.It is indispensable to study the separation and enrichment of scandium from the aluminum scandium mixture.In this paper,castor oil extraction waste?BM?as raw material,The precursors were prepared by four different activation methods,In a nitrogen atmosphere at high temperature carbonization of carbon material AC_BM.The BM carbon materials were characterized by thermogravimetric analyzer,Raman spectroscopy,static nitrogen adsorber,infrared spectroscopy,scanning electron microscopy.By static and dynamic two kinds of ion adsorption method,discussed identification and Bonding Properties of Sc³⁺ by Carbon Substrate AC_BM.The research contents mainly include the following four parts.LiOH,NaOH,KOH were activated by pretreatment of BM to prepare the precursors to carbonize three carbon materials,Which KOH activation pretreatment BM preparation precursor carbonization of carbon material AC_BM-K adsorption to Sc³⁺ and no adsorption of Al³⁺,conforms to the recognition of Sc³⁺,Carbonate Na₂CO₃,NaHCO₃,?NH₄?₂CO₃ were activated by pretreatment of BM prepared by carbonization of the three carbon materials to Al³⁺,Sc³⁺ adsorption performance are different.In order to improve the identification of Sc³⁺ by AC_BM-K.Researched KOH activation pretreatment BM process to increase the mechanical stirring effect of the preparation of precursors,preparation of carbon material AC_BM-KJ by high temperature carbonization.The results show that the adsorption capacity of AC_BM-KJ on Sc³⁺ was obviously enhanced,and the adsorption capacity was 17.75 mg·g-1,the adsorption performance of Al³⁺ is slightly changed,and the adsorption capacity was 2.10 mg·g-1.Researched the precursors were prepared during KOH activation pretreatment BMadd the organic solvent with swelling,crosslinking and protection,preparation of carbon materials by high temperature carbonization.The results showed thatthe precursor was prepared by adding liquid paraffin to the KOH activation pretreatment process,preparation of carbon material AC_BM-SL by high temperature tarbonization.The adsorption of Sc³⁺ by AC_BM-SL was obviously enhancedand the adsorption capacity was 16.90 mg·g-1,the adsorption performance of Al³⁺ is slightly changedand the adsorption capacity was 1.95 mg·g-1.Study on the preparation of precursors by KOH and mechanical agitation at the same time activation pretreatment BM.Carbon material AC_BM-KJ prepared by high temperature carbonization,Identification and Bonding Properties of Al³⁺,Sc³⁺ by Carbon Material AC_BM – KJ.The results show that during the preparation of AC_BM-KJ,when the BM: KOH ratio is 2: 1 and the carbonization temperature is 600?,The carbonized AC_BM-KJ-600 has good adsorption to Sc³⁺and the adsorption capacity is 22.40 mg·g-1,and it has good reproducibility and reusability.In addition,the carbon material AC_BM-KJ-600 has a unique selectivity for Sc³⁺.In the Sc³⁺/Al³⁺ binary ion mixed solution,the selectivity coefficient of adsorbed Sc³⁺ for AC_BM-KJ-600 was 21.23.Study on t he preparation of precursors by KOH and Liquid Paraffin Simultaneous Activation Pretreatment.Carbon material AC_BM-SL prepared by high temperature carbonization,Identification and Bonding Properties of Al³⁺,Sc³⁺ by Carbon Material AC_BM-SL.The results show that during the preparation of AC_BM-SL,when the BM: KOH ratio is 2: 1 and the carbonization temperature is 600 ?,The carbonized AC_BM-SL-600 has good adsorption to Sc³⁺and the adsorption capacity is 32.00 mg·g-1,and it has good reproducibility and reusability.In addition,the carbon material AC_BM-SL-600 has a unique selectivity for Sc³⁺.In the Sc³⁺/Al³⁺ binary ion mixed solution,the selectivity coefficient of adsorbed Sc³⁺ for AC_BM-SL-600 was 62.74.The industrial simulated dynamic adsorption experiments of AC_BM-KJ-600 and AC_BM-SL-600 showed that: Carbon material AC_BM-KJ-600,AC_BM-SL-600 at 52 BV,62BV adsorption up t o saturation;With 2 mol·L-1 hydrochloric acid solution as eluent at 5BV,10 BV when the resolution of up to 99%.