A hybrid sorbent material for removal of hydrogen sulfide from air was developed. The material is based on activated carbon and iron compounds obtained from waste iron(II) sulfate(VI) heptahydrate. The iron salt is deposited on the carbonaceous support and subjected to oxidation (Fe²⁺ to Fe³⁺) using atmospheric oxygen under alkaline conditions. An effect of H₂O₂ addition to the process on the composition of the resultant material was also examined. X‐ray diffraction (XRD) analyses confirmed easy conversion of waste FeSO₄·7H₂O to iron oxides Fe₃O₄ and FeOOH. The activated carbon supporting iron oxides revealed a higher efficiency in H₂S elimination from air compared to the commercial activated carbon, without any modification.

中文翻译：

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二氧化钛生产中的硫酸铁（VI）用作制备硫化氢吸附剂的原料

开发了一种用于从空气中去除硫化氢的杂化吸附剂材料。该材料基于从七水合硫酸铁（VI）废料中获得的活性炭和铁化合物。铁盐沉积在碳质载体上，并在碱性条件下使用大气氧进行氧化（Fe ²⁺至Fe ³⁺）。还检查了H ₂ O _2的添加对所得材料的组成的影响。X射线衍射（XRD）分析证实了废FeSO ₄ ·7H ₂ O易于转化为氧化铁Fe ₃ O ₄和FeOOH。与未作任何改性的市售活性炭相比，该活性炭支撑氧化铁显示出更高的从空气中去除H ₂ S的效率。