Hydrogen Sulfide Adsorption by Iron Oxides and Their Polymer Composites: A Case-Study Application to Biogas Purification

被引：21

作者：

Costa, Camilla ^{[1
]}

Cornacchia, Matteo ^{[1
]}

Pagliero, Marcello ^{[1
]}

Fabiano, Bruno ^{[2
]}

Vocciante, Marco ^{[1
]}

Reverberi, Andrea Pietro ^{[1
]}

机构：

[1] Univ Genoa, Dept Chem & Ind Chem, DCCI, Via Dodecaneso 31, I-16146 Genoa, Italy

[2] Univ Genoa, Dept Civil Chem & Environm Engn, Polytech Sch, DICCA, Via Opera Pia 15, I-16145 Genoa, Italy

来源：

MATERIALS | 2020年 / 13卷 / 21期

关键词：

hydrogen sulfide; biogas; adsorption; fixed bed; breakthrough curve; green technology; ROOM-TEMPERATURE; H2S ADSORPTION; REMOVAL; DESULFURIZATION; NANOPARTICLES; BREAKTHROUGH;

D O I：

10.3390/ma13214725

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An experimental study of hydrogen sulfide adsorption on a fixed bed for biogas purification is proposed. The adsorbent investigated was powdered hematite, synthesized by a wet-chemical precipitation method and further activated with copper (II) oxide, used both as produced and after pelletization with polyvinyl alcohol as a binder. The pelletization procedure aims at optimizing the mechanical properties of the pellet without reducing the specific surface area. The active substrate has been characterized in its chemical composition and physical properties by X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM), thermogravimetric analysis (TGA) and N-2 physisorption/desorption for the determination of surface area. Both powders and pellets have been tested as sorbents for biogas purification in a fixed bed of a steady-state adsorption column and the relevant breakthrough curves were determined for different operating conditions. The performance was critically analyzed and compared with that typical of other commercial sorbents based on zinc oxide or relying upon specific compounds supported on a chemically inert matrix (SulfaTreat(R)). The technique proposed may represent a cost-effective and sustainable alternative to commercial sorbents in conventional desulphurization processes.

引用

页码：1 / 15

页数：15

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