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Discovering the Interference of Hydrogen Sulfide on Polyethylenimine-Functionalized Porous Resin for Biogas Upgrading via CO2 Adsorption
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-09-23 , DOI: 10.1021/acssuschemeng.1c04089 Yuan Meng 1 , Tongyao Ju 1 , Siyu Han 1 , Yufeng Du 1 , Fanzhi Meng 1 , Jianguo Jiang 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-09-23 , DOI: 10.1021/acssuschemeng.1c04089 Yuan Meng 1 , Tongyao Ju 1 , Siyu Han 1 , Yufeng Du 1 , Fanzhi Meng 1 , Jianguo Jiang 1
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Because of the considerable CO2 adsorption capacity, selectivity, and stability, amine-functionalized materials have been recently investigated as promising adsorbents for biogas upgrading to biomethane, which provides the preferred gaseous bioenergy resource. Nevertheless, the typical impurity in biogas, H2S, has a potential influence on biogas upgrading, as another acid component to react with amines besides CO2. After all, even the trace H2S after biogas desulfurization might have an accumulative effect, based on previous experience in studying other acid impurities. Herein, we explored the interference of H2S (5–5000 ppm) on the prepared polyethylenimine-functionalized porous resin (PEI/HP20), which has exhibited excellent performance for biogas upgrading. The distinct of adsorption capacity, kinetic behavior, and regeneration performance between the two reactive components (CO2 and H2S) in biogas was systemically investigated. It was found that, in contrast with CO2, the adsorbed H2S on PEI/HP20 was not comparable through slow single-stage kinetic behavior and had limited impact, especially in consideration of the practical biogas upgrading within finite time. Besides, the reversible binding of H2S, proved by the regeneration performance and chemical characterization, was also favorable and pivotal for the PEI/HP20. In addition, the stable operation (capacity loss of 1%) by continuous adsorption–regeneration cycles under H2S-containing simulated biogas have finally demonstrated the ignorable interference of H2S on PEI/HP20, manifesting its strong adaptability in biogas upgrading.
中文翻译：
发现硫化氢对通过 CO2 吸附提纯沼气的聚乙烯亚胺功能化多孔树脂的干扰
由于具有相当大的 CO 2吸附能力、选择性和稳定性，胺官能化材料最近被研究作为用于将沼气升级为生物甲烷的有前途的吸附剂，生物甲烷提供了首选的气态生物能源。然而，沼气中的典型杂质 H 2 S 对沼气提质具有潜在影响，作为除 CO 2之外的另一种与胺反应的酸组分。毕竟，根据以往研究其他酸性杂质的经验，即使是沼气脱硫后的痕量H 2 S也可能具有累积效应。在此，我们探讨了 H 2的干扰S (5–5000 ppm) 在制备的聚乙烯亚胺官能化多孔树脂 (PEI/HP20) 上，其在沼气升级方面表现出优异的性能。系统研究了沼气中两种反应组分（CO 2和H 2 S）之间的吸附能力、动力学行为和再生性能的差异。结果发现，与 CO 2 相比，PEI/HP20 上吸附的 H 2 S 无法通过缓慢的单级动力学行为进行比较，并且影响有限，特别是考虑到有限时间内的实际沼气升级。此外，H 2的可逆结合S，由再生性能和化学特性证明，对 PEI/HP20 也是有利和关键的。此外，在含H 2 S模拟沼气下连续吸附-再生循环的稳定运行（容量损失1%）最终证明了H 2 S对PEI/HP20的干扰可忽略不计，表明其在沼气提纯中具有很强的适应性。
更新日期：2021-11-08
中文翻译：
发现硫化氢对通过 CO2 吸附提纯沼气的聚乙烯亚胺功能化多孔树脂的干扰
由于具有相当大的 CO 2吸附能力、选择性和稳定性，胺官能化材料最近被研究作为用于将沼气升级为生物甲烷的有前途的吸附剂，生物甲烷提供了首选的气态生物能源。然而，沼气中的典型杂质 H 2 S 对沼气提质具有潜在影响，作为除 CO 2之外的另一种与胺反应的酸组分。毕竟，根据以往研究其他酸性杂质的经验，即使是沼气脱硫后的痕量H 2 S也可能具有累积效应。在此，我们探讨了 H 2的干扰S (5–5000 ppm) 在制备的聚乙烯亚胺官能化多孔树脂 (PEI/HP20) 上，其在沼气升级方面表现出优异的性能。系统研究了沼气中两种反应组分（CO 2和H 2 S）之间的吸附能力、动力学行为和再生性能的差异。结果发现，与 CO 2 相比，PEI/HP20 上吸附的 H 2 S 无法通过缓慢的单级动力学行为进行比较，并且影响有限，特别是考虑到有限时间内的实际沼气升级。此外，H 2的可逆结合S，由再生性能和化学特性证明，对 PEI/HP20 也是有利和关键的。此外，在含H 2 S模拟沼气下连续吸附-再生循环的稳定运行（容量损失1%）最终证明了H 2 S对PEI/HP20的干扰可忽略不计，表明其在沼气提纯中具有很强的适应性。
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