Natural and low-cost sorbents as part of the solution for biogas upgrading: A review

IF 3 4区 工程技术 Q3 CHEMISTRY, PHYSICAL
Register Mrosso, Achisa C. Mecha, Joseph Kiplagat
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引用次数: 0

Abstract

The availability of pollutants in biogas especially carbon dioxide hinders its application in the enginery parts by minimizing its calorific standards. The presence of CO2 contributes to global warming which is a worry globally. Thus, upgrading technologies is needed for safe utilization on small-scale and wide-range. The commercial technologies mostly discussed in the literature are pressure swing adsorption, membrane separation, physical scrubbing, and water scrubbing. These techniques are costly concerning investment, and operation costs, and are energy-intensive, especially on a small scale. Thus, difficult to apply especially in low-income economies, and necessitates the development of natural, low-cost sorbents for biogas upgrading like biomass, eggshell waste, and clay soil. The current review critically evaluates the potentiality of new approaches using low-cost sorbents for biogas upgrading. The review proposed that activating and additional of pore-forming materials in the adsorbents is necessary to significantly enhance their performance.

Abstract Image

Abstract Image

天然低成本吸附剂是沼气提纯解决方案的一部分:综述
沼气中的污染物(尤其是二氧化碳)会降低沼气的热量标准,从而阻碍沼气在发动机部件中的应用。二氧化碳的存在会导致全球变暖,这在全球范围内都是一个令人担忧的问题。因此,需要采用升级技术来实现小规模和大范围的安全利用。文献中讨论最多的商业技术是变压吸附、膜分离、物理洗涤和水洗涤。这些技术的投资和运行成本都很高,而且是能源密集型的,尤其是在小规模使用时。因此,特别是在低收入经济体中很难应用,这就需要开发天然、低成本的沼气升级吸附剂,如生物质、蛋壳废料和粘土。本综述严格评估了使用低成本吸附剂进行沼气提纯的新方法的潜力。综述提出,要显著提高吸附剂的性能,就必须激活吸附剂并在吸附剂中添加形成孔隙的材料。
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来源期刊
Adsorption
Adsorption 工程技术-工程:化工
CiteScore
8.10
自引率
3.00%
发文量
18
审稿时长
2.4 months
期刊介绍: The journal Adsorption provides authoritative information on adsorption and allied fields to scientists, engineers, and technologists throughout the world. The information takes the form of peer-reviewed articles, R&D notes, topical review papers, tutorial papers, book reviews, meeting announcements, and news. Coverage includes fundamental and practical aspects of adsorption: mathematics, thermodynamics, chemistry, and physics, as well as processes, applications, models engineering, and equipment design. Among the topics are Adsorbents: new materials, new synthesis techniques, characterization of structure and properties, and applications; Equilibria: novel theories or semi-empirical models, experimental data, and new measurement methods; Kinetics: new models, experimental data, and measurement methods. Processes: chemical, biochemical, environmental, and other applications, purification or bulk separation, fixed bed or moving bed systems, simulations, experiments, and design procedures.
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