Department of Chemical & Biomedical Engineering, University of South Florida, Tampa, FL 33620, United States; T2C-Energy, LLC, 3802 Spectrum Blvd Suite 128p, Tampa, FL 33612, United States.
Department of Chemical & Biomedical Engineering, University of South Florida, Tampa, FL 33620, United States.
Waste Manag. 2017 May;63:246-256. doi: 10.1016/j.wasman.2017.02.001. Epub 2017 Feb 10.
Waste-to-energy projects are an increasingly prominent component of future energy portfolios. Landfill gas (LFG)-to-energy (LFGTE) projects are particularly important as they address greenhouse gas emissions. Contaminants in LFG may hamper these projects both from environmental and economic standpoints. The purpose of this review is to highlight key aspects (LFG composition ranges, LFG flowrates, and allowable tolerances for LFGTE technologies, performance and costs for contaminant removal by adsorption). Removal of key contaminants, HS and siloxanes, by adsorption are surveyed in terms of adsorption capacities and regeneration abilities. Based on the open literature, costing analyses are tabulated and discussed. The findings indicate economics of contaminant removal depend heavily on the feed concentrations of contaminants, allowable tolerances for the LFGTE technology, and the current market for the product. Key trends, identification of challenges, and general purification guidelines for purifying LFG for energy projects are also discussed.
垃圾能源转化项目是未来能源组合中越来越重要的组成部分。垃圾填埋气（LFG）能源转化（LFGTE）项目尤为重要，因为它们可以解决温室气体排放问题。从环境和经济的角度来看，LFG 中的污染物可能会阻碍这些项目的进行。本综述的目的是突出关键方面（LFG 组成范围、LFG 流量和 LFGTE 技术的允许公差、吸附去除污染物的性能和成本）。根据开放文献，调查了吸附去除关键污染物（HS 和硅氧烷）的吸附容量和再生能力。根据公开文献，列出并讨论了成本分析。研究结果表明，污染物去除的经济性在很大程度上取决于污染物的进料浓度、LFGTE 技术的允许公差以及产品的当前市场。还讨论了用于能源项目净化 LFG 的关键趋势、挑战识别和一般净化指南。
