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首页> 外文期刊>Journal of the Air & Waste Management Association >Modeling landfill gas potential and potential energy recovery from Thohoyandou landfill site, South Africa
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Modeling landfill gas potential and potential energy recovery from Thohoyandou landfill site, South Africa

机译：南非大陆楼网站造型垃圾填埋气体潜力和潜在能源回收

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摘要

The increase in solid waste generation has been a major contributor to the amount of Greenhouse gases (GHGs) present in the atmosphere. To some extent, a great chunk of these GHGs in the atmosphere is from landfill. This study assesses two theoretical models (LandGEM and Afvalzorg models) to estimate the amount of landfill gas (LFG) emitted from Thohoyandou landfill site. Also, the LFGcost Web model was used to estimate the cost and benefits of the implementation of an LFG utilization technology. The Thohoyandou landfill started operations in the year 2005 and it is proposed to reach its peak at approximately in the year 2026. The LandGEM calculates the mass of landfill gas emission using methane generation capacity, mass of deposited waste, methane generation constant and methane generation rate. Meanwhile, the Afvalzorg model determines the LFG emissions using the Methane correction factor, yearly waste mass disposal, waste composition, Degradation Organic Carbon, methane generation rate constant, LFG recovery efficiency. The study findings indicate that the methane (CH_4) and carbon dioxide (CO_2) emitted from the landfill estimated from LandGEM will peak in the year 2026 with values of 3517 Mg/year and 9649 Mg/year, respectively. Results from the Afvalzorg model show that CH_4 emission will peak in the year 2026 (3336 Mg/year). The LandGEM model showed that the total LFG, CH_4 and CO_2 emitted from the landfill between 2005 and 2040 are 293239.3 Mg/year, 78325.7 Mg/year and 214908.6 Mg/year, respectively. The simulation from the Afvalzorg model found that the CH_4 emitted from the years 2005- 2040 is 74302 Mg/year. The implementation of an LFG utilization technology was economically feasible from consideration of the sales of electricity generated and Certified Emission Reductions (CER) (carbon credits). Implications: The methane (CH_4) and carbon dioxide (CO_2) emitted from the Thohoyandou landfill estimated from LandGEM will peak in the year 2026 at 3517 Mg/year and 9649 Mg/year, respectively. The Afvalzorg model shows that CH_4 emission will peak in the year 2026 (3336 Mg/ year). The LandGEM model showed that total LFG, CH_4 and CO_2 emitted from the landfill between 2005 and 2040 (Mg/year) are 293,239, 78,325 and 214,908, respectively. The simulation from the Afvalzorg model found that CH_4 emitted from years 2005- 2040 is 74,302 Mg/year. Therefore, implementation of LFG utilization is economically feasible from sales of electricity generated and Certified Emission Reductions.
机译：固体废物产生的增加是大气中存在的温室气体（GHG）的主要贡献者。在某种程度上，大气中这些温室气体的大块来自垃圾填埋场。本研究评估了两个理论模型（Landgem和Afvalzorg模型），以估算Thohoyandou垃圾填埋场发出的垃圾填埋气体（LFG）的数量。此外，LFGCost Web模型用于估计LFG利用技术实现的成本和益处。 Thohohoyandou垃圾填埋场在2005年开始运营，建议在2026年大约达到其高峰期。固定液使用甲烷发电容量，沉积废物质量，甲烷生成恒定和甲烷生成率来计算垃圾填埋气体排放量。同时，AFValzorg模型使用甲烷校正因子，每年废弃物校正，废物组成，降解有机碳，甲烷生成率恒定，LFG回收效率来确定LFG排放。该研究结果表明，从Langem估计的垃圾填埋场排出的甲烷（CH_4）和二氧化碳（CO_2）将在2026年中达到3517毫克/岁和9649毫克/年。 AFValzorg模型的结果表明，CH_4排放将在2026年（3336毫克/年）中达到峰值。 Landgem模型表明，2005年至2040年间填埋场排放的总LFG，CH_4和CO_2分别为293239.3毫克/秒，78325.7毫克/年和214908.6毫克/年。来自AFValzorg模型的模拟发现，从2005-2040年散发出来的CH_4为74302毫克/年。利用LFG利用技术的实施是从考虑到发电和认证减排（CER）（碳信用）的销售情况的经济上可行。含义：从Langem估计的Thohoyandou垃圾填埋场排放的甲烷（CH_4）和二氧化碳（CO_2）将分别在2026年达到3517毫克/岁至9649毫克/年。 Afvalzorg模型表明，CH_4排放将在2026年（3336毫克/年）中达到峰值。 Landgem模型表明，2005年至2040年（MG / Bird）之间的垃圾填埋场排放的总LFG，CH_4和CO_2分别为293,239,78,325和214,908。来自AFValzorg模型的模拟发现，从2005年至2040年发出的CH_4为74,302毫克/年。因此，利用LFG利用的实施是从产生和认证减排的电力销售中经济上可行。

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    Prince Obinna Njoku; Joshua Nosa Edokpayi; John Ogony Odiyo;

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    School of Environmental Sciences Department of Ecology and Resource Management University of Venda Thohoyandou South Africa;

    School of Environmental Sciences Department of Hydrology and Water Resources University of Venda Thohoyandou South Africa;

    School of Environmental Sciences Department of Hydrology and Water Resources University of Venda Thohoyandou South Africa;

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