如何将泛米蛋糕用于去除二氧化碳？

In a review recently published in the open-access journalEnergies，研究人员讨论了基于水稻产品的实用性，以开发用于捕获CO的新方法。₂来自废气的气体。

学习：捕获CO的新方法₂来自使用水稻产品的废气。Image Credit: Sarah Marchant/Shutterstock.com

Background

The United Nations' Food and Agriculture Organization (FAO) released a report in 2019 on the major drivers of global food waste, estimating that one-third of all food produced each year is wasted or lost. Food production and disposal necessitate a significant amount of land, energy, soil, and water. Greenhouse gases are produced by all parts of the food chain, and they all contribute to global warming.

CO₂emissions are known as a substantial contributor to change in climate and efforts to reduce them are proving insufficient in combating global warming. Hence, many ways of removing CO₂已经提出了来自环境。二氧化碳的固相（CO₂) from power plants is one of the strategies that can be implemented to reduce CO₂排放。但是，有效CO需要渗透性膜和高选择性₂分离。市场上至少有40％的米饭被扔掉，增加了该国的公司₂排放。Evidently, there is great potential for ecologically beneficial and cost-effective rice waste reuse.

About the Study

在这项研究中，作者提供了一个新颖的公司₂拆除技术基于特定的气体接触装置，该设备装有带有缓冲的泡沫蛋糕，这是通过在高压下在特殊建造的密封室中加热而产生的，以获得9-12毫米厚度的层。之后，将蛋糕浸入氢氧化钠液体（0.25-2.5 m）中，以将水分含量提高到5％，将pH提高到> 11.0。在试验中评估了不同的水稻结构（水稻粒，堆叠层和多间隔层），该试验使CO不同₂在1-15％范围内模拟的废气中的比例。

最终产生的样品尺寸，形状和厚度。图片来源：Mohammad，A。F等人，能量

团队提出了一个概念，以降低CO的成本和能耗₂与传统方法相比，去除效率很高。拟议中的公司₂removal process was based on a rice-based treated product in a unique gas-contact medium design and structure. Rice products were made and puffed before being buffered with a NaOH solution. The proposed CO₂在各种气体流速和NAOH摩尔力设置下测试了去除过程。

因此，作者为CO开发了一种具有成本效益，生态友好且随时可用的技术₂利用水稻废物从废气中捕获。建议采用一种新颖的技术，以帮助食品废物管理部门的众多行业以及气体排放控制机构的发展。

新鲜的水稻样品和用氢氧化钠处理的样品。图片来源：Mohammad，A。F等人，能量

Observations

With 10% CO₂and a 500 mL/min flow rate, the highest CO₂吸收值7.52 x 10^-3mole co₂/cm²rice cake surface area was acquired with rice cakes having 80 mm diameter and 12 mm thick layers which occupied 20% of the device capacity. Using stacked layers of puffed rice cakes buffered with 0.5 M NaOH solution and a 500 mL/min flow rate of effluent gas, the CO₂level in a gas effluent was reduced by 38%, which corresponded to CO₂7.52 x 10的加载^-3mole co₂/cm²of rice cake.

大米结构内的空隙和壁的存在也通过形态分析揭示了，因为在显微照片中观察到了黑色和白色。与新鲜膨化的水稻样品相比，在3250-3500厘米内的峰值^-1范围表明NAOH处理增强了样品吸收范围。

Because of moisture loss and degradation of light organic components, sample mass decreased by 2.88% as the temperature increased from 20 to roughly 311°C. According to the thermogravimetric analysis, the sodium hydroxide treatment also resulted in a significant reduction in the rate of decomposition. Furthermore, mass losses decreased by nearly 30% at temperatures above 243.52°C.

带有操作选项的接触器系统的图片（（a) staked rice cake layers (b）膨化的米粒和（c）在操作条件下的多间隔层，以（300 mL/min）的气流流速为（300 mL/min）。图片来源：Mohammad，A。F等人，能量

Conclusions

In conclusion, this study elucidated a novel CO₂removal method based on passing effluent gas via a gas contact device loaded with puffed rice cakes. According to standard experimental observations, the proposed approach could help save money and energy while ensuring high CO₂removal efficiency. It was observed that by using another buffering waste material as a replacement, the cost of CO₂可以最大程度地减少去除。

作者强调需要对再生过程进行进一步的研究，应检查石灰作为再生的介质，并检查具有不同氧化钙溶液浓度的介质。他们还观察到所提出的设计具有高分子₂删除效率，并相信建议的技术和系统的好处通常是令人鼓舞的，对于进一步的研究和统计优化，以最低的运营成本来实现最高效率。

来源

Mohammad，A。F.，Saleh，A。F. D.，Khoukhi，M。等。捕获CO的新方法₂来自使用水稻产品的废气。能量15（6）2287（2022）。https://www.mdpi.com/1996-1073/15/6/2287

Disclaimer: The views expressed here are those of the author expressed in their private capacity and do not necessarily represent the views of AZoM.com Limited T/A AZoNetwork the owner and operator of this website. This disclaimer forms part of theTerms and conditionsof use of this website.