可持续的二氧化碳利用和从碳化废水中回收碳酸
Kamchai Nuithitikul1, Peerapong Jitsangiam2,3, Pumipat K Pachana4,5
1Biomass and Oil Palm Center of Excellence, School of Engineering and Technology, Walailak University, Nakhon Si Thammarat 80160, Thailand.
iScience
|April 15, 2025
概括
碳化残留废水可以通过二氧化碳碳化转化为碳酸. 回收该过程是可行的,但需要稀释来管理杂质并优化碳酸产量.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 碳化残留 (CCR) 废水是乙生产的副产品,由于土壤性增加,这给环境带来了挑战.
- 目前的CCR处置方法,主要是氧化泥,是不可持续的,并导致废水问题.
研究的目的:
- 研究CCR废水通过CO2碳化转化为有价值的碳酸 (CaCO3).
- 评估三甲胺 (TEA) 对CaCO3沉和晶体形态的影响.
- 评估回收碳化过程的可行性,以提高资源可持续性.
主要方法:
- CCR废水经过二氧化碳碳化,有或没有TEA.
- 碳化溶液被过,在某些情况下加热 (80°C),并经过多次溶解-碳化循环.
- 在每个循环后,分析了碳酸产量和晶体结构.
主要成果:
- TEA促进了立方石的形成,但在重复使用后的CaCO3沉仅在非TEA溶液中取得了成功.
- 在连续循环循环中积累的杂质减少了CCR溶解和CaCO3形成.
- 加热溶液的最大CaCO3产量为23.0%,非加热溶液的最大产量为36.6%.
结论:
- 碳化CCR废水的碳化是一种生产碳酸的可行方法.
- 工艺回收是可能的,但需要用原水稀释以减轻杂质的积累和优化产量.
- 为了实现可持续的CCR废水利用,需要进一步优化回收条件.
更多相关视频
08:00Author Spotlight: Standardizing the Development of Amine-Based Silica Composites as CO2 Adsorbents for Direct Air Capture
Published on: September 29, 2023
2.2K
06:34Operation of a 25 KWth Calcium Looping Pilot-plant with High Oxygen Concentrations in the Calciner
Published on: October 25, 2017
7.8K
相关概念视频
Sustainable Development
13.1K
As the human population continues to grow and use resources, we must be mindful of our planet’s natural limits. Sustainable development provides a pathway to maintain and improve human life now while also ensuring that future generations will have the resources that they need. The long-term success of sustainability efforts rests on understanding the interplay between human actions and ecological systems.
13.1K
Design Example: Sustainability in Concrete Building
144
As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
144
The Carbon Cycle
36.6K
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.
36.6K
Bioremediation
18.1K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.1K
Conservation of Energy
8.7K
The terms 'conserved quantity' and 'conservation law' have specific scientific meanings in physics, which differ from the meanings associated with their everyday use. For example, in everyday usage, water could be conserved by not using it, by using less of it, or by re-using it. However, in scientific terms, a conserved quantity of a system stays constant, changes by a definite amount that is transferred to other systems, and is converted into other forms of that...
8.7K
Cohesion
50.3K
Cohesion is the attraction between molecules of the same type, such as water molecules. Water molecules have an overall neutral charge but are polar molecule. An oxygen atom in one water molecule has a partial negative charge that can bind to a hydrogen atom with a partial positive charge in a second water molecule, forming a hydrogen bond. Each water molecule can form up to four hydrogen bonds with other water molecules. Hydrogen bonds are responsible for water's cohesive nature.
On a...
On a...
50.3K
