酸度对来自Strychnos spinose果的活性炭特性的影响
John Chagu1, Alinanuswe Joel Mwakalesi2
1Department of Natural Sciences, Mbeya University of Science and Technology, P.O. Box 131, Mbeya, Tanzania.
Scientific reports
|January 6, 2026
概括
农业废物,比如Strychnos spinosa果,可以转化为活性炭. 在合成过程中,高酸度会产生活性炭,其性能和性能在各种应用中得到改善.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 农业废物积累给环境带来了挑战.
- 废物的热化学转化为活性炭提供了可持续的利用.
- 斯特里克诺斯·斯皮诺萨 (Strychnos spinosa) 的果是一个未充分利用的生物质资源.
研究的目的:
- 从Strychnos spinosa果中合成和表征活性炭.
- 为了研究酸度对活性炭特性的影响.
- 为了评估活性炭在吸附应用中的性能.
主要方法:
- 使用酸 (30-150%) 进行化学激活,然后在500°C进行物理激活.
- 使用X射线衍射,扫描电子显微镜,布鲁纳uer-Emmett-Teller和红外光谱学进行表征.
- 对产量,水分含量,灰含量和含量的分析.
主要成果:
- 活性炭产量从25.33%增加到29.2%,酸度增加.
- 较高的酸度导致湿度,灰含量和含量增加.
- 使用150%的酸获得了最高的含量 (999 mg/g) 和表面积 (507.373 m2/g),显示出较大的孔径.
结论:
- 酸度显著影响Strychnos spinosa果活性炭的特性和性能.
- 优化合成条件可以从农业废物中产生高质量的活性碳.
- 这种方法为将农业副产品转化为有价值的材料提供了一条有效的途径.
相关概念视频
03:38Polyprotic Acids
31.7K
Acids are classified by the number of protons per molecule that they can give up in a reaction. Acids such as HCl, HNO3, and HCN that contain one ionizable hydrogen atom in each molecule are called monoprotic acids. Their reactions with water are:
31.7K
02:08Titration of a Polyprotic Acid
102.9K
A polyprotic acid contains more than one ionizable hydrogen and undergoes a stepwise ionization process. If the acid dissociation constants of the ionizable protons differ sufficiently from each other, then the titration curve for such polyprotic acid generates a distinct equivalence point for each of its ionizable hydrogens. Therefore, titration of a diprotic acid results in the formation of two equivalence points, whereas the titration of a triprotic acid results in the formation of three...
102.9K
03:27Mixtures of Acids
21.5K
The pH of a solution containing an acid can be determined using its acid dissociation constant and its initial concentration. If a solution contains two different acids, then its pH can be determined using one of several methods depending upon the relative strength of the acids and their dissociation constants.
A Mixture of a Strong Acid and a Weak Acid
In a mixture of a strong acid and a weak acid, the strong acid dissociates completely and becomes a source of almost all the hydronium ions...
A Mixture of a Strong Acid and a Weak Acid
In a mixture of a strong acid and a weak acid, the strong acid dissociates completely and becomes a source of almost all the hydronium ions...
21.5K
01:19Mixtures of Acids
1.1K
The pH of a solution containing an acid can be determined using its acid dissociation constant and initial concentration. If a solution contains two different acids, then its pH can be determined using one of several methods depending on the relative strength of the acids and their dissociation constants.
In a strong and weak acid mixture, the strong acid dissociates completely and becomes a source of almost all the hydronium ions present in the solution. In contrast, the weak acid shows...
In a strong and weak acid mixture, the strong acid dissociates completely and becomes a source of almost all the hydronium ions present in the solution. In contrast, the weak acid shows...
1.1K
01:23Titration of Polyprotic Acids with a Strong Base
2.8K
Titration of a polyprotic acid, which contains multiple ionizable protons, involves distinct dissociation steps, each with its own dissociation constant (Ka). Each successive Ka is weaker than the previous one. In the titration of a polyprotic acid like sulfurous acid with a strong base such as sodium hydroxide, the base first neutralizes the initial ionizable proton, forming an intermediate species (e.g., hydrogen sulfite ions). This step's titration curve resembles that of a weak...
2.8K
01:18Titration of Polyprotic Base with a Strong Acid
4.3K
The titration of a polyprotic base such as sodium carbonate with a strong acid such as hydrochloric acid results in two equivalence points on the titration curve. At the first equivalence point, the carbonate ions in the base are completely converted to bicarbonate ions. The second equivalence point corresponds to the complete conversion of bicarbonate ions to carbonic acid, which dissociates into carbon dioxide and water. The region before the first equivalence point corresponds to the...
4.3K