食品染料在单一和三元系统中的吸附通过新浪激情果皮的生物炭吸附剂
Lucas Lacerda Cabral1, Rúbia Camila Ronqui Bottini2, Alexandre José Gonçalves3
1Federal University of Technology - Paraná (UTFPR), Environmental Sciences and Technology Graduate Program, Deputado Heitor de Alencar Furtado St., 5000, Ecoville, 81280-340 Curitiba, Paraná, Brazil.
Food chemistry
|October 15, 2024
概括
激情果皮生物炭有效地去除合成食品染料,如印地古丁蓝色,黄色和Ponceau 4R. 这种低成本的吸附剂显示出高的去除效率,为染料废水处理提供了可持续的解决方案.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 废弃物价值化 废弃物价值化 废弃物价值化
背景情况:
- 合成食品染料由于其持久性和潜在的毒性而带来了环境挑战.
- 从废水中去除这些染料的有效和可持续方法至关重要.
研究的目的:
- 评估激情果皮生物炭 (PFPB) 作为一种用于去除合成食品染料的新型吸附剂.
- 研究单一和三元系统中的染料去除,并优化吸附条件.
主要方法:
- 关于PFPB的结构性和化学性质的表征.
- 使用响应表面方法在不同pH值,吸附剂剂量和温度下进行吸附研究.
- 使用埃洛维奇和雷德利希-彼得森模型进行动力和平衡建模.
- 热力学分析以了解吸附的自发性和性质.
主要成果:
- PFPB具有具有基本功能组的宏孔结构,在pH值2.0下吸附是最佳的.
- 优化的条件预测了高的去除效率:100%的青,79.8%的黄,和84.4%的庞索4R.
- 埃洛维奇和雷德利希-彼得森模型表明化学相互作用驱动吸附.
- 吸附是内热的,自发的,并在三元系统中表现出对抗作用.
结论:
- 激情果皮生物炭是一种有前途的,低成本的吸附剂,用于合成食品染料的去除.
- 在单一和真实废水系统中,对于蓝色,黄色和ponceau 4R的高清除效率得到了实现.
- PFPB为染料污染废水的处理提供了一个可持续的替代方案.
相关概念视频
01:23Drug Absorption Mechanism: Passive Membrane Transport
Passive transport is a method of drug absorption where small, lipid-soluble drugs can move across the cell membrane. This movement happens along the concentration gradient, which is a natural flow from higher to lower concentration areas. The speed at which the drug moves is directly related to its lipid–water partition coefficient. This means that the more a drug dissolves in lipids, the faster it diffuses or spreads throughout the body. It is important to note that most drugs are either weak...
01:19Drug Absorption Mechanism: Carrier-Mediated Membrane Transport
Certain large, lipid-insoluble drug molecules that resemble amino acids, peptides, or glucose, require specialized carrier proteins to facilitate their diffusion across cell membranes. This transport can occur through either facilitated diffusion, which does not require energy input, or active transport, which does require energy input.
Facilitated diffusion is a passive process that utilizes human Solute Carrier (SLC) transporters. These transporters bind to the drug, undergo structural...
Facilitated diffusion is a passive process that utilizes human Solute Carrier (SLC) transporters. These transporters bind to the drug, undergo structural...
01:16Methods for Studying Drug Absorption: In vitro
In vitro experiments are crucial for understanding the transport and absorption of drugs through biological materials. These studies employ varied methods such as the diffusion cell method, the everted sac technique, and the everted ring technique.
The diffusion cell method uses a two-compartment cell, including a donor compartment with the drug solution, which simulates the environment where the drug is applied, and a receptor compartment with a buffer solution, which simulates the environment...
The diffusion cell method uses a two-compartment cell, including a donor compartment with the drug solution, which simulates the environment where the drug is applied, and a receptor compartment with a buffer solution, which simulates the environment...
01:22Inorganic Nitrogen Assimilation
Nitrogen is an essential element in biological systems, forming a crucial component of proteins, nucleic acids, and other cellular constituents. Many bacteria and archaea acquire nitrogen in the form of nitrate (NO₃⁻) or ammonia (NH₃), which are then assimilated into biomolecules through specific enzymatic pathways.Assimilatory Nitrate ReductionWhen nitrate enters the cell, it undergoes a two-step reduction process known as assimilatory nitrate reduction. Initially, the enzyme nitrate reductase...
01:20Sulfur Assimilation
Sulfur is an essential element in biological systems, contributing to synthesizing key biomolecules, including amino acids such as cysteine and methionine, and cofactors such as coenzyme A and biotin. Microorganisms primarily assimilate sulfur as sulfate (SO₄²⁻) from the environment, which must undergo a series of biochemical transformations before it can be incorporated into cellular components. As sulfate is highly oxidized, it must undergo assimilatory sulfate reduction to become...
01:23Red Algae
Red algae, also known as rhodophytes, are primarily found in marine environments, though some species inhabit freshwater and terrestrial ecosystems. These organisms exist in both unicellular and multicellular forms, with some multicellular varieties reaching macroscopic sizes.As phototrophic organisms, red algae contain chlorophyll a; however, their chloroplasts lack chlorophyll b. Instead, they possess phycobiliproteins, which serve as major light-harvesting pigments, similar to those found in...