在动态条件下使用复合吸附剂从水性介质中去除二甲和重金属离子
Daniela Fighir1, Carmen Paduraru1, Ramona Ciobanu1
1Department of Environmental Engineering and Management, "Gheorghe Asachi" Technical University of Iasi, 73 D. Mangeron Street, 700050 Iasi, Romania.
新型复合吸附剂有效地从水中去除重金属和药品. 这些材料具有很高的吸附能力和对,和的亲和力,有可能用于废水处理应用.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 水处理技术水处理技术
背景情况:
- 药品和重金属是水的重要污染物.
- 在复合吸附剂上吸附是一种有前途的去除方法.
- 层次沉积 (LbL) 和协物直接沉积是关键的制备技术.
研究的目的:
- 通过使用新型的芯/多电解质外复合 Sorbents,研究重金属和二甲盐 (DCF-Na) 的动态吸附.
- 评估聚离子类型 (PAA与PMAA) 和交联度对污染物固定化的影响.
- 评估这些吸附剂在与废水处理相关的动态柱状条件下的性能.
主要方法:
- 制备四种新型复合吸附剂,其中包括芯和多电解质外.
- 在连续流柱中使用单元和多元组分溶液进行动态吸附实验.
- 使用非线性Thomas和Yoon-Nelson模型进行动力分析.
- 调查重金属 (Pb2+,Cd2+,Ni2+) 和二甲盐 (DCF-Na) 的吸附.
主要成果:
- 复合吸附剂对重金属具有良好的吸附能力,亲和度顺序为:Pb2+ > Cd2+ > Ni2+.
- 增加的初始DCF-Na度增强了IS/(PEI-PAA) c-r1吸收剂上的吸附.
- 吸附动力学由托马斯和尤恩-尼尔森模型描述得很好.
- 在DCF-Na和重金属和吸附剂柱之间观察到显著的亲和力.
结论:
- 新型复合微粒对于从水中动态去除重金属和药品是有效的.
- 聚离子的性质和交叉链接程度影响吸附性能.
- 这些吸附剂显示出在废水处理中实际应用的潜力.
更多相关视频
05:52Resource Recycling of Red Soil to Synthesize Fe2O3/FAU-type Zeolite Composite Material for Heavy Metal Removal
Published on: June 2, 2022
11:14Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent
Published on: February 21, 2017
相关概念视频
Extraction: Advanced Methods
Enhanced Elimination of Poison
Antidotes serve a crucial role in counteracting the effects of poison by inhibiting enzymes responsible for producing harmful drug metabolites. In some cases, these toxic metabolites can be neutralized by endogenous cosubstrates, which are maintained at specific concentrations to prevent interaction with cellular macromolecules and subsequent cell death.
Renal excretion is the...
Masking and Demasking Agents
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...
Precipitation and Co-precipitation
Voltammetry: Stripping Methods
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
Ion-Exchange Chromatography
