通过膜电容脱离和电解来增强斯特鲁维特的产生:酸和的干扰
Aditya Kurnia Aji Pangestu1, Arseto Yekti Bagastyo1, Ervin Nurhayati1
1Department of Environmental Engineering, Faculty of Civil, Planning, and Geo-Engineering, Institut Teknologi Sepuluh Nopember, 60111, Surabaya, Indonesia.
Environmental technology
|August 28, 2025
概括
这项研究通过将膜电容脱离离 (MCDI) 和电解相结合来回收营养物质,以形成石晶体. 这种方法有效地从废水中回收和,即使有酸等干扰物质.
科学领域:
- 环境工程
- 水处理技术
- 营养物质的恢复
背景情况:
- 废水中含有宝贵的营养物质,如和酸盐,如果未经处理就会导致肥胖.
- 酸沉是一种可行的营养回收和资源利用方法.
- 同时存在的离子和有机物质可能会阻碍有效的 struvite 形成和恢复.
研究的目的:
- 调查膜电容脱离离 (MCDI) 和电解的联合使用,以形成 struvite 晶体.
- 评估在有竞争性离子 (Na+,Ca2+) 和有机物质 (湿酸) 的情况下的营养回收效率.
- 确定从合成废水中生产高纯度斯特鲁维特晶体的最佳条件.
主要方法:
- 使用MCDI与牺牲性阳极电解一起处理含有氨,,,和酸的合成废水.
- MCDI使用活性碳电极吸附离子并保留和离子.
- 将MCDI废水输入基于Mg的电解系统,使用AZ31BMg合金阳极释放Mg2+离子以进行 struvite沉.
主要成果:
- MCDI有效保留了约84.19%的氨和78.07%的,其离子电吸能力为NH4+的15.53 mg/g和PO43-的21.45 mg/g.
- 在电解后,合过程显著增加了废水中的和酸盐度,分别为87.32%和63.65%.
- 在Na+的存在下产生高纯度 struvite (高达0.6195g),而Ca2+和酸则降低了晶体纯度和改变了形态.
- 在最佳条件下,斯特鲁维特回收的能量消耗为15.88Wh/g (N/P比为10:1,没有离子或酸).
结论:
- 将MCDI与电解相结合是一种有效的策略,用于从废水中生产 struvite 和恢复营养.
- 的存在增强了斯特鲁维特的回收,而酸和酸则对晶体质量产生了负面影响.
- 这种综合方法为废水处理和资源回收提供了有前途的解决方案,能控制能源消耗.
更多相关视频
09:00Electrochemical Detection of Deuterium Kinetic Isotope Effect on Extracellular Electron Transport in Shewanella oneidensis MR-1
Published on: April 16, 2018
10.2K
11:14Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent
Published on: February 21, 2017
12.5K
相关概念视频
01:30Urinary Tract Calculi III: Medical Management
23
The diagnosis of renal calculi involves several imaging techniques, including non-contrast CT scans and ultrasound. These methods help visualize kidney stones, assess their size and location, and detect possible obstructions. Additionally, Measuring urine pH is useful for diagnosing specific stone types, such as struvite (alkaline pH) and uric acid stones (acidic pH). Cystine stones are primarily linked to cystinuria, a genetic condition. A urinalysis helps detect blood in the urine (hematuria)...
23
03:46Qualitative Analysis
22.6K
For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...
For instance, group IV...
22.6K
01:19Ionic Strength: Effects on Chemical Equilibria
1.6K
The addition of an inert ionic compound increases the solubility of a sparingly soluble salt. For example, adding potassium nitrate to a saturated solution of calcium sulfate significantly enhances the solubility of calcium sulfate. Le Châtelier's principle cannot predict this shift in the equilibrium. Instead, this could be explained in terms of changes in the effective concentration of the ions in solution in the presence of added inert salt.
In this solution, the primary...
In this solution, the primary...
1.6K
01:17Ion Exchange
657
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
657
01:15Dialysis
803
Dialysis is a diffusion-based purification process that separates analyte molecules from a complex matrix. This is accomplished by allowing molecules in the solution to pass through a semipermeable membrane into a liquid on the other side. The membrane is usually made of cellulose acetate or cellulose nitrate, and the second liquid must be miscible with the solution. Ions (e.g., chloride or sodium) or organic molecules (e.g., glucose) can pass through the membrane pores, which generally have...
803
04:01Factors Affecting Solubility
33.9K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
33.9K