一种以三酸酸盐为基础的化剂,用于稳定城市固体废物焚烧中的
Xue Huang1, Xiaoyu Shen1, Pan Luo1
1College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, People's Republic of China.
Environmental technology
|February 9, 2026
概括
一种新的有机化剂,TA,有效地稳定了城市固体废物焚烧飞灰 (MSWI-FA) 中的危险 (Pb). 这种环保处理可以减少的漏,低于法规限制,减轻飞处置造成的污染风险.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 废物管理 废物管理
背景情况:
- 城市固体废物焚烧 (MSWI) 产生含有危险重金属的飞灰 (FA),特别是 (Pb).
- 在FA中污染对环境构成重大风险,需要在填埋前进行有效的稳定.
- 传统的处理方法往往涉及危险的原材料,可能不够有效.
研究的目的:
- 开发和评估一种新的有机合剂,TA (三酸功能化酸氨酸大分子),用于稳定MSWI-FA中的Pb.
- 为了比较TA的疗效和环境优势与传统的化剂,如dithiocarbamates (DTC).
- 为了评估TA处理后的Pb浸出减少和Pb分化变化.
主要方法:
- 新型有机合剂TA的合成.
- 在4 wt%的剂量下,TA应用于MSWI-FA.
- 在处理前后对Pb漏度和酸可提取Pb分量的分析.
- 研究Pb特种变化的研究 (Pb(IV) 到Pb(II)).
主要成果:
- 添加4重%的TA显著降低了MSWI-FA中Pb的浸出度,低于中国监管限制.
- 在TA处理下,Pb的酸可提取分数从12.845%降至3.79%.
- 治疗有助于将Pb (IV) 减少到更稳定的Pb (II) 形式,从而提高了整体Pb稳定性.
结论:
- TA是一种新型,环保优质的有机合剂,用于稳定MSWI-FA中的Pb.
- 酸盐处理有效地固定了,降低了其对环境的风险,并符合填埋场处置法规.
- 这种方法提供了比传统方法更安全的替代方案,避免使用危险的原材料,如二硫化碳 (CS2).
相关概念视频
Metallic Solids
20.8K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
20.8K
Structures of Solids
18.0K
Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
18.0K
Complexation Equilibria: The Chelate Effect
1.3K
In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
1.3K
Network Covalent Solids
16.2K
Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
16.2K
Molecular and Ionic Solids
20.2K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
20.2K
Phase-lead and Phase-lag Controllers
577
Understanding the working function of different types of controllers can be illustrated with practical analogies, such as adjusting a stereo's volume equalizer. Cranking up the bass involves a phase-lead controller, which functions as a high-pass filter, while increasing the treble uses a phase-lag controller, which acts as a low-pass filter. PD controllers, similar to high-pass filters, enhance the system's response to high-frequency components. PI controllers, akin to low-pass...
577


