1、Recycle of discarded masks in civil Engineering: Current status and

Recycling DM has become a prime focus of sustainable development research. This investigation introduces a review of the recycling of DM in civil engineering and presents a novel modification of discarded mask fibers (DMF) to enhance the mechanical property of cement paste.

2、Disposal of Silane Coupling Agent Waste Liquid

the treatment and disposal of silane coupling agent waste liquid is a systematic endeavor requiring consideration of efficiency, cost, and environmental standards.

3、How to recycle or dispose of used silane agent for steel safely?

Recycling and proper disposal of used silane agents are crucial for several reasons. Firstly, silane agents can contain harmful chemicals that may pose a risk to human health and the environment if not managed correctly.

How to Properly Dispose of Expired Silane Coupling Agents

Silane coupling agents, as an important type of organosilicon compound, are extensively applied in coatings, adhesives, sealing materials, and other fields. due to negligence during storage and transportation, these agents may expire.

Limitless silanes

Silane coupling agents have the unique chemical and physical properties to not only enhance bond strength, but also prevent de-bonding at the interface due to use and aging, especially in humid conditions. The coupling agent provides a stable bond between two otherwise poorly bonding surfaces.

Waste from Silane Coupling Agents

The disposal of silane coupling agents not only leads to resource wastage but also has negative environmental effects. First, the organic components in these compounds are resistant to degradation in the environment, potentially causing persistent pollution.

Effect of the Chemical Properties of Silane Coupling Agents on

Upcycling recycled carbon fibers recovered from waste carbon composites can reduce the price of carbon fibers while improving disposal-related environmental problems.

Silane Coupling Agents

Oxane bonds of silane coupling agents to metal oxides seem to follow the same mechanism of equilibrium hydrolysis and rebonding, although equilibrium constants have not been measured for individual metal-oxygen­ silicon bonds.

Effect of the Chemical Properties of Silane Coupling Agents

Upcycling recycled carbon fibers recovered from waste carbon composites can reduce the price of carbon fibers while improving disposal-related environmental problems.

Silane Coupling Agents

This unique property of silane coupling agents is utilized widely in the application of the silane coupling agents for the surface treatment of glass fiber products, performance improvement of fiber-reinforced plastics by the direct admixture to the synthetic resin, improvement of

In the rapid development of modern industry, chemical processes play a pivotal role. Among these, silane coupling agents, as crucial organic compounds, are widely utilized in fields such as coatings, adhesives, and electronic materials due to their excellent surface treatment properties. the massive usage of silane coupling agents in industrial production has led to excessive resource consumption and environmental pollution. the recycling of silane coupling agents is particularly important. It not only reduces resource waste but also minimizes environmental pollution, aligning with sustainable development goals. This paper aims to explore methods for recovering silane coupling agents and their application prospects.

1. The Importance of Recovering Silane Coupling Agents

Silane coupling agents are highly reactive chemicals with complex molecular structures, making them difficult to separate and recover using conventional methods. Traditional approaches, such as incineration or chemical precipitation, are energy-intensive, inefficient, and often cause secondary pollution. Thus, developing efficient and eco-friendly recovery technologies for silane coupling agents has become urgent.

2. Methods for Recovering Silane Coupling Agents

a. Physical Methods

Physical methods primarily include adsorption and centrifugation. Adsorption involves using materials like activated carbon to trap silane coupling agents in their pores, followed by thermal or chemical desorption. While simple to operate, this method’s effectiveness depends heavily on the adsorbent’s properties, and recovery rates tend to be low. Centrifugation leverages density differences between silane coupling agents and water to separate them via high-speed spinning. Suitable for small-scale recovery, this method has limited processing capacity.

b. Chemical Methods

Chemical methods encompass oxidation-reduction and acid-base neutralization. Oxidation-reduction uses oxidants to convert organic groups in silane coupling agents into inorganic substances, enabling recovery. Though effective, this approach may introduce new pollutants due to oxidant use. Acid-base neutralization adjusts solution pH to transform silane coupling agents into soluble salts, which are then recovered through filtration or crystallization. Despite its simplicity, this method may generate waste liquid, posing environmental risks.

c. Biological Methods

Biological methods employ microbial metabolism to degrade silane coupling agents into harmless substances. Environmentally friendly and energy-saving, these methods remain in experimental stages and have yet to achieve industrial application.

3. Application Prospectives for Silane Coupling Agent Recovery

Recycling silane coupling agents reduces resource waste and environmental pollution. With growing environmental awareness and technological advancements, recovery techniques are expected to improve further. In the future, silane coupling agent recovery is poised to become an indispensable part of industrial production.

The recovery of silane coupling agents is not merely a technical challenge but also an environmental imperative. Through scientific approaches and advanced technologies, we can achieve efficient recycling and circular utilization of these agents, contributing to environmental protection and resource conservation. Let us work together to build a sustainable future.