1、Potential Contamination of Groundwater by Modified Urea Formaldehyde

Chemical grouting materials, especially urea–formaldehyde (UF) resin slurry, are commonly used to control the flow of groundwater in mining-affected strata and reinforce roadways. We investigated whether the UF slurry and its reaction products might be adversely affecting groundwater quality.

2、A comprehensive review of the use of urea

UF resins show great promise in removing organic and inorganic pollutants such as dyes, phenolic compounds, and heavy metals due to their high adsorption capacity, stability, and cost-effectiveness.

3、Journal of Applied Polymer Science

Neat UF resins with three different formaldehyde/urea (F/U) mole ratios (1.4, 1.2, and 1.0) were modified, after resin synthesis, by adding four additives such as sodium hydrosulfite, sodium bisulfite, acrylamide, and polymeric 4,4′-diphenylmethane diisocyanate (pMDI).

4、Study of pollution effects on groundwater caused by modified urea

With this as the background, this paper investigates the pollution effects on the groundwater environment caused by the injection of modified urea-formaldehyde resin slurry into a sand layer under weaker hydrodynamic conditions.

5、Biodegradable Films Prepared from Pulp Lignocellulose Adhesives of Urea

In this study, urea-formaldehyde resin (UF) was modified with polyvinyl alcohol (PVA) and 1–2.5% bio-based sulfonate (BBS).

Degradation of urea

Urea -formaldehyde (UF) resin residues and the related product wastes as organic hazardous wastes are difficult to be biodegraded or recycled. In this research, a hydrothermal oxidation method using hydrogen peroxide (H2 O 2) solution has been developed for the degradation and recycling of UF resin residues.

Potential Contamination of Groundwater by Modified Urea–Formaldehyde

Chemical grouting materials, especially urea–formaldehyde (UF) resin slurry, are commonly used to control the flow of groundwater in mining-affected strata and reinforce roadways. We investigated whether the UF slurry and its reaction products might be adversely affecting groundwater quality.

Recent developments in the performance of micro/nanoparticle

Formaldehyde emission (FE) in UF resins-bonded wood panel products is one of the main drawbacks of UFs resins. The increasing demand for eco-friendly products requires a compelling drive towards the promotion of nano-particles science.

Environmental performance assessment of the melamine

We analyzed an LCA case study of melamine-urea-formaldehyde (MUF) resin manufacture. Most non-toxicological impacts occur during raw material supply stage. Most toxicological impacts occur during MUF manufacturing stage. Improvement suggestions were performed based on scenario analysis.

Effects of urea formaldehyde resin on the characteristics and microbial

In general, the results of this study provide new insights for the ecological risk assessment of urea formaldehyde resin in anaerobic wastewater treatment system, and provides very useful information for the design of anaerobic treatment process containing UF resin.

In modern society, with the acceleration of industrialization, the use of chemical products has become increasingly frequent. Among them, modified urea-formaldehyde resins, as a common type of adhesive and wood treatment agent, are widely used but also bring environmental problems that cannot be ignored. Soil, as an important component of the Earth's surface, directly affects the balance of the entire ecosystem. the improper use of modified urea-formaldehyde resins not only impacts the physical and chemical properties of soil but may also pose potential threats to human health through the food chain and other pathways.

The application of modified urea-formaldehyde resins in agriculture primarily involves their use as carriers for pesticides and fertilizers to improve the efficiency and stability of these chemicals. These resins contain formaldehyde and other harmful chemical substances. When decomposed in soil, they release formaldehyde and other volatile organic compounds (VOCs), which have strong irritating odors and pose threats to human health. Long-term exposure to low doses of formaldehyde can cause irritation to the eyes, nose, and throat, and in severe cases, may lead to chronic respiratory diseases. Exposure to high concentrations of formaldehyde can result in acute poisoning, manifesting as headaches, nausea, vomiting, and even life-threatening conditions.

In addition to the potential harm to individual health, the impact of modified urea-formaldehyde resins on soil ecology cannot be overlooked. Due to their complex composition, including various chemical substances such as formaldehyde, these resins may destroy the living environment of soil microorganisms, inhibit their biological activity, and thus affect the self-purification capacity of the soil. Furthermore, certain additives in some modified urea-formaldehyde resins, such as heavy metal salts, may accumulate in the soil, leading to heavy metal pollution, which in turn affects plant growth and the safety of agricultural products.

Soil is the foundation for the growth of many crops, and the decline in soil quality directly affects the health and yield of crops. Harmful substances in modified urea-formaldehyde resins, such as formaldehyde and heavy metals, can enter crops through the soil and ultimately reach humans. This not only lowers the safety standards of agricultural products, increasing food safety risks, but may also add to the economic burden of farmers, as additional resources are needed to handle contaminated produce.

Faced with the threats posed by modified urea-formaldehyde resins to soil and human health, a series of measures need to be taken to reduce their negative impacts. First, strengthen the regulation of modified urea-formaldehyde resin products to ensure they do not harm the environment or human health during use. Second, promote the use of environmentally friendly adhesives and wood treatment agents to reduce environmental pressure. Additionally, raising public environmental awareness and encouraging people to reduce the demand for and use of chemical products containing harmful substances like formaldehyde is crucial. Finally, enhancing research on soil pollution and exploring more effective soil remediation technologies are necessary to restore soil health.

while modified urea-formaldehyde resins play an irreplaceable role in certain fields, their harm to soil and human health cannot be ignored. By strengthening regulations, promoting eco-friendly products, raising public awareness, and advancing scientific research and technological improvements, we can effectively reduce the impact of these harmful substances on the environment and human health, achieving sustainable development goals.