Anionic polyacrylamide (APAM) is a linear, high molecular weight, water-soluble polymer that is widely used as a composite material. Due to its anionic (negatively charged) nature, it is particularly effective in applications where negatively charged particles need to be removed or suspended solids need to be agglomerated.
Properties of anionic polyacrylamide
| Chemical Name | Anionic polyacrylamide (APAM) |
| Appearance | white particles |
| Solids content (solids)/% | ≥88 |
| Acrylamide monomer content (dry matter basis)/% | ≤0,05 |
| Melting time in minutes | ≤90 |
| Screen residue (1.00 mm mesh size)/% | ≤2 |
| Water insoluble substances/% | ≤1,0 |
| Chloride content/% | ≤0,5 |
| Sulphate content/% |
≤1,0 |
Introduction
Anionic polyacrylamide, abbreviated APAM, is a water-soluble polymer used in various industries such as water treatment, mining, oil and gas, and paper manufacturing. Due to its unique properties, this polymer has found its niche in industrial processes. In this article, we discuss the properties, applications, and importance of anionic polyacrylamide.
Properties of Anionic Polyacrylamide (APAM)
1. High solubility in water.
One of the most notable properties of anionic polyacrylamide is its high solubility in water. This polymer dissolves quickly in water and acts as a transparent solution.
2. Negative electric charge
Anionic polyacrylamide possesses a negative electrical charge that allows it to interact with positively charged particles and form new chemical compounds. This property enables the use of APAM in coagulation and flocculation processes.
3. Coagulation and clumping ability.
Due to its negative electric charge, anionic polyacrylamide can be used as a coagulant and dispersant in water and wastewater treatment. This polymer can bind suspended particles and organic matter and separate them from the water into larger flakes.
4. High resistance to chemicals.
Anionic polyacrylamide has high chemical resistance and is resistant to various chemicals such as acids, bases, and solvents. Thanks to this property, APAM is also suitable for harsh chemical conditions.
5. Biodegradability
Anionic polyacrylamide is biodegradable, so it decomposes under natural conditions and causes less pollution.
Application of Anionic Polyacrylamide (APAM)
1. Water treatment and wastewater treatment
Water and wastewater treatment is one of the most important applications of anionic polyacrylamide. This polymer is used as a coagulant and flocculant to remove suspended particles and organic matter from water and wastewater. APAM can help improve water quality and reduce pollution.
2. Mining industry
In mining, anionic polyacrylamide is used to separate minerals from mining waste and to purify water. This polymer helps to improve the efficiency of mining processes and reduce operating costs.
3. Oil & Gas Industry
In the oil and gas industry, anionic polyacrylamide is used as a viscosity reducer and thickener in oil and gas production. APAM can help increase efficiency and increase oil and gas production.
4. Paper production
In the paper industry, anionic polyacrylamide is used to improve paper properties such as strength, moisture resistance and surface quality. This polymer helps to increase the efficiency of paper production.
5. Agriculture
In agriculture, anionic polyacrylamide is used as a soil and water conditioner . This polymer helps to improve soil structure, increase water retention and reduce the need for irrigation.
Benefits of Using Anionic Polyacrylamide (APAM)
1. Improve process efficiency
The use of anionic polyacrylamide helps to improve the efficiency of industrial processes, as it helps reduce operating costs, increase production volume, and improve product quality .
2. Pollution reduction
Anionic polyacrylamide can help reduce pollution due to its biodegradable properties and ability to remove pollutants. This polymer also helps improve water quality and reduce industrial pollution.
3. Increase economic productivity
The use of anionic polyacrylamide can help increase economic productivity in industry. This polymer helps reduce production costs, improve efficiency, and increase economic productivity.
4. Improve product quality
Anionic polyacrylamide improves the quality of industrial products , by improving their physical and chemical properties and increasing strength and durability.
Problems and limitations of using anionic polyacrylamide (APAM)
1. Production Cost
One problem with using anionic polyacrylamide is its high cost. The production of this polymer requires complex raw materials and processes, which can increase production costs.
2. Environmental impact
Although anionic polyacrylamide is biodegradable, in some cases it can have a negative impact on the environment. Improper use of this polymer can lead to water and soil pollution.
3. Restrictions on Use
The use of anionic polyacrylamide may be limited in some applications. This polymer may not work optimally under certain conditions and may require the use of additional chemicals.
Graduation
Anionic polyacrylamide (APAM) is one of the most important and widely used polymers in various industries. Thanks to its unique properties, it can improve process efficiency, reduce pollution, and increase economic productivity. This polymer is used in water and wastewater treatment, mining, oil and gas, papermaking, and agriculture, helping to improve product quality and increase production. However, deploying APAM requires careful handling and a deep understanding of its problems and limitations to achieve optimal performance.
Filling and loading with anionic polyacrylamide
| Net weight 25 kg/paper bag with polyethylene inner sleeve. |
Application of Anionic Polyacrylamide
Anionic polyacrylamide (APAM) is used in various industries due to its unique properties, especially its negative charge. Key applications include:
- Water treatment:
APAM has purifying and clarifying properties, promotes sedimentation, aids filtration and increases water density. It is widely used to treat drinking water, industrial wastewater, mineral wastewater, and municipal wastewater. APAM is mainly used to treat wastewater from slightly acidic to alkaline state. APAM is also used in sludge drying to reduce sludge volume and facilitate its handling and disposal in the water treatment process.
- Mineral extraction and processing:
In mining, APAM is used in solid-liquid separation processes. This contributes to the settling and drying of mining residues and clay deposits, and contributes to the effective disposal of mining wastewater.
- Paper Making Accessory:
Anionic polyacrylamide is used in the paper industry to improve strength and drainage during the manufacturing process. It also helps in the production of paper sheets, thus improving their quality and durability.
- Enhanced Oil Recovery (EOR) in Tertiary Oil Production:
APAM is used in the oil and gas industry to improve oil production. By increasing the viscosity of the injected water, this process improves oil production from the reservoir and results in higher production rates.
- Conservation of water and soil resources in agriculture:
APAM is used in agriculture to control and stabilize soil erosion. By improving soil structure, it helps retain water and prevent runoff, thus promoting sustainable agricultural practices.
- Construction industry:
In the construction sector, APAM can be used for soil reinforcement and foundation drilling to improve soil stability.
Properties of anionic polyacrylamide
| Chemical Name | Anionic polyacrylamide (APAM) |
| Appearance | white particles |
| Solids content (solids)/% | ≥88 |
| Acrylamide monomer content (dry matter basis)/% | ≤0,05 |
| Melting time/min | ≤90 |
| Screen residue (1.00 mm mesh size)/% | ≤2 |
| Water insoluble substances/% | ≤1,0 |
| Chloride content/% | ≤0,5 |
| Sulphate content/% |
≤1,0 |
Wide application of anionic polyacrylamide.
Anionic polyacrylamide is mainly used as a flocculant for the treatment of large suspended solids as well as highly concentrated, positively charged wastewater with neutral or alkaline pH. The molecular chain of anionic polyacrylamide contains a certain amount of G-groups, which adsorb suspended solids in the water and bind the particles into large flakes, thus accelerating the sedimentation of the suspended solids. This has an obvious effect on improving solution clarification and filtration.Anionic polyacrylamide is widely used in wastewater and wastewater treatment in chemical industry, municipal wastewater treatment, tap water treatment , highly turbid water treatment, sedimentation, coal washing, mineral processing, metallurgy, iron and steel, zinc and aluminum processing, electronics and other industries.
3 Anionic polyacrylamide can also be widely used in petroleum industry, oil production, drilling mud and drilling mud waste purification, water channel blocking, friction reduction, as well as oil recovery and tertiary oil extraction improvement.
Anionic polyacrylamide can also be used in the paper industry. Firstly, it improves the durability of fillers and pigments, thus reducing raw material waste and pollution. Secondly, it improves the strength of the paper. In addition, anionic polyacrylamide improves the tear resistance and porosity of the paper, thus improving the optical and printing properties. It is also used in food and tea paper.
5. Anionic polyacrylamide is used in other industries such as food processing, sucrose and beet sugar production, sugarcane juice purification and phosphorus flotation syrup extraction. It is also used in fermentation liquid purification industry to extract food proteins with consistent quality and high yield. The extracted protein powder showed no negative effects on survival, weight gain, or egg production. It is also used in synthetic resin coatings, waterproof injection materials in the construction sector, building materials industry, cement finishing, construction adhesives, repair sealants, waterproof materials, soil improvers, electroplating, printing and dyeing industry, etc.
The selection of anionic polyacrylamides is of great importance, especially for the sand washing and mining industries.
When anionic polyacrylamide is added to the washing sand during the water drying process, individual particles in the suspension will easily aggregate, form heavy aggregates, and settle quickly.
It is a high-quality clarifier. In order to achieve a good coagulation effect, high-molecular weight anionic polyacrylamide should be added to the sand washing process to speed up the coagulation process. This technology is expected to have wide application in the modern sand washing and mineral processing industry.
The selection of anionic polyacrylamides is of great importance, especially for the sand washing and mining industries.
If the selection is incorrect or the dosage is too high, the concentration of the negative charge on the sand surface increases, the sedimentation rate decreases, the product does not achieve the desired effect, and the cost increases. Heavily sedimented wastewater is mainly wastewater from sand washing plants.
In addition, the Yangtze River and the Yellow River, which have a slightly higher sand content, are treated as formation water. Polyaluminium chloride is used for the treatment of highly concentrated wastewater by coagulation sedimentation. Polyaluminium chloride mainly causes suspended solids and sediment particles in the water to lose their stability and small pseudo-blooms to form that slowly settle.
Anionic polyacrylamide (PAM) is then added, which converts the alum formed in the water into larger flakes, accelerates the separation of solids from the liquid and allows for rapid sedimentation. High molecular weight anionic polyacrylamide generally has an ideal therapeutic effect. With a molecular weight of 16 million/18 million, it is not only low dose, but also has a good therapeutic effect.
Anionic polyacrylamide is widely used as a coagulant in sand washing.
The sand washer uses polyacrylamide, and the agglomerated sand washer material is generally anionic polyacrylamide.
Anionic polyacrylamide is a water-soluble polymer, and because its molecular chain contains a certain number of G-groups, it can bind particles and thus absorb solids suspended in water, or coagulate particles into large clumps, thus neutralizing the charge.
It is mainly used for sedimentation and purification of various industrial wastewaters, and can also be used for purification and treatment of drinking water. The simultaneous use of anionic polyacrylamide and inorganic polyaluminum chloride results in a better and more pronounced effect.
We are active in wastewater treatment and our experience in this field allows us to solve the problems of our customers. We have an excellent reputation in this field. The company mainly produces polyaluminum chloride, polyacrylamide, polyferrisulfate and ferrous sulfate, among others. Yuan Zi not only produces, but also sells at reasonable prices.
To meet the needs of our clients, you can seek advice from our professional advisors before making your decision. We will select the option that suits you and our technical experts will be on hand to provide you with technical support . We are looking forward to long-term cooperation with you to achieve added value. Our company has a comprehensive and scientifically sound quality management system, modern equipment and reliable quality.