High Purity White Crystal Suitable Sodium Acetate for Heavy Metal Removal

Sodium acetate properties

1. Chemical properties
Chemical formula: CH₃COONa

Molecular weight: 82.03 g/mol (anhydrous matter); 136.08 g/mol (trihydrate)

Structure: Composed of the radical acetate ion (CH₃COO⁻) and sodium ion (Na +).

pH value: The aqueous solution is weakly alkaline, pH is about 8-9.

2. Physical properties
Appearance:

Anhydrous sodium acetate: white crystalline powder.

Sodium acetate trihydrate (CH₃COONa·3H₂O) : colorless transparent crystal.

Solubility:

Soluble in water, solubility increases significantly with temperature (at 20°C, about 46.5 g per 100 mL of water).

Slightly soluble in ethanol, insoluble.

Melting point:

Anhydrous sodium acetate: 324°C.

Sodium acetate trihydrate: 58°C (dehydration decomposition).

Density:

Anhydrous sodium acetate: 1.528 g/cm³.

Sodium acetate trihydrate: 1.45g /cm³.

Hygroscopic: Sodium acetate trihydrate is easy to hygroscopic, and anhydrous sodium acetate hygroscopic is low.

3. Thermal stability
Heated decomposition. When heated to high temperatures, sodium acetate decomposes to

form sodium carbonate (Na₂CO₃) and methane (CH₄)

What role does sodium acetate play in industrial heavy metal removal

1. Precipitation of heavy metal ions
Principle of action:

Sodium acetate can react with some heavy metal ions (such as lead, chromium, copper, zinc, etc.)

to form insoluble precipitates.

For example, sodium acetate reacts with lead ions (Pb² +) to produce a lead acetate precipitate:

The resulting sediment can be separated by filtration or sedimentation tanks,

thereby removing heavy metals from the wastewater.

Application scenario:

Electroplating wastewater treatment: remove lead, chromium,

copper and other heavy metal ions in electroplating wastewater.

Metallurgical wastewater treatment: remove zinc, nickel and other heavy metal ions in metallurgical wastewater.

2. Adjust the pH value
Principle of action:

Sodium acetate aqueous solution is weakly alkaline and can be used to regulate the pH value of wastewater.

Proper pH value is conducive to the formation of hydroxide precipitation of heavy metal ions.

For example, under alkaline conditions lead ions (Pb² +) produce lead hydroxide (Pb(OH)₂) precipitates:

Application scenario:

Comprehensive wastewater treatment: Adjust the pH value of wastewater to promote the precipitation of heavy metal ions.

3. Complexation
Principle of action:

Sodium acetate can form soluble complexes with some heavy metal ions and change its chemical properties.

For example, sodium acetate forms a complex with copper ions (Cu² +) :

The complex can be further removed by subsequent treatment (e.g. adsorption, ion exchange).

Application scenario:

Complex wastewater treatment: Used to treat complex wastewater containing a variety of heavy metal ions.

4. Enhance flocculation effect
Principle of action:

Sodium acetate can be used as a flocculating agent to enhance the

effect of flocculants (such as polyaluminum chloride, polyacrylamide).

By improving the performance of flocculant, the removal efficiency of heavy metal ions was increased.

Application scenario:

Industrial wastewater treatment: used to improve the removal rate of heavy metals in flocculation precipitation process.

FAQ

1.What is your payment term?

We can accept T/T and L/C at sight as payment term.

2.Are you able to deliver on time?

Of course! we specialised in this line for many years,

many customer make a deal with me because we can deliver the goods on time and keep the goods top quality!

3.Do you provide free sample?

Yes, we can provide free sample . You only need to take the express fee.

4.How about the price?Can you make it cheaper?

We always take the customer’s benefit as the top priority.

Price is negotiable under different conditions, we are assuring you to get the most competitive price.

5.Can I visit your company and factory in China?

Sure. You are very welcomed to visit our company in Weifang, China.

(We will have someone responsible for picking up and dropping off at Weifang Airport)

6.What if there is a quality problem?

We have a professional and perfect after-sales service team, timely for you to deal with all problems.