Acid and alkali recovery by the membrane is an advanced process that involves the use of specialized membrane chemistries to recover acids and alkalis from process streams. This procedure is particularly useful in industrial settings where acids and alkalis are commonly used in a variety of processes.

Advantages of using membranes

One of the key advantages of using membrane technology for acid and alkali recovery is that it allows for the recovery of these materials at extreme pH levels. This is possible because membrane chemistries are designed to be compatible with a wide range of pH levels, from 0 to 14. This means that these membranes can be used to recover both highly acidic and alkaline materials.

In addition to their compatibility with extreme pH levels, membrane chemistries used for acid and alkali recovery are also designed to be highly selective. This implies that they are able to effectively separate and recover specific acids and alkalis from complex process streams. For example, membranes can be used to recover hydrochloric acid from waste streams without allowing other contaminants to pass through the membrane. This allows the recovery of a pure form of acid or alkali which can be recycled back into the process.

The recovery of acids and alkalis with the help of membranes also offers a number of environmental benefits. Because membranes are able to separate and recover specific acids and alkalis effectively, they can help to reduce the amount of waste produced by industrial processes. This not only helps to protect the environment but also reduces the amount of waste that must be disposed of, which can help to reduce costs.

Permionics uses Alkali Stable Nanofiltration Membranes, which are non-polyamide, cross-linked PES membranes. They are stable from 0 to 14 pH up to 10 % NaOH concentration and are among the best in the industry for separating divalent ions, color & larger organic impurities.

Conclusion

Overall, acid and alkali recovery by the membrane is a valuable process that allows for the recovery of these materials at extreme pH levels. By using specialized membrane chemistries, industrial facilities are able to effectively and efficiently recover acids and alkalis from process streams, which can help to reduce waste and protect the environment.