Research on adsorbent has been intensively studied to remove pollutants from wastewater, and layered double hydroxide (LDH) has shown remarkable performance. However, regeneration of exhausted LDH, being the most difficult part of adsorption technology, is often overlooked. This project developed an innovative method, electrochemical (EC) regeneration, to regenerate LDH and adsorbed products. It has very low energy expenditure and can be done on-site with simple setup. It was discovered that LDH activated through calcination has a remarkable adsorption capacity which is 60 times than that of activated carbon. Capacity of LDH can be fully recovered for 6 cycles consecutively. This project successfully developed effective regeneration methods, thus turning wastewater and adsorbed products into resources again.
This is how I came up with the idea for this project:Adsorbents can effectively remove soluble contaminants from wastewaters. However, it can create more waste as there is no effective way to clean and reuse adsorbed pollutants. Therefore, I aimed to develop ways to reuse the water, adsorbent and adsorbate thus making the adsorption technology more environmentally friendly and economically viable.
Programme manager ania.andersch@siwi.org +46 8 121 360 59