What is it about?
In this review attention is focused on the various traditional and ecofriendly adsorbents, including a few of the local repositories which have proven enhanced performance for environmental pollutants removal. Due to their low cost and local availability, natural materials such as zeolite, montmorillonite-rich bentonite, industrial waste product chezacarb, beringite, chitosan, low rank coal shungite, fossil alginite, slovakite, starch, peat, commercial-grade active coke and iron oxihydroxides GEH were chosen to evaluate their adsorption performance in selected pollutant removal.
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Why is it important?
The current rapid escalation of raw material prices and the world recession are supposed to place abundantly available natural materials into an improved price-performance position in comparison to those materials which are produced synthetically, i.e. materials based mostly on synthetic crystalline or amorphous hydrocarbon matrices. Also, research interests in the designing of alternative adsorbents to replace costly commercial grade active coke and synthetic ion exchange resins (which are derived from petroleumbased raw materials and use the non-environmentally friendly chemical processing) have intensified in recent years.
Perspectives
Nowadays, there is evergrowing need to develop clean, non toxic and environmentally friendly or “green chemistry” processes and products. “Green“ designates in a novel, advanced adsorbent fabrication to adopt from the Nature bioinspiring (predominantly polysaccharide) materials and by the synthesis to mimic the exceptional features of natural species with their impressive varieties.
Prof. M.Eng. PhD. Eva Chmielewská
Comenius University
Read the Original
This page is a summary of: Abundantly Available Natural or Bioinspired Materials for Aqueous Pollutants Removal, Current Green Chemistry, October 2015, Bentham Science Publishers,
DOI: 10.2174/2213346102666141219201118.
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