What is it about?

Using plant for energy production and analysis of the chemical and physical composition of the plant. A new application was proposed to use the plant as an adsorbent and removal of the heavy metals.

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Why is it important?

Biomass is the second main source of energy in the UK. Water treatment is crucial for the near future where different countries will face the water crisis.

Perspectives

Using dry plant as an energy crop for production of electricity and heat as well as heavy metal removal to treat wastewater. Miscanthus species originated in Asia and were imported into Europe and North America as ornamental plants. They are perennial rhizomatous grasses with lignified stems and present very high growth rates, even in more temperate maritime climates. This potentially abundant biomass offers benefits to many sectors and is used to an extent in energy generation applications, however, issues with regards to its physicochemical combustion characteristics currently hinder this uptake. In this work, a novel alternative application, namely its direct use of dry miscanthus (DM) plant as an adsorbent for heavy metals removal (HMR) from wastewaters, was investigated. The physical, chemical, and leaching properties of DM were analyzed using XRD, SBET, TGA, DSC, SEM-EDX, elemental analysis, halogen, and ICP techniques. Subsequently, the HMR capacity of miscanthus was studied for lead, copper, and zinc from aqueous solutions. Results showed a high percentage removal of 66%, 83%, and 88%, respectively, with the majority being removed during the first hour of the test. Overall the results show that DM plant can be effectively utilized in wastewater treatment.

Ahmed Ibrahim Ahmed
Queen's University Belfast

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This page is a summary of: Physicochemical characterization of miscanthus and its application in heavy metals removal from wastewaters, Environmental Progress & Sustainable Energy, October 2017, Wiley,
DOI: 10.1002/ep.12783.
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