1.6 Scope of the research
The research was aimed to investigate on the mechanisms
involved in Cr (VI) and Zn (II) removal by water hyacinth plants in a closed
system. That's why this research was limited at a laboratory pilot scale by
using an industrial synthetic wastewater prepared in the lab by adding
different concentrations of Cr (VI) and Zn (II), water hyacinth plants were
used as adsorbent to assess the mechanisms of removal.
1.7 Report outline
This study has been delimited in six chapters according to the
general introduction (background, problem description, objectives, research
questions, hypotheses and the limitation of the research), literature review
(general in formations on heavy metals, water hyacinth, wastewater treatment),
materials and methods used, results found, discussions on results found,
conclusions and recommendations followed by references and some appendices.
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