COMMENT ON: Olushola S, Olalekan S, Folahan A, Leslie F and Ximba BJ (2014) Application of nano zinc oxide (nZnO) for the removal of triphenyltin chloride (TPT) from dockyard wastewater

Abstract

This study would definitely be useful to develop a new type of competent adsorbent for water quality improvement. However, we would like to suggest further consideration (described below) for practical application, before concluding that nZnO, as used in this reported study, is an efficient adsorbent to remove TPT in dockyard wastewater systems. Natural organic matter (NOM) is a trace organic matter which is a ubiquitous component of natural waters and a degradation product from microorganisms, animals and plants in the environment, via physical, chemical or biological processes (Summers and Roberts, 1988). The size, shape and composition of a molecule of NOM varies greatly. Since NOM is easily bound to metal ions and minerals due to its high reactivity (Buffle, 1989; LeBoeuf and Weber, 2000; Zhou et al., 2005), NOM plays an important role in adsorbing and transporting heavy metals and organic pollutants in natural or engineered environments.

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