Removal of heavy metal ions from wastewater by chemically modified plant wastes as adsorbents: a review.

By W. Ngah, M. Hanafiah. Bioresource Technology, 2008

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Simultaneous adsorption of atrazine and Cu (II) from wastewater by magnetic multi-walled carbon nanotube (2012, background): “0 mg L , Cu (II) commonly exists far above the limit in wastewater of copper plating, pharmaceuticals, minings, paints and especially pesticides [27,28] which poses a great threat to the ecological environment and human health.”
Enhancing adsorption of heavy metal ions onto biobased nanofibers from waste pulp residues for application in wastewater treatment (2014, background): “Negatively charged entities (e.g., carboxylates) in biofiber’s surface are attractive in environmental remediation as they can interact with positively charged ions, polyelectrolytes and nanoparticles (O’Connell et al. 2008; Ngah and Hanafiah 2008; Liu et al. 2013).”
Biosorption: current perspectives on concept, definition and application. (2014, background): “Because the biosorption process primarily occurs on the surface of the biomass, surface modification can greatly alter biosorption efficiency (Vijayaraghavan and Yun, 2008; Wan Ngah and Hanafiah, 2008).”
The past, present, and future trends of biosorption (2010, background): “Biosorptive capacities of various biomass types have been quantitatively compared in many review papers [2,16,43-56].”