Activated multi-walled carbon nanotubes decorated with zero valent nickel nanoparticles for arsenic, cadmium and lead adsorption from wastewater in a batch and continuous flow modes

Metal nanoparticles/carbon nanosheets-derived from covalent organic frameworks for electrochemical sensing furazolidone, dopamine and uric acid

“…3E) [38]. XRD pattern of NiNPs/CN showed two peaks at 44.5° and 51.8°, which corresponded to the (111) and (200) crystal planes of NiNPs (PDF#04-0850) respectively, indicating the successful synthesis of NiNPs on CN [39].…”

Simultaneous removal of Pb2+ and direct red 31 dye from contaminated water using N-(2-hydroxyethyl)-2-oxo-2H-chromene-3-carboxamide loaded chitosan nanoparticles

“…1 Synthetic dyes and trace metals are two prominent groups of contaminants that co-occur in several industrial effluents [2][3][4] and pose momentous impacts to the human and living things. 1,2,5 Presence of synthetic dyes in the aquatic environment limits the light penetration, and increases the organic load and turbidity thus interrupt the photosynthesis process, reduces the dissolved oxygen and causes toxicity to aquatic ora and fauna. 1,2,6 Moreover, some synthetic dyes are hazardous because of their toxicity, carcinogenicity, mutagenicity, teratogenicity, and stability in the environment for long periods.…”

“…1,[6][7][8][9][10] On the other side, trace metals are one of the most hazardous contaminants due to their non-biodegradability, bioaccumulation, high mobility and toxicity. 3,5,11,12 Amongst trace metals, lead is widely used in several industries and consequently a common contaminant. 11 Exposure to lead have been linked to cancer, anorexia plumbism, anemia, damage of brain, liver, kidney, and memory and disorder of neuronal, nervous, and reproductive systems.…”

Equilibrium Isotherms and Kinetic Effects during the Adsorption of Pb(II) on Titanosilicates Compared with Natural Zeolite Clinoptilolite

“…; therefore, appropriate treatment of the wastewaters is crucial to prevent negative impacts on the environment. To the best of our knowledge, one of the most suitable techniques for the extraction of heavy metals from solutions is based on sorption/exchange processes with the use of porous materials such as natural and synthetic zeolites [1], mesoporous silica [2,3], clays [4][5][6][7][8], carbon nanotubes [9][10][11], activated carbon [12,13], biomass adsorbents [12][13][14][15], polymers [16], etc. The adsorption, separation, and ion-exchange properties of zeolites stem from their distinctive three-dimensional porous framework structure [17].…”