Adsorption of p-nitrophenol from aqueous solutions using nanographite oxide

Adsorption characteristics and mechanism of p-nitrophenol by pine sawdust biochar samples produced at different pyrolysis temperatures

“…The peaks appearing between 1,090 and 1,250 cm −1 are assigned to C-O and C-O-C stretching vibrations 40 of alcohols, phenols, and ether or ester groups. Based on the decrease in intensity of the C-O-C stretching vibrations observed in the case of biochar loaded with p-nitrophenol (with respect to "pure" biochar), and the shift of the position of the peak due to -OH from 3,400 cm −1 , in the case of biochar, to 3,464 cm −1 , in the case of biochar loaded with p-nitrophenol, the obvious conclusion can be drawn that hydrogen bonding interactions exist between p-nitrophenol and biochar 41 Table 4. Thermodynamic parameters for the adsorption of p-nitrophenol onto biochar samples obtained at different pyrolysis temperatures.…”

Catalytic Reduction of p-Nitrophenol Using Chitosan Stabilized Copper Nanoparticles

“…Exposure to p-NP brought about risks to the environment that can eventually harm human life [1]. As such, several water treatment techniques have been employed to address the p-NP in polluted water including membrane filtration [2], photodegradation [3], adsorption [4] and chemical reduction [5][6][7][8][9][10][11][12]. Among these techniques, chemical reduction of p-NP to 4-aminophenol is favorable due to its great commercial benefits.…”

Reusable bentonite clay: modelling and optimization of hazardous lead andp-nitrophenol adsorption using a response surface methodology approach

“…The presence of p-nitrophenol and its analogues in the environment has become a great concern in recent years because of their increased discharge, toxic nature and adverse effects on the receiving water bodies. 5 Moreover, p-nitrophenol is responsible to cause degeneration in human proteins, tissue erosion, paralysis of the central nervous system, and damage to the liver, kidney and pancreas. 6 As a priority toxin (US Environmental Protection Agency) because of its potential harm on aquatic life, plants and human beings even at low concentrations.…”