tailieunhanh - In-situ sampling of nitrophenols in industrial wastewaters using diffusive gradients in thin films based on lignocellulose-derived activated carbons

Nitrophenols (such as o-nitrophenol (ONP), p-nitrophenol (PNP), and 2,4-dinitrophenol (DNP)) are priority environmental pollutants. Their toxicity is pH dependent, and these molecular species of nitrophenols exhibit higher toxicity than their anionic counterparts. Herein, for the first time, a method for the in situ measurement of nitrophenols in acidic industrial wastewater was developed using diffusive gradients in thin films (DGT) with lignocellulose hazelnut shell-derived activated carbons (HSACs) as the binding agents. Nylon membranes ( lm rated) with diffusion coefficients of ( ± ) 10 6 cm2 s 1 for ONP, ( ± ) 10 6 cm2 s 1 for PNP and ( ± ) 10 6 cm2 s 1 for DNP at 25 C were used as the DGT diffusion layers. The accumulation of ONP, PNP, and DNP in DGT samplers based on the HSAC and nylon membranes (HSAC-DGT) agreed well with the theoretical curves predicted by the DGT equation in synthetic solutions with 200 lg L 1 nitrophenol. The uptake of the HSAC-DGT samplers for ONP, PNP, and DNP was found to be independent of the ionic strength of pNaNO3 ( log [NaNO3] (mol L 1 )) in the range of –3 and the pH range of 3–7 for ONP and PNP and 3–6 for DNP, which is beneficial for their accumulation. The matrices of the tested water samples exhibited no notable interference during nitrophenol analysis by the HSAC-DGT samplers. | In-situ sampling of nitrophenols in industrial wastewaters using diffusive gradients in thin films based on lignocellulose-derived activated carbons

• Môi trường
• Diffusive gradients in thin films
• Nitrophenols in industrial wastewaters
• Diffusive gradients
• Lignocellulose derived activated carbons
• Activated carbons
• Metal bioavailability
• Metal uptake
• Sorghum Sudan grass
• Soil systems
• Lignocellulosic Precursors
• Thermal Treatments
• Activation Procedures
• Techniques Employed
• Wastewater Treatment
• Journal of Chemistry
• Activated carbon
• Packaged supercapacitors
• Pt modified activated carbons
• Characteristics of metal activated carbon composites
• Activated carbon adsorbents
• Adsorption kinetics
• Activated carbon modification
• CO2 adsorption isotherms
• Durian peel based activated carbon preparation conditions for dye removal
• Activated carbon preparation conditions
• Durian peel activated carbon
• Methylene blue from synthetic effluents
• The activated carbons
• tài liệu báo cáo nghiên cứu khoa học
• cách trình bày báo cáo
• kiến thức vật lý
• báo cáo vật lý
• các nghiên cứu vật lý
• Bio based activated carbon
• CO2 adsorption
• CH4 adsorption
• Isosteric heat
• Greenhouse gases
• Development of novel biosorbents
• Environmentally friendly processes
• Eco friendly activated carbons
• The recovery of gold
• Secondary sources
• Applied chemistry
• Chemical technology
• Atmospheric corrosion
• Polyvinylidene chloride
• Carbon based polymers
• Cement nomenclature
• Electroless displacement deposition of gold