Experimental and computational modeling studies on silica-embedded NiO/MgO nanoparticles for adsorptive removal of organic pollutants from wastewater

Abstract

This study presents newly-prepared silica-embedded NiO/MgO nanoparticles with a new experimental and computational adsorption approach for wastewater treatment.

Surface modification of carbon nanotubes with copper oxide nanoparticles for heat transfer enhancement of nanofluids

“…[7][8][9][10][11][12] The nanotechnology, in terms of nanoparticles, has the potential in manufacturing metals and metals oxide with remarkable effects on the thermophysical and transport properties when added to the base uids. [13][14][15][16] Additionally, the nanoparticles in the uids showed less clogging abrasion, better dispersion behaviour and the higher surface area which contemplate improving the efficiency of heat-transfer uids compared with the behaviour of the conventional uids. [17][18][19] The "nanouid" term for heat exchangers applications has been rstly introduced and described by Choi in 1995 (ref.…”

Sustainable competitive adsorption of methylene blue and acid red 88 from synthetic wastewater using NiO and/or MgO silicate based nanosorbcats: experimental and computational modeling studies

“…The preparation of the SBNs was according to previous works. 40,42 The source of the silica was from Ludox AS-40 colloidal silica for all types of SBNs. These in-house prepared SBNs were employed for the removal of organic model molecules from wastewater in single and bi-solution systems.…”

“…Further and comprehensive characterizations of our prepared SBNs and their compositions can be found in our earlier work. 40 2.4 Adsorption experiments 2.4.1 pH effect. The pH of the aqueous solution plays an important role in many adsorption processes, especially on the saturation adsorption capacity of the adsorbent.…”

“…The IR spectrum of the virgin SBNs before adsorption of any substance was previously reported and discussed elaborately in previous work. 40 Fig. 6 shows the signals of the framework region for the MgO-SBNs, NiO-SBNs, and NiO-MgO-SBNs aer the adsorption of the organics.…”

“…Silica-embedded NiO and/or MgO nanoparticles are proven to be efficient nanoadsorbents and nanocatalysts (nanosorbcats) 37,38 for some organics removal exemplied by methylene blue MB, neutral red (NR), and acid red 27 (AR27). 39,40 Also, they showed high stability and regeneration processes. 41 This study aims at investigating the competitive adsorption of binary aqueous mixtures of MB and AR88 using in-house prepared silicate-based NiO and/or MgO nanosorbcats (herein aer named as SBNs); experimentally and computationally.…”