Efficient separation of nitrite from aqueous solutions by grafting metalloporphyrin on Fe3O4 nanoparticles

Recent nanoparticle engineering advances in microalgal cultivation and harvesting processes of biodiesel production: A review

“…Poursaberi et al (2013) demonstrated a decrease in the adsorption efficiency of nitrite from aqueous solutions due to the instability of APTEScoated Fe 3 O 4 nanoparticles. Culture media contamination by detached organic coating chemicals can cause problems with respect to its recycling for subsequent microalgal cultivation and post-treatments such as oil extraction and conversion for biofuel production.…”

“…To that end, powdered metal oxide waste sources from steel and related industries could be considered . The instability of coating materials such as APTES under aqueous conditions also needs to be addressed (Poursaberi et al, 2013). More specifically, material engineering technologies for strong coating of functional nanomaterial onto the surfaces of metal oxide, at minimum dosages while maintaining high reactivity, must be developed.…”

Extraction of ammonia and nitrite using modified magnetite iron oxide nanoparticles before spectrophotometric determination in different water samples

“…High levels of nitrite in surface or ground waters are produced as a result of application of chemical fertilisers *Corresponding author. Email: a.bavili@tbzmed.ac.ir or industries producing metals, dyes and celluloids [11]. Determination of nitrite is of general importance because of its harmful impact on human health.…”

“…Nitrite ions are precursors of the nitrosamines formation which are carcinogens. Moreover, high concentrations of nitrites in blood can cause methemoglobinemia or 'blue baby syndrome' [10][11][12]. The admissible concentration of nitrate and nitrite in drinking water in the majority of countries controlling these parameters is 50 and 0.5 mg L −1 , respectively.…”

“…The hydrophobic layers on the surface of MNPs provide suitable conditions for non-polar components to interact with MNPs [2]. This magnetic solid-phase extraction (MSPE) method based on mixed-hemimicelles assemblies (hemimicelles/admicelles) has been used for the extraction and preconcentration of a variety of inorganic [2,11,[23][24][25][26][27] and organic [22,[28][29][30][31][32][33][34][35][36][37] compounds from various matrices.…”