Rapid remediation of pharmaceuticals from wastewater using magnetic FeO/Douglas fir biochar adsorbents.

Modification of commercially available Douglas fir biochar (BC) by iron oxide nanoparticle precipitation from aqueous Fe/Fe salt solutions upon NaOH treatment generated a hybrid adsorbent (MBC) that removed three common emerging aqueous contaminants, a stimulant (caffeine) and two anti-inflammatory drugs (ibuprofen and acetylsalicylic acid) through batch sorption. FeO particles (12.3 ± 7.

Extraction and Analysis of Xylitol in Sugar-Free Gum Samples by GC-MS with Direct Aqueous Injection.

Xylitol, a sugar substitute frequently used in sugar-free gum, is generally considered harmless to humans but it can be extremely toxic to dogs. Dog-owning customers are becoming increasingly aware of the risks associated with xylitol-containing chewing gums. However, there remains some uncertainty if these chewing gums are still dangerous to dogs after they have been partially consumed.

Fast nitrate and fluoride adsorption and magnetic separation from water on α-FeO and FeO dispersed on Douglas fir biochar.

α-FeO and FeO dispersed on high surface area (663 m/g) Douglas fir biochar (BC) was prepared for fast nitrate and fluoride ion removal from water using magnetic separations. This biochar, made originally at 900 °C, was impregnated with FeCl and converted by pyrolysis at 600 °C to magnetic (494 m/g) biochar (MBC). MBC and its precursor BC were characterized using SEM, SEM-EDX, STEM, S, PZC measurements, XRD analysis, and XPS.