Biosorption is considered a promising technique for removing heavy metals from water. However, biosorbent usually prepared in the form of biomass powder that has drawbacks stability and uniformity. Herein, spherical lignocellulose-based anion exchanger (LCB-AE) was sugarcane bagasse through method dissolution-regeneration followed by quaternary ammonium modification. Dissolution-regeneration co...

In this study, the iron-based carbon composite (hereafter FCN-x, x = 0, 400, 500, and 600 calcination) was synthesized by a simple high-temperature pyrolysis method using iron-containing sludge coagulant generated from wastewater treatment settling ponds in chemical plants. The FCN-x used for adsorptive reduction of aqueous phase Cr(VI) effectively. characterized scanning electron microscopy (S...

Unmodified zeolites show little affinity for anions due to the fact that their surfaces are negatively charged. However modification of zeolites with amines turns their negative surface charge to positive and creating higher adsorption capacity for anions. In this study, polyaniline-clinoptilolite composite was prepared by polymerization of anilinium on the surface of zeolite. The composite...

First posted April 25, 2023 For additional information, contact: Director,California Water Science CenterU.S. Geological Survey6000 J Street, Placer HallSacramento, California 95819 samples collected by the U.S. Survey from more than 100 wells between March 2015 and November 2017 in Hinkley Valleys, Mojave Desert 80 miles northeast of Los Angeles, California, were analyzed for field parameters,...

Three aqueous oxidants, Hydrogen peroxide, Sodium Hypochlorite and Calcium Hypochlorite were employed independently in oxidizing Chromium (III) containing tannery wastewaters to soluble chromate (CrO42-) under alkaline conditions. The amount of chromate recovered was determined via spectrophotometry. Hydrogen peroxide was potentially a suitable oxidant as it could recover chromate (CrO42-) up t...