The antioxidant activity of the leaves and flowers Moringa oleifera plant were investigated results compared to those selected vegetables (cabbage, spinach, broccoli, cauliflower peas). Antioxidant was determined by analysing total phenolics content, flavonoids reducing power radical scavenging using 2,2-diphenyl-1-picrylhydrazyl free method. content moringa almost twice that three times vegetables. higher than percentage radicals remaining lower with These combined show is a good source...

Contamination of water by hexavalent chromium generated from man–made activities remains one the challenges for environmental pollution. Activated carbon impregnated with diluted polyethyleneimine (PEI) solutions was investigated as a possible adsorbent remediation contaminated toxic Cr(VI). The activated adsorbents were characterized using Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). Parameters that influence adsorptive removal Cr(VI) evaluated, it...

The disinfection of wastewater using nanoparticles (NPs) has become a focal area research in water treatment. In this study, zinc oxide (ZnO) NPs were synthesized the microwave heating crystallization technique and characterized transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy X-ray diffraction (XRD). Qualitative well diffusion quantitative minimum inhibitory concentration (MIC) tests conducted to determine antimicrobial activity ZnO against selected...

Macadamia nutshell biosorbents treated in three different activating agents [raw powder (RMN), acid-treated (ATMN) and base-treated (BTMN)] were investigated for the adsorption of hexavalent chromium [Cr(VI)] from aqueous solutions. Fourier transform infrared spectroscopy spectra free Cr(VI)-loaded sorbents as well thermogravimetric analysis revealed that acid base treatments modified surface properties sorbent. Surface characteristics also evaluated by scanning electron microscopy area...

Macadamia activated carbon (MAC) was impregnated with different concentrations of sulphuric or phosphoric nitric acid ranging from 20 to 60% v/v and heated in a muffle furnace improve the structural characteristics adsorbents for enhanced Cr(VI) removal. The %S content between 2.27 3.23% H2SO4 treated MAC corroborated incorporation sulphonate groups during modification. Fourier transform infrared spectroscopy displayed presence CN, NO, sulphur phosphorus peaks at 1213, 1531, 1204, 1214 cm−1,...

Moringa (Moringa oleifera) is a plant that commonly consumed as nutritional supplement by some communities in South Africa. Contamination of moringa with toxic heavy metals could be deadly for consumers. However, metal elements are essential consumers trace amounts. We therefore investigated the concentrations metals, including major and nutrient elements, soil leaves flowers grown on two farms After total digestion microwave, were determined using inductively coupled plasma optical emission...

Abstract An ultrasound-assisted magnetic solid-phase extraction method was developed to pre-concentrate tetracyclines (TCs) in wastewater and river water. The chitosan-zeolite composite used as an adsorbent. morphological structural properties of the adsorbent were characterised by various analytical techniques. factors affecting optimised using a central design. A high performance liquid chromatography equipped with photodiode array detector quantify TCs water samples. Under parameters,...

This research focus endeavour to compare the remediation of tetracycline (TC) through activated carbon (AC), crafted utilizing two distinct chemical activators: zinc chloride (ACZ), and potassium hydroxide (ACK), using pine cone biowaste as an effective precursor, followed by microwave-assisted activation. The impact TC removal ACZ ACK adsorbents was thoroughly examined. influence pH, adsorbent mass, adsorption isotherms, kinetics, inclusive thermodynamics were studied. Our results revealed...

A linear copolymer was prepared from 4-vinylpyridine and styrene. An ion-imprinted polymer (IIP) specific for Cr (VI) adsorption by copolymerisation of the quaternised (quaternised with 1,4-chlorobutane), 2-vinylpyridine functional monomer ethylene glycol dimethacrylate (EGDMA), as cross-linking monomer, in presence 1,1'-azobis(cyclohexanecarbonitrile) initiator. Ammonium dichromate aqueous methanol were used a template porogenic solvent, respectively. Leaching chromate particles achieved...

Macadamia nutshell powder oxidized by hydrogen peroxide solutions (MHP) was functionalized immobilizing 1,5'-diphenylcarbazide (DPC) on its surface. The effectiveness of grafting confirmed the Fourier transform infrared spectrum due to presence NH and C=C stretches at 3361, 1591, 1486 cm-1, respectively, grafted material which were absent in nongrafted material. Thermogravimetric analysis revealed that DPC surface shells lowered thermal stability from 300°C about 180°C owing volatile nature...