Microwave assisted green synthesis of Fe₂O₃/biochar for ultrasonic removal of nonsteroidal anti-inflammatory pharmaceuticals

Abstract

Here, we have developed a simple and green microwave synthesis of iron oxide/biochar for the removal of new emergent pharmaceutical pollutants.

Green synthesis of ZnO coated hybrid biochar for the synchronous removal of ciprofloxacin and tetracycline in wastewater

“…Of the various antibiotics currently in use, ciprooxacin, a member of the uoroquinoline family, and tetracycline, a broad spectrum antibiotic, are the most commonly used in the treatment of bacterial infections and as animal growth promoters 1,2 and both have been classi-ed as high priority emerging organic pollutants by the World Health Organisation (WHO). 3,4 As a result of their widespread use, coupled with inadequate treatment of wastewater and their discharge into the environment, they have been detected in various systems such as soil, sediment, surface, ground and drinking waters including living tissues and this has raised concerns about their toxicity. 5,6 Even at low concentrations they have resulted in increase in antibacterial-resistant strains of organisms along with other adverse health effects such as stomatitis, leukopenia.…”

“…11 Biochar has attracted the attention of researchers as an adsorbent material due to its high porosity, surface area and adsorption capabilities, 12 the availability of diverse feedstock and ease of production, 13 low-cost and environmentally friendly nature. 4 Several materials have been utilized as starting precursors for biochar manufacture including mangosteen shells, 14 poplar wood, 15 sewage sludge, 16 corn straw 17 and sugarcane bagasse. 18 In this study, biochar material prepared from a hybrid of two low-cost precursors was functionalized in situ followed by further activation to improve the physicochemical properties of the adsorbents while their efficiency for the simultaneous removal of ciprooxacin and tetracycline under a range of experimental parameters was evaluated.…”

Magnetic Steel Slag Biochar for Ammonium Nitrogen Removal from Aqueous Solution

“…However, biochar in the form of fine powder is difficult to separate from aqueous solution after adsorbing pollutants [10,20]. Filtration and centrifugation steps are commonly used for this separation, but the pollutants on the biochars may desorb during the processes [21,22]. To overcome the problem of powdered biochar recovery, some studies have introduced Energies 2021, 14, 2682 2 of 12 magnetic properties into biochar by pure chemical (e.g., iron oxide, ferromanganese binary oxide, and iron oxy-hydroxides) immobilization [10,11,23].…”

New amino group functionalized porous carbon for strong chelation ability towards toxic heavy metals

“…The SIP can be measured using a potential measuring device (PCD, Müteck instrument) by monitoring the titration curve of adsorbateadsorbent, which allows the adsorbent surface potential measurements. 16,17 In addition, the adsorbent particle size in aqueous solution can be measured by Dynamic Light Scattering (DLS). According to this method, the average particle size is calculated from the measurement of the sample diffusion coefficient by photon correlation spectroscopy.…”