Enhanced biochar stabilities and adsorption properties for tetracycline by synthesizing silica-composited biochar

Investigating the Aging Effects of Biochar on Soil C and Si Dissolution and the Interactive Impact on Copper Immobilization

“…Interestingly, following BC treatment with sodium silicate, the Cu sorption capacities in BC300 + Si and BC600 + Si increased by 24% and 9%, respectively, compared to BC300 and BC600. Zhao et al [ 46 ] from an adsorption study suggested that the addition of silicon not only enhanced the adsorption capacity of biochar, but also effectively resisted the decrease in the adsorption capacities on BCs after aging (H 2 O 2 and H 2 SO 4 oxidation). Previous studies have also shown that silica particles might affect C arrangement and structural composition by producing a Si-C coupling system in the biochar matrix [ 47 ].…”

Removal of methylene blue from aqueous solutions by biochar prepared from the pyrolysis of mixed municipal discarded material

“… electron donor-acceptor (EDA) interaction is an adsorption mechanism that involves  electrons in either the adsorbent and adsorbate, where functional groups such as amines Journal Pre-proof J o u r n a l P r e -p r o o f and methyl in either the biochar or adsorbate act as π electron acceptors (Zhao et al, 2019).…”

Removal of Drugs in Polluted Waters with Char Obtained by Pyrolysis of Hair Waste from the Tannery Process

“… 34 , 35 Among the reported adsorbents are chitosan balls, 35 activated carbon and bentonite, 11 magnetite nanoparticles, 36 , 37 and zero-valence iron nanoparticles. 34 , 38 According to the research performed by Zhao et al, 39 the adsorption of more than 30 types of antibiotics involves several adsorbents, including activated carbon, 40 bentonite, 41 nanoparticles of titanium dioxide; 42 steel shavings, 43 sawdust biochar, 44 wheat straw biochar, 45 and sludge biochar. 46 Not all adsorption techniques are effective, and their use depends on the properties of the sorbent, such as particle size, surface area, functional groups, and porosity, among others.…”

“…Thus, considering the origin of contamination by these types of compounds in the surface and groundwater discharges from the point and nonpoint sources of municipal and agricultural wastewater. , Today, many processes have been studied for the removal of these types of compounds, such as adsorption, advanced oxidation, electrochemical treatment, biological treatment, and photocatalysis. − In addition, new technologies have been used for the purpose of removing these compounds from wastewater, including adsorption and membrane filtration (RO-UF). , However, the membrane filtration methods must remove adsorbed contaminants, or they will be ineffective in wastewater treatment. Adsorption is considered the most effective method for removing pollutants found in wastewater, as it is simple and cost-effective. , Among the reported adsorbents are chitosan balls, activated carbon and bentonite, magnetite nanoparticles, , and zero-valence iron nanoparticles. , According to the research performed by Zhao et al, the adsorption of more than 30 types of antibiotics involves several adsorbents, including activated carbon, bentonite, nanoparticles of titanium dioxide; steel shavings, sawdust biochar, wheat straw biochar, and sludge biochar . Not all adsorption techniques are effective, and their use depends on the properties of the sorbent, such as particle size, surface area, functional groups, and porosity, among others .…”

“…), as well as by the aromatization structure, specific surface area, porosity, and degree of graphitization . The adsorption of pharmaceutical compounds has mainly focused on biochar obtained from lignocellulosic materials, , although some authors have tried biochar obtained from other types of waste such as bovine manure. , An example of this is cow hair, which has been used for the removal of short-chain carboxylic acids in wastewater …”