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For the first time the present study investigated the production, characterization and application of engineered biochar derived from alfalfa hays for removal of tetracycline (TC) in water. The NaOH activation of alfalfa-derived raw biochar (BC) made significant increase in surface area (796.50 m/g) and pore volume (0.087 cm/g). The NaOH-activated BC (BC) showed much higher adsorption capacity for TC (Q = 302.37 mg/g) than BC, but comparable to the commercial activated carbon (Calgon F400). The detailed analyses of the kinetic and isotherm studies suggested the strong chemisorptive interactions between TC and BC via multiple mechanisms. In addition, intraparticle diffusion was considered as the major limitation for the adsorption of TC onto BC. Furthermore, the fixed bed experiments revealed that BC could be a promising adsorbent for treating large volume of TC-contaminated water in columns.
This article was published in the following journal.
Name: Bioresource technology
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Waste products which, upon release into the atmosphere, water or soil, cause health risks to humans or animals through skin contact, inhalation or ingestion. Hazardous waste sites which contain hazardous waste substances go here.
Contaminated water generated as a waste product of human activity.
The routing of water to open or closed areas where it is used for agricultural purposes.
Management, removal, and elimination of biologic, infectious, pathologic, and dental waste. The concept includes blood, mucus, tissue removed at surgery or autopsy, soiled surgical dressings, and other materials requiring special control and handling. Disposal may take place where the waste is generated or elsewhere.
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