Vinasse-based biochar magnetic composites: adsorptive removal of tetracycline in aqueous solutions.
Yujia XiangYuzhou ZhouBin YaoYuqing SunEakalak KhanWei LiGuihua ZengJian YangYao-Yu ZhouPublished in: Environmental science and pollution research international (2022)
Highly efficient and cost-effective adsorbents for antibiotic removal are the key to mitigate pollution by industrial wastewaters. Pyrolyzing low-cost winemaking waste into biochar is a promising means for waste biomass utilization. This study assembled vinasse-derived biochar with manganese ferrite into vinasse-manganese ferrite biochar-magnetic composites (V-MFB-MCs) through simultaneous pyrolysis of waste biomass and metal (Mn and Fe) hydroxide precipitates. Batch experiments were conducted to evaluate the kinetics and isotherms of tetracycline (TC) adsorption as well as the influence of pH value, humic acid, and ionic strength. Morphological characterization showed that crystalline MnFe 2 O 4 nanoparticles were impregnated within the framework of fabricated V-MFB-MCs. Superior TC adsorption capacity and fast pseudo-second-order kinetics could be achieved by the V-MFB-MCs-800 at pH 3.0. The TC adsorption onto V-MFB-MCs-800 was highly pH-dependent and controlled by the positive influence of ionic strength and humic acid. V-MFB-MCs-800 showed excellent adsorption performance in different natural water. Multiple interaction mechanisms including pore filling effect, π-π stacking interaction, and hydrogen bonding contribute to TC removal by V-MFB-MCs-800, which can be an innovative biowaste-derived material for industrial wastewater treatment.
Keyphrases
- aqueous solution
- heavy metals
- wastewater treatment
- sewage sludge
- anaerobic digestion
- highly efficient
- risk assessment
- health risk assessment
- low cost
- antibiotic resistance genes
- municipal solid waste
- molecularly imprinted
- ionic liquid
- room temperature
- human health
- high resolution
- solid state
- reduced graphene oxide
- particulate matter
- metal organic framework