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- Activated Carbon Produced from Tanning Industry Residues Used to Remove Carbamazepine from WastewaterPublication . Marques, David; Freitas, Maria Madalena; Silva, P. C.According to UNESCO, emerging pollutants are posing a threat to ecosystems and human health. These compounds can be either synthetic or natural chemicals or microorganisms, that are not usually regulated, and can be found in hospital wastewater, even after conventional treatment processes. Carbamazepine is a mood stabilizing drug and an anticonvulsant. Due to its persistence, carbamazepine is one of the most frequently detected pharmaceuticals in wastewater. Though there are many methods to remove such pollutants, adsorption is one of the most effective treatments. To remove carbamazepine from solution, an activated carbon prepared from leather residues and a commercial activated carbon were used as adsorbents. The adsorption tests show that the leather residue derived activated carbons have higher specific surface area (>1500 m’/g) and higher adsorption capacity (q > 300 mgcnz/g) for carbamazepine when compared to commercial activated carbon (992 m’/g and q < 180 mgcaz/g, respectively).
- Footwear leather waste treatment: Energetic alternative ways against landfill disposalPublication . Alves, C.; Marques, D.; Crispim, A.(Introduction) Leather finished wastes resulting from the footwear manufacturing process are generated. Most of this waste is contaminated with chromium. Energetic valorization is one alternative to landfilling that must be evaluated, taking into account the current importance of energy. In this way, three technologies can be compared to evaluate this alternative: incineration, gasification, and pyrolysis. In recent years, a lot of research work has been done to evaluate the application of these technologies to leather solid waste.