11 documents found, page 1 of 2

Sustainable permeable biobarriers for atrazine removal in packed bed biofilm re...

The synergy between two supported bacterial biofilms of S. equisimilis and P. putida and a sustainable biocarrier (raw pine) was studied, working both as biobarriers for the treatment of water contaminated with atrazine. Firstly, the effects of ATZ exposure on bacterial growth were evaluated, with Gram-positive S. equisimilis being a more tolerant bacterium to higher amounts of the herbicide. The bioremoval of ...

Biowaste valorization on pharmaceuticals and pesticides abatement in aqueous en...

This study focuses on the abatement of pharmaceuticals and pesticides in water using sustainable biosorbents. Adsorption kinetics and equilibrium measurements were performed to characterize the adsorption of fluoxetine hydrochloride (FLX), carbamazepine (CRB) and atrazine (ATZ) by raw pine bark. The amount of adsorbed pollutants by mass of adsorbent followed the order: FLX (0.652 mg/g) > ATZ (0.522 mg/g) > CRB ...

Bacterial biofilm attachment to sustainable carriers as a clean-up strategy for...

Wastewater treatment using biofilm technology with sustainable carriers contributes towards the circular bioeconomy. The use of renewable biological materials and wastes as novel biofilm supports promotes material valorisation and reusability, decreasing the depletion of natural resources and the generation of waste and emissions. This manuscript presents a comprehensive review of the sustainable bacterial biof...

Design and tailoring of sorbents coupled with biodegradors for emerging polluta...

A poluição da água provocada por contaminantes emergentes tem-se tornado um problema global crescente devido ao tratamento ineficaz destes poluentes nas estações de tratamento de águas residuais. Em particular, herbicidas e fármacos têm sido recorrentemente detetados em diferentes matrizes aquosas, tornando-se uma ameaça à biodiversidade aquática e terrestre e à saúde humana. É urgente o desenvolvimento de técn...

Biowaste valorization for emerging pollutant abatement in aqueous phase

The use of raw chemical- or thermal-modified pine bark (10 g/L) as a biosorbent to remove fluoxetine hydrochloride (FLX), carbamazepine (CRB) and atrazine (ATZ) from water at 5 mg/L each was explored in this work. The adsorption efficiency onto raw pine was as follows: FLX > ATZ > CRB. Pine oxidized with HNO3 revealed to be the best modified biosorbent in terms of overall sorbate entrapment capacity (1.95 mg/g)...

Cleaner approach for atrazine removal using recycling biowaste/waste in permeab...

This work addresses the rehabilitation of water contaminated with atrazine, entrapping it in a permeable and sustainable barrier designed with waste materials (sepiolite) and with biomaterials (cork and pine bark). Atrazine adsorption was assessed by kinetics and equilibrium assays and desorption was tested with different extraction solvents. Adsorbed atrazine was 100% recovered from sepiolite using 20% acetoni...

Rehabilitation of a complex industrial wastewater containing heavy metals and o...

This work addresses the treatment of a complex industrial effluent containing high concentrations of metals and spiked with two organic solvents (diethylketone DEK, and methyl ethyl ketone - MEK) using an eco-friendly approach. The treatment system herein proposed consists of a bio-barrier that combines the adsorption capacity of sepiolite with the properties of a Streptococcus equisimilis biofilm with proven a...

Chapter 14 - Retention of organic micro-pollutants by sorption processes

This chapter is a review of the impacts of organic micro-pollutants on the environment and quality of life in general, and of the sorption processes that these molecules go through when released into water, air, or soils. Potential sorbents for these compounds are listed and discussed, with particular focus on low-cost green sorbents, that otherwise would constitute another waste to be treated. The economic and...

A review on biological processes for pharmaceuticals wastes abatement: a growin...

Over the last decades, the production and consumption of pharmaceuticals and health care products grew manifold, allowing an increase in life expectancy and a better life quality for humans and animals, in general. However, the growth in pharmaceuticals production and consumption comes with an increase in waste production, which creates a number of challenges as well as opportunities for the waste management in...

Rehabilitation of water contaminated with an organic solvent by an aerobic bact...