@article{Madeira_Carvalho_Ribau Teixeira_Almeida_2022, title={Phytoremediation as a Sustainable Alternative for Organic Matter Removal From Slaughterhouse Wastewater Pretreated by Immediate One-Step Lime Precipitation}, volume={7}, url={https://knepublishing.com/index.php/KnE-Materials/article/view/11621}, DOI={10.18502/kms.v7i1.11621}, abstractNote={<p>In this study, slaughterhouse wastewater previously treated by immediate one-step lime precipitation was treated using a vertical flow constructed wetland (VFCW). A VFCW pilot scale planted with Vetiveria zizanioides in light expanded clay aggregates was used to study the influence of the organic load applied (3 to 212 g m<sup>−2</sup> d<sup>−1</sup>) and the bed depth of the VFCW (0.35 and 0.70 m) on the organic matter removal (COD). Two VFCWs operated in parallel under continuous flow, and a hydraulic load of around 80 L m<sup>−2</sup> d<sup>−1</sup> was used. The results indicated that an increase in the organic load decreased COD removal efficiency. The bed depth of the VFCW had a significant influence on the removal of organic matter, with greater removal at high bed depths. For organic loads applied up to 9.5 g m<sup>−2</sup> d<sup>−1</sup>, COD removal efficiencies of 71.4 ± 4.0% and 85.2 ± 3.4% were observed for lower and higher VFCW bed depth, respectively, which met the requirements for water reuse for irrigation. Throughout the tests, <em>Vetiveria zizanioides</em> did not show signs of toxicity, and its growth was substantial.</p> <p><strong>Keywords:</strong> slaughterhouse wastewater, vertical flow constructed wetlands, <em>Vetiveria zizanioides</em>, organic matter removal, immediate one-step lime precipitation</p&gt;}, number={1}, journal={KnE Materials Science}, author={Madeira, Luís and Carvalho, Fátima and Ribau Teixeira, Margarida and Almeida, Adelaide}, year={2022}, month={Aug.}, pages={176–183} }