Engineering Commons^™

Stormwater Bioretention: Nitrogen, Phosphorous And Metal Removal By Plants, Malgorzata Rycewicz-Borecki

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Stormwater runoff is an environmental concern. It increases the volume and velocity of surface water flow and contains high pollutant concentrations. High flows erode stream channels. Nutrients in the runoff cause eutrophication. Some metals from stormwater runoff is regulated by the Federal National Pollution Discharge Elimination System (NPDES). Bioretention (BR) systems are often used in response to these regulations to retain and treat this stormwater runoff.

This study conducted greenhouse and field experiments, and evaluated differences in nutrient and metal removal among plant species that are typically found growing in BR systems but are not typically investigated in this detail. …

Catalytic Pyrolysis Of Olive Mill Wastewater Sludge, Hamza Abdellaoui

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

From 2008 to 2013, an average of 2,821.4 kilotons/year of olive oil were produced around the world. The waste product of the olive mill industry consists of solid residue (pomace) and wastewater (OMW). Annually, around 30 million m³ of OMW are produced in the Mediterranean area, 700,000 m³ year⁻¹ in Tunisia alone. OMW is an aqueous effluent characterized by an offensive smell and high organic matter content, including high molecular weight phenolic compounds and long-chain fatty acids. These compounds are highly toxic to micro-organisms and plants, which makes the OMW a serious threat to the environment if …