Wastewater disposal to landfill-sites: a synergistic solution for centralized management of olive mill wastewater and enhanced production of landfill gas

The present paper focuses on a largely unexplored field of landfill-site valorization in combination with the construction and operation of a centralized olive mill wastewater (OMW) treatment facility. The latter consists of a wastewater storage lagoon, a compact anaerobic digester operated all year round and a landfill-based final disposal system. Key elements for process design, such as wastewater pretreatment, application method and rate, and the potential effects on leachate quantity and quality, are discussed based on a comprehensive literature review. Furthermore, a case-study for eight (8) olive mill enterprises generating 8700 m(3) of wastewater per year, was conceptually designed in order to calculate the capital and operational costs of the facility (transportation, storage, treatment, final disposal). The proposed facility was found to be economically self-sufficient, as long as the transportation costs of the OMW were maintained at <= 4.0 (sic)/m(3). Despite that EU Landfill Directive prohibits wastewater disposal to landfills, controlled application, based on appropriately designed pre-treatment system and specific loading rates, may provide improved landfill stabilization and a sustainable (environmentally and economically) solution for effluents generated by numerous small- and medium-size olive mill enterprises dispersed in the Mediterranean region

Dissolution Kinetics of Toluene Pools in Saturated Porous Media

Proceedings of the 1993 Georgia Water Resources Conference, April 20-21, 1993, Athens, Georgia.Sponsored and Organized by: U.S. Geological Survey, Georgia Department of Natural Resources, The University of Georgia, Georgia State University, Georgia Institute of TechnologyThis book was published by the Institute of Natural Resources, The University of Georgia, Athens, Georgia 30602 with partial funding provided by the U.S. Department of Interior, Geological Survey, through the Georgia Water Research Institute as authorized by the Water Resources Research Act of 1984 (P.L. 98-242). The views and statements advanced in this publication are solely those of the authors and do not represent official views or policies of the University of Georgia or the U.S. Geological Survey or the conference sponsors

Dissolution kinetics of NAPL pools in saturated porous areas

Issued as Annual progress report, and Final project report, Project E-20-65

Effects of Activated Carbon on Reactions of Free and Combined Chlorine With Phenols (Chlorination, Gac)

253 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1985.The use of prechlorination in drinking water treatment results in contact of free or combined chlorine with activated carbon, which is used to remove organic compounds from water. Free chlorine reacts with a group of phenols (phenol, guaiacol, catechol, 2,6-dimethoxyphenol, p-chlorophenol) in dilute aqueous solutions (10('-5)M), to produce mono-, di-, or trichloroderivatives. When free chlorine reacts with phenols adsorbed on granular activated carbon (GAC), however, many additional products are formed. GAC promotes reactions, such as hydroxylation, oxidation to quinones, chlorine substitution, carboxylation, and dimer formation.Phenols react slowly with monochloramine in solution, giving low yields of chlorinated phenols. When monochloramine reacts with phenols adsorbed on GAC, however, principally hydroxy- and chlorohydroxybiphenyls are formed.The formation of chlorohydroxybiphenyls (hydroxylated PCBs) (in vivo metabolites of PCBs) is particularly important, because of their potential toxicity. Such compounds are the main reaction products from chlorophenols, but they are also formed in smaller amounts from nonchlorinated phenols.Furthermore, GAC becomes very reactive when it is preoxidized with free chlorine. Hydroxy- and chlorohydroxybiphenyls, respectively, are formed from phenol and 2,4-dichlorophenol adsorbed on preoxidized F-400 GAC, in the absence of chlorine.The experimental data show that surface free radicals are produced from the oxidation of GAC with chlorine. Treatment with a free radical quencher, BHT, inhibits the promoting role of GAC. Some of the free radicals on the GAC surface are associated with oxygen-containing functional groups. Outgassing of GAC at high temperatures results in reduction of surface oxygen and free radical concentration, and ability of carbon to promote the surface reactions.p-Benzoquinone and other products of the HOCl-phenol-GAC reaction can be displaced from the activated carbon column, by using an influent containing a strongly adsorbed compound (2,4-dichlorophenol). Computer simulations with the homogeneous surface diffusion model also show that there is a potential for desorption for some of these products.U of I OnlyRestricted to the U of I community idenfinitely during batch ingest of legacy ETD

sj-docx-1-wmr-10.1177_0734242X231198424 – Supplemental material for Management of COVID-19 healthcare waste based on the circular economy hierarchy: A critical review

Supplemental material, sj-docx-1-wmr-10.1177_0734242X231198424 for Management of COVID-19 healthcare waste based on the circular economy hierarchy: A critical review by Evangelos A Voudrias in Waste Management & Research</p