IN/0220 - SANITARY AND ENVIRONMENTAL ENGINEERING LABORATORY
Academic Year 2021/2022
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GIORGIA DE GIOANNIS (Tit.)
- Teaching style
- Lingua Insegnamento
|[70/86] ENVIRONMENTAL AND LAND ENGINEERING||[86/00 - Ord. 2016] PERCORSO COMUNE||2||25|
- Knowledge and understanding: The laboratory aims to provide students with the knowledge required to identify and quantify the main contamination phoenomena occurring on enviromental matrices.
- Applying knowledge and understanding: The proposed activities within the Laboratory will allow the student to know and understand the steps required for an adequate characterization of a contamination phenomena, to familiarize with the equipments available in a chemical-environmental laboratory, to apply the analytical methods required for the quantification of main contaminants in solid or liquid phases .
- Making judgements: At the end of the course, the student will have acquired the capacity of elaborate and critically understand the obtained results
- Communication skills: At the end of the course, the student will have acquired a more deep knowledge of the parameters commonly used to characterize and quantify environmental pollution of water bodies or soils.
- Learning skill: the student will also be able to execute a basic chemical/physical characterization of wastewaters, liquid waste or solid waste.
Basic knowledge of Basic Chemistry, Organic Chemistry and Environmental-Sanitary Engineering.
Lesson 1: 4 h. Introduction to environmental-chemical laboratory.
Safety and risk management procedures on chemical laboratories. Use of basic laboratory devices (laboratory glassware, chemical droppers, balances, stoves, muffles, dryers, aspirating hoods, heating plate, stirrers).Use of basic analytical laboratory devices: calibration and measurement of pH, dissolved oxigen, redox potential. Preparation of a salt solution (KCl and NaCl). Preparation of some reagents: Mohr salt, potassium bichromate, Seignette salt.
Lesson 2: 3 h. Sampling and analysis methods.
Sampling methods: UNI 10802 method. Sample prepation techniques: homogeneization, quartering, grinding, sieving. Sample storage. Introduction to the titrimetric, colorimetric- spectrophotometric and chromatographic methods.Precision and accuracyof a method. Calibration of a laboratory device.
Lesson 3: 3 h. Basic characterization of environmental matrices.
Basic characterization of wastewaters: total suspendend solids (TSS), volatile suspendend solid (VSS). Basic characterization of solid waste: total solids, volatile solids, pH. Elemental analysis: CHN analyzer. Lower calorific value analizer.
Lesson 4: 3 h. Measurements of organic compounds.
Measurement of Chemical oxygen demand (COD).
Lesson 5: 3 h. Measurements of organic compounds.
Measurement of Total organic carbon (TOC). Measurement of biodegradable organic matter: BOD5 in a wastewater, respirometric index in a solid waste.
Lesson 6: 3 h. Measurement of nitrogen compounds.
Measurement of Total Kjeldahl Nitrogen (TKN): Kjeldahl method with acid digestion. Measurement of NH3 (colorimetric method), nitrates and nitrites (by means of ion chromatography).
Lesson 7: 3 h. Cromatographic methods for organic compounds.
Principal extraction methods: liquid/liquid, liquid/solid. Extraction of organic compounds from a solid matrix: ASE extractor. Specific organic compounds (HPLC and Gas chromatography with headspace and FID detector).
Lesson 8: 3 h. Evaluation of heavy metals.
Total Metal content (acid digestion, ICP-OES analysis). Leaching Tests: batch and column methods.
Lessons will be held at the Environmental-Chemical Laboratory of DICAAR. After a preliminary introduction illustrating aims and scopes of the analytical protocol, students will execute the analytical method of interest under the supervision of the Professors and Researchers, following the safety procedures dictated within the laboratory activities.
Verification of learning
Students must to prepare a written report concerning the activity carried out during the classes, that will undergo to a revision in order to provide the expected credits.
Standard Method for Wastewaters
At least 20 hours of laboratory attendance is required