LCA for emerging waste treatment technologies: theoretical approach and practical application

Our work is focusing on the assessment of the life cycle environmental performance of emerging technologies on waste treatment, by applying the LCA principles and tools (EASETECH, SimaPro). These technologies aim at the valorisation of waste for the production of bio-based products, the recovery of materials from waste and the optimization of established waste treatment technologies. A summarizing scheme including the feedstock types and the main processes used as well as the resulting products is illustrated in Figure 1. The technology readiness level (TRL) of the examined treatment schemes ranges between 3-6, while this diversification is also obvious within the treatment schemes themselves. The main aim for conducting LCA in all of the aforementioned emerging technologies is to timely inform the design and development process in order to support decision making for future investments. Please click Additional Files below to see the full abstract. Please click Download on the upper right corner to see the presentation

PRODUCTION CHARACTERIZATION AND ADSORPTIVE CAPACITY OF ACTIVATED CARBONS FROM GREEK LIGNITE

ΟΙ ΣΤΟΧΟΙ ΤΗΣ ΕΡΓΑΣΙΑΣ ΑΥΤΗΣ ΗΤΑΝ ΝΑ ΕΞΕΤΑΣΤΕΙ Η ΔΡΑΣΗ ΤΩΝ ΑΝΟΡΓΑΝΩΝ ΣΥΣΤΑΤΙΚΩΝΣΤΗΝ ΑΝΑΠΤΥΞΗ ΤΗΣ ΠΟΡΩΔΟΥΣ ΔΟΜΗΣ ΚΑΙ ΣΤΗΝ ΤΑΧΥΤΗΤΑ ΑΝΤΙΔΡΑΣΗΣ ΚΑΤΑ ΤΗΝ ΠΑΡΑΓΩΓΗ ΤΩΝ ΕΝΕΡΓΩΝ ΑΝΘΡΑΚΩΝ ΜΕ ΤΗΝ ΠΡΟΣΡΟΦΗΤΙΚΗ ΤΟΥΣ ΙΚΑΝΟΤΗΤΑ ΚΑΙ ΝΑ ΑΝΑΠΤΥΧΘΕΙΕΝΑ ΜΑΘΗΜΑΤΙΚΟ ΜΟΝΤΕΛΟ ΠΡΟΣΡΟΦΗΣΗΣ ΣΕ ΣΥΣΚΕΥΕΣ ΑΣΥΝΕΧΟΥΣ ΚΑΙ ΣΥΝΕΧΟΥΣ ΛΕΙΤΟΥΡΓΙΑΣ. ΟΙ ΕΝΕΡΓΟΙ ΑΝΘΡΑΚΕΣ ΠΑΡΑΣΚΕΥΑΣΘΗΚΑΝ ΑΠΟ ΕΛΛΗΝΙΚΟ ΛΙΓΝΙΤΗ ΜΕ ΥΨΗΛΗ ΠΕΡΙΕΚΤΙΚΟΤΗΤΑ ΣΕ ΑΝΟΡΓΑΝΑ ΣΥΣΤΑΤΙΚΑ ΣΕ ΑΤΜΟΣΦΑΙΡΑ CO2 ΓΙΑ ΔΙΑΦΟΡΕΤΙΚΕΣ ΘΕΡΜΟΚΡΑΣΙΕΣ ΚΑΙ ΧΡΟΝΟΥΣ ΠΑΡΑΜΟΝΗΣ. ΕΝΕΡΓΟΙ ΑΝΘΡΑΚΕΣ ΠΑΡΑΧΘΗΚΑΝ ΕΠΙΣΗΣ ΑΠΟ ΛΙΓΝΙΤΗ ΠΟΥ ΥΠΟΒΛΗΘΗΚΕ ΣΕ ΚΑΤΕΡΓΑΣΙΑ ΜΕ ΔΙΑΦΟΡΕΤΙΚΑ ΔΙΑΛΥΜΑΤΑ ΟΞΕΩΝ ΓΙΑ ΤΗΝ ΑΠΟΜΑΚΡΥΝΣΗ ΤΩΝΑΝΟΡΓΑΝΩΝ ΣΥΣΤΑΤΙΚΩΝ. ΣΤΟ ΧΑΡΑΚΤΗΡΙΣΜΟ ΤΗΣ ΠΟΡΩΔΟΥΣ ΔΟΜΗΣ ΧΡΗΣΙΜΟΠΟΙΗΘΗΚΕ Η ΠΡΟΣΡΟΦΗΣΗ Ν2 ΣΤΟΥΣ 77Κ ΚΑΙ CO2 ΣΤΟΥΣ 298 Κ. Η ΑΠΟΜΑΚΡΥΝΣΗ ΤΩΝ ΚΑΤΑΛΥΤΙΚΩΝ ΑΝΟΡΓΑΝΩΝ ΣΥΣΤΑΤΙΚΩΝ ΠΡΟΚΑΛΕΣΕ ΤΗΝ ΕΛΑΤΤΩΣΗ ΤΗΣ ΤΑΧΥΤΗΤΑΣ ΕΝΕΡΓΟΠΟΙΗΣΗΣ ΚΑΙ ΤΗΝ ΠΑΡΑΓΩΓΗ ΕΝΕΡΓΩΝ ΑΝΘΡΑΚΩΝ ΜΕΛΕΤΗΘΗΚΕ ΓΙΑ ΤΗΝ ΑΠΟΜΑΚΡΥΝΣΗ ΦΑΙΝΟΛΗΣ, ΦΟΥΛΒΙΚΟΥ ΟΞΕΟΣ ΚΑΙ ΙΟΝΤΩΝ ΑΡΣΕΝΙΚΟΥ ΑΠΟ ΥΔΑΤΙΚΑ ΔΙΑΛΥΜΑΤΑ. (ΠΕΡΙΚΟΠΗ ΠΕΡΙΛΗΨΗΣ)THE OBJECTIVES OF THIS WORK WERE TO EXAMINE THE EFFECT OF MINERAL MATTER ON THEPORE STRUCTURE DEVELOPMENT AND THE REACTION RATE DURING THE PRODUCTION OF ACTIVATED CARBONS, TO INVESTIGATE THE RELATIONSHIP BETWEEN THE PHYSICO-CHEMICAL PROPERTIES OF ACTIVATED CARBONS AND THEIR ADSORPTION CAPACITY AND TO DEVELOP A MATHEMATICAL MODEL THAT DESCRIBES ADSORPTION ON ACTIVATED CARBON COLUMNS. ACTIVATED CARBONS PRODUCED FROM GREEK LIGNITE WITH A HIGH MINERAL MATTER CONTENT UNDER VARIOUS EXPERIMENTAL CONDITIONS USING CO2 AS OXIDING AGENT. REMOVAL OF INORGANIC IMPURITIES WAS ACCOMPLISHED BY ACID WASHING OF RAW LIGNITE WITH DIFFERENT ACID SOLUTIONS. ACTIVATED CARBONS WERE ALSO PRODUCED FROM ACID TREATED LIGNITE WITH DIFFERENT ASH CONTENT. FOR THE CHARACTERIZATION OF ACTIVATED CARBONS ADSOPTION OF N2 AT 77 K AND CO2 AT 298K WAS USED. REMOVAL OF INORGANIC IMPURITIES BROUGHT ABOUT A LOWERING IN REACTIVITY AND AN INCREASE IN THE MICROPORE SURFACE AREA OF ACTIVATED CARBONS. ADSORTION STUDIES WERE PERFORMED IN ORDER TO EVALUATE THE EFFICIENCY OF VARIOUS ACTIVATED CARBONS TO REMOVE TOXIC SUBSTANCES FROM WATER. TWO ORGANIC AND ONE ORGANIC SUBSTANCE WERE USED. THESE WERE PHENOL, FULVIC ACID AND ARSENIC IONS. THE ADSORPTIVE CAPACITY OF ACTIVATED CARBONS DEPENDED PRIMARILY ON THE ASH CONTENT AND THE COMPOUND. (ABSTRACT TRUNCATED

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Fouling Issues in Membrane Bioreactors (MBRs) for Wastewater Treatment: Major Mechanisms, Prevention and Control Strategies

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