학술논문
Microbial recycling cells: First steps into a new type of microbial electrochemical technologies, aimed at recovering nutrients from wastewater.
Document Type
Academic Journal
Author
Goglio A; e-Bio Center, Department of Environmental Science and Policy, University of Milan, Via Celoria 2, 20133 Milan, Italy.; Marzorati S; e-Bio Center, Department of Environmental Science and Policy, University of Milan, Via Celoria 2, 20133 Milan, Italy.; Rago L; e-Bio Center, Department of Environmental Science and Policy, University of Milan, Via Celoria 2, 20133 Milan, Italy.; Pant D; Separation & Conversion Technology, Flemish Institute for Technological Research (VITO), Boeretang 200, 2400 Mol, Belgium.; Cristiani P; Ricerca del Sistema Energetico, Via Rubattino 54, 20134 Milano, Italy; e-Bio Center, Department of Environmental Science and Policy, University of Milan, Via Celoria 2, 20133 Milan, Italy.; Schievano A; e-Bio Center, Department of Environmental Science and Policy, University of Milan, Via Celoria 2, 20133 Milan, Italy. Electronic address: andrea.schievano@unimi.it.
Source
Publisher: Elsevier Applied Science Country of Publication: England NLM ID: 9889523 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-2976 (Electronic) Linking ISSN: 09608524 NLM ISO Abbreviation: Bioresour Technol
Subject
Language
English
Abstract
The aim of this work were to study terracotta-based porous air-water separators (4 mm thickness) in microbial recycling cells (MRCs) fed with cow manure (CM), swine manure (SM) and dairy wastewater (DW). Over 125 days, besides the removal of 60-90% of soluble-COD, considerable fractions of the main macronutrients (C, N, P, K, Fe, Mn, Ca, Mg) were removed from the wastewater and deposited on the terracotta separators as both inorganic salts and biomass deposits. Water evaporation at air-water interface as well as the high cathodic pH (10-12), induced by oxygen reduction to OH - , were the predominant factors leading to precipitation. The separators were saturated of up to 10 g per kg of terracotta of the main macronutrients, with negligible concentrations of the main inorganic contaminants. These materials could be directly reused as nutrients-enriched solid conditioners for agricultural soils.
(Copyright © 2019 Elsevier Ltd. All rights reserved.)
(Copyright © 2019 Elsevier Ltd. All rights reserved.)