RICICLA GROUP

Milano, Italy

RICICLA GROUP

Milano, Italy
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Salati S.,RICICLA Group | Scaglia B.,RICICLA Group | Di Gregorio A.,Sorain Cecchini Tecno Srl | Carrera A.,Sorain Cecchini Tecno Srl | Adani F.,RICICLA Group
Bioresource Technology | Year: 2013

The aim of this work was to evaluate the effects of short full scale MBT process (28d) getting a biological stability of DRI<1000mg O2kgVS-1h-1, on the impact of leachate produced in simulated landfill. As consequence of that, waste was processed by full scale MBT and both untreated and treated waste were successively incubated in simulated landfills for 1year. Leachates were collected at different incubation times and characterized. Results obtained indicated that MBT allowed waste-organic matter (OM) reduction favoring, also, optimal condition for successive OM degradation in the simulated landfill.Final results indicated a total reduction of leachate impact for the treated waste (DRI of 978mg O2kgVS-1h-1) with respect to the untreated waste of: -54%, -69%, -77%, -70%, -81% and -16% for NTK, NH3, TOC, COD, BOD5 and total heavy metal contents, respectively. © 2012 Elsevier Ltd.


Scaglia B.,RICICLA GROUP | Salati S.,RICICLA GROUP | Di Gregorio A.,SORAIN CECCHINI TECNO Srl | Carrera A.,SORAIN CECCHINI TECNO Srl | And 2 more authors.
Bioresource Technology | Year: 2013

The aim of this work was to evaluate the effects of full scale MBT process (28 d) in removing inhibition condition for successive biogas (ABP) production in landfill and in reducing total waste impact. For this purpose the organic fraction of MSW was treated in a full-scale MBT plant and successively incubated vs. untreated waste, in simulated landfills for one year.Results showed that untreated landfilled-waste gave a total ABP reduction that was null. On the contrary MBT process reduced ABP of 44%, but successive incubation for one year in landfill gave a total ABP reduction of 86%. This ABP reduction corresponded to a MBT process of 22. weeks length, according to the predictive regression developed for ABP reduction vs. MBT-time.Therefore short MBT allowed reducing landfill impact, preserving energy content (ABP) to be produced successively by bioreactor technology since pre-treatment avoided process inhibition because of partial waste biostabilization. © 2013 Elsevier Ltd.


Salati S.,RICICLA GROUP | Scaglia B.,RICICLA GROUP | di Gregorio A.,Sorain Cecchini Tecno Srl | Carrera A.,Sorain Cecchini Tecno Srl | Adani F.,RICICLA GROUP
Bioresource Technology | Year: 2013

The aim of this paper was to study the evolution of DOM during 1. year of observation in simulated landfill, of aerobically treated vs. untreated organic fraction of MSW.Results obtained indicated that aerobic treatment of organic fraction of MSW permitted getting good biological stability so that, successive incubation under anaerobic condition in landfill allowed biological process to continue getting a strong reduction of soluble organic matter (DOM) that showed, also, an aromatic character. Incubation of untreated waste gave similar trend, but in this case DOM decreasing was only apparent as inhibition of biological process in landfill did not allow replacing degraded/leached DOM with new material coming from hydrolysis of fresh OM. © 2013 Elsevier Ltd.


Sciarria T.P.,RICICLA GROUP | Sciarria T.P.,University of Rome Tor Vergata | Tenca A.,RICICLA GROUP | D'Epifanio A.,University of Rome Tor Vergata | And 7 more authors.
Bioresource Technology | Year: 2013

Improving electricity generation from wastewater (DW) by using olive mill wastewater (OMW) was evaluated using single-chamber microbial fuel cells (MFC). Doing so single-chambers air cathode MFCs with platinum anode were fed with domestic wastewater (DW) alone and mixed with OMW at the ratio of 14:1 (w/w). MFCs fed with DW+OMW gave 0.38V at 1kΩ, while power density from polarization curve was of 124.6mW m-2. The process allowed a total reduction of TCOD and BOD5 of 60% and 69%, respectively, recovering the 29% of the coulombic efficiency. The maximum voltage obtained from MFC fed with DW+OMW was 2.9 times higher than that of cell fed with DW. DNA-fingerprinting showed high bacterial diversity for both experiments and the presence on anodes of exoelectrogenic bacteria, such as Geobacter spp. Electrodes selected peculiar consortia and, in particular, anodes of both experiments showed a similar specialization of microbial communities independently by feeding used. © 2013 Elsevier Ltd.


Nguyen M.-T.,University of Rome Tor Vergata | Mecheri B.,University of Rome Tor Vergata | D'Epifanio A.,University of Rome Tor Vergata | Sciarria T.P.,University of Rome Tor Vergata | And 3 more authors.
International Journal of Hydrogen Energy | Year: 2014

Iron-chelated electrocatalysts for the oxygen reduction reaction (ORR) in a microbial fuel cell (MFC) were prepared from sodium ferric ethylenediamine-N, N′-bis(2-hydroxyphenylacetic acid) (FeE), sodium ferric diethylene triamine pentaacetic acid (FeD) supported on carbon Vulcan XC-72R carbon black and multi-walled carbon nanotubes (CNTs). Catalyst morphology was investigated by TEM; and the total surfaces areas as well as the pore volumes of catalysts were examined by nitrogen physisorption characterization. The catalytic activity of the iron based catalysts towards ORR was studied by cyclic voltammetry, showing the higher electrochemical activity of FeE in comparison with FeD and the superior performance of catalysts supported on CNT rather than on Vulcan XC-72R carbon black. FeE/CNT was used as cathodic catalyst in a microbial fuel cell (MFC) using domestic wastewater as fuel. The maximum current density and power density recorded are 110 (mA m-2) and 127 ± 0.9 (mW m-2), respectively. These values are comparable with those obtained using platinum on carbon Vulcan (0.13 mA m-2 and 226 ± 0.2 mW m-2), demonstrating that these catalysts can be used as substitutes for commercial Pt/C. Copyright © 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.


The aim of this paper was to study the evolution of DOM during 1 year of observation in simulated landfill, of aerobically treated vs. untreated organic fraction of MSW. Results obtained indicated that aerobic treatment of organic fraction of MSW permitted getting good biological stability so that, successive incubation under anaerobic condition in landfill allowed biological process to continue getting a strong reduction of soluble organic matter (DOM) that showed, also, an aromatic character. Incubation of untreated waste gave similar trend, but in this case DOM decreasing was only apparent as inhibition of biological process in landfill did not allow replacing degraded/leached DOM with new material coming from hydrolysis of fresh OM.

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