TITLE

Degradation characteristics of polylactide in thermophilic anaerobic digestion with hyperthermophilic solubilization condition

AUTHOR(S)
Wang, F.; Hidaka, T.; Oishi, T.; Tsuno, H.; Osumi, S.; Tsubota, J.
PUB. DATE
December 2011
SOURCE
Water Science & Technology;2011, Vol. 64 Issue 11, p2135
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
To test whether hyperthermophilic treatment promotes polylactide (PLA) dissolution and methane conversion under anaerobic digestion conditions, a single thermophilic control reactor (55 °C) and a two-phase system consisting of a hyperthermophilic reactor (80 WC) and a thermophilic reactor (55 °C) were continuously fed with a mixture of PLA and artificial kitchen garbage. In Runs 1 and 2, the PLA dissolution ratios in the two-phase system were 79.2±6.5% and 85.2±7.0%, respectively, higher than those of the control. Batch experimental results indicated that hyperthermophilic treatment could promote PLA dissolution to a greater degree as compared with single thermophilic treatment and that ammonia addition also had a promotional effect on PLA dissolution. In the two-phase system, after hyperthermophilic treatment, dissolved PLA was converted to methane gas under the subsequent thermophilic condition.
ACCESSION #
69684620

 

Related Articles

  • Exponential model describing methane production kinetics in batch anaerobic digestion: a tool for evaluation of biochemical methane potential assays. Brulé, Mathieu; Oechsner, Hans; Jungbluth, Thomas // Bioprocess & Biosystems Engineering;Sep2014, Vol. 37 Issue 9, p1759 

    Biochemical methane potential assays, usually run in batch mode, are performed by numerous laboratories to characterize the anaerobic degradability of biogas substrates such as energy crops, agricultural residues, and organic wastes. Unfortunately, the data obtained from these assays lacks...

  • Comparison of Seven Chemical Pretreatments of Corn Straw for Improving Methane Yield by Anaerobic Digestion. Song, Zilin; GaiheYang; Liu, Xiaofeng; Yan, Zhiying; Yuan, Yuexiang; Liao, Yinzhang // PLoS ONE;Apr2014, Vol. 9 Issue 4, p1 

    Agriculture straw is considered a renewable resource that has the potential to contribute greatly to bioenergy supplies. Chemical pretreatment prior to anaerobic digestion can increase the anaerobic digestibility of agriculture straw. The present study investigated the effects of seven chemical...

  • Effect of alkaline pretreatment of food waste on solubilization and biodegradability for anaerobic digestion. Che-yun Eom; Jae-yong Lim; Jae Young Kim; Han Sang Cho // Proceedings of the International Conference on Waste Technology ;2009, p1078 

    Anaerobic digestion is a proper method to treat organic wastes. Recent energy crisis imposes extra advantage on the anaerobic processes due to the potential energy recovery. In order to enhance the performance of anaerobic digestion of food waste i.e., one of the major organic wastes, alkaline...

  • Enhancement of food waste digestion in the hybrid anaerobic solid-liquid system. Liu, X. Y.; Ding, H. B.; Sreeramachandran, S.; Stabnikova, O.; Wang, J. Y. // Water Science & Technology;2008, Vol. 57 Issue 9, p1369 

    The hybrid anaerobic solid-liquid (HASL) system is a modified two-phase anaerobic digester for food waste treatment. To enhance the performance of anaerobic digestion in the HASL system, thermal pre-treatment (heating at 150°C for 1h) and freezing/thawing (freezing for 24 h at 2 208C and then...

  • Elucidation mechanism of organic acids production from organic matter (grass) using digested and partially digested cattle feed. Sonakya, V.; Raizada, N.; Dalhoff, R.; Wilderer, P. A. // Water Science & Technology;2003, Vol. 48 Issue 8, p255 

    The process of anaerobic digestion is highly influenced by the environmental and operational factors like organic acids concentration and the reactor volume occupied by the feed material. The optimum level of organic acids is commonly assumed to be in the range between 2,500 and 3,500 mg/l for...

  • Influence of Recycling Different Leachate Volumes on Refuse Anaerobic Degradation. Hernández-Berriel, Ma. C.; Mañón-Salas, C.; Sánchez-Yáñez, J. M.; Lugo-de la Fuente, J.; Márquez-Benavides, L. // Open Waste Management Journal;2010 Special Issue 2, p155 

    The aim of this work was to determine the appropriate moisture regime, attained by leachate recycling, to achieve the highest municipal solid waste (MSW) biodegradation rate. To this end, leachate characteristics, methane production rate and changes in degraded refuse were studied. Twenty...

  • Thermophilic anaerobic digestion of sewage sludge with high solids content. Feng Wang; Taira Hidaka; Tsutomu Uchida; Jun Tsumori // Water Science & Technology;2014, Vol. 69 Issue 9, p1949 

    The treatment performance of thermophilic anaerobic digestion (AD) of sewage sludge with high solids content was investigated with two laboratory-scale thermophilic anaerobic reactors (R1 and R2) with a feeding of pre-centrifuged sewage sludge. Reactor R1 was fed with sludge of 3.7% total solids...

  • Study on Influence of Ultrasonic Disintegration on Anaerobic Digestion Performance of Urban Sludge. CAO Zhourong; YANG Shunsheng; SUN Kaikai; ZHENG Xipeng // International Journal of Applied Environmental Sciences;2013, Vol. 8 Issue 9, p1055 

    With the dosis of a certain proportion of ultrasound to disintegrate urban sludge, and the application of anaerobic digestion technology, this article aims to analyze and compare the variations of gas output, gas exploitation rate, VS degradation rate and the composition of biogas produced,...

  • Comparison of the biodegradability of the grey fraction of municipal solid waste of Barcelona in mesophilic and thermophilic conditions. Mace, S.; Bolzonella, D.; Cecchi, F.; Mata-Alvarez, J. // Water Science & Technology;2003, Vol. 48 Issue 4, p21 

    The results of the start-up of two digesters in mesophilic and thermophilic conditions, together with its steady results at several organic loading rates are described. A kinetic study is also carried out which allows one to estimate the ultimate methane production, together with the first-order...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics