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Titolo:
SOLID SUBSTRATE ANAEROBIC CO-DIGESTION OF PAPER-MILL SLUDGE, BIOSOLIDS, AND MUNICIPAL SOLID-WASTE
Autore:
POGGIVARALDO HM; VALDES L; ESPARZAGARCIA F; FERNANDEZVILLAGOMEZ G;
Indirizzi:
P3 CONSULTING ENGINEERS,POB 75-202 MEXICO CITY 07300 DF MEXICO IPN,CINVESTAV,DEPT BIOTECHNOL & BIOENGN MEXICO CITY 07738 DF MEXICO CENAPRED MEXICO CITY DF MEXICO UNAM MEXICO CITY DF MEXICO
Titolo Testata:
Water science and technology
fascicolo: 2-3, volume: 35, anno: 1997,
pagine: 197 - 204
SICI:
0273-1223(1997)35:2-3<197:SSACOP>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
METHANOBREVIBACTER-SMITHII;
Keywords:
ANAEROBIC DIGESTION; INOCULUM; MUNICIPAL SOLID WASTE; PAPER MILL SLUDGE; SOLID SUBSTRATE; START-UP; WASTE ACTIVATED SLUDGE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
H.M. Poggivaraldo et al., "SOLID SUBSTRATE ANAEROBIC CO-DIGESTION OF PAPER-MILL SLUDGE, BIOSOLIDS, AND MUNICIPAL SOLID-WASTE", Water science and technology, 35(2-3), 1997, pp. 197-204

Abstract

The Mexican pulp and paper industry and municipal authorities are facing increasing regulatory and cost-related pressures regarding the handling, treatment and disposal of waste sludge and solid wastes. The dry anaerobic digestion (DASS) is a promising alternative for the co-stabilization of waste sludge, municipal and industrial solid wastes. However, appropriate and fast process start-up is a bottleneck for the dissemination of DASS technology in developing countries. This work aimed at determining a reliable and fast DASS startup procedure from non-anaerobic inocula for the digestion of a mixture of paper sludge, wastesludge and municipal solid waste. Three types of inoculum were used: cattle manure (CM), soil (S) and waste activated sludge (WAS). Resultswere analyzed in terms of the stabilization time T-e (the time required to develop a full methanogenic regime) and the overall start-up time T-o (time required to reach at least 25% TS inside the reactor sincethe inoculation). A factorial experiment was implemented; factors were the inoculum type (five combinations of CM, S and WAS), temperature (35 and 55 degrees C) and loading rate (4.5 and 8.2 g VS/kg.d). Results showed that the fastest start-up was obtained with reactors using inoculum I-3 (33% CM, 33% S and 33% WAS) at 55 degrees C and 8.2 g VS/kg.day loading rate. Interestingly, thermophilic regime favoured shorterstabilization times, in spite of the fact that the inocula used were meso- or psychrophilic. Results from DASS reactors that reached steadystate after start-up (I-3 and I-4) showed typical performance responses of 60% removal efficiency (% total VS basis), biogas productivity between 2.7-3.5 NL/kg wrm.day, a in the range 0.3-1.3 and pH around 8. This suggested that the DASS process is a feasible alternative for co-digesting paper-mill sludge, MSW and biosolids. (C) 1997 IAWQ.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 19:27:35