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Titolo:
A multi-component numerical leach model coupled with a general chemical speciation code
Autore:
Park, JY; Batchelor, B;
Indirizzi:
Texas A&M Univ, Dept Civil Engn, College Stn, TX 77840 USA Texas A&M UnivCollege Stn TX USA 77840 l Engn, College Stn, TX 77840 USA Hanyang Univ, Dept Civil Engn, Seoul 133791, South Korea Hanyang Univ Seoul South Korea 133791 il Engn, Seoul 133791, South Korea
Titolo Testata:
WATER RESEARCH
fascicolo: 1, volume: 36, anno: 2002,
pagine: 156 - 166
SICI:
0043-1354(200201)36:1<156:AMNLMC>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRANSPORT; GROUNDWATER; SIMULATION; WASTES;
Keywords:
leach model; chemical equilibrium model; leach test; dynamic leaching test; solidification; stabilization;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Batchelor, B Texas A&M Univ, Dept Civil Engn, College Stn, TX 77840 USA Texas A&M Univ College Stn TX USA 77840 ge Stn, TX 77840 USA
Citazione:
J.Y. Park e B. Batchelor, "A multi-component numerical leach model coupled with a general chemical speciation code", WATER RES, 36(1), 2002, pp. 156-166

Abstract

A multi-component numerical leach model (SBLEM) was developed by coupling a general chemical speciation code with a modified Crank-Nicolson algorithmto determine the leaching behavior of contaminants in stabilized/solidified (s/s) wastes. The thermodynamic database of the speciation code was modified using batch leaching data. SBLEM was evaluated by simulating a dynamic leaching test of cement-treated combined bottom and fly ash from a municipal solid waste (MSW) incinerator. Simulations used an input composition prepared from acid neutralization capacity (ANC) test data of the ash. The results show that SBLEM can reasonably predict the dynamic leaching behavior ofmetals from the cement-treated ash when the ANC of the ash and pH-solubility curves of metals are well described. This indicates SBLEM simulations may be able to augment or replace experimental leaching tests that can consume a substantial period of time ( > 2 months) and in some cases, provide unreliable results. (C) 2001 Elsevier Science Ltd. All rights reserved.

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Documento generato il 30/03/20 alle ore 10:14:47