Aluminum and aluminum alloys in municipal solid waste incineration (MSWI) bottom ash: A potential source for the production of hydrogen gas

Amirhomayoun Saffarzadeh, Nithiya Arumugam, Takayuki Shimaoka

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Bottom ash residues from three incinerators (K, N, and R) in Japan were used to characterize the metal aluminum and aluminum alloys and their potential for hydrogen gas generation. The samples were sieved into four fractions: (1) d ≤ 0.6 mm, (2) 0.6 ≤ d ≤ 1.0 mm, (3) 1.0 ≤ d ≤ 2.0 mm, and (4) 2.0 ≤ d ≤ 4.75 mm for characterization and hydrogen gas evolution experiments. Based on microscopic and microanalytical (SEM-EDX) examinations, the metal aluminum alloys with high purity (> 90 wt% Al in most occurrences) and various sizes were randomly distributed in the ash particles. X-ray diffraction (XRD) analysis was carried out to identify the primary and secondary mineral phases in the ash residues before and after the hydrogen gas generation experiments. Batch experiments were performed to evaluate the hydrogen generation potential in each bottom ash fraction under agitated (200 rpm) and non-agitated conditions at 40 °C for 20 days. The highest amount of hydrogen gas (cumulative) under agitation was 39.4, 10.0, and 8.4 l/kg of dry ash for N2, R2, and K2, respectively. Under non-agitated condition, N2, R2, and K2 also yielded the highest amount of hydrogen, which was 38.3, 6.5, and 6.8 l/kg of dry ash, respectively. As a result of these experiments, the metal aluminum aggregates considerably converted to gel-like and crystalline Al-rich hydrate phases. The inherent alkalinity of the ash environment (pH ≥ 12) and the existence of metal aluminum were considered the key parameters to trigger and maintain the hydrogen generation reactions.

Original languageEnglish
Pages (from-to)820-831
Number of pages12
JournalInternational Journal of Hydrogen Energy
Volume41
Issue number2
DOIs
Publication statusPublished - Jan 12 2016

Fingerprint

Ashes
solid wastes
incinerators
Waste incineration
Municipal solid waste
ashes
aluminum alloys
Aluminum alloys
aluminum
Aluminum
Hydrogen
hydrogen
Gases
gases
Metals
metals
Experiments
gas evolution
alkalinity
agitation

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Aluminum and aluminum alloys in municipal solid waste incineration (MSWI) bottom ash : A potential source for the production of hydrogen gas. / Saffarzadeh, Amirhomayoun; Arumugam, Nithiya; Shimaoka, Takayuki.

In: International Journal of Hydrogen Energy, Vol. 41, No. 2, 12.01.2016, p. 820-831.

Research output: Contribution to journalArticle

@article{ec97762a79c541cf89b0d9a3215a2c24,
title = "Aluminum and aluminum alloys in municipal solid waste incineration (MSWI) bottom ash: A potential source for the production of hydrogen gas",
abstract = "Bottom ash residues from three incinerators (K, N, and R) in Japan were used to characterize the metal aluminum and aluminum alloys and their potential for hydrogen gas generation. The samples were sieved into four fractions: (1) d ≤ 0.6 mm, (2) 0.6 ≤ d ≤ 1.0 mm, (3) 1.0 ≤ d ≤ 2.0 mm, and (4) 2.0 ≤ d ≤ 4.75 mm for characterization and hydrogen gas evolution experiments. Based on microscopic and microanalytical (SEM-EDX) examinations, the metal aluminum alloys with high purity (> 90 wt{\%} Al in most occurrences) and various sizes were randomly distributed in the ash particles. X-ray diffraction (XRD) analysis was carried out to identify the primary and secondary mineral phases in the ash residues before and after the hydrogen gas generation experiments. Batch experiments were performed to evaluate the hydrogen generation potential in each bottom ash fraction under agitated (200 rpm) and non-agitated conditions at 40 °C for 20 days. The highest amount of hydrogen gas (cumulative) under agitation was 39.4, 10.0, and 8.4 l/kg of dry ash for N2, R2, and K2, respectively. Under non-agitated condition, N2, R2, and K2 also yielded the highest amount of hydrogen, which was 38.3, 6.5, and 6.8 l/kg of dry ash, respectively. As a result of these experiments, the metal aluminum aggregates considerably converted to gel-like and crystalline Al-rich hydrate phases. The inherent alkalinity of the ash environment (pH ≥ 12) and the existence of metal aluminum were considered the key parameters to trigger and maintain the hydrogen generation reactions.",
author = "Amirhomayoun Saffarzadeh and Nithiya Arumugam and Takayuki Shimaoka",
year = "2016",
month = "1",
day = "12",
doi = "10.1016/j.ijhydene.2015.11.059",
language = "English",
volume = "41",
pages = "820--831",
journal = "International Journal of Hydrogen Energy",
issn = "0360-3199",
publisher = "Elsevier Limited",
number = "2",

}

TY - JOUR

T1 - Aluminum and aluminum alloys in municipal solid waste incineration (MSWI) bottom ash

T2 - A potential source for the production of hydrogen gas

AU - Saffarzadeh, Amirhomayoun

AU - Arumugam, Nithiya

AU - Shimaoka, Takayuki

PY - 2016/1/12

Y1 - 2016/1/12

N2 - Bottom ash residues from three incinerators (K, N, and R) in Japan were used to characterize the metal aluminum and aluminum alloys and their potential for hydrogen gas generation. The samples were sieved into four fractions: (1) d ≤ 0.6 mm, (2) 0.6 ≤ d ≤ 1.0 mm, (3) 1.0 ≤ d ≤ 2.0 mm, and (4) 2.0 ≤ d ≤ 4.75 mm for characterization and hydrogen gas evolution experiments. Based on microscopic and microanalytical (SEM-EDX) examinations, the metal aluminum alloys with high purity (> 90 wt% Al in most occurrences) and various sizes were randomly distributed in the ash particles. X-ray diffraction (XRD) analysis was carried out to identify the primary and secondary mineral phases in the ash residues before and after the hydrogen gas generation experiments. Batch experiments were performed to evaluate the hydrogen generation potential in each bottom ash fraction under agitated (200 rpm) and non-agitated conditions at 40 °C for 20 days. The highest amount of hydrogen gas (cumulative) under agitation was 39.4, 10.0, and 8.4 l/kg of dry ash for N2, R2, and K2, respectively. Under non-agitated condition, N2, R2, and K2 also yielded the highest amount of hydrogen, which was 38.3, 6.5, and 6.8 l/kg of dry ash, respectively. As a result of these experiments, the metal aluminum aggregates considerably converted to gel-like and crystalline Al-rich hydrate phases. The inherent alkalinity of the ash environment (pH ≥ 12) and the existence of metal aluminum were considered the key parameters to trigger and maintain the hydrogen generation reactions.

AB - Bottom ash residues from three incinerators (K, N, and R) in Japan were used to characterize the metal aluminum and aluminum alloys and their potential for hydrogen gas generation. The samples were sieved into four fractions: (1) d ≤ 0.6 mm, (2) 0.6 ≤ d ≤ 1.0 mm, (3) 1.0 ≤ d ≤ 2.0 mm, and (4) 2.0 ≤ d ≤ 4.75 mm for characterization and hydrogen gas evolution experiments. Based on microscopic and microanalytical (SEM-EDX) examinations, the metal aluminum alloys with high purity (> 90 wt% Al in most occurrences) and various sizes were randomly distributed in the ash particles. X-ray diffraction (XRD) analysis was carried out to identify the primary and secondary mineral phases in the ash residues before and after the hydrogen gas generation experiments. Batch experiments were performed to evaluate the hydrogen generation potential in each bottom ash fraction under agitated (200 rpm) and non-agitated conditions at 40 °C for 20 days. The highest amount of hydrogen gas (cumulative) under agitation was 39.4, 10.0, and 8.4 l/kg of dry ash for N2, R2, and K2, respectively. Under non-agitated condition, N2, R2, and K2 also yielded the highest amount of hydrogen, which was 38.3, 6.5, and 6.8 l/kg of dry ash, respectively. As a result of these experiments, the metal aluminum aggregates considerably converted to gel-like and crystalline Al-rich hydrate phases. The inherent alkalinity of the ash environment (pH ≥ 12) and the existence of metal aluminum were considered the key parameters to trigger and maintain the hydrogen generation reactions.

UR - http://www.scopus.com/inward/record.url?scp=84955612802&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84955612802&partnerID=8YFLogxK

U2 - 10.1016/j.ijhydene.2015.11.059

DO - 10.1016/j.ijhydene.2015.11.059

M3 - Article

AN - SCOPUS:84955612802

VL - 41

SP - 820

EP - 831

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

SN - 0360-3199

IS - 2

ER -