TY - JOUR
T1 - Effect of water-sludge ratio and reaction time on the hydrothermal carbonization of olive oil mill wastewater treatment
T2 - Hydrochar characterization
AU - Atallah, Emile
AU - Kwapinski, Witold
AU - Ahmad, Mohammad N.
AU - Leahy, J. J.
AU - Zeaiter, Joseph
N1 - Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/10
Y1 - 2019/10
N2 - Hydrothermal carbonization (HTC) was used to treat olive oil mill wastewater (OOMW) by using water in the absence of any additional reagent. The reaction time and the water-sludge (W/S) ratio were varied, over a broad set of values, to study their effect on the hydrochar products. As reaction time and water-sludge ratio increased, the hydrochar yield decreased from 36% to 7%. In addition, HTC upgraded both carbon and energy contents to very high values, 76% and 36 MJ/kg respectively. Hence, the hydrochars products are good candidates for energy generation. Moreover, the hydrochars products were amorphous and had a hydrophobic oleophilic structure. Their quality and energy yield increased with the decrease in water-sludge ratio while reaction time slightly affected the hydrochar properties. Operating the process at the lowest water-sludge ratio and short reaction time leads to hydrochars with the finest characteristics but at the expense of higher cost due to evaporation rate.
AB - Hydrothermal carbonization (HTC) was used to treat olive oil mill wastewater (OOMW) by using water in the absence of any additional reagent. The reaction time and the water-sludge (W/S) ratio were varied, over a broad set of values, to study their effect on the hydrochar products. As reaction time and water-sludge ratio increased, the hydrochar yield decreased from 36% to 7%. In addition, HTC upgraded both carbon and energy contents to very high values, 76% and 36 MJ/kg respectively. Hence, the hydrochars products are good candidates for energy generation. Moreover, the hydrochars products were amorphous and had a hydrophobic oleophilic structure. Their quality and energy yield increased with the decrease in water-sludge ratio while reaction time slightly affected the hydrochar properties. Operating the process at the lowest water-sludge ratio and short reaction time leads to hydrochars with the finest characteristics but at the expense of higher cost due to evaporation rate.
KW - Heating values of hydrochar
KW - Hydrochar
KW - Hydrothermal carbonization
KW - Wastewater
UR - http://www.scopus.com/inward/record.url?scp=85063672090&partnerID=8YFLogxK
U2 - 10.1016/j.jwpe.2019.100813
DO - 10.1016/j.jwpe.2019.100813
M3 - Article
AN - SCOPUS:85063672090
SN - 2214-7144
VL - 31
SP - -
JO - Journal of Water Process Engineering
JF - Journal of Water Process Engineering
M1 - 100813
ER -