PMID- 37302173
OWN - NLM
STAT- MEDLINE
DCOM- 20230622
LR  - 20230622
IS  - 1095-8630 (Electronic)
IS  - 0301-4797 (Linking)
VI  - 342
DP  - 2023 Sep 15
TI  - CO(2) uptake by activated hydrochar derived from orange peel (Citrus reticulata): 
      Influence of carbonization temperature.
PG  - 118350
LID - S0301-4797(23)01138-6 [pii]
LID - 10.1016/j.jenvman.2023.118350 [doi]
AB  - In this study, activated hydrochar was prepared from orange peel (OP) waste using 
      KOH for the first time for potential environmental applications. The influence of 
      hydrothermal carbonization temperature (180  degrees C, 200  degrees C, and 220  degrees C) on the CO(2) 
      adsorption capacity of OP-derived activated hydrochar (OP-180, OP-200, and 
      OP-220) was investigated. Scanning electron microscope (SEM) images revealed that 
      the activated OP hydrochar has high microporosity, a desired attribute for 
      effective adsorption. The yield and the oxygen content of the hydrochar decreased 
      with the increasing process temperature whereas the carbon content showed an 
      increase. Fourier-transform infrared spectroscopy showed the presence of various 
      functional groups including ketone, aldehydes, esters, and carboxyl in the 
      hydrochar. CO(2) adsorption isotherm was determined for all hydrochar samples. At 
      25  degrees C and 1 bar, OP-220 showed the highest CO(2) uptake at 3.045 mmol/g. The use 
      of OP waste for CO(2) adsorption applications contributes to carbon neutrality 
      and a circular economy.
CI  - Copyright (c) 2023 Elsevier Ltd. All rights reserved.
FAU - Deepak, K R
AU  - Deepak KR
AD  - Department of Mechanical and Industrial Engineering, Manipal Institute of 
      Technology, Manipal Academy of Higher Education, Manipal, 576104, India.
FAU - Mohan, Sooraj
AU  - Mohan S
AD  - Department of Mechanical Engineering, National Institute of Technology Goa, 
      Farmagudi, Ponda, Goa, 403401, India.
FAU - Dinesha, P
AU  - Dinesha P
AD  - Department of Mechanical and Industrial Engineering, Manipal Institute of 
      Technology, Manipal Academy of Higher Education, Manipal, 576104, India. 
      Electronic address: dinesha.p@manipal.edu.
FAU - Balasubramanian, Rajasekhar
AU  - Balasubramanian R
AD  - Department of Civil and Environmental Engineering, College of Design and 
      Engineering, National University of Singapore, 117576, Singapore.
LA  - eng
PT  - Journal Article
DEP - 20230609
PL  - England
TA  - J Environ Manage
JT  - Journal of environmental management
JID - 0401664
RN  - 142M471B3J (Carbon Dioxide)
RN  - 7440-44-0 (Carbon)
SB  - IM
MH  - Temperature
MH  - Carbon Dioxide
MH  - *Citrus sinensis
MH  - *Citrus
MH  - Carbon
MH  - Biomass
OTO - NOTNLM
OT  - Activated carbon
OT  - Biomass
OT  - CO(2)
OT  - Char
OT  - Climate action
OT  - Hydrothermal carbonization
COIS- Declaration of competing interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2023/06/11 19:15
MHDA- 2023/06/22 06:42
CRDT- 2023/06/11 18:00
PHST- 2023/02/16 00:00 [received]
PHST- 2023/06/05 00:00 [revised]
PHST- 2023/06/06 00:00 [accepted]
PHST- 2023/06/22 06:42 [medline]
PHST- 2023/06/11 19:15 [pubmed]
PHST- 2023/06/11 18:00 [entrez]
AID - S0301-4797(23)01138-6 [pii]
AID - 10.1016/j.jenvman.2023.118350 [doi]
PST - ppublish
SO  - J Environ Manage. 2023 Sep 15;342:118350. doi: 10.1016/j.jenvman.2023.118350. 
      Epub 2023 Jun 9.