PMID- 33829381
OWN - NLM
STAT- MEDLINE
DCOM- 20230614
LR  - 20230614
IS  - 1614-7499 (Electronic)
IS  - 0944-1344 (Print)
IS  - 0944-1344 (Linking)
VI  - 30
IP  - 28
DP  - 2023 Jun
TI  - Watermelon rinds as cost-efficient adsorbent for acridine orange: a response 
      surface methodological approach.
PG  - 71554-71573
LID - 10.1007/s11356-021-13652-9 [doi]
AB  - In the current investigation, watermelon rinds (WMR) have been utilized as an 
      eco-friendly and cost-efficient adsorbent for acridine orange (AO) from 
      contaminated water samples. Adsorption of AO onto raw (RWM) and thermally treated 
      rinds (TTWM250 and TTWM500) has been studied. The adsorption efficiency of the 
      three adsorbents was evaluated by measuring the % removal (%R) of AO and the 
      adsorption capacity (q(e), mg/g). Dependent variables (%R and q(e)) were 
      optimized as a function of four factors: pH, sorbent dosage (AD), the 
      concentration of AO (DC), and contact time (ST). Box-Behnken (BB) design has been 
      utilized to obtain the optimum adsorption conditions. Prepared adsorbents have 
      been characterized using scanning electron microscopy (SEM), Fourier-transform 
      infrared (FT-IR), and Raman spectroscopies. The surface area of RWM, TTWM250, and 
      TTWM500, as per the Brunauer-Emmett-Teller (BET) analysis, was 2.66, 2.93, and 
      5.03 m(2)/g, respectively. Equilibrium investigations suggest that Freundlich 
      model was perfectly fit for adsorption of AO onto TTWM500. Maximum adsorption 
      capacity (q(max)) of 69.44 mg/g was obtained using the Langmuir equation. 
      Adsorption kinetics could be best described by the pseudo-second-order (PSO) 
      model. The multi-cycle sorption-desorption study showed that TTWM500 could be 
      regenerated with the adsorption efficiency being preserved up to 87% after six 
      cycles.
CI  - (c) 2021. The Author(s).
FAU - El-Shafie, Ahmed S
AU  - El-Shafie AS
AD  - Department of Chemistry and Earth Sciences, College of Arts and Sciences, Qatar 
      University, Doha, 2713, Qatar.
FAU - Hassan, Siham S
AU  - Hassan SS
AD  - Department of Chemistry and Earth Sciences, College of Arts and Sciences, Qatar 
      University, Doha, 2713, Qatar.
FAU - Akther, Nuri
AU  - Akther N
AD  - Department of Chemistry and Earth Sciences, College of Arts and Sciences, Qatar 
      University, Doha, 2713, Qatar.
FAU - El-Azazy, Marwa
AU  - El-Azazy M
AUID- ORCID: 0000-0002-8522-2731
AD  - Department of Chemistry and Earth Sciences, College of Arts and Sciences, Qatar 
      University, Doha, 2713, Qatar. marwasaid@qu.edu.qa.
LA  - eng
PT  - Journal Article
DEP - 20210408
PL  - Germany
TA  - Environ Sci Pollut Res Int
JT  - Environmental science and pollution research international
JID - 9441769
RN  - F30N4O6XVV (Acridine Orange)
RN  - 0 (Water Pollutants, Chemical)
SB  - IM
MH  - *Acridine Orange/analysis/chemistry
MH  - Spectroscopy, Fourier Transform Infrared
MH  - *Water Pollutants, Chemical/analysis
MH  - Kinetics
MH  - Adsorption
PMC - PMC10257614
OTO - NOTNLM
OT  - Acridine orange
OT  - Box-Behnken design
OT  - Eco-friendly adsorbent
OT  - Wastewater
OT  - Watermelon rinds
COIS- The authors declare no competing interests.
EDAT- 2021/04/09 06:00
MHDA- 2023/06/14 06:42
PMCR- 2021/04/08
CRDT- 2021/04/08 06:41
PHST- 2020/12/17 00:00 [received]
PHST- 2021/03/22 00:00 [accepted]
PHST- 2023/06/14 06:42 [medline]
PHST- 2021/04/09 06:00 [pubmed]
PHST- 2021/04/08 06:41 [entrez]
PHST- 2021/04/08 00:00 [pmc-release]
AID - 10.1007/s11356-021-13652-9 [pii]
AID - 13652 [pii]
AID - 10.1007/s11356-021-13652-9 [doi]
PST - ppublish
SO  - Environ Sci Pollut Res Int. 2023 Jun;30(28):71554-71573. doi: 
      10.1007/s11356-021-13652-9. Epub 2021 Apr 8.