TY - JOUR
T1 - Potential of Lemna minor for removal of methylene blue in aqueous solution
T2 - Kinetics, adsorption mechanism, and degradation pathway
AU - Imron, Muhammad Fauzul
AU - Ananta, Alifia Rizki
AU - Ramadhani, Izzati Saumi
AU - Kurniawan, Setyo Budi
AU - Abdullah, Siti Rozaimah Sheikh
N1 - Funding Information:
This research was funded and supported by Lembaga Penelitian dan Pengabdian pada Masyarakat (LPPM) Universitas Airlangga through international research collaboration (grant no. 786/UN3.15/PT/2021 ) and Universiti Kebangsaan Malaysia ( DIP-2021-002 ) research grant.
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/11
Y1 - 2021/11
N2 - Dye wastewater produced from textile industry effluent contains non-biodegradable complex chemical compounds that harmful to living organism. Thus, treating dye wastewater before releasing it into surface water is extremely important. Lemna minor is one of ideal aquatic plants that can be used as phytoremediator of various pollutants. The objective of this research is to determine the potential and mechanism of Lemna minor to remove methylene blue (MB). This research was conducted in batch reactor. The effect of plant weight (1, 2, 3 g), contact time (0–4 days), and initial concentration (25, 50, 75 mg/L), as well as reaction kinetics and adsorption isotherms of MB removal were also determined. Results showed that equilibrium plant weight, contact time, and concentration were achieved at 2 g of plant weight for 2 days with 82.48 ± 1.09% of removal efficiency in 50 mg/L of MB concentration. For kinetics, all initial plant weights and concentration were well fitted with pseudo-second-order model, while the adsorption isotherm is Freundlich isotherm models with qmax of 1.14 mg/g. Based on those, the adsorption process of MB by L. minor was determined as chemisorption. Our results also found that the removal mechanisms of MB by L. minor are phytosorption (hydrogen bonding and electrostatic interaction) and biodegradation (desulfurization and denitrification). Our findings showed that the removal processes of MB by L. minor were influenced by plant weight, initial concentration, and contact time. Therefore, it can be concluded that L. minor can be used as a phytoremediation agent to remove pollutants.
AB - Dye wastewater produced from textile industry effluent contains non-biodegradable complex chemical compounds that harmful to living organism. Thus, treating dye wastewater before releasing it into surface water is extremely important. Lemna minor is one of ideal aquatic plants that can be used as phytoremediator of various pollutants. The objective of this research is to determine the potential and mechanism of Lemna minor to remove methylene blue (MB). This research was conducted in batch reactor. The effect of plant weight (1, 2, 3 g), contact time (0–4 days), and initial concentration (25, 50, 75 mg/L), as well as reaction kinetics and adsorption isotherms of MB removal were also determined. Results showed that equilibrium plant weight, contact time, and concentration were achieved at 2 g of plant weight for 2 days with 82.48 ± 1.09% of removal efficiency in 50 mg/L of MB concentration. For kinetics, all initial plant weights and concentration were well fitted with pseudo-second-order model, while the adsorption isotherm is Freundlich isotherm models with qmax of 1.14 mg/g. Based on those, the adsorption process of MB by L. minor was determined as chemisorption. Our results also found that the removal mechanisms of MB by L. minor are phytosorption (hydrogen bonding and electrostatic interaction) and biodegradation (desulfurization and denitrification). Our findings showed that the removal processes of MB by L. minor were influenced by plant weight, initial concentration, and contact time. Therefore, it can be concluded that L. minor can be used as a phytoremediation agent to remove pollutants.
KW - Advanced wastewater treatment
KW - Industrial wastewater
KW - Phytoremediation
KW - Phytosorption
KW - Wastewater treatment
UR - http://www.scopus.com/inward/record.url?scp=85117911332&partnerID=8YFLogxK
U2 - 10.1016/j.eti.2021.101921
DO - 10.1016/j.eti.2021.101921
M3 - Article
AN - SCOPUS:85117911332
SN - 2352-1864
VL - 24
JO - Environmental Technology and Innovation
JF - Environmental Technology and Innovation
M1 - 101921
ER -