Biodegradation of paraquat by Pseudomonas putida and Bacillus subtilis immobilized on ceramic with supplemented wastewater sludge

Jindakaraked, Manee; Khan, Eakalak; Kajitvichyanukul, Puangrat

doi:10.1016/j.envpol.2021.117307

Cited by 13 publications

(8 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All experiments were triplicated, and the minimum and maximum values were reported. In addition, the amount of immobilized cells on IC nc and leaching cells in the synthetic solution at the initial and final treatment time (24 h) of the experiment were determined by the plate count technique [ 41 ].

…”

Section: Methodsmentioning

confidence: 99%

“…For TDN analysis, the persulfate chemical wet oxidation method was used [ 45 ]. dissolved organic nitrogen (DON) was calculated as the difference between measured total dissolved nitrogen (TDN) and the sum of measured DIN species using Equation (7) [ 41 ]. The DON biodegradation degree through the cell−immobilized ceramics was determined as in Equation (8) [ 41 ].…”

Section: Methodsmentioning

confidence: 99%

“…dissolved organic nitrogen (DON) was calculated as the difference between measured total dissolved nitrogen (TDN) and the sum of measured DIN species using Equation (7) [ 41 ]. The DON biodegradation degree through the cell−immobilized ceramics was determined as in Equation (8) [ 41 ]. DON (mg L −1 as N ) = TDN − [( NH 3 − N ) + ( NO 3 − N ) + ( NO 2 − N )] DON t biodegradation degree (%) = [(( DON i − DON t ) − ( DON bi − DON bt ))/ DON i ] × 100% where DON i and DON t are DON before and after the paraquat treatment at time t , respectively.…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Biodegradation Capabilities of Paraquat-Degrading Bacteria Immobilized on Nanoceramics

Jindakaraked

Khan

Kajitvichyanukul

2023

Toxics

Self Cite

View full text Add to dashboard Cite

The biodegradation of paraquat was investigated using immobilized microbial cells on nanoceramics fabricated from nanoscale kaolinite. Pseudomonas putida and Bacillus subtilis, which degrade paraquat, were immobilized separately on nanoceramics (respectively called ICnc−P and ICnc−B). The attachment of bacteria to nanoceramics resulted from electrostatic force interactions, hydrogen bonding, and covalent bonding (between the cells and the support materials). The initial 10 mg L−1 concentration of paraquat in water was removed by the adsorption process using nanoceramics at 68% and ceramics at 52%, respectively. The immobilized cells on the nanoceramics were able to remove approximately 92% of the paraquat within 10 h, whereas the free cells could only remove 4%. When the paraquat was removed, the cell−immobilized nanoceramics exhibited a significant decrease in dissolved organic nitrogen (DON). ICnc−B was responsible for 34% of DON biodegradation, while ICnc−P was responsible for 22%. Ammonia was identified as the end product of ammonification resulting from paraquat mineralization.

show abstract

…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Biodegradation Capabilities of Paraquat-Degrading Bacteria Immobilized on Nanoceramics

Jindakaraked

Khan

Kajitvichyanukul

2023

Toxics

Self Cite

View full text Add to dashboard Cite

show abstract

“…This herbicide threatens both the environment [1,2] and health [3][4][5]. Biological [6,7], physical [8,9], and chemical treatments [10,11] have all been informed in the previous studies for PQ removal. Different effective adsorbents were elaborated for PQ removal such as activated carbon [12], bentonite [13], bio-based material [14][15][16], carbon nanotubes [17], calixarene [18], cellulose nanofiber [19], cyclodextrin [20,21], graphene oxide [22], kaolin [23], magnetic adsorbent [24,25], microorganisms [26], montmorillonite [27], pillararene [28], and silica [29,30].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Cationic Contaminants by Cyclodextrin Nanosponges Cross-Linked with 1,2,3,4-Butanetetracarboxylic Acid and Poly(vinyl alcohol)

2022

View full text Add to dashboard Cite

Cationic organic pollutants (dyes and pesticides) are mainly hydrosoluble and easily contaminate water and create a serious problem for biotic and abiotic species. The elimination of these dangerous contaminants from water was accomplished by adsorption using cyclodextrin nanosponges. These nanosponges were elaborated by the cross-linking between 1,2,3,4-butanetetracarboxylic acid and β-cyclodextrin in the presence of poly (vinyl alcohol). Their physicochemical characteristics were characterized by gravimetry, acid-base titration, TGA, 13C NMR, ATR-FTIR, Raman, X-ray diffraction, and Stereomicroscopy. The BP5 nanosponges displayed 68.4% yield, 3.31 mmol/g COOH groups, 0.16 mmol/g β-CD content, 54.2% swelling, 97.0% PQ removal, 96.7% SO removal, and 98.3% MG removal for 25 mg/L of initial concentration. The pseudo-second-order model was suitable for kinetics using 180 min of contact time. Langmuir isotherm was suitable for isotherm with the maximum adsorption of 120.5, 92.6, and 64.9 mg/g for paraquat (PQ), safranin (SO), and malachite green (MG) adsorption, respectively. Finally, the reusability performance after five regeneration times reached 94.1%, 91.6%, and 94.6% for PQ, SO, and MG adsorption, respectively.

show abstract

“…The appearance of this dangerous herbicide causes different negative effects on the environment [ 3 , 4 ] and heath [ 5 , 6 , 7 , 8 , 9 , 10 , 11 ]. Physical [ 12 , 13 ], biological [ 14 , 15 ], and chemical treatments [ 16 , 17 , 18 , 19 , 20 , 21 , 22 ] have all been reported in the literature for PQ removal. An adsorption process has recently been investigated for PQ removal, which was applied for both organic and inorganic materials such as bio-based material [ 23 , 24 , 25 ], bentonite [ 26 , 27 ], microorganisms [ 28 ], activated carbon [ 29 , 30 ], kaolin [ 31 ], pillararene [ 32 , 33 ], calixarene [ 34 , 35 , 36 ], graphene oxide [ 37 ], carbon nanotubes [ 38 , 39 ], silica [ 40 , 41 ], magnetic adsorbent [ 42 , 43 ], montmorillonite [ 44 , 45 ], cellulose nanofiber [ 46 , 47 ], and cyclodextrin [ 48 ].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Paraquat by Poly(Vinyl Alcohol)-Cyclodextrin Nanosponges

2021

View full text Add to dashboard Cite

The contamination of hydrosoluble pesticides in water could generate a serious problem for biotic and abiotic components. The removal of a hazardous agrochemical (paraquat) from water was achieved by adsorption processes using poly(vinyl alcohol)-cyclodextrin nanosponges, which were prepared with various formulations via the crosslinking between citric acid and β-cyclodextrin in the presence of poly(vinyl alcohol). The physicochemical properties of nanosponges were also characterized by different techniques, such as gravimetry, thermogravimetry, microscopy (SEM and Stereo), spectroscopy (UV-visible, NMR, ATR-FTIR, and Raman), acid-base titration, BET surface area analysis, X-ray diffraction, and ion exchange capacity. The C10D-P2 nanosponges displayed 60.2% yield, 3.14 mmol/g COOH groups, 0.335 mmol/g β-CD content, 96.4% swelling, 94.5% paraquat removal, 0.1766 m2 g−1 specific surface area, and 5.2 × 10−4 cm3 g−1 pore volume. The presence of particular peaks referring to specific functional groups on spectroscopic spectra confirmed the successful polycondensation on the reticulated nanosponges. The pseudo second-order model (with R2 = 0.9998) and Langmuir isotherm (with R2 = 0.9979) was suitable for kinetics and isotherm using 180 min of contact time and a pH of 6.5. The maximum adsorption capacity was calculated at 112.2 mg/g. Finally, the recyclability of these nanosponges was 90.3% of paraquat removal after five regeneration times.

show abstract

Biodegradation of paraquat by Pseudomonas putida and Bacillus subtilis immobilized on ceramic with supplemented wastewater sludge

Cited by 13 publications

References 53 publications

Biodegradation Capabilities of Paraquat-Degrading Bacteria Immobilized on Nanoceramics

Biodegradation Capabilities of Paraquat-Degrading Bacteria Immobilized on Nanoceramics

Adsorption of Cationic Contaminants by Cyclodextrin Nanosponges Cross-Linked with 1,2,3,4-Butanetetracarboxylic Acid and Poly(vinyl alcohol)

Adsorption of Paraquat by Poly(Vinyl Alcohol)-Cyclodextrin Nanosponges

Contact Info

Product

Resources

About