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Different water treatment technologies such as photochemical degradation, biodegradation, electrochemical degradation, reverse osmosis, and membrane separation have been used to get rid of water pollutants. Enzymatic treatments have received great attention due to several advantages compared to physical and chemical treatments, such as mild operating conditions and high catalytic efficiency without harsh side effects. Oxidase and peroxidase enzymes from different sources have been immobilized on metal and metal oxide-polymer composites and used in the degradation of pollutants.
Nanocomposite (NC) | Immobilization Method | Pollutants Removed | Degradation (%) | Degradation Time | Reusability | Ref. |
---|---|---|---|---|---|---|
TiO2/polyvinylidene fluoride (PVDF) | Crosslinking of TiO2/PVDF membrane using APTES and glutaraldehyde followed by immersion in laccase solution | Bisphenol A | 95 | 5 h | 91.7% (96 h of continuous use) | [46] |
TiO2/bacterial cellulose (BC) | Physical adsorption of TiO2 on BC followed by crosslinking with glutaraldehyde and immersion in laccase solution | Reactive red X-3B in presence of ABTS | 80 | 60 min | 70% and 57% (6 and 10 cycles, respectively) | [1] |
Calcium alginate | Physical entrapment of enzyme in nanocomposite | Fluoranthene in a fluidized bed reactor | 81.06 | 8 h | 66.845% (60 days of storage) | [27] |
Fe2O3/poly(ethylene glycol)/concovalin A | Chemical co-precipitation followed by crosslinking with glutaraldehyde and immersion in laccase solution | Sulfadiazine | 100 | 30 min | 82.8% (10 consecutive cycles) | [24] |
Sulfamethazine | ||||||
Sulfamethoxazole (all in presence of syringaldehyde mediator) |
||||||
MNPs/chitosan | Physical mixing of NPs and chitosan followed by crosslinking with glutaraldehyde and immersion in laccase solution | Reactive black 5 | 90 | 30 min | 47% (10 cycles) | [47] |
Evans blue | 60 | 30 min | ||||
Tryphan blue | 80 | 40 min | ||||
Direct blue 15 | 70 | 60 min | ||||
MNPs/polydopamine | Functionalized MNP-polydopamine NC with dialdehyde starch followed by immersion in laccase solution | 2,4-dichlorophenol | 72 | 3 h | 77% (8 cycles) | [48] |
91 | 12 h | |||||
Fe2O3/Cu-alginate | Physical entrapment of enzyme in nanocomposite | Triclosan | 89.6 | 8 h | 86.9% (3 cycles in acetate buffer) | [4] |
53.2 | 8 h (wastewater) | |||||
Remazol Brilliant Blue R (RBBR) | 75.8 | 8 h | ||||
55 | 25 h (wastewater) | |||||
35 | 25 h (waste water) | |||||
Cu (II)-chitosan-graft-poly (glycidyl methacrylate)/poly (ethylene imine) | Physical adsorption of laccase on nanocomposites | Phenol in presence of ABTS | 80 | 4 h | 50% (8 cycles) | [30] |
MNPs/chitosan | Crosslinking with glutaraldehyde followed by immersion in laccase solution | 2,4-Dichlorophenol | 91.4 | 12 h | 75.8% and 57.4% (2,4-DCP and 4-CP after 10 cycles) | [33] |
4-Chlorophenol | 75.5 | |||||
MNPs/SiO2/poly (glycidyl methacrylate)-S-SH | Physical adsorption of enzyme on the nanocomposite | Meloxicam | 92 | 48 h | 82.3%, 88.9%, and 87.5% (meloxicam, piroxicam and Cd2+, respectively, after 5 cycles) | [21] |
Piroxicam | 95 | |||||
Cd2+ | 94 | |||||
MNPs/Poly(p-Phenylenediamine) | Covalent immobilization using glutaraldehyde for crosslinking | Reactive blue 19 | 80 | 1 h | 43% (8 cycles) | [6] |
MNPs@MoS2/polyethyleneimine | Physical adsorption of laccase on nanocomposite | Malachite green | 82.7 | Overnight | 62% (10 cycles) | [25] |
Bisphenol A | 87.6 | |||||
Bisphenol F (all in presence of ABTS) |
70.6 | |||||
Cu-alginate | Physical entrapment of enzyme in nanocomposite | Fuschin blue | 65 (HOBT) | 4 h | 100% and 95% (120 h continuous use and 15 days storage, respectively) | [8] |
Congo red | 27 (ABTS) | |||||
Tryphan blue | 51(syringaldehyde) | |||||
Malachite green | 60 (ABTS) | |||||
Erichrome black T | 50 (HOBT) | |||||
Crystal violet (all in different mediators) |
32 (HOBT) | |||||
Textile effluent in a continuous flow packed bed bioreactor | 66 (colour) 90 (BOD) 98 (COD) |
|||||
MNPs/chitosan | Physical entrapment of enzyme in presence of ionic liquid and ABTS | 2,4-dichlorophenol | 100 | 4 h | 93.2% (for 2,4-DCP after 6 cycles) | [49] |
Bisphenol A | 100 | 72 h | ||||
Indole | 70.5 | 72 h | ||||
Anthracene | 93.3 | 72 h | ||||
MNPs/polyethylenimine | Crosslinking of NPs with PEI using glutaraldehyde followed by chelation of laccase with Cu(II) | Phenol in a fixed bed reactor | 72.93% at a flowrate of 25 μL/min | - | - | [34] |
MNPs/Cu2+-PEG | In situ oxidation of metal salt using PEG followed by physical adsorption of laccase | Malachite green | 100 (ABTS) | 120 min | 99.9, 90.1, 89.4, 94.6, 76.5, 80.1, 74.6, and 66.1% (respectively, for the dyes after 10 cycles) | [10] |
Brilliant green | 96.5 (ABTS) | |||||
Crystal violet | 95.2 (ABTS) | |||||
Azophloxine | 97.7 (TEMPO) | |||||
Red MX-5B | 86.6 (ABTS) | |||||
Methyl orange | 92.7 (VLA) | |||||
Reactive blue 19 | 96 (TEMPO) | |||||
Alizarin red | 83.7 (TEMPO) | |||||
TiO2/Zn-alginate | Physical entrapment of enzyme in nanocomposite | Alizarin red | 61 | 5 h | 100% (14 cycles) | [50] |
Tryphan blue | 96 | |||||
Malachite green | 100 | |||||
Indigo carmine | 100 | |||||
Ca-alginate | Physical entrapment with crosslinking of enzyme prior to entrapment | Bisphenol A | 99 | 2 h | 70% (10 successive cycles) | [19] |
Ca-alginate | Physical entrapment of enzyme in nanocomposite | Aniline purple | 86.1 | 24 h | - | [51] |
Ca-alginate | Physical entrapment of enzyme in nanocomposite | Reactive Red 180 | 67.2 | 11 days | - | [52] |
Reactive Blue 21 | 88.05 | |||||
Ca-alginate | Physical entrapment of enzyme in nanocomposite | Reactive T. Blue | 92 | 72 h | 22.3% (6 cycles) | [53] |
Ca-alginate | Physical entrapment of enzyme in nanocomposite | RBBR | 85 | 2 h | 52.1% and 70% (Bismarck brown and all the others, respectively) | [45] |
Reactive Black 5 | 80 | 24 h | ||||
Bismarck Brown R | 55 | 24 h | ||||
Lancet Grey G | 85 | 24 h | ||||
Cu-alginate | Physical entrapment of enzyme in nanocomposite | Acid dye | 38% | 24 h | - | [54] |
MNPs/chitosan | Crosslinking with glutaraldehyde followed by adsorption in laccase solution | Reactive yellow 2 | 85 | 10 h | - | [55] |
Reactive blue 4 | 60 | 12 h | ||||
MNPs/poly(GMA-MMA)/Cu-Poly(4-vinyl pyridine | Polymer grafting with Cu chelation followed by adsorption of enzyme | Reactive green 19 | 60 | 18 h | 63%, 76%, and 59% (green, red, and brown dyes, respectively) | [56] |
Reactive red 2 | 88 | |||||
Reactive brown 10 | 90 | |||||
Cu-alginate | Physical entrapment of enzyme in nanocomposite | phenol model solution containing tannic acid, gallic acid, ferulic acid, resorcinol, and pyrogallol | 75 | 6 h | 35% (8 cycles) | [57] |
FScubes/PDA@PVDF | Prepared the FS/PDA@PVDF membrane using solvothermal process followed by covalent immobilization of laccase using glutaraldehyde as cross linker | Congo red | 97.1 | 3 h | 85% and 76% (7 days and 5 cycles, respectively) | [58] |
Nanocomposite (NC) | Immobilization Method | Pollutants Removed | Degradation (%) | Degradation Time | Reusability | Ref. |
---|---|---|---|---|---|---|
TiO2/polydopamine | In situ polymerization of dopamine on TiO2NPs followed by covalent crosslinking of enzyme with glutaraldehyde | 2,4-dichlorophenol | 100 | 30 min | 100%, 90%, and 63.6% (15, 25, and 40 reuses, respectively) | [61] |
MNPs/poly(glycidylmethacrylate-co-methylmethacrylate) (poly(GMA-MMA)) | Crosslinking of enzyme and nanocomposite beads using glutaraldehyde | phenol | 86 | 2 h | 84% (8 weeks), 92%, and 79% (phenol and p-chlorophenol, respectively, after 48 h of continuous use) | [3] |
p-chlorophenol (in the presence of H2O2) |
59 | |||||
Fe2O3/poly (amido amine) (PAMAM)/silk fibroin | Crosslinking of enzyme with nanocomposites using glutaraldehyde | Bisphenol A in presence of H2O2 | 80 | 120 min | - | [62] |
Calcium alginate | Physical entrapment of enzyme in nanocomposite | Acid blue 113 | 76 | 240 min | Can be recycled up to 3 times | [7] |
Aluminosilicate halloysite nanotubes/chitosan | Crosslinking of enzyme with nanocomposites using glutaraldehyde | Phenol in presence of hydrogen peroxide | 98.8 | 30 min | 60% (4 cycles) | [63] |
MNPs/polyacrylonitrile | Crosslinking of enzyme with nanocomposites using glutaraldehyde | Phenol | 85.2 | - | 52% (5 cycles) | [29] |
MNPs/poly(vinyl alcohol)/poly(acrylic acid) | Physical adsorption of enzyme on nanocomposites | Estrone | 100 | 40 min | 56.2% (7 cycles) | [18] |
MNPs/polymethyl methacrylate | Physical entrapment of enzyme in nanocomposite | Phenol in presence of hydrogen peroxide | 55 | 50 min | - | [64] |
MNPs/poly(glycidylmethacrylate-co-methylmethacrylate) (poly(GMA-MMA)) | Crosslinking of enzyme with nanocomposite beads using glutaraldehyde | Phenol | 86 | 2 h | 91% and 79% (phenol and chlorophenol, respectively, after 48 h of continuous operation) | [3] |
p-Chlorophenol (in presence of hydrogen peroxide in a fluidized bed reactor) |
59 |
Nanocomposite (NC) | Enzyme | Immobilization Method | Pollutants Removed | Degradation (%) | Degradation Time | Reusability | Ref. |
---|---|---|---|---|---|---|---|
iO2/polydopamine | Chloroperoxidase (CPO) | Covalent crosslinking of enzyme with nanocomposites using glutaraldehyde | Aniline blue | 97.58 | 2 min | 90.3%, 78.2%, and 53.71% (10, 15, and 20 reuses, respectively) | [61] |
Crystal violet | 98.98 | 2 min | |||||
NiFe2O4/tannin | Glucose oxidase | Physical adsorption of enzyme on nanocomposite | Indigo carmine in presence of UV light | 98.6 | 90 min | 85.57% (5 cycles) | [31] |
MnFe2O4/calcium alginate | Glucose oxidase and Laccase |
Physical adsorption of enzymes on the nanocomposite | Methylene blue | 82.13 | 1 h | - | [9] |
Indigo | 25.09 | ||||||
Acid red 14 | 20.42 | ||||||
MNPs/PAMAM | Glycerophosphodiesterase (GpdQ) | Crosslinking of enzyme with nanocomposites using glutaraldehyde | Organophosphate pesticide | 44.5 | 120 days | Used as a filter in a Pasteur pipette between two layers of sand | [14] |
MNPs@SiO2/polydopamine | Lignin peroxidase | Physical adsorption of enzymes on the nanocomposite | Tetracycline | 100 | 24 h | 80.3% and 67.5% (7 and 14 days of storage), 70% and 30% (4 and 8 cycles, respectively) | [32] |
Dibutyl phthalate | 100 | 24 h | |||||
5-chlorophenol | 100 | 24 h | |||||
Phenol | 100 | 24 h | |||||
Phenanthrene | 79 | 24 h | |||||
Fluoranthene | 73 | 24 h | |||||
Benzo(a)pyrene | 65 | 24 h | |||||
MNPs/chitosan | Manganese peroxidase | Crosslinking of enzyme with nanocomposites using glutaraldehyde | Methylene blue | 96 | 50 min | 91.7% and 86.7% (5 cycles-methylene blue and reactive orange, respectively) | [2] |
Reactive orange 16 | 98 | ||||||
Fe2O3/chitosan | Saccharomyces cerevisiae enzyme | Adsorption of chitosan on the NPs surface followed by crosslinking with enzyme using glutaraldehyde | Cu(II) | 96.8 | 60 min | - | [65] |