Heterogeneous Catalysts from Food Waste for Biodiesel Synthesis—A Comprehensive Review
Abstract
1. Introduction
2. Food Industry Waste—A Resource for a Heterogeneous Catalyst for Biodiesel Synthesis
2.1. Preparation of Eggshells for Triglyceride Transesterification
2.2. Preparation of Animal Bones for Triglyceride Transesterification
2.3. Efficiency of Eggshells in the Triglyceride Transesterification Process
2.4. Efficiency of Animal Bones in the Transesterification of Triglycerides
2.5. Regeneration and Multiple Reuse Possibilities of Catalysts Derived from Eggshells
2.6. Regeneration and Multiple Reuse Possibilities of Catalysts Derived from Animal Bones
2.7. Comparison of Preparation Conditions and Efficiency of Catalysts Obtained from Eggshell and Animal Bones
3. Conclusions
4. Future Prospects
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Origin of Shells | Preparation | CaO Content (%) | Surface Area (m2/g) and Basic Strength (H_) | Reference |
---|---|---|---|---|
Waste egg | Calcined at 800 °C for 4 h. | 99 | [10] | |
Chicken | Calcined at 800 °C for 4 h. | 99.2 | [12] | |
Waste egg | Calcined at 900 °C for 2.5 h. | 3.7262 m2/g 9.8 < H_ < 12.2 | [13] | |
Calcined at 900 °C for 2.5 h, refluxed in water at 60 °C for 6 h, and filtered at 120 °C overnight. The solid product was calcined at 600 °C for 3 h. | 8.6401 m2/g 12.2 < H_ < 15.0 | |||
Eggshell | Calcined at 900 °C for 2 h. | 97.1 | [14] | |
Chicken | The cleaned eggshells were dried overnight in an oven at 100 °C and calcined at 1000 °C for 4 h. | Surface area 54.6 m2/g | [15] | |
Eggshell | Calcined at 900 °C for 3 h. | Surface area 1.8 m2/g | [16] | |
Chicken | Calcined at 900 °C for 3 h | 99.20 | [17] | |
Chicken | Cleaned eggshells were dried at 100 °C for 24 h and reduced to a mesh size of 120. Calcined at 900 °C for 3 h. | 97.86 | [18] | |
Chicken | Dried at 100 °C for 24 h and ground into a powder form. Calcined at 850 °C for 2 h. | 98.21 | [19] | |
Chicken | Calcined for 4 h at 900 °C. | 2.98 ± 0.01 m2/g 7.2 < H_ < 9.8 | [20] | |
Calcined at 900 °C for 4 h. CaO was dissolved in distilled water. Zinc nitrate aqueous solution was added and stirred for 4 h, filtered, and dried at 120 °C for 4 h. Calcined again at 900 °C in a muffle furnace for 4 h. | 13.73 ± 0.01 m2/g 15.0 < H_ < 17.2 | |||
Calcined for 4 h at 900 °C for 4 h. CaO was dissolved in distilled water. Copper nitrate aqueous solution was added and stirred for 4 h, then filtered at 120 °C for 4 h. Calcined again at 900 °C for 4 h. | 11.92 ± 0.01 m2/g 12.2 < H_ < 15 | |||
Waste egg | Washed by distilled water and then dried at 60 °C. Washed with hot distilled water at 120 °C for 24 h. The finely crushed powder was calcined at 900 °C for 3 h. | 64.51 m2/g with pore size 9.28 nm | [21] | |
Guinea fowl | Calcined at 1000 °C for 4 h. | 98.500 ± 0.31 | [11] | |
Chicken | 98.010 ± 0.22 | |||
Chicken | Calcined at 850 °C for 5 h. | 89.01 ± 0.79% | [22] | |
Zn-CaO | Calcined for 5 h at 900 °C and impregnated with ZnNO3. | 13.51 ± 0.01 m2/g | [23] | |
Waste eggshells and ferric sulphate | Calcined at 800 °C for 3 h and impregnated with ferric sulphate at a ratio of 1:1. | Ca (20.7%), Fe (18.5%), S (4.5%), and O (54.8%) | [24] |
Calcinations Temperature (°C) | Surface Area (m2/g) | Total Pore Volume (cm3/g) | Crystallite Size (nm) |
---|---|---|---|
800 | 4.0173 | 0.016895 | 57.24773 |
900 | 90.6523 | 0.050995 | 41.47434 |
1000 | 1.2008 | 0.002773 | 95.0028 |
Eggshell Origin | Oil | Temperature (°C) | Shell Loading (wt%) | Reaction Duration (h) | Alcohol to Oil Molar Ratio (mol/mol) | Ester Yield, (Ester Content *) (wt%) | Reference |
---|---|---|---|---|---|---|---|
Chicken | Soybean | 65 | 3 | 3 | 9:1 | 95 | [29] |
Chicken | Palm olein | 60 | 10 | 2 | 12:1 | >90 | [12] |
Waste eggs | Palm olein | 15 | 4 min with 900 W microwave power | 18:1 | 96.7 | [10] | |
Waste eggs | Waste frying | 65 | 5 | 1 | 12:1 | 79.62 | [13] |
Chicken | 60 | 3 | 4 | 6:1 | 97.75 ± 0.02 | [14] | |
Chicken | Waste cooking | 65 | 1.5 | 2 | 12:1 | 94 | [15] |
Chicken | Soybean | 25 | 5.8 | 11 | 6:1 | 98 | [16] |
97 | |||||||
Chicken | Sunflower | 60 | 2 | 2 | 10.5:1 | 99 | [17] |
Chicken | Soybean | 57.5 | 7 | 3 | 10:1 | 92.32 | [18] |
Waste | Rapeseed | 60 | 4 | 1 | 9:1 | 95.12 | [30] |
Chicken | Sunflower | 60 | 3 | 3 | 9:1 | 96 | [19] |
Chicken | Waste cooking | 65 | 5 | 2 | 20:1 | 45.52 | [31] |
Waste | Chlorella pyrenoidosa | 60 | 2.06 | 3 | 30:1 methanol to algal biomass | 93.44 | [21] |
Waste | Waste cooking | 50 | 5 | 2 | 6:1 | 20.1 | [32] |
Guinea fowl | Calabash | 64 | 1.5 | 2 | 12:1 | 96 | [11] |
Chicken | 95 | ||||||
Chicken | Chicken fat | 65 | 2 | 3.41 | 30:1 | 90.2 | [33] |
Waste | Waste cooking | 60 | 2.5 | 2 | 12:1 | 94 | [34] |
92 (Methanol—ethanol (8:4) | |||||||
Chicken | Rapeseed | 64 | 6.8 | 9.48 | 10.93:1 | 97.79 | [35] |
Chicken | Rapeseed | 110 | 7.41 | 11.81 | 11,3:1 | 98.78 (1-butanol) | [22] |
Chicken | Marine fish waste | 57 | 5 | 1.78 (107 min) | 25:1 | 86.5 | [36] |
CaO Chicken | Eucalyptus | 65 | 5 | 2.5 | 6:1 | 70.0 | [20] |
CaO-CuO | 91.6 | ||||||
CaO-ZnO | 93.8 | ||||||
Waste | Rubber seed | 55 | 5 | 1.5 | 12:1 | 80.2 | [37] |
Zn-CaO from eggshells | 2 | 94.12 | |||||
Zn-CaO. from eggshells | Waste palm | 150 | 7 | 3 | 12:1 | 94.5 | [23] |
Bifunctional catalyst from waste eggshells CaSO4/Fe2O3 | Waste cooking | 70 | 4 | 45 min (0.75 h) | 5:1 | 89.94 | [24] |
Catalyst Origin | Fat/Oil | Calcination Temperature (°C) | Catalyst Amount (wt%) | Molar Ratio of Methanol to Oil (mol/mol) | Duration (h) | Temperature (°C) | Methyl Ester Yield (%) | Reference |
---|---|---|---|---|---|---|---|---|
Chicken bone | Waste cooking oil | 900 | 5 | 15:1 | 4 | 89.33 | [28] | |
Chicken bone | Waste cooking oil | 800 | 3 | 3:1 | 3 | 80 | 96 | [38] |
Fish bone | Palm oil | 900 | 4 | 12:1 | 6.11 | 65 | 94.3 | [39] |
Fish bone | Palm oil | 900 | 10 | 18:1 | 2 | 65 | 90 | [40] |
Pork bone | Jatropha Curcas oil | 900 | 4 | 18:1 | 5 min. microwave (800 W) | 94 | [41] | |
Cow bone | Waste cooking oil | 800 | 20 | 12:1 | 8 | 70 | 96 | [42] |
Acech cow bone | Castor oil | 900 | 6 | 12:1 | 4 | 65 | 58.7 | [43] |
Sheep bone | Palm oil | 800 | 20 | 18:1 | 65 | 96.78 | [44] | |
Waste animal bone | Peanut oil | 900 | 20 | 18:1 | 4 | 60 | 94 | [26] |
A mixture of equal parts of chicken and fish bones | Used cooking oil | 1000 | 1.98 | 10:1 | 1.54 | 65 | 89.5 | [45] |
Quail waste beaks | Canola oil | 900 | 7 | 12:1 | 4 | 65 | 89.4 | [46] |
Quail waste beaks | Rapeseed oil | 900 | 7 | 12:1 | 4 | 65 | 91 | [46] |
Quail waste beaks | Waste cooking oil | 900 | 7 | 12:1 | 4 | 65 | 91.7 | [46] |
Waste ostrich bone | Waste cooking oil | 1000 | 5 | 15:1 | 4 | 60 | 90.56 | [47] |
Waste fish scale | Soybean oil | 900 | 1.01 | 6.27:1 | 5 | 65 | 97.73 | [27] |
Catalyst | Fat/Oil | Catalyst Amount (wt%) | Molar Ratio of Methanol to Oil (mol/mol) | Duration (h) | Temperature (°C) | Methyl Ester Yield (%) | Reference |
---|---|---|---|---|---|---|---|
Calcined animal bone modified with KOH (10%) | Jatropha curcas | 6 | 9:1 | 3 | 70 | 96.1 | [49] |
Calcined goat bone modified with KOH (6%) | Waste cooking oil | 6 | 9:1 | 5 | 65 | 84 | [50] |
Calcined animal bone hydrothermal treated at 200 °C | Honge oil | 2.5 | 12:1 | 2 | 65 | 96 | [48] |
Calcined sheep bone impregnated with ash powder | Mustard oil | 10 | 5:1 | 6 | 65 | 90.4 | [51] |
Calcined pig bone impregnated with K2CO3 | Palm oil | 8 | 9:1 | 1.5 | 65 | 96.4 | [52] |
Calcined pig bones impregnated with CaO-CeO2 | Palm oil | 11 | 9:1 | 3 | 65 | 84.4 | [53] |
Calcined chicken bone impregnated with Li/Zn | Waste canola oil | 4 | 18:1 | 3.5 | 60 | 98 | [54] |
Calcined fish bone supported with polyvinyl alcohol | Palm oil | 10 | 20:1 | 65 | 80.4 | [39] |
Catalyst | Preparation of the Catalyst for Reuse | Cycles | References |
---|---|---|---|
Calcined chicken eggshell | Separation from reaction mixture; calcination at 1000 °C. | 13 | [37] |
Calcined waste eggshell | Separation from the reaction mixture by centrifugation, without pretreatment or regeneration. | 5 | [10] |
Calcined waste eggshell (CaO-900-600) | Separation from the reaction mixture by filtration, washing with methanol, and calcination at 600 °C. | 6 | [13] |
Calcined chicken eggshell | Separation from the reaction mixture by centrifugation, washing with n-hexane, drying, and calcination at 700 °C. | 5 | [15] |
Calcined eggshell | Separation from the reaction mixture by centrifugation, without pretreatment or regeneration. | 9 (soybean oil) 4 (waste cooking oil) | [16] |
Calcined chicken eggshell | Separation from the reaction mixture by centrifugation, drying at 100 °C, and re-calcination at 900 °C for 3 h. | 4 | [17] |
Calcined chicken eggshell | Separation from the reaction mixture and re-calcination at 700 °C for 2 h. | 5 | [18] |
Calcined chicken eggshell | Separation from the reaction mixture and drying. | 8 | [19] |
Calcined waste shell | Separation from the reaction mixture by centrifugation, washing with hexane, and drying overnight in the oven. | 7 | [21] |
Zn-CaO from eggshells | Separation from the reaction mixture by filtration, washing with hexane, and calcination at 900 °C for 4 h. | 6 | [20] |
Calcined eggshell impregnated with ferric sulphate at a ratio of 1:1 | 4 | [24] | |
Zn-CaO from eggshells | Separation from the reaction mixture by filtration, washing with hexane, and calcination at 900 °C for 4 h. | 6 | [23] |
Catalyst | Regeneration | Reusability | Reference |
---|---|---|---|
Calcined chicken bone | Recovering, after each run, washing with n-hexane, and calcination at 400 °C for 2 h. | 4 cycles | [28] |
Calcined waste animal bones | Separation from the reaction mixture, washing with distilled water and acetone, and drying in an oven at 50 °C. | 5 cycles | [44] |
Calcined goat bones | Separation by centrifugation, washing with methanol, and drying. | 6 cycles | [26] |
Calcined Chicken and fish bones | Separation by centrifugation, washing with hexane, and treatment at 1000 °C. | 4 cycles | [45] |
Calcined quail waste head | Washing with pure ethanol and drying at 100 °C. | 5 cycles | [46] |
Calcined ostrich bones | Washing with ethanol and drying at 100 °C for 3 h. | 4 cycles | [47] |
Calcined fish scale | Without treatment. | 6 cycles | [27] |
Waste chicken bone | Without treatment. | 4 cycles | [38] |
Cow bone | Without treatment. | 10 cycles | [42] |
Calcined animal bone modified with KOH | Drying; washing with methanol. | 4 cycles | [49] |
Calcined animal bone hydrothermally treated at 200 °C | Recovering; washing with methanol. | 5 cycles | [48] |
Calcined sheep bone impregnated with ash powder | Recovering by centrifugation, washing with methanol, and drying at 110 °C. | 5 cycles | [51] |
Origin | Calcination Temperature | CaO Content (%) | Basic Strength (H_) | Surface Area (m2/g) | Biodiesel Yield (%) |
---|---|---|---|---|---|
Eggshell | 800 | <99 | >89.94 | ||
850 | 89–98.21 | 92.32–98.78 | |||
900 | 97.1–99.20 | 7.2 < H_ < 17.2 | 1.8–64.51 | 71.0–97.75 | |
1000 | 98.01–98.5 | 54.6 | >90 | ||
Animal bones | 800 | 4.0173 | 80–96.78 | ||
900 | 10 < H_ < 15 | 90.6523 | 58.7–97.73 | ||
1000 | 1.2008 | 89.5–97.73 |
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Makarevičienė, V.; Gaidė, I.; Sendžikienė, E. Heterogeneous Catalysts from Food Waste for Biodiesel Synthesis—A Comprehensive Review. Catalysts 2025, 15, 957. https://doi.org/10.3390/catal15100957
Makarevičienė V, Gaidė I, Sendžikienė E. Heterogeneous Catalysts from Food Waste for Biodiesel Synthesis—A Comprehensive Review. Catalysts. 2025; 15(10):957. https://doi.org/10.3390/catal15100957
Chicago/Turabian StyleMakarevičienė, Violeta, Ieva Gaidė, and Eglė Sendžikienė. 2025. "Heterogeneous Catalysts from Food Waste for Biodiesel Synthesis—A Comprehensive Review" Catalysts 15, no. 10: 957. https://doi.org/10.3390/catal15100957
APA StyleMakarevičienė, V., Gaidė, I., & Sendžikienė, E. (2025). Heterogeneous Catalysts from Food Waste for Biodiesel Synthesis—A Comprehensive Review. Catalysts, 15(10), 957. https://doi.org/10.3390/catal15100957