Su Sümbülü ve Saz Bitkilerinden Üretilen Biyokömür ve Aktif Karbonun Verimi ile Yüzey Alanı Üzerinde Sıcaklığın Etkisinin İncelenmesi

Öz

Bu çalışma, saz ve su sümbülü bitkilerinden elde edilen biyokömür ve aktif karbon üretimi üzerinde piroliz sıcaklıklarının etkisini incelemiştir. Araştırma kapsamında, potasyum hidroksit (KOH) ile yapılan kimyasal aktivasyon ve piroliz süreçlerinin kütle verimi, yüzey alanı ve gözenek yapısı üzerindeki etkileri değerlendirilmiştir. Piroliz, oksijensiz ortamda ve azot gazı altında 10 °C/dak ısıtma hızı ve 90 dakikalık bekletme süresiyle 500, 550 ve 650 °C’de gerçekleştirilmiştir. Artan sıcaklık, uçucu bileşen kaybının hızlanması nedeniyle her iki bitkide biyokömür veriminde düşüşe yol açmıştır. Su sümbülü 550 °C’de %25,8 (CHN550) ile en yüksek verimi gösterirken, 650 °C’de verim %22,6’ya gerilemiştir. Saz ise 500 °C’de %24,4 (CHS500) verim sağlamış ve 650 °C’de bu değer %21’e düşmüştür. Aktif karbon üretiminde en yüksek verim, 550 °C’de %23,6 ile saz örneğinde (ACS550) elde edilmiş; 650 °C’de %17,6’ya inmiştir. Su sümbülünde 650 °C’de en düşük verim (ACN650) %14,6 olarak kaydedilmiştir. Yüzey özellikleri ise sıcaklıkla belirgin biçimde iyileşmiş; özellikle aktive örneklerde BET yüzey alanı ve mikrogözeneklilik artmıştır. Saz (ACS650) örneği 196,69 m²/g yüzey alanına ulaşırken, su sümbülü (ACN650) aynı sıcaklıkta 252,95 m²/g ile daha yüksek bir değer göstermiştir.

Anahtar Kelimeler

• Su Sümbülü
• Saz Bitkisi
• Aktif Karbon
• Biyokömür

Investigation of the Efficiency of Biochar and Activated Carbon Produced from Water Hyacinth and Phragmites Australis Plants

Öz

This study examined how varying pyrolysis temperatures influence the formation of biochar and activated carbon derived from Phragmites australis and Eichhornia crassipes. The work assessed changes in mass yield, surface area, and pore development resulting from thermal decomposition and chemical activation using potassium hydroxide (KOH). Pyrolysis was conducted under strictly oxygen-free conditions using nitrogen gas at 500, 550, and 650 °C, with a heating rate of 10 °C/min and a residence time of 90 minutes. Biochar yield for both feedstocks declined progressively at higher temperatures because of intensified volatilization and structural mass loss. Water hyacinth produced its maximum yield at 550 °C(CHN550), reaching 25.8%, whereas the value decreased to 22.6% at 650 °C. P. australis exhibited a yield of 24.4% at 500 °C(CHS500), falling to 21% at 650 °C. For activated carbon, the highest output was recorded for P. australis at 550 °C(ACS550), at 23.6%, dropping to 17.6% at 650 °C. Water hyacinth showed the lowest yield at 650 °C(ACN650), at 14.6%. In contrast, surface characteristics improved markedly at elevated temperatures. BET results showed increased surface area and enhanced microporosity, especially after activation. The (ACS650) sample reached 196.69 m²/g, while (ACN650) achieved an even greater surface area of 252.95 m²/g.

Anahtar Kelimeler

• Water Hyacinth
• Phragmites Australis
• Activated Carbon
• Biochar

Kaynakça

1. Abdulrazzak, D. I. A. (2017). The effects of Eichhornia crassipes on the water resources. The International Journal of Engineering and Science, 06(04), 51–55. https://doi.org/10.9790/1813-0604025155
2. Adesina, B. T., Okikiola, B. T., Elemile, O. O., Joseph, A., Dada, O. A., Obayomi, K. S., & Ajayi, O. E. (2021). Preparation and characterization of biochar and activated carbon derived from cashew bagasse waste. In ECS meeting abstracts (No. 60, p. 1770â). The Electrochemical Society. https://doi.org/10.1149/MA2021-02601770mtgabs
3. Ahmed, M. J. (2016). Application of agricultural based activated carbons by microwave and conventional activations for basic dye adsorption: Review. Journal of Environmental Chemical Engineering, 4(1), 89–99. https://doi.org/10.1016/j.jece.2015.10.027
4. Ahmed, M. J., & Theydan, S. K. (2012). Physical and chemical characteristics of activated carbon prepared by pyrolysis of chemically treated date stones and its ability to adsorb organics. Powder Technology, 229, 237–245. https://doi.org/10.1016/j.powtec.2012.06.043
5. Altenor, S., Carene, B., Emmanuel, E., Lambert, J., Ehrhardt, J. J., & Gaspard, S. (2009). Adsorption studies of methylene blue and phenol onto vetiver roots activated carbon prepared by chemical activation. Journal of Hazardous Materials, 165(1-3), 1029-1039.‏ https://doi.org/10.1016/j.jhazmat.2008.10.133
6. Azargohar, R., & Dalai, A. K. (2006). Biochar as a precursor of activated carbon. Applied Biochemistry and Biotechnology, 131(1–3), 762–773. https://doi.org/10.1385/ABAB:131:1:762
7. Azargohar, R., & Dalai, A. K. (2008). Steam and KOH activation of biochar: Experimental and modeling studies. Microporous and Mesoporous Materials, 110(2–3), 413–421. https://doi.org/10.1016/j.micromeso.2007.06.047
8. Basta, A. H., Fierro, V., El-Saied, H., & Celzard, A. (2009). 2-Steps KOH activation of rice straw: An efficient method for preparing high-performance activated carbons. Bioresource Technology, 100(17), 3941–3947. https://doi.org/10.1016/j.biortech.2009.02.028

9. Carneiro, M. T., Morais, A. Í. S., de Carvalho Melo, A. L. F., Ferreira, F. J. L., Santos, F. E. P., Viana, B. C., Osajima, J. A., Bezerra, R. D. S., Del Mar Orta Cuevas, M., Peña-Garcia, R. R., Almeida, L. C., & Silva-Filho, E. C. (2023). Biochar derived from water hyacinth biomass chemically activated for dye removal in aqueous solution. Sustainability, 15(19), Article 14578. https://doi.org/10.3390/su151914578
10. Cazetta, A. L., Vargas, A. M. M., Nogami, E. M., Kunita, M. H., Guilherme, M. R., Martins, A. C., Silva, T. L., Moraes, J. C. G., & Almeida, V. C. (2011). NaOH-activated carbon of high surface area produced from coconut shell: Kinetics and equilibrium studies from the methylene blue adsorption. Chemical Engineering Journal, 174(1), 117–125. https://doi.org/10.1016/j.cej.2011.08.058
11. Chambers, R. M., Meyerson, L. A., & Saltonstall, K. (1999). Expansion of Phragmites australis into tidal wetlands of north america. aquatic botany, 64(3–4), 261–273. https://doi.org/10.1016/S0304-3770(99)00055-8
12. Chen, G., Bai, J., Yu, L., Wang, W., Wang, Y., Qiu, J., & Cui, B. (2024). Phragmites australis straw and biochar additives regulate soil organic carbon fractions in a degraded coastal salt marsh. Ecological Engineering, 206, Article 107328. https://doi.org/10.1016/j.ecoleng.2024.107328
13. Colomba, A., Berruti, F., & Briens, C. (2022). Model for the physical activation of biochar to activated carbon. Journal of Analytical and Applied Pyrolysis, 168, Article 105769. https://doi.org/10.1016/j.jaap.2022.105769
14. Danish, M., Hashim, R., Ibrahim, M. N. M., Rafatullah, M., & Sulaiman, O. (2012). Surface characterization and comparative adsorption properties of Cr(VI) on pyrolysed adsorbents of acacia mangium wood and phoenix dactylifera L. stone carbon. Journal of Analytical and Applied Pyrolysis, 97, 19–28. https://doi.org/10.1016/j.jaap.2012.06.001
15. Elmouwahidi, A., Bailón-García, E., Pérez-Cadenas, A. F., Maldonado-Hódar, F. J., & Carrasco-Marín, F. (2017). Activated carbons from KOH and H3PO4 -activation of olive residues and its application as supercapacitor electrodes. Electrochimica Acta, 229, 219–228. https://doi.org/10.1016/j.electacta.2017.01.152
16. Gale, M., Nguyen, T., Moreno, M., & Gilliard-AbdulAziz, K. L. (2021). Physiochemical properties of biochar and activated carbon from biomass residue: ınfluence of process conditions to adsorbent properties. ACS Omega, 6(15), 10224–10233. https://doi.org/10.1021/acsomega.1c00530
17. Gaurav, G. K., Mehmood, T., Cheng, L., Klemeš, J. J., & Shrivastava, D. K. (2020). Water hyacinth as a biomass: A review. Journal of Cleaner Production, 277, Article 122214. https://doi.org/10.1016/j.jclepro.2020.122214
18. Gong, Y.-P., Ni, Z.-Y., Xiong, Z.-Z., Cheng, L.-H., & Xu, X.-H. (2017). Phosphate and ammonium adsorption of the modified biochar based on Phragmites australis after phytoremediation. Environmental Science and Pollution Research, 24(9), 8326–8335. https://doi.org/10.1007/s11356-017-8499-2
19. Hadey, C., Allouch, M., Alami, M., Boukhlifi, F., & Loulidi, I. (2022). Preparation and characterization of biochars obtained from biomasses for combustible briquette applications. The Scientific World Journal, 2022(1), 1–13. https://doi.org/10.1155/2022/2554475
20. Hagemann, N., Spokas, K., Schmidt, H.-P., Kägi, R., Böhler, M., & Bucheli, T. (2018). Activated carbon, biochar and charcoal: linkages and synergies across pyrogenic carbon’s ABCs. Water, 10(2), Article 182. https://doi.org/10.3390/w10020182
21. Harimisa, G. E., Jusoh, N. W. C., Tan, L. S., Shameli, K., Ghafar, N. A., & Masudi, A. (2022). Synthesis of potassium hydroxide-treated activated carbon via one-step activation method. Journal of Physics: Conference Series, 2259(1), Article 012009. https://doi.org/10.1088/1742-6596/2259/1/012009
22. Al-Kinani, H. A., & Mana, H. A. (2025). Ecological and chemical study of Eichhornia crassipes plant growing in water of Shatt Al-Ksar in Thi-Qar-southern Iraq. University of Thi-Qar Journal of agricultural research, 14(1), 721-730. https://doi.org/10.54174/52jmm948
23. Huang, Y., Li, S., Chen, J., Zhang, X., & Chen, Y. (2014). Adsorption of Pb(II) on mesoporous activated carbons fabricated from water hyacinth using H3PO4 activation: Adsorption capacity, kinetic and isotherm studies. Applied Surface Science, 293, 160–168. https://doi.org/10.1016/j.apsusc.2013.12.123
24. Hui, T. S., & Zaini, M. A. A. (2015). Potassium hydroxide activation of activated carbon: a commentary. Carbon Letters, 16(4), 275–280. https://doi.org/10.5714/CL.2015.16.4.275
25. Hung, C.-M., Huang, C.-P., Hsieh, S.-L., Chen, Y.-T., Chen, C.-W., & Dong, C.-D. (2023). Water hyacinth derived biochar for polycyclic aromatic hydrocarbons removal and oxidative stress study. Environmental Technology & Innovation, 29, Article 103027. https://doi.org/10.1016/j.eti.2023.103027
26. Jeirani, Z., Niu, C. H., & Soltan, J. (2017). Adsorption of emerging pollutants on activated carbon. Reviews in Chemical Engineering, 33(5), 491–522. https://doi.org/10.1515/revce-2016-0027
27. Jiang, L., Chen, Y., Wang, Y., Lv, J., Dai, P., Zhang, J., Huang, Y., & Lv, W. (2022). Contributions of various Cd(II) adsorption mechanisms by phragmites australis -activated carbon modified with mannitol. ACS Omega, 7(12), 10502–10515. https://doi.org/10.1021/acsomega.2c00014
28. Kassa, Y., Amare, A., Nega, T., Alem, T., Gedefaw, M., Chala, B., Freyer, B., Waldmann, B., Fentie, T., Mulu, T., Adgo, T., Ayalew, G., Adugna, M., & Tibebe, D. (2025). Water hyacinth conversion to biochar for soil nutrient enhancement in improving agricultural product. Scientific Reports, 15(1), Article 1820. https://doi.org/10.1038/s41598-024-84729-x
29. Khalil, H. P. S., Jawaid, M., Firoozian, P., Rashid, U., Islam, A., & Akil, H. M. (2013). Activated carbon from various agricultural wastes by chemical activation with KOH: preparation and characterization. Journal of Biobased Materials and Bioenergy, 7(6), 708–714.
30. Li, Z., Deng, H., Yang, L., Zhang, G., Li, Y., & Ren, Y. (2018). Influence of potassium hydroxide activation on characteristics and environmental risk of heavy metals in chars derived from municipal sewage sludge. Bioresource Technology, 256, 216–223. https://doi.org/10.1016/j.biortech.2018.02.013
31. Liao, Z., Huang, Z., Hu, H., Zhang, Y., & Tan, Y. (2011). Microscopic structure and properties changes of cassava stillage residue pretreated by mechanical activation. Bioresource Technology, 102(17), 7953–7958. https://doi.org/10.1016/j.biortech.2011.05.067
32. Liu, P., Yue, M., & Zhang, H. (2016). Adsorptive performance of Ni(II) from aqueous solutions using biochar made of Phragmites australis by adding ammonium polyphosphate as flame retardant. Journal of Chemistry, 2016(1), Article 1797396. https://doi.org/10.1155/2016/1797396
33. Ma, Y. (2017). Comparison of activated carbons prepared from wheat straw via ZnCl2 and KOH activation. Waste and Biomass Valorization, 8(3), 549–559. https://doi.org/10.1007/s12649-016-9640-z
34. Madej, J., Hilber, I., Bucheli, T. D., & Oleszczuk, P. (2016). Biochars with low polycyclic aromatic hydrocarbon concentrations achievable by pyrolysis under high carrier gas flows irrespective of oxygen content or feedstock. Journal of Analytical and Applied Pyrolysis, 122, 365–369. https://doi.org/10.1016/j.jaap.2016.09.005
35. Masto, R. E., Kumar, S., Rout, T. K., Sarkar, P., George, J., & Ram, L. C. (2013). Biochar from water hyacinth (Eichornia crassipes) and its impact on soil biological activity. CATENA, 111, 64–71. https://doi.org/10.1016/j.catena.2013.06.025
36. Mortada, W. I., Ghaith, M. M., Khedr, N. E., Ellethy, M. I., Mohsen, A. W., & Shafik, A. L. (2024). Mesoporous magnetic biochar derived from common reed (Phragmites australis) for rapid and efficient removal of methylene blue from aqueous media. Environmental Science and Pollution Research, 31(29), 42330–42341. https://doi.org/10.1007/s11356-024-33860-3
37. Najmudeen, T. M., Arakkal Febna, M. A., Rojith, G., & Zacharia, P. U. (2019). Characterisation of biochar from Water Hyacinth Eichhornia crassipes and the effects of biochar on the growth of fish and paddy in ıntegrated culture systems. Journal of Coastal Research, 86(sp1), Article 225. https://doi.org/10.2112/SI86-033.1
38. Narayanan, M., Kandasamy, G., Kandasamy, S., Natarajan, D., Devarayan, K., Alsehli, M., Elfasakhany, A., & Pugazhendhi, A. (2021). Water hyacinth biochar and aspergillus niger biomass amalgamation potential in removal of pollutants from polluted lake water. Journal of Environmental Chemical Engineering, 9(4), Article 105574. https://doi.org/10.1016/j.jece.2021.105574
39. Novotny, E. H., Maia, C. M. B. de F., Carvalho, M. T. de M., & Madari, B. E. (2015). Bıochar: Pyrogenıc carbon for agrıculturaL USE - A crıtıcal revıew. Revista Brasileira de Ciência Do Solo, 39(2), 321–344. https://doi.org/10.1590/01000683rbcs20140818
40. Nwajiaku, I. M., Olanrewaju, J. S., Sato, K., Tokunari, T., Kitano, S., & Masunaga, T. (2018). Change in nutrient composition of biochar from rice husk and sugarcane bagasse at varying pyrolytic temperatures. International Journal of Recycling of Organic Waste in Agriculture, 7(4), 269–276. https://doi.org/10.1007/s40093-018-0213-y
41. Okman, I., Karagöz, S., Tay, T., & Erdem, M. (2014). Activated carbons from grape seeds by chemical activation with potassium carbonate and potassium hydroxide. Applied Surface Science, 293, 138–142. https://doi.org/10.1016/j.apsusc.2013.12.117
42. Orero, B., Ntuli, F., Zvinowanda, C., Sithole, T., & Mashifana, T. (2025). Sustainable synthesis of activated carbon from water hyacinth via one-step carbonization-H3PO4 activation: Optimization and modeling via RSM-artificial intelligence approach. Next Materials, 9, Article 101140. https://doi.org/10.1016/j.nxmate.2025.101140
43. Ouyang, J., Zhou, L., Liu, Z., Heng, J. Y., & Chen, W. (2020). Biomass-derived activated carbons for the removal of pharmaceutical mircopollutants from wastewater: A review. Separation and Purification Technology, 253, Article 117536.‏ https://doi.org/10.1016/j.seppur.2020.117536
44. Patnukao, P., & Pavasant, P. (2008). Activated carbon from Eucalyptus camaldulensis Dehn bark using phosphoric acid activation. Bioresource Technology, 99(17), 8540–8543. https://doi.org/10.1016/j.biortech.2006.10.049
45. De Araújo, T. P., Quesada, H. B., Bergamasco, R., Vareschini, D. T., & De Barros, M. A. S. D. (2020). Activated hydrochar produced from brewer's spent grain and its application in the removal of acetaminophen. Bioresource Technology, 310, Article 123399. https://doi.org/10.1016/j.biortech.2020.123399
46. Reddy, K. S. K., Al Shoaibi, A., & Srinivasakannan, C. (2012). A comparison of microstructure and adsorption characteristics of activated carbons by CO2 and H3PO4 activation from date palm pits. New Carbon Materials, 27(5), 344–351. https://doi.org/10.1016/S1872-5805(12)60020-1
47. Rezania, S., Ponraj, M., Talaiekhozani, A., Mohamad, S. E., Md Din, M. F., Taib, S. M., Sabbagh, F., & Sairan, F. M. (2015). Perspectives of phytoremediation using water hyacinth for removal of heavy metals, organic and inorganic pollutants in wastewater. Journal of Environmental Management, 163, 125–133. https://doi.org/10.1016/j.jenvman.2015.08.018
48. Riyanto, C. A., & Prabalaras, E. (2019). The adsorption kinetics and isoterm of activated carbon from Water hyacinth leaves (Eichhornia crassipes) on Co(II). Journal of Physics: Conference Series, 1307(1), Article 012002. https://doi.org/10.1088/1742-6596/1307/1/012002
49. Rolletschek, H., Rolletschek, A., Kühl, H., & Kohl, J.-G. (1999). Clone specific differences in a Phragmites australis stand. Aquatic Botany, 64(3–4), 247–260. https://doi.org/10.1016/S0304-3770(99)00054-6
50. Saad, M. J., Sajab, M. S., Wan Busu, W. N., Misran, S., Zakaria, S., Chin, S. X., & Chia, C. H. (2020). Comparative adsorption mechanism of rice straw activated carbon activated with NaOH and KOH. Sains Malaysiana, 49(11), 2721–2734. https://doi.org/10.17576/jsm-2020-4911-11
51. Salman, S. D., Rasheed, I. M., & Mohammed, A. K. (2021). Adsorption of heavy metal ions using activated carbon derived from Eichhornia (water hyacinth). IOP Conference Series: Earth and Environmental Science, 779(1), Article 12074. https://doi.org/10.1088/1755-1315/779/1/012074
52. Saltonstall, K. (2002). Cryptic invasion by a non-native genotype of the common reed, Phragmites australis , into north america. Proceedings of the National Academy of Sciences, 99(4), 2445–2449. https://doi.org/10.1073/pnas.032477999
53. Sharifirad M, Koohyar F, Rahmanpour SH, & Vahidifar M. (2012). Preparation of activated carbon from Phragmites Australis: Equilibrium Behaviour Study. Research Journal of Recent Sciences, 1(8), 10–16. https://www.isca.me/rjrs/archive/v1/i8/2.ISCA-RJRS-2012-167.pdf
54. Shengli, S., Junping, L., Qi, L., Fangru, N., Jia, F., & Shulian, X. (2018). Optimized preparation of Phragmites australis activated carbon using the box-behnken method and desirability function to remove hydroquinone. Ecotoxicology and Environmental Safety, 165, 411–422. https://doi.org/10.1016/j.ecoenv.2018.09.038
55. Tarapitakcheevin, P., Weerayutsil, P., & Khuanmar, K. (2013). Adsorption of acid dye on activated carbon prepared from Water Hyacinth by sodium chloride activation. GMSARN International Journal, 7(1), 83-90. https://gmsarnjournal.com/home/wp-content/uploads/2015/08/vol7no3-1.pdf
56. Thompson, K. A., Shimabuku, K. K., Kearns, J. P., Knappe, D. R. U., Summers, R. S., & Cook, S. M. (2016). Environmental Comparison of biochar and activated carbon for tertiary wastewater treatment. Environmental Science & Technology, 50(20), 11253–11262. https://doi.org/10.1021/acs.est.6b03239
57. Toft, J. D., Simenstad, C. A., Cordell, J. R., & Grimaldo, L. F. (2003). The effects of introduced water hyacinth on habitat structure, invertebrate assemblages, and fish diets. Estuaries, 26(3), 746–758. https://doi.org/10.1007/BF02711985
58. Tseng, R., & TSENG, S. (2006). Characterization and use of high surface area activated carbons prepared from cane pith for liquid-phase adsorption. Journal of Hazardous Materials, 136(3), 671–680. https://doi.org/10.1016/j.jhazmat.2005.12.048
59. Ullah, S., Shah, S. S. A., Altaf, M., Hossain, I., El Sayed, M. E., Kallel, M., El-Bahy, Z. M., Rehman, A. ur, Najam, T., & Nazir, M. A. (2024). Activated carbon derived from biomass for wastewater treatment: Synthesis, application and future challenges. Journal of Analytical and Applied Pyrolysis, 179, Article 106480. https://doi.org/10.1016/j.jaap.2024.106480
60. Wang, W., Bai, J., Lu, Q., Zhang, G., Wang, D., Jia, J., Guan, Y., & Yu, L. (2021). Pyrolysis temperature and feedstock alter the functional groups and carbon sequestration potential of Phragmites australis ‐ and Spartina alterniflora ‐derived biochars. GCB Bioenergy, 13(3), 493–506. https://doi.org/10.1111/gcbb.12795
61. Williams, N. E., Oba, O. A., & Aydinlik, N. P. (2022). Modification, production, and methods of KOH‐activated carbon. ChemBioEng Reviews, 9(2), 164–189. https://doi.org/10.1002/cben.202100030
62. Xiao, H., Lin, Q., Li, G., Zhao, X., Li, J., & Li, E. (2022). Comparison of biochar properties from 5 kinds of halophyte produced by slow pyrolysis at 500 °C. Biochar, 4(1), Article 12. https://doi.org/10.1007/s42773-022-00141-6
63. Xu, Z., Xing, Y., Ren, A., Ma, D., Li, Y., & Hu, S. (2020). Study on adsorption properties of water hyacinth-derived biochar for uranium (VI). Journal of Radioanalytical and Nuclear Chemistry, 324(3), 1317–1327. https://doi.org/10.1007/s10967-020-07160-2
64. Zhang, C., Shao, Y., Zhang, L., Zhang, S., Westerhof, R. J. M., Liu, Q., Jia, P., Li, Q., Wang, Y., & Hu, X. (2020a). Impacts of temperature on evolution of char structure during pyrolysis of lignin. Science of The Total Environment, 699, Article 134381. https://doi.org/10.1016/j.scitotenv.2019.134381
65. Zhang, C., Zhang, Z., Zhang, L., Li, Q., Li, C., Chen, G., Zhang, S., Liu, Q., & Hu, X. (2020b). Evolution of the functionalities and structures of biochar in pyrolysis of poplar in a wide temperature range. Bioresource Technology, 304, Article 123002. https://doi.org/10.1016/j.biortech.2020.123002
66. Zhang, Y.-Y., Zhang, D., & Barrett, S. C. H. (2010). Genetic uniformity characterizes the invasive spread of water hyacinth ( Eichhornia crassipes ), a clonal aquatic plant. Molecular Ecology, 19(9), 1774–1786. https://doi.org/10.1111/j.1365-294X.2010.04609.x
67. Zhao, C., Yin, W., Xu, J., Zhang, Y., Shang, D., Guo, Z., Wang, Q., Wang, J., & Kong, Q. (2020). Removal of tetracycline from water using activated carbon derived from the mixture of Phragmites australis and waterworks sludge. ACS Omega, 5(26), 16045–16052. https://doi.org/10.1021/acsomega.0c01524