1. O. Oyebode, V. Gordon-Dseagu, A. Walker, J.S. Mindell, Fruit and vegetable consumption and all-cause, cancer and CVD mortality: analysis of health survey for England data, J. Epidemiol Community Health, 68 (2014) 856–862.
  2. Y.P. Tang, B.L.L. Linda, L.W. Franz, Proximate analysis of Artocarpus odoratissimus (Tarap) in Brunei Darussalam, Int. Food Res. J., 20 (2013) 409–415.
  3. N. Priyantha, L.B.L. Lim, N.H.M. Mansor, A.B. Liyandeniya, Irreversible sorption of Pb(II) from aqueous solution on breadfruit peel to mitigate environmental pollution problems, Water Sci. Technol., 80 (2019) 2241–2249.
  4. Z.M. Yunus, N. Othman, A. Al-Gheethi, R. Hamdan, N.N. Ruslan, Adsorption of heavy metals from mining effluents using honeydew peels activated carbon; isotherm, kinetic and colum studies, J. Dispersion Sci. Technol., (2020) 1–15. https://
  5. L.B.L. Lim, N. Priyantha, M.H.F. Lai, R.M. Salleha, T. Zehra, Utilization of artocarpus hybrid (Nanchem) skin for the removal of Pb(II): equilibrium, thermodynamics, kinetics and regeneration studies, Int. Food Res. J., 22 (2015) 1043–1052.
  6. T.A. Khan, A.A. Mukhlif, E.A. Khan, Uptake of Cu2+ and Zn2+ from simulated wastewater using muskmelon peel biochar: isotherm and kinetic studies, Egypt. J. Basic Appl. Sci., 4 (2017) 236–248.
  7. L.B.L. Lim, N. Priyantha, X.H. Bong, N.A.H. Mohamad Zaidi, Enhancement of adsorption characteristics of methyl violet 2B dye through NaOH treatment of Cucumis melo var. cantalupensis (rock melon) skin, Desal. Water Treat., 18 (2020) 336–348.
  8. M.R.R. Kooh, M.K. Dahri, L.B.L. Lim, Jackfruit seed as lowcost adsorbent for removal of malachite green: artificial neural network and random forest approaches, Environ. Earth Sci., 77 (2018) 434,
  9. L.B.L. Lim, N. Priyantha, T. Zehra, C.W. Then, C.M. Chan, Adsorption of crystal violet dye from aqueous solution onto chemically treated Artocarpus odoratissimus skin: equilibrium, thermodynamics, and kinetics studies, Desal. Water Treat., 57 (2016) 10246–10260.
  10. T.A. Khan, M. Nazir, E.A. Khan, Adsorptive removal of rhodamine B from textile wastewater using water chestnut (Trapa natans L.) peel: adsorption dynamics and kinetic studies, Toxicol. Environ. Chem., 95 (2013) 919–931.
  11. T.A. Khan, R. Rahman, I. Ali, E.A. Khan, A.A. Mukhlif, Removal of malachite green from aqueous solution using waste pea shells as low-cost adsorbent – adsorption isotherms and dynamics, Toxicol. Environ. Chem., 96 (2014) 569–578.
  12. E.A. Khan, Shahjahan, T.A. Khan, Adsorption of methyl red on activated carbon derived from custard apple (Annona squamosa) fruit shell: equilibrium isotherm and kinetic studies, J. Mol. Liq., 249 (2018) 1195–1211.
  13. T.A. Khan, R. Rahman, E.A. Khan, Decolorization of bismarck brown R and crystal violet in liquid phase using modified pea peels: non-linear isotherm and kinetics modeling, Model. Earth Syst. Environ., 2 (2016) 141.
  14. W.-S. Choo, W.K. Yong, Antioxidant properties of two species of Hylocereus fruits, Adv. Appl. Sci. Res., 2 (2011) 418–425.
  15. V.M. Dembitsky, S. Poovarodom, H. Leontowicz, M. Leontowicz, S. Vearasilp, S. Trakhtenberg, S. Gorinstein, The multiple nutrition properties of some exotic fruits: biological activity and active metabolites, Food Res. Int., 44 (2011) 1671–1701.
  16. S. Priatni, A. Pradita, Stability study of betacyanin extract from red dragon fruit (Hylocereus polyrhizus) peels, Procedia Chem., 16 (2015) 438–444.
  17. S. Wichienchot, M. Jatupornpipat, R.A. Rastall, Oligosaccharides of pitaya (Dragon fruit) flesh and their prebiotic properties, Food Chem., 120 (2010) 850–857.
  18. B. Jamilah, Shu, M. Kharidah, M.A. Dzulkifly, A. Noranizan, Physico-chemical characteristics of red pitaya (Hylocereus polyrhizus) peel, Int. Food Res. J., 18 (2011) 279–286.
  19. H.Y. Leong, C.W. Ooi, C.L. Law, A.L. Julkifle, G.-T. Pan, P.L. Show, Investigation of betacyanins stability from peel and flesh of red-purple pitaya with food additives supplementation and pH treatments, LWT, 98 (2018) 546–558.
  20. R. Vijayakumar, S.S. Abd Gani, N.F. Mohd Mokhtar, Antielastase, anti-collagenase and antimicrobial activities of the underutilized red pitaya peel: an in vitro study for anti-aging applications, Asian J. Pharm. Clin. Res., 10 (2017) 251.
  21. N.A.S. Hernawati, R. Shintawaati, D. Priyandoko, The role of red dragon fruit pee (Hylocereous polyrhizus) to improvement blood lipid levels of hyperlipidaemia male mice, J. Phys. Conf. Ser., 1013 (2018) 012167.
  22. N. Priyantha, L.B.L. Lim, M.K. Dahri, D.T.B. Tennakoon, Dragon fruit skin as a potential low-cost biosorbent for the removal of manganese(II) ions, J. Appl. Sci. Environ. Sanit., 8 (2013) 179–188.
  23. A.M. Tanasal, N. La Nafie, P. Taba, Biosorption of Cd(II) ion by dragon fruit peel (Hylocereus polyrhizus), J. Akta Kim. Indonesian (Indonesia Chim. Acta)., 8 (2015) 18–30.
  24. R. Mallampati, L. Xuanjun, A. Adin, S. Valiyaveettil, Fruit peels as efficient renewable adsorbents for removal of dissolved heavy metals and dyes from water, ACS Sustainable Chem. Eng., 3 (2015) 1117–1124.
  25. N. Priyantha, L.B.L. Lim, M.K. Dahri, Dragon fruit skin as a potential biosorbent for the removal of Methylene blue dye from aqueous solution, Int. Food Res. J., 22 (2015) 2141–2148.
  26. A.H. Jawad, A.M. Kadhum, Y.S. Ngoh, Applicability of dragon fruit (Hylocereus polyrhizus) peels as low-cost biosorbent for adsorption of Methylene blue from aqueous solution: kinetics, equilibrium and thermodynamics studies, Desal. Water Treat., 109 (2018) 231–240.
  27. D.P. Steensma, Historical perspective Congo red out of Africa?, Arch. Pathol. Lab. Med., 125 (2001) 250–252.
  28. E.I. Yakupova, L.G. Bobyleva, I.M. Vikhlyantsev, A.G. Bobylev, Congo red and amyloids: history and relationship, Biosci. Rep., 39 (2019) 1–22.
  29. O. Bashir, M.N. Khan, T.A. Khan, Z. Khan, S.A. Al-Thabaiti, Influence of stabilizing agents on the microstructure of co-nanoparticles for removal of Congo red, Environ. Technol. Innovation, 8 (2017) 327–342.
  30. M.N. Khan, O. Bashir, T.A. Khan, S.A. Al-Thabaiti, Z. Khan, Catalytic activity of cobalt nanoparticles for dye and 4-nitro phenol degradation: a kinetic and mechanistic study, Int. J. Chem. Kinet., 49 (2017) 438–454.
  31. O. Hörstensmeyer, Tödlicher Zwischenfall nach intravenöser Injektion von Kongorot, DMW – Dtsch. Medizinische Wochenschrift, 89 (1964) 1845–1848.
  32. C. Schilliger-Musset, Inclusion of Substances of Very High Concern in the Candidate List for Eventual Inclusion in Annex XIV, Decision of the European Chemicals Agency, ECHA European Chemicals Agency, ED/121/2013, 2013, pp. 1–5.
  33. X.-Y. You, J.-G. Chen, Y.-N. Hu, Studies on the relation between bladder cancer and benzidine or its derived dyes in Shanghai, Br. J. Ind. Med., 47 (1990) 544–552.
  34. L.E. Gray, J.S. Ostby, The effects of prenatal administration of azo dyes on testicular development in the mouse: a structure activity profile of dyes derived from benzidine, dimethylbenzidine, or dimethoxybenzidine, Toxicol. Sci., 20 (1993) 177–183.
  35. V.R.N. Nethi, Biosorption and optimization studies on Congo red dye with fanwort powder using box behnken design, Int. Res. J. Eng. Technol., 5 (2018) 728–738.
  36. R. De, H. Lee, B. Das, Exploring the interactions in binary mixtures of polyelectrolytes: influence of mixture composition, concentration, and temperature on counterion condensation, J. Mol. Liq., 251 (2018) 94–99.
  37. S.A. Moon, B.K. Salunke, P. Saha, A.R. Deshmukh, B.S. Kim, Comparison of dye degradation potential of biosynthesized copper oxide, manganese dioxide, and silver nanoparticles using kalopanax pictus plant extract, Korean J. Chem. Eng., 35 (2018) 702–708.
  38. A. Bartošová, L. Blinová, M. Sirotiak, A. Michalíková, Usage of FTIR-ATR as non-destructive analysis of selected toxic dyes, Sciendo, 25 (2017) 103–111.
  39. L.B.L. Lim, N. Priyantha, S.A. Abdul Latip, Y.C. Lu, A.H. Mahadi, Converting Hylocereus undatus (white dragon fruit) peel waste into a useful potential adsorbent for the removal of toxic Congo red dye, Desal. Water Treat., 185 (2020) 307–317.
  40. M. Bergaoui, A. Nakhli, Y. Benguerba, M. Khalfaoui, A. Erto, F.E. Soetaredjo, S. Ismadji, B. Ernst, Novel insights into the adsorption mechanism of Methylene blue onto organobentonite: adsorption isotherms modeling and molecular simulation, J. Mol. Liq., 272 (2018) 697–707.
  41. Y.C. Lu, N. Priyantha, L.B.L. Lim, Ipomoea aquatica roots as environmentally friendly and green adsorbent for efficient removal of Auramine O dye, Surf. Interfaces, 20 (2020) 100543.
  42. A.A. Romzi, L.B.L. Lim, C.M. Chan, N. Priyantha, Application of Dimocarpus longan ssp. malesianus leaves in the sequestration of toxic brilliant green dye, Desal. Water Treat., 189 (2020) 428–439.
  43. M.K. Dahri, L.B.L. Lim, C.C. Mei, Cempedak durian as a potential biosorbent for the removal of brilliant green dye from aqueous solution: equilibrium, thermodynamics and kinetics studies, Environ. Monit. Assess., 187 (2015) 546, https://doi. org/10.1007/s10661-015-4768-z.
  44. G.L. Dotto, L.A.A. Pinto, M.A. Hachicha, S. Knani, New physicochemical interpretations for the adsorption of food dyes on chitosan films using statistical physics treatment, Food Chem., 171 (2015) 1–7.
  45. L. Sellaoui, H. Guedidi, S. Knani, L. Reinert, L. Duclaux, A.B. Lamine, Application of statistical physics formalism to the modeling of adsorption isotherms of ibuprofen on activated carbon, Fluid Phase Equilib., 387 (2015) 103–110.
  46. I. Langmuir, The adsorption of gases on plane surfaces of glass, mica and platinum, J. Am. Chem. Soc., 40 (1918) 1361–1403.
  47. H. Freundlich, Over the adsorption in the solution, J. Phys. Chem., 57 (1906) 385–470.
  48. M.J. Temkin, V. Pyzhev, Kinetics of ammonia synthesis on promoted iron catalysts, Acta Physiochim., 12 (1940) 217.
  49. O. Redlich, D.L. Peterson, A useful adsorption isotherm, J. Phys. Chem., 63 (1959) 1024.
  50. R. Sips, On the structure of a catalyst surface, J. Chem. Phys., 16 (1948) 490–495.
  51. K.V. Kumar, Comparative analysis of linear and non-linear method of estimating the sorption isotherm parameters for malachite green onto activated carbon, J. Hazard. Mater., 136 (2006) 197–202.
  52. H. Akaike, A new look at the statistical model identification, IEEE Tans. Autom. Control., 19 (1974) 716–723.
  53. H.R. Ghaffari, H. Pasalari, A. Tajvar, K. Dindarloo, B. BakGoudarzi, V. Alipour, A. Ghanbarneajd, Linear and nonlinear two-parameter adsorption isotherm modeling: a case-study, Int. J. Eng. Sci., 6 (2017) 1–11.
  54. M. Yadav, N.K. Singh, Isotherm investigation for the sorption of fluoride onto Bio-F: comparison of linear and non-linear regression method, Appl. Water Sci., 7 (2017) 4793–4800.
  55. A. Abbas, S. Murtaza, M. Munir, T. Zahid, N. Abbas, A. Mushtaq, Removal of Congo red from aqueous solutions with Raphanus sativus peels and activated carbon: a comparative study, American-Eurasian J. Agri. Envir. Sci., 10 (2011) 802–809.
  56. S. Reddy, Removal of direct dye from aqueous solutions with an adsorbent made from tamarind fruit shell, an agricultural solid waste, J. Sci. Ind. Res., 65 (2006) 443–446.
  57. A. Bhatnagar, E. Kumar, A.K. Minocha, B.H. Jeon, H. Song, Y.C. Seo, Removal of anionic dyes from water using Citrus limonum (Lemon) peel: equilibrium studies and kinetic modeling, Sep. Sci. Technol., 44 (2009) 316–334.
  58. C. Namasivayam, N. Muniasamy, K. Gayatri, M. Rani, K. Ranganathan, Removal of dyes from aqueous solutions by cellulosic waste orange peel, Bioresour. Technol., 57 (1996) 37–43.
  59. Sumanjit, S. Rani, R.K. Mahajan, Kinetic and equilibrium studies of adsorption of dye Congo red from aqueous solutions on bagasse charcoal and banana peels, J. Surf. Sci. Technol., 28 (2012) 133–147.
  60. N.K. Mondal, S. Kar, Potentiality of banana peel for removal of Congo red dye from aqueous solution: isotherm, kinetics and thermodynamics studies, Appl. Water Sci., 8 (2018) 157.
  61. S.L. Chan, Y.P. Tan, A.H. Abdullah, S.T. Ong, Equilibrium, kinetic and thermodynamic studies of a new potential biosorbent for the removal of basic blue 3 and Congo red dyes: pineapple (Ananas comosus) plant stem, J. Taiwan Inst. Chem. Eng., 61 (2016) 306–315.
  62. M.B. Sani, Comparative isotherms studies on adsorptive removal of Congo red from wastewater by watermelon rinds and neem-tree leaves, Open J. Phys. Chem., 4 (2014) 139–146.
  63. P. Singh, P. Raizada, D. Pathania, G. Sharma, P. Sharma, Microwave induced KOH activation of guava peel carbon as an adsorbent for Congo red dye removal from aqueous phase, Indian J. Chem. Technol., 20 (2013) 305–311.
  64. M. Jayarajan, R. Arunachala, G. Annadurai, Use of low cost nano-porous materials of pomelo fruit peel wastes in removal of textile dye, Res. J. Environ. Sci., 5 (2011) 434–443.
  65. M. Ghaedi, H. Tavallali, M. Sharifi, S.N. Kokhdan, A. Asghari, Preparation of low cost activated carbon from Myrtus communis and pomegranate and their efficient application for removal of Congo red from aqueous solution, Spectrochim. Acta, Part A, 86 (2012) 107–114.
  66. M. Abbas, M. Trari, Kinetic, equilibrium and thermodynamic study on the removal of Congo red from aqueous solutions by adsorption onto apricot stone, Process Saf. Environ. Prot., 98 (2015) 424–436.
  67. W.C. Wanyonyi, J.M. Onyari, P.M. Shiundu, Adsorption of Congo red dye from aqueous solutions using roots of Eichhornia crassipes: kinetic and equilibrium studies, Energy Procedia, 50 (2014) 862–869.
  68. V. Vimonses, S. Lei, B. Jin, C.W.K. Chow, C. Saint, Kinetic study and equilibrium isotherm analysis of Congo red adsorption by clay materials, Chem. Eng. J., 148 (2009) 354–364.
  69. T. Zehra, N. Priyantha, L.B.L. Lim, E. Iqbal, Sorption characteristics of peat of Brunei Darussalam V: removal of Congo red dye from aqueous solution by peat, Desal. Water Treat., 54 (2015) 2592–2600.
  70. A. Tor, Y. Cengeloglu, Removal of Congo red from aqueous solution by adsorption onto acid activated red mud., J. Hazard. Mater., 138 (2006) 409–415.
  71. M.C.S. Reddy, L. Sivaramakrishna, A.V. Reddy, The use of an agricultural waste material, jujuba seeds for the removal of anionic dye (Congo red) from aqueous medium, J. Hazard. Mater., 203–204 (2012) 118–127.
  72. Z. Hu, H. Chen, F. Ji, S. Yuan, Removal of Congo red from aqueous solution by cattail root, J. Hazard. Mater., 173 (2010) 292–297.
  73. S. Dawood, T.K. Sen, Removal of anionic dye Congo red from aqueous solution by raw pine and acid-treated pine cone powder as adsorbent: equilibrium, thermodynamic, kinetics, mechanism and process design, Water Res., 46 (2012) 1933–1946.
  74. V.S. Mane, P.V. Vijay Babu, Kinetic and equilibrium studies on the removal of Congo red from aqueous solution using eucalyptus wood (Eucalyptus globulus) saw dust, J. Taiwan Inst. Chem. Eng., 44 (2013) 81–88.
  75. D. Pathania, A. Sharma, Z.M. Siddiqi, Removal of Congo red dye from aqueous system using Phoenix dactylifera seeds, J. Mol. Liq., 219 (2016) 359–367.
  76. Z. Zhang, L. Moghaddam, I.M. O’Hara, W.O.S. Doherty, Congo red adsorption by ball-milled sugarcane bagasse, Chem. Eng. J., 178 (2011) 122–128.
  77. H. Shayesteh, A. Rahbar-Kelishami, R. Norouzbeigi, Evaluation of natural and cationic surfactant modified pumice for Congo red removal in batch mode: kinetic, equilibrium, and thermodynamic studies, J. Mol. Liq., 221 (2016) 1–11.
  78. P.D. Saha, S. Chowdhury, M. Mondal, K. Sinha, Biosorption of direct red 28 (Congo red) from aqueous solutions by eggshells: batch and column studies, Sep. Sci. Technol., 47 (2012) 112–123.
  79. S. Parvin, B.K. Biswas, M.A. Rahman, M.H. Rahman, M.S. Anik, M.R. Uddin, Study on adsorption of Congo red onto chemically modified egg shell membrane, Chemosphere, 236 (2019) 124326.
  80. S. Mohebali, D. Bastani, H. Shayesteh, Equilibrium, kinetic and thermodynamic studies of a low-cost biosorbent for the removal of Congo red dye: acid and CTAB-acid modified celery (Apium graveolens), J. Mol. Struct., 1176 (2019) 181–193.
  81. S. Liu, Y. Ding, P. Li, K. Diao, X. Tan, F. Lei, Y. Zhan, Q. Li, B. Huang, Z. Huang, Adsorption of the anionic dye Congo red from aqueous solution onto natural zeolites modified with N,N-dimethyl dehydroabietylamine oxide, Chem. Eng. J., 248 (2014) 135–144.
  82. T.V. Pham, T.V. Tran, T.D. Nguyen, N.T.H. Tham, P.T.T. Quang, D.T.T. Uyen, N.T.H. Le, D.-V.N. Vo, N.T. Thanh, L.G. Bach, Adsorption behavior of Congo red dye from aqueous solutions onto exfoliated graphite as an adsorbent: kinetic and isotherm studies, Mater. today:. Proc., 18 (2019) 4449–4457.
  83. T.A. Khan, S. Sharma, E.A. Khan, A.A. Mukhlif, Removal of Congo red and basic violet 1 by chir pine (Pinus roxburghii) sawdust, a saw mill waste: batch and column studies, Toxicol. Environ. Chem., 96 (2014) 555–568.
  84. K. Litefti, M.S. Freire, M. Stitou, J. González-Álvarez, Adsorption of an anionic dye (Congo red) from aqueous solutions by pine bark, Sci. Rep., 9 (2019) 16530.
  85. S. Lagergren, About the theory of so-called adsorption of soluble substances, K. Sven. Vetenskapsakad. Handl., 24 (1898) 1–39.
  86. Y.S. Ho, G. McKay, Sorption of dye from aqueous solution by peat, Chem. Eng. J., 70 (1998) 115–124.