References
  -  H.M. Al-Saidi, A.A. El-Bindary, A.Z. El-Sonbati, M.A. Abdel-
    Fadeel, Fluorescence enhancement of Rhodamine B as a tool
    for the determination of trace and ultra-trace concentrations
    of bismuth using dispersive liquid–liquid microextraction,
    RSC Adv., 6 (2016) 21210–21218. 
-  T.O. Ajiboye, O.A. Oyewo, D.C. Onwudiwe, Adsorption and
    photocatalytic removal of Rhodamine B from wastewater
    using carbon-based materials, FlatChem, 29 (2021) 100277,
    doi: 10.1016/j.flatc.2021.100277. 
-  V. Kumar, P. Saharan, A.K. Sharma, A. Umar, I. Kaushal,
    A. Mittal, Y. Al-Hadeethi, B. Rashad, Silver doped manganese
    oxide-carbon nanotube nanocomposite for enhanced dyesequestration:
    isotherm studies and RSM modelling approach,
    Ceram. Int., 46 (2020) 10309–10319. 
-  S. Shehu Imam, H. Funmilayo Babamale, A short review on
    the removal of Rhodamine B dye using agricultural wastebased
    adsorbents, Asian J. Chem. Sci., 7 (2020) 25–37. 
-  M. Tariq, M. Muhammad, J. Khan, A. Raziq, M.K. Uddin,
    A. Niaz, S.S. Ahmed, A. Rahim, Removal of Rhodamine B dye
    from aqueous solutions using photo-Fenton processes and
    novel Ni-Cu@MWCNTs photocatalyst, J. Mol. Liq., 312 (2020)
    113399, doi: 10.1016/j.molliq.2020.113399. 
-  C. Arora, P. Kumar, S. Soni, J. Mittal, A. Mittal, B. Singh, Efficient
    removal of malachite green dye from aqueous solution using
    Curcuma caesia based activated carbon, Desal. Water Treat.,
    195 (2020) 341–352. 
-  L.B.L. Lim, N. Priyantha, X.Y. Fang, N.A.H. Mohamad Zaidi,
    Artocarpusodoratissimus peel as a potential adsorbent in
    environmental remediation to remove toxic Rhodamine B dye,
    J. Mater. Environ. Sci., 8 (2017) 494–502. 
-  M. Benjelloun, Y. Miyah, G.A. Evrendilek, F. Zerrouq,
    S. Lairini, Recent advances in adsorption kinetic models: their
    application to dye types, Arabian J. Chem., 14 (2021) 103031,
    doi: 10.1016/j.arabjc.2021.103031. 
-  N. Bhadusha, T. Ananthabaskaran, Kinetic, thermodynamic
    and equilibrium studies on uptake of Rhodamine B onto
	  ZnCl2 activated low-cost carbon, E-J. Chem., 9 (2012) 873026,
  doi: 10.1155/2012/873026. 
-  Toronto Research Chemicals, Identification of the Substance/Mixture and of the Company/Undertaking, Toronto, 2019. 
-  M.R.R. Kooh, L.B.L. Lim, L.H. Lim, M. Khairud Dahri,
    Separation of toxic Rhodamine B from aqueous solution using
    an efficient low-cost material, Azolla pinnata, by adsorption
    method, Environ. Monit. Assess., 188 (2016) 108, doi: 10.1007/s10661-016-5108-7. 
-  L.M. Skjolding, L.vG. Jørgensen, K.S. Dyhr, C.J. Köppl,
    U.S. McKnight, P. Bauer-Gottwein, P. Mayer, P.L. Bjerg, A. Baun,
    Assessing the aquatic toxicity and environmental safety of
    tracer compounds Rhodamine B and Rhodamine WT, Water
  Res., 197 (2021) 117109, doi: 10.1016/j.watres.2021.117109. 
-  Y. Chao, J. Pang, Y. Bai, P. Wu, J. Luo, J. He, Y. Jin, X. Li, J.
    Xiong, H. Li, W. Zhu, Graphene-like BN@SiO2 nanocomposites
    as efficient sorbents for solid-phase extraction of Rhodamine
    B and Rhodamine 6G from food samples, Food Chem.,
  320 (2020) 126666, doi: 10.1016/j.foodchem.2020.126666. 
-  Q. Liu, Q. Xu, W. Sun, Facile preparation of core-shell
    magnetic organic covalent framework via self-polymerization
    of two-in-one strategy as a magnetic solid-phase extraction
    adsorbent for determination of Rhodamine B in food
    samples, J. Chromatogr. A, 1657 (2021) 462566, doi: 10.1016/j.chroma.2021.462566. 
-  A. Mittal, R. Jain, J. Mittal, S. Varshney, S. Sikarwar, Removal of
    Yellow ME 7 GL from industrial effluent using electrochemical
    and adsorption techniques, Int. J. Environ. Pollut., 43 (2010)
    308–323. 
-  Official Journal of the European Union, Commission Regulation
    (EU) No. 1129/2011 of 11 November 2011 Amending Annex II to
    Regulation (EC) No 1333/2008 of the European Parliament and
    of the Council by Establishing a Union List of Food Additives,
    2011. 
-  Official Journal of the European Union, Regulation (Ec) No
    1223/2009 of the European Parliament and the Council of 30
    November 2009 on Cosmetic Products, 2009. 
-  A. Tkaczyk, K. Mitrowska, A. Posyniak, Synthetic organic
    dyes as contaminants of the aquatic environment and their
    implications for ecosystems: a review, Sci. Total Environ.,
  717 (2020) 137222, doi: 10.1016/j.scitotenv.2020.137222. 
-  eCFR: 21 CFR Part 74 — Listing of Color Additives Subject
    to Certification. Available at https://www.ecfr.gov/current/title-21/chapter-I/subchapter-A/part-74 
-  E. Yilmaz, M. Soylak, A novel and simple deep eutectic solvent
    based liquid phase microextraction method for Rhodamine
    B in cosmetic products and water samples prior to its
    spectrophotometric determination, Spectrochim. Acta, Part A,
    202 (2018) 81–86. 
-  Y. Fang, D. Hariu, T. Yamamoto, S. Komarov, Acoustic cavitation
    assisted plasma for wastewater treatment: degradation of
    Rhodamine B in aqueous solution, Ultrason. Sonochem.,
    52 (2019) 318–325. 
-  X. Xiao, X.-L. Ma, Z.-Y. Liu, W.-W. Li, H. Yuan, X.-B. Ma,
    L.-X. Li, H.-Q. Yu, Degradation of Rhodamine B in a novel
    bio-photoelectric reductive system composed of Shewanella
  oneidensis MR-1 and Ag3PO4, Environ. Int., 126 (2019) 560–567. 
-  W. Xiao, X. Jiang, X. Liu, W. Zhou, Z.N. Garba, I. Lawan,
    L. Wang, Z. Yuan, Adsorption of organic dyes from wastewater
    by metal-doped porous carbon materials, J. Cleaner Prod.,
  284 (2021) 124773, doi: 10.1016/j.jclepro.2020.124773. 
-  R. Bushra, S. Mohamad, Y. Alias, Y. Jin, M. Ahmad, Current
    approaches and methodologies to explore the perceptive
    adsorption mechanism of dyes on low-cost agricultural waste:
    a review, Microporous Mesoporous Mater., 319 (2021) 111040,
    doi: 10.1016/j.micromeso.2021.111040. 
-  W. Xiao, Z.N. Garba, S. Sun, I. Lawan, L. Wang, M. Lin,
    Z. Yuan, Preparation and evaluation of an effective activated
    carbon from white sugar for the adsorption of Rhodamine
    B dye, J. Cleaner Prod., 253 (2020) 119989, doi: 10.1016/j.jclepro.2020.119989. 
-  Z.-L. Cheng, Y.-X. Li, Z. Liu, Novel adsorption materials based
    on graphene oxide/beta zeolite composite materials and their
    adsorption performance for Rhodamine B, J. Alloys Compd.,
    708 (2017) 255–263. 
-  X. Duan, R. Lv, Z. Kong, An anionic metal-organic framework
    for selective adsorption separation toward methylene blue and
    Rhodamine B, J. Inorg. General Chem., 646 (2020) 1408–1411. 
-  A.A. Oyekanmi, A. Ahmad, K. Hossain, M.I. Rafatullah,
    Adsorption of Rhodamine B dye from aqueous solution onto
    acid treated banana peel: response surface methodology,
    kinetics and isotherm studies, PLoS One, 14 (2019) e0216878,
    doi: 10.1371/journal.pone.0216878. 
-  X. Wei, D. Chen, L. Wang, Y. Ma, W. Yang, Carboxylate-functionalized
    hollow polymer particles modified polyurethane foam
    for facile and selective removal of cationic dye, Appl. Surf. Sci.,
  579 (2022) 152153, doi: 10.1016/j.apsusc.2021.152153. 
-  B. Wang, Q. Zhang, G. Xiong, F. Ding, Y. He, B. Ren, L. You,
    X. Fan, C. Hardacre, Y. Sun, Bakelite-type anionic microporous
    organic polymers with high capacity for selective adsorption
    of cationic dyes from water, Chem. Eng. J., 366 (2019) 404–414. 
-  H. Zhao, X.-K. Ouyang, L.-Y. Yang, Adsorption of lead ions
    from aqueous solutions by porous cellulose nanofiber–sodium
    alginate hydrogel beads, J. Mol. Liq., 324 (2021) 115122,
  doi: 10.1016/j.molliq.2020.115122. 
-  T. Khan, V. Acar, M. Raci Aydin, B. Hülagü, H. Akbulut,
    M. Özgür Seydibeyoğlu, A review on recent advances in
    sandwich structures based on polyurethane foam cores,
    Polym. Compos., 41 (2020) 2355–2400. 
-  M. El Bouraie, A. Abdelghany, Sorption features of polyurethane
    foam functionalized with salicylate for chlorpyrifos: equilibrium,
    kinetic models and thermodynamic studies, Polymers
  (Basel), 12 (2020) 2036, doi: 10.3390/polym12092036. 
-  M. El-Bouraie, Removal of the malachite green (MG) dye from
    textile industrial wastewater using the polyurethane foam
    functionalized with salicylate, J. Dispersion Sci. Technol.,
    36 (2015) 1228–1236. 
-  S.T. Moghaddam, M.R. Naimi-Jamal, A. Rohlwing, F.B. Hussein,
    N. Abu-Zahra, High removal capacity of arsenic from
    drinking water using modified magnetic polyurethane foam
    nanocomposites, J. Polym. Environ., 27 (2019) 1497–1504. 
-  F. Wu, K. Pickett, A. Panchal, M. Liu, Y. Lvov, Superhydrophobic
    polyurethane foam coated with polysiloxane-modified clay
    nanotubes for efficient and recyclable oil absorption, ACS Appl.
    Mater. Interfaces, 11 (2019) 25445−25456. 
-  H. Qin, K. Wang, Study on preparation and performance of
    PEG-based polyurethane foams modified by the chitosan with
    different molecular weight, Int. J. Biol. Macromol., 140 (2019)
    877–885. 
-  D. Yuan, T. Zhang, Q. Guo, F. Qiu, D. Yang, Z. Ou, A novel
    hierarchical hollow SiO2@MnO2 cubes reinforced elastic
    polyurethane foam for the highly efficient removal of oil from
  water, Chem. Eng. J., 327 (2017) 539–547. 
-  L. Ren, Z. Qiu, Z. Wang, D. Yang, D. Zhou, T. Zhang, Preparation
    of biomass carbon/polyurethane foams for selective oil/water
    absorption, J. Dispersion Sci. Technol., 41 (2020) 1872–1878. 
-  E.A. Moawed, M.A. El-Hagrasy, N.E.M. Embaby, Substitution
    influence of halo polyurethane foam on the removal of bismuth,
    cobalt, iron and molybdenum ions from environmental
    samples, J. Taiwan Inst. Chem. Eng., 70 (2017) 382–390. 
-  M.S. El-Shahawi, H. Alwael, A novel platform based on gold
    nanoparticles chemically impregnated polyurethane foam
    sorbent coupled ion chromatography for selective separation
    and trace determination of phosphate ions in water, Microchem.
    J., 149 (2019) 103987, doi: 10.1016/j.microc.2019.103987. 
-  M. Revenga-Parra, C. Gómez-Anquela, T. García-Mendiola,
    E. Gonzalez, F. Pariente, E. Lorenzo, Grafted Azure A modified
    electrodes as disposable β-nicotinamide adenine dinucleotide
    sensors, Anal. Chim. Acta, 747 (2012) 84–91. 
-  Z.M. Saigl, O.A. Aljuaid, Removal of Rhodamine dye from
    foodstuffs using column chromatography and isotherm study,
    Sep. Sci. Technol. (Philadelphia), 58 (2023) 1616–1629. 
-  A.A. Inyinbor, F.A. Adekola, G.A. Olatunji, Adsorption of
    Rhodamine B Dye from aqueous solution on Irvingia gabonensis
    biomass: kinetics and thermodynamics studies, S. Afr. J. Chem.,
    68 (2015) 115–125. 
-  A.A. Inyinbor, F.A. Adekola, G.A. Olatunji, Kinetics, isotherms
    and thermodynamic modeling of liquid phase adsorption
    of Rhodamine B dye onto Raphia hookerie fruit epicarp,
    Water Resour. Ind., 15 (2016) 14–27. 
-  M. Zamouche, O. Hamdaoui, Sorption of Rhodamine B by
    cedar cone: effect of pH and ionic strength, Energy Procedia,
    18 (2012) 1228–1239. 
-  S.S.A. Alkurdi, R.A. Al-Juboori, J. Bundschuh, L. Bowtell,
    A. Marchuk, Inorganic arsenic species removal from water
    using bone char: a detailed study on adsorption kinetic and
    isotherm models using error functions analysis, J. Hazard.
    Mater., 405 (2021) 124112, doi: 10.1016/j.jhazmat.2020.124112. 
-  M. Ghaedi, Sh. Heidarpour, S.N. Kokhdan, R. Sahraie,
    A. Daneshfar, B. Brazesh, Comparison of silver and palladium
    nanoparticles loaded on activated carbon for efficient removal
    of methylene blue: kinetic and isotherm study of removal
    process, Powder Technol., 228 (2012) 18–25. 
-  E.C. Lima, F. Sher, A. Guleria, M.R. Saeb, I. Anastopoulos,
    H.N. Tran, A. Hosseini-Bandegharaei, Is one performing the
    treatment data of adsorption kinetics correctly?, J. Environ.
  Chem. Eng., 9 (2021) 104813, doi: 10.1016/j.jece.2020.104813. 
-  Y.S. Ho, D. Wase’, C.F. Forster, Removal of lead ions from
    aqueous solution using sphagnum moss peat as adsorbent,
    Water SA, 22 (1996) 219–224. 
-  H.K. Boparai, M. Joseph, D.M. O’carroll, Kinetics and
    thermodynamics of cadmium ion removal by adsorption onto
    nano zerovalent iron particles, J. Hazard. Mater., 186 (2011)
    458–465. 
-  M.M. Góes, M. Keller, V. Masiero Oliveira, L.D.G. Villalobos,
    J.C.G. Moraes, G.M. Carvalho, Polyurethane foams synthesized
    from cellulose-based wastes: kinetics studies of dye
    adsorption, Ind. Crops Prod., 85 (2016) 149–158. 
-  Y. Liu, New insights into pseudo-second-order kinetic equation
    for adsorption, Physicochem. Eng. Aspects, 320 (2008) 275–278. 
-  H.M. Al-Saidi, M.A. Abdel-Fadeel, S.S. Alharthi, Preconcentration
    and ultrasensitive spectrophotometric estimation
    of tungsten in soils using polyurethane foam in the presence
    of Rhodamine B: kinetic and thermodynamic studies, and
    designing a simple automated preconcentration system, J. Saudi
    Chem. Soc., 25 (2021) 101301, doi: 10.1016/j.jscs.2021.101301. 
-  U. Jinendra, D. Bilehal, B.M. Nagabhushana, A. Praveen
    Kumar, Adsorptive removal of Rhodamine B dye from aqueous
    solution by using graphene–based nickel nanocomposite,
  Heliyon, 7 (2021) e06851, doi: 10.1016/j.heliyon.2021.e06851. 
-  R. Ghibate, O. Senhaji, R. Taouil, Kinetic and thermodynamic
    approaches on Rhodamine B adsorption onto pomegranate
    peel, Case Stud. Chem. Environ. Eng., 3 (2021) 100078,
    doi: 10.1016/j.cscee.2020.100078. 
-  J. Wang, X. Guo, Adsorption kinetic models: physical meanings,
    applications, and solving methods, J. Hazard. Mater., 390 (2020)
    122156, doi: 10.1016/j.jhazmat.2020.122156. 
-  M. Rajabi, K. Mahanpoor, O. Moradi, Preparation of PMMA/GO
    and PMMA/GO-Fe3O4 nanocomposites for malachite green dye
    adsorption: kinetic and thermodynamic studies, Composites,
  Part B, 167 (2019) 544–555. 
-  J.C.P. Vaghetti, E.C. Lima, B. Royer, B.M. da Cunha,
    N.F. Cardoso, J.L. Brasil, S.L.P. Dias, Pecan nutshell as
    biosorbent to remove Cu(II), Mn(II) and Pb(II) from aqueous
    solutions, J. Hazard. Mater., 162 (2009) 270–280. 
-  M.T. Amin, A.A. Alazba, M. Shafiq, Successful application
    of Eucalyptus camdulensis biochar in the batch adsorption of
    crystal violet and methylene blue dyes from aqueous solution,
    Sustainability (Switzerland), 13 (2021) 3600, doi: 10.3390/su13073600. 
-  Z.R. Lopičić, M.D. Stojanović, S.B. Marković, J.V. Milojković,
    M.L. Mihajlović, T.S. Kaluđerović Radoičić, 
 M.L.j. Kijevčanin,
    Effects of different mechanical treatments on structural
    changes of lignocellulosic waste biomass and subsequent Cu(II)
    removal kinetics, Arabian J. Chem., 12 (2019) 4091–4103.
-  K.L. Tan, B.H. Hameed, Insight into the adsorption kinetics
    models for the removal of contaminants from aqueous
    solutions, J. Taiwan Inst. Chem. Eng., 74 (2017) 25–48. 
-  N. Ouasfi, M. Zbair, S. Bouzikri, Z. Anfar, M. Bensitel, H. Ait
    Ahsaine, E. Sabbard, L. Khamliche, Selected pharmaceuticals
    removal using algae derived porous carbon: experimental,
    modeling and DFT theoretical insights, RSC Adv., 9 (2019)
    9792–9808. 
-  C.P. Amézquita-Marroquín, P. Torres-Lozada, L. Giraldo,
    P.D. Húmpola, E. Rivero, P.S. Poon, J. Matos, J.C. Moreno-Piraján, Sustainable production of nanoporous carbons: kinetics
    and equilibrium studies in the removal of atrazine, J. Colloid
  Interface Sci., 562 (2020) 252–267. 
-  R. George, S. Sugunan, Kinetics of adsorption of lipase onto
    different mesoporous materials: evaluation of Avrami model
    and leaching studies, J. Mol. Catal. B: Enzym., 105 (2014) 26–32. 
-  S.M. Abdel Azeem, S.M. Mohamed Attaf, M.F. El-Shahat,
    Acetylacetone phenylhydrazone functionalized polyurethane
    foam: determination of copper, zinc and manganese in
    environmental samples and pharmaceutics using flame atomic
    absorption spectrometry, React. Funct. Polym., 73 (2013)
    182–191. 
-  Z.M. Saigl, Sorption behavior of selected chlorophenols
    onto polyurethane foam treated with iron(III): kinetics and
    thermodynamic study, Environ. Monit. Assess., 192 (2020) 748,
    
 doi: 10.1007/s10661-020-08693-5.
-  H. Qiu, L. Lv, B.-c. Pan, Q.-j. Zhang, W.-m. Zhang, Q.-x. Zhang,
    Critical review in adsorption kinetic models, J. Zhejiang Univ.
    Sci. A, 10 (2009) 716–724. 
-  S. Dawood, T.K. Sen, Removal of anionic dye Congo red from
    aqueous solution by raw pine and acid-treated pinecone
    powder as adsorbent: equilibrium, thermodynamic, kinetics,
    mechanism and process design, Water Res., 46 (2012) 1933–1946. 
-  K.U. Ahamad, R. Singh, I. Baruah, H. Choudhury, M.R. Sharma,
    Equilibrium and kinetics modeling of fluoride adsorption
    onto activated alumina, alum and brick powder, Groundwater
    Sustainable Dev., 7 (2018) 452–458. 
-  H.M. Al-Saidi, M.S. El-Shahawi, An innovative platform
    exploiting solid microcrystalline cellulose for selective separation
    of bromate species in drinking water: preparation,
    characterization, kinetics and thermodynamic study, Microchem.
    J., 159 (2020) 105510, doi: 10.1016/j.microc.2020.105510. 
-  L.A. Zambrano-Intriago, M.L. Gorozabel-Mendoza,
    A.C. Mosquera, M.H. Delgado-Demera, M.M.M. Bezerra
    Duarte, J.M. Rodríguez-Díaz, Kinetics, equilibrium, and
    thermodynamics of the blue 19 dye adsorption process using
    residual biomass attained from rice cultivation, Biomass
    Convers. Biorefin., 12 (2020) 3843–3855. 
-  A.R. Cestari, E.F.S. Vieira, A.A. Pinto, E.C.N. Lopes, Multistep
    adsorption of anionic dyes on silica/chitosan hybrid: 1.
    Comparative kinetic data from liquid- and solid-phase models,
    J. Colloid Interface Sci., 292 (2005) 363–372. 
-  C. Yao, C. Zhu, A new multi-mechanism adsorption kinetic
    model and its relation to mass transfer coefficients, Surf.
    Interfaces, 26 (2021) 101422, doi: 10.1016/j.surfin.2021.101422. 
-  A.A. Bhatti, S. Memon, N. Memon, A. Bhatti, B. Solangi,
    Evaluation of chromium(VI) sorption efficiency of modified
    Amberlite XAD-4 resin, Arabian J. Chem., 10 (2013) 1111–1118. 
-  B.H. Hameed, M.I. El-Khaiary, Equilibrium, kinetics and
    mechanism of malachite green adsorption on activated carbon
    prepared from bamboo by K2CO3 activation and subsequent
    gasification with CO2, J. Hazard. Mater., 157 (2008) 344–351. 
-  F. Xiong, B. Hwang, Z. Jiang, D. James, H. Lu, J. Moortgat,
    Kinetic emission of shale gas in saline water: Insights from
    experimental observation of gas shale in canister desorption
    testing, Fuel, 300 (2021) 121006, doi: 10.1016/j.fuel.2021.121006. 
-  E. Abdelillah, A. Elhussein, S. Şahin, Ş. Sena Bayazit, Preparation
    of CeO2 nanofibers derived from Ce-BTC metal-organic
    frameworks and its application on pesticide adsorption, J. Mol.
    Liq., 255 (2018) 10–17. 
-  M.A. Al-Ghouti, D.A. Da’ana, Guidelines for the use and
    interpretation of adsorption isotherm models: a review,
    J. Hazard. Mater., 393 (2020) 122383, doi: 10.1016/j.jhazmat.2020.122383. 
-  K.Y. Foo, B.H. Hameed, Insights into the modeling of adsorption
    isotherm systems, Chem. Eng. J., 156 (2010) 2–10. 
-  W.Y. Cheng, N. Li, Y.Z. Pan, L.H. Jin, The adsorption of
    Rhodamine B in water by modified zeolites, Mod. Appl. Sci.,
    10 (2016) 67, doi: 10.5539/mas.v10n5p67. 
-  J. Shah, M. Rasul Jan, A. Haq, Y. Khan, Removal of Rhodamine
    B from aqueous solutions and wastewater by walnut shells:
    kinetics, equilibrium and thermodynamics studies, Front.
    Chem. Sci. Eng., 7 (2013) 428–436. 
-  R. Jain, M. Mathur, S. Sikarwar, A. Mittal, Removal of the
    hazardous dye Rhodamine B through photocatalytic and
    adsorption treatments, J. Environ. Manage., 85 (2007) 956–964. 
-  M.N. Sahmoune, Evaluation of thermodynamic parameters
    for adsorption of heavy metals by green adsorbents, Environ.
    Chem. Lett., 17 (2019) 697–704. 
-  H.N. Tran, S.-J. You, H.-P. Chao, Thermodynamic parameters of
    cadmium adsorption onto orange peel calculated from various
    methods: a comparison study, J. Environ. Chem. Eng., 4 (2016)
    2671–2682. 
-  S. Chen, C. Qin, T. Wang, F. Chen, X. Li, H. Hou, M. Zhou, Study
    on the adsorption of dyestuffs with different properties by
    sludge-rice husk biochar: adsorption capacity, isotherm, kinetic,
    thermodynamics and mechanism, J. Mol. Liq., 285 (2019) 62–74. 
-  S. Fan, Y. Wang, Z. Wang, J. Tang, J. Tang, X. Li, Removal of
    methylene blue from aqueous solution by sewage sludge-derived
    biochar: adsorption kinetics, equilibrium, thermodynamics
    and mechanism, J. Environ. Chem. Eng., 5 (2017) 601–611.