References
  -  H.M. Gontijo, S.D.F. Rocha, E.M.A. Becheleni, Modelagem do
    cristalizador a vácuo para tratamento de efluentes líquidos de
    refinarias de petróleo, Engevista, 16 (2014) 19–27. 
-  L. Bandura, A. Woszuk , D. Kołodynska, W. Franus, Application
    of mineral sorbents for removal of petroleum substances:
    a review, Minerals, 7 (2017) 37. 
-  T. Paulauskiene, I. Jucike, N. Jušcenko, D. Baziuke, The use of
    natural sorbents for spilled crude oil and ˙diesel cleanup from
    the water surface, Water Air Soil Pollut., 225 (2014) 1959–1971. 
-  J. Zhang, S. Fan, J. Yang, X. Du, F. Li, H. Hou, Petroleum contamination
    of soil and water, and their effects on vegetables
    by statistically analyzing entire data set, Sci. Total Environ.,
    476–477 (2014) 258–265. 
-  A. Alva-Argáez, A.C. Kokossis, R. Smith, The design of water
    using systems in petroleum refining using a water-pinch
    decomposition, Chem. Eng. J., 128 (2007) 33–46. 
-  P.L. Mesquita, C.R. Souza, N.T.G. Santos, S.D.F. Rocha, Fixedbed
    study for bone char adsorptive removal of refractory
    organics from electrodialysis concentrate produced by petroleum
    refinery, Environ. Technol., (2017) 1–13. 
-  T.C.M. Nonato, A.A.A. Alves, M.L. Sens, R.L. Dalsasso, Produced
    water from oil - A review of the main treatment technologies,
    J. Environ. Chem. Toxicol., 2(1) (2018) 23–27. 
-  E.M.A. Becheleni, R.P. Borba, M.M. Seckler, S.D.F. Rocha, Water
    recovery from saline streams produced by electrodialysis,
    Environ. Technol., 36 (2015) 386–394. 
-  E. AitHsine, A. Benhammou, M.N. Pons, Water resource management
    in soft drink industry-water use and wastewater generation,
    Environ. Technol., 26 (2005) 1309–1316. 
-  M.N. Rashed, Adsorption technique for the removal of organic
    pollutants from water and wastewater. In: Rashed, M.N. (Ed.),
    Organic Pollutants – Monitoring, Risk and Treatment. InTech,
    Rijeka, Croatia, (2013) 167–194. 
-  O. Botalova, J. Schwarzbauer, T. Frauenrath, L. Dsikowitzky,
    Identification and chemical characterization of specific organic
    constituents of petrochemical effluents, Water Res., 43(15)
    (2009) 3797–3812. 
-  J. Saien, F. Shahrezaei, Organic pollutants removal from petroleum
    refinery wastewater with nanotitania photocatalyst
    and UV light emission, Int. J. Photoenergy, (2012) 1–5. 
-  Y.A. Mustafa, A.I. Alwared, M. Ebrahim, Removal of oil from
    wastewater by advanced oxidation process/homogeneous
    process, J. Eng., 19(6) (2013) 686–694. 
-  S.S. Silva, O. Chiavone-Filho, E.L. Barros-Neto, E.L. Foletto, Oil
    removal from produced water by conjugation of flotation and
    photo-Fenton processes, J. Environ. Manage., 147 (2015) 257–263. 
-  S. Masu, E. Grecu, Solutions in the coagulation of oil wastewater,
    Studia Ubbchemia, LXI, 4 (2016) 189–202. 
-  S. Kumar, B.K. Nandi, C. Guria, A. Mandal, Oil removal from
    produced water by ultrafiltration using polysulfone membrane,
    Braz. J. Chem. Eng., 34(2) (2017) 583–596. 
-  C.C. Almeida, P.R.F. Costa, M.J.M. Melo, E.V. Santos, C.A.
    Martínez-Huitle, Application of electrochemical technology
    for water treatment of Brazilian industry effluents, J. Mex.
    Chem. Soc., 58 (2014) 276–286. 
-  H. Paudyal, B. Pangeni, K. Inoue, K. Ohto, H. Kawakita, K.N.
    Ghimire, H. Harada, S. Alam, Adsorptive removal of strontium
    from water by using chemically modified orange juice
    residue, Separat. Sci. Technol., 49 (2014) 1244–1250. 
-  Z.V.P. Murthy, S. Parmar, Removal of Sr2þ by electrocoagulation
    using stainless steel and aluminium electrode, Desalination,
    282 (2011) 63–67. 
-  S.G. Mashkani, P.T.M. Ghazvini, Biotechnological potential of
    Azollafiliculoides for biosorption of Csþ and Sr2þ: Application
    of micro-PIXE for measurement of biosorption, Biores. Technol.,
    100 (2009) 1915–1921. 
-  T.K. Rout, D.K. Sengupta, G. Kaur, S. Kumar, Enhanced
    removal of dissolved metal ions in radioactive effluents by
    flocculation, Int. J. Miner. Process., 80 (2006) 215–222. 
-  N. Rawat, P.K. Mohapatra, D.S. Lakshmi, A. Bhattacharyya,
    V.K. Manchanda, Evaluation of a supported liquid membrane
    containing a macrocyclic ionophore for selective removal of
    Sr2þ from nuclear waste solution, J. Membr. Sci., 275 (2006)
    82–88. 
-  J. Cao, P. Gu, J. Zhao, D, Zhang, Y. Deng, Removal of strontium
    from an aqueous solution using co-precipitation followed
    by microfiltration (CPMF), J. Radioanal. Nucl. Ch., 28(5)
    (2010) 539–546. 
-  A. Hanafi, Adsorption of cesium, thallium, strontium and
    cobalt radionuclides using activated carbon, J. At. Mol. Sci.,
    1(4) (2010) 292–300. 
-  R.A. Shawabkeh, D.A. Rockstraw, R.K. Bhada, Cu2þ and Sr2þ
    adsorption by a novel material manufactured from pecan
    shells, Carbon, 40 (2002) 781–786. 
-  M. Turek, P. Dydo, R. Klimed, Salt production from coal-mine
    brine in ED-evaporation-crystallization system, Desalination,
    184 (2005) 439–446. 
-  O. Lefebvre, R. Moletta, Treatment of organic pollution in
    industrial saline wastewater: a literature review, Water Res.,
    40 (2006) 3671–3682. 
-  I. Smiciklas, S. Dimovic, M. Sljivic, I. Plecas, B. Loncar, M.
    Mitric, Resource recovery of animal bones: Study on sorptive
    properties and mechanism for Sr2+ ions, J. Nucl. Mater., 400
    (2010) 15–24. 
-  A. Bigi, E. Boanini, C. Capuccini, M. Gazzano, Strontium-substituted hydroxyapatite nanocrystals, Inorg. Chim.
    Acta., 360(3) (2007) 1009–1016. 
-  M.D. O’Donnell, Y. Fredholm, A.D. Rouffignac, R.G. Hill,
    Structural analysis of a series of strontium-substituted apatites,
    Acta Biomater., 4 (2008) 1455–1464. 
-  H. Zhu, H. Wang, G. Wang, K. Zhang, Removal of Fluorine
    from Water by the Aluminum-Modified Bone Char. In: IPCBEE
    (Hrsg.), International Conference on Biology, Environment
    and Chemistry. IACSIT Press, Singapore, 1 (2010) 455–457. 
-  E.M. Nigri, M.A.P. Cechinel, D.A. Mayer, L.P. Mazur, J.M. Loureiro,
    S.D.F. Rocha, V.J.P. Vilar, Cow bones char as a green sorbent
    for fluorides removal from aqueous solutions: batch and
    fixed-bed studies, Environ. Sci. Pollut. Res., 24 (2017) 2364–2380. 
-  L.R. Brunson, D.A. Sabatini, An evaluation of fish bone char
    as an appropriate arsenic and fluoride removal technology for
    emerging regions, Environ. Eng. Sci., 26 (2009) 1777–1784. 
-  I. Smiciklas, S. Dimovic, M. Sljivic, I. Plecas, The batch study
    of Sr2+ sorption by bone char, J. Environ. Sci. Health, Part A:
    Toxic/Hazard. Subst. Environ. Eng., 43(2) (2008) 210–217. 
-  S. Dimović, I. Smiciklas, I. Plećas, D. Antonović, Kinetic study
    of Sr2+ sorption by bone char, Sep. Sci. Technol., 44(3) (2009)
    645–667. 
-  E.M. Nigri, A. Bhatnagar, S.D.F. Rocha, Thermal regeneration
    process of bone char used in the fluoride removal from aqueous
    solution, J. Clean. Prod., 142 (2017) 3558–3570. 
-  T. Nur, P. Loganathan, T.C. Nguyen, S. Vigneswaran, G. Singh,
    J. Kandasamy, Batch and column adsorption and desorption
    of fluoride using hydrous ferric oxide: Solution chemistry and
    modelling, Chem. Eng. J., 247 (2014) 93–102. 
-  N. Chen, Z. Zhang, C. Feng, M. Li, R. Chen, N. Sugiura, Investigations
    on the batch and fixed-bed column performance of
    fluoride adsorption by Kanuma mud, Desalination, 268 (2011)
    76–82. 
-  A. Bhatnagar, E. Kumara, M. Sillanpaa, Fluoride removal from
    water by adsorption - A review, Chem. Eng. J., 171 (2011) 811–840. 
-  S.S. Tripathy, J.L. Bersillon, K. Gopal, Removal of fluoride from
    drinking water by adsorption onto alum-impregnated activated
    alumina, Sep. Purif. Technol., 50 (2006) 310–317. 
-  A. Rezaee, H. Rangkooy, A.Jonidi-Jafari, A. Khavanin, Surface
    modification of bone char for removal of formaldehyde from
    air, Appl. Surf. Sci., 286 (2013) 235–239. 
-  S.M. Wabaidur, M.A. Khan, M.R. Siddiqui, Z.A. Alothman,
    M.S. Al-Ghamdi, I.H. Al-Sohami, Dodecyl sulfate chain
    anchored bio-char to sequester triaryl methane dyes: Equilibrium,
    kinetics, and adsorption mechanism, Desal. Water
    Treat., 67 (2017) 357–370. 
-  C.K. Rojas-Mayorga, A. Bonilla-Petriciolet, J. Silvestre-Albero,
    I.A. Aguayo-Villarreal, D.I. Mendoza-Castillo, Physico-chemical
    characterization of metal-doped bone chars and their
    adsorption behavior for water defluoridation, Appl. Surf. Sci.,
    355 (2015) 748–760. 
-  J.P. Chen, S. Wu, K.H. Chong, Surface modification of a granular
    activated carbon by citric acid for enhancement of copper
    adsorption, Carbon, 41(10) (2003) 1979–1986. 
-  G.B. Cardoso, D. Maniglio, F.Z. Volpato, A. Tondon, C. Migliaresi,
    R.R. Kaunas, C.A.C. Zavaglia, Oleic acid surfactant in
    polycaprolactone/hydroxyapatite-composites for bone tissue
    engineering, J. Biomed. Mater. Res. B. Appl. Biomater., 104(6)
    (2015) 1076–1082. 
-  Y. Luo, Y. Ling, W. Guo, J. Pang, W. Liu, Y. Fang, X. Wen, K.
    Wei, X. Gao, Docetaxel loaded oleic acid-coated hydroxyapatite
    nanoparticles enhance the docetaxel induced apoptosis
    through activation of caspase-2 in androgen independent
    prostate cancer cells, J. Control. Release, 147 (2010) 278–288. 
-  M.A. Trofimovich, A.A. Galiguzov, D.I. Kalugin, A.P. Malakho,
    A.D. Rogozin, coal tar pitch modification methods: effect of
    surfactant substances and carbon additives on binder properties,
    Refract. Ind. Ceram., 56 (2016) 664–669. 
-  M. Khalil, J. Yu, N. Liu, R.L. Lee, Non-aqueous modification
    of synthesized hematite nanoparticles with oleic acid, Colloid
    Surface A: Physicochem. Eng. Asp., 453 (2014) 7–12. 
-  Z. Li, Y. Zhu, Surface-modification of SiO2 nanoparticles with
    oleic acid, Appl. Surf. Sci., 211(4) (2003) 315–320. 
-  A.H. Mahvi, M. Vosoughi, M.J. Mohammadi, A. Asadi, B.
    Hashemzadeh, A. Zahedi, S. Pourfadakar, Sodium dodecyl
    sulfate modified-zeolite as a promising adsorbent for
    the removal of natural organic matter from aqueous environments,
    Health Scope, 5(1) (2016) 1–8. 
-  X.l. Song, M.W. Zhang, Y. Zhang, S.T. Huang, B.Y. Geng, R.B.
    Meng, Y.Z. Yang, Y.S. Zhong, H.Y. Liu, Surface modification
    of coconut-based activated carbon by SDS and its effects on
    Pb2+ adsorption, J. Cent. South Univ., 20 (2013) 1156–1160. 
-  U.E. Chaudhari, A.K. Wanjari, Sodium dodecyl sulfate
    impregnated granulated activated charcoal for the scavenging
    of Cr (VI) metal ions from aqueous solution, Int. J. Chem.
    Phys. Sci., 4 (2015) 261–266. 
-  P. Pourrezaei, P. Drzewicz, Y. Wang, E.M. Gamal, L.A. Perez-Estrada,
    J.W. Martin, J. Anderson, S. Wiseman, K. Liber, J.P. Giesy,
    The impact of metallic coagulants on the removal of organic
    compounds from oil sands process-affected water, Environ.
    Sci. Technol., 45(19) (2011) 8452–8459. 
-  S.M. Anisuzzaman, C.G. Joseph, Y.H. Taufiq-Yap, D. Krishnaiah,
    V.V. Tay, Modification of commercial activated carbon for
    the removal of 2, 4-dichlorophenol from simulated wastewater,
    J. King Saud Univ. Sci., 27(4) (2015) 318–330. 
-  L.L.S. Borba, M.F.D. Oliveira, M.A.F. Melo, D.M.A. Melo, S.B.C.
    Pergher, Preparação de adsorventes à base de materiais naturais
    hidrofobizados com cera de carnaúba, Perspectiva, Erechim.,
    37(139) (2013) 37–46. 
-  A.S.C. Lopes, S.M.L. Carvalho, D.S.B. Brasil, R.A. Mendes,
    M.O. Lima, Surface modification of commercial activated carbon
    (CAG) for the adsorption of benzene and toluene, Am. J.
    Anal. Chem., (2015) 528–538. 
-  A.A. El-Hendawy, Influence of HNO3 oxidation on the structure
    and adsorptive properties of corncob-based activated carbon,
    Carbon, 41 (2003) 713–722. 
-  F.T. Ademiluyi, S.A. Amadi, N.J. Amakama, Adsorption and
    treatment of organic contaminants using activated carbon
    from waste nigerian bamboo, J. Appl. Sci. Environ. Manage.,
    13(3) (2009) 39–47. 
-  A. Amalraj, A. Pius, Removal of fluoride from drinking water
    using aluminum hydroxide coated activated carbon prepared
    from bark of Morindatinctoria, Appl. Water Sci., 7(6) (2017)
    2653–2665. 
-  L. Li, S. Liu, J. Liu, Surface modification of coconut shell based
    activated carbon for the improvement of hydrophobic VOC
    removal, J. Hazard. Mater., 192 (2011) 683–690. 
-  APHA - American Public Health Association. Standard methods
    for the examination of water and wastewater. 22nd ed.
    Washington, 2012. 
-  P.L. Mesquita, M.A.P. Cruz, C.R. Souza, N.T.G. Santos, E.R.
    Nucci, S.D.R. Rocha, Removal of refractory organics from
    saline concentrate produced by electrodialysis in petroleum
    industry using bone char, Adsorption, 23 (2017) 983–997. 
-  S. Lagergren, K. Svenska, About the theory of so-called adsorption
    of soluble substances, K. Sven. Vetenskapsakad. Handl., 24
    (1898) 1–39. 
-  Y.S. Ho, G. McKay, Pseudo-second order model for sorption
    processes, Process Biochem., 34 (1999) 451–465. 
-  Y.S. Ho, Review of second-order models for adsorption systems,
    J. Hazard. Mater., 36 (2006) 681–689. 
-  W. Nigussie, F. Zewgeb, B.S. Chandravanshi, Removal of
    excess fluoride from water using waste residue from alum
    manufacturing process, J. Hazard. Mater., 147 (2007) 954–963. 
-  S.K. Swain, S. Mishra, T. Patnaik, R.K. Pateld, U. Jhaa, R.K.
    Deye, Fluoride removal performance of a new hybrid sorbent
    of Zr(IV)-ethylenediamine, Chem. Eng. J., 184 (2012) 72–81. 
-  E. Tchomgui-Kamga, A. Veronique, C.P. Nanseu-Njiki, A.
    Nathalie, N. Emmanuel, A. Darchen, Preparation and characterization
    of charcoals that contain dispersed aluminum oxide
    as adsorbents for removal of fluoride from drinking water,
    Carbon, 48 (2010) 333–343. 
-  V.J. Inglezakiz, G.S. Poulopoulos, Adsorption, Ion Exchange
    and catalysis; Design of operations and Environmental applications.
    Elsevier, Netherlands, 2006. 
-  H.M.F. Freundlich, Over the adsorption in solution, J. Phys.
    Chem., 57 (1906) 385–471. 
-  I. Langmuir, The constitution and fundamental properties of
    solids and liquids, J. Am. Chem. Soc., 38(11) (1916) 2221–2295. 
-  O. Redlich, D.L. Peterson, A useful adsorption isotherm, J.
    Phys. Chem., 63 (1959) 1024–1026. 
-  R. Sips, On the structure of a catalyst surface, J. Chem. Phys., 16
    (1948) 490–495. 
-  M.I. Tempkin, V. Pyzhev, Kinetics of ammonia synthesis on
    promoted iron catalyst, Acta Phys. Chim. USSR, 12 (1940) 327–356. 
-  K.H. Hor, J.M.C. Chee, M.N. Chong, B. Jin, C. Saint, P.E. Poh,
    R. Aryal, Evaluation of physicochemical methods in enhancing
    the adsorption performance of natural zeolite as low cost
    adsorbent of methylene blue dye from wastewater, J. Clean.
    Prod., 118 (2016) 197–209. 
-  R. Huang, B. Yang, Q. Liu, K. Ding, Removal of fluoride ions
    from aqueous solutions using protonated cross-linked chitosan
    particles, J. Fluorine Chem., 141 (2012) 29–34. 
-  A. Ausavasukhi, C. Kampoosaen, O. Kengnok, Adsorption
    characteristics of Congo red on carbonized leonardite, J. Clean.
    Prod., 134 (2015) 506–514. 
-  K.Y. Foo, B.H. Hameed, Insights into the modeling of adsorption
    isotherm systems, Chem. Eng. J., 156(1) (2010) 2–10. 
-  S.J. Allen, G. Mckay, J.F. Porter, Adsorption isotherm models
    for basic dye adsorption by peat in single and binary component
    systems, J. Colloid. Interf. Sci., 280(2) (2004) 322–333. 
-  P. Atkins, J. Paula, Atkins’ Physical Chemistry. 9th ed., Oxford
    University Press, 2010. 
-  N.A. Medellin-Castillo, R. Leyva-Ramos, E. Padilla-Ortega,
    R.O. Perez, J.V. Flores-Cano, M.S. Berber-Mendoza, Adsorption
    capacity of bone char for removing fluoride from water
    solution. Role of hydroxyapatite content, adsorption mechanism
    and competing anions, J. Ind. Eng. Chem., 20 (2014)
    4014–4021. 
-  S. Patel, S. Wei, J. Han, W. Gao, Transmission electron microscopy
    analysis of hydroxyapatite nanocrystals from cattle
    bones, Mater. Charact., 109 (2015) 73–78. 
-  T.J. Thompson, M. Gauthier, M. Islam, The application of a new
    method of Fourier transform infrared spectroscopy to the analysis
    of burned bone, J. Archaeol. Sci., 36 (2009) 910–914. 
-  M. Tianyuan, X. Zhiguo, L. Libing, Effect of reaction systems
    and surfactant additives on the morphology evolution
    of hydroxyapatite nanorods obtained via a hydrothermal
    route, Appl. Surf. Sci., 257 (2001) 4384–4388. 
-  S. Dimović, I. Smiciklas, I. Plećas, D. Antonović, M. Mitrić,
    Comparative study of differently treated animal bones for Co2+
    removal, J. Hazard. Mater., 164 (2015) 279–287. 
-  S.V. Oliveira, S.N. Cavalcanti, G.P. Rabello, E.M. Araújo, M.V.L.
    Fook, Análise no infravermelho da hidroxiapatita. In: VI
    National Congress of Mechanical Engineering, Paraíba, Brazil.
    2010. 
-  J.F. Boily, P.L. Gassman, T. Peretyazhko, J. Szanyi, J.M. Zachara,
    FTIR Spectral Components of Schwertmannite, Environ. Sci.
  Technol., 44 (2010) 1185–1190.