Iron-doped chitosan microsphere was prepared successfully and employed for effective adsorption of As(III). The results showed that the adsorption capacity benefited from the increase of iron content, and the maximum adsorption capacity was achieved at pH=8. According to the study of adsorption kinetics, adsorption rate was controlled by liquid film diffusion at a lower rotational speed, while it was controlled by chemical reaction rate at a higher rotational speed. The Freundlich and Temkin models exhibited a better fit to adsorption isotherm data, which indicated the adsorption of As(III) on iron-doped chitosan microsphere was chemisorption and the active sites of adsorbents were non-uniform distributed. Adsorption process was a spontaneous exothermic reaction because its ΔG and ΔH were negative. In presence of cations (Cd2+, Pb2+ or Zn2+) in solution, the iron-doped chitosan microsphere also showed the significant removal of As(III). However, the existence of anions (NO3 -, SO4 2- or PO4 3-) inhibited the As(III) removal at different level. PO4 3- showed the most significant side effects on the removal of As(III) by iron-doped chitosan microsphere. The used iron-doped chitosan adsorbent can be effectively regenerated using 1.0molㆍL-1 NaOH solution, and the adsorption efficiency decreased only 15.69% after being reused three times. The results of XPS, FT-IR showed that the adsorption was mainly achieved by the coordination interaction between As (III) and doped Fe in adsorbent.

Chitosan Adsorption As(III) Kinetics Isotherms

de Namor AFD, Al Hakawati N, Abou Hamdan W, Soualhi R, Korfali S, Valiente L, J. Hazard. Mater., 326, 61 (2017)
Aredes S, Klein B, Pawlik M, J. Clean Prod., 60, 71 (2013)
Tang WS, Li Q, Gao SA, Shang JK, J. Hazard. Mater., 192(1), 131 (2011)
Adio SO, Omar MH, Asif M, Saleh TA, Process Saf. Environ. Protect., 107, 518 (2017)
Sribudda D, Wannachod T, Ramakul P, Pancharoen U, Phatanasri S, Korean J. Chem. Eng., 33(1), 197 (2016)
Hsueh YM, Su CT, Shiue HS, Chen WJ, Pu YS, Lin YC, Tsai CS, Huang CY, Food Chem. Toxicol., 107, 167 (2017)
Sattar A, Xie SY, Hafeez MA, Wang X, Hussain HI, Iqbal Z, Pan YH, Iqbal M, Shabbir MA, Yuan ZH, Environ. Toxicol. Pharmacol., 48, 214 (2016)
Wei BG, Yu JP, Wang J, Yang LS, Li HR, Kong C, Xia YJ, Wu KG, Environ. Toxicol. Pharmacol., 53, 89 (2017)
Hsieh RL, Su CT, Shiue HS, Chen WJ, Huang SR, Lin YC, Lin MI, Mu SC, Chen RJ, Hsueh YM, Toxicol. Appl. Pharmacol., 321, 37 (2017)
Roh T, Lynch CF, Weyer P, Wang K, Kelly KM, Ludewig G, Environ. Res., 159, 338 (2017)
Bandpei AM, Mohseni SM, Sheikhmohammadi A, Sardar M, Sarkhosh M, Almasian M, Avazpour M, Mosallanejad Z, Atafar Z, Nazari S, SoheilaRezaei, Korean J. Chem. Eng., 34(2), 376 (2017)
Chatterjee S, De S, Sep. Purif. Technol., 179, 357 (2017)
Kim JE, Han SM, Kim YH, Korean J. Chem. Eng., 34(7), 2096 (2017)
Olah Z, Kremmer T, Vogg AT, Varga Z, Suzucs Z, Neumaier B, Doczi R, Appl. Radiat. Isot., 122, 111 (2017)
Ortega A, Oliva I, Contreras KE, Gonzalez I, Cruz-Diaz MR, Rivero EP, Sep. Purif. Technol., 184, 319 (2017)
Urbano BF, Rivas BL, Martinez F, Alexandratos SD, React. Funct. Polym., 72(9), 642 (2012)
Song PP, Yang ZH, Zeng GM, Yang X, Xu HY, Wang LK, Xu R, Xiong WP, Ahmad K, Chem. Eng. J., 317, 707 (2017)
Sen M, Manna A, Pal P, J. Membr. Sci., 354(1-2), 108 (2010)
He YR, Tang YP, Ma DC, Chung TS, J. Membr. Sci., 541, 262 (2017)
Ji JW, Yun YB, Zeng Z, Wang RC, Zheng XY, Deng LH, Li CL, Appl. Surf. Sci., 351, 715 (2015)
Cho DW, Jeon BH, Chon CM, Schwartz FW, Jeong Y, Song H, J. Ind. Eng. Chem., 28, 60 (2015)
Liu H, Wei ZJ, Hu M, Deng YH, Tong Z, Wang CY, RSC Adv., 4, 29344 (2014)
Kumari S, Annamareddy SHK, Abanti S, Rath PK, Int. J. Biol. Macromol., 104, 1697 (2017)
Abou El-Reash YG, Otto M, Kenawy IM, Ouf AM, Int. J. Biol. Macromol., 49, 513 (2011)
He J, Bardelli F, Gehin A, Silvester E, Charlet L, Water Res., 101, 1 (2016)
Li HB, Bi SD, Liu L, Dong WF, Wang X, Desalination, 278(1-3), 397 (2011)
Mahmoodi NM, Hayati B, Arami M, Lan C, Desalination, 268(1-3), 117 (2011)
Liu ZM, Chen JT, Wu YC, Li YR, Zhao JY, Na P, J. Hazard. Mater., 343, 304 (2018)
Cheng ZH, Fu FL, Dionysiou DD, Tang B, Water Res., 96, 22 (2016)
Siddiqui SI, Chaudhry SA, Process Saf. Environ. Protect., 111, 592 (2017)
Kumar A, Pandeu J, Kumar S, Korean J. Chem. Eng., 35(2), 456 (2018)
Fu DD, He ZQ, Su SS, Xu B, Liu YL, Zhao YP, J. Colloid Interface Sci., 505, 105 (2017)
Wen ZP, Zhang YL, Zhou XF, Chen R, Sep. Purif. Technol., 176, 395 (2017)
Tanhaei B, Ayati A, Lahtinen M, Sillanpaa M, Chem. Eng. J., 259, 1 (2015)
Wu K, Liu RP, Li T, Liu HJ, Peng JM, Qu JH, Chem. Eng. J., 226, 393 (2013)
Lazinski W, Rudzinski W, Plazinska A, Adv. Colloid Interface Sci., 152, 2 (2009)
Gupta SS, Bhattacharyya KG, Adv. Colloid Interface Sci., 162, 39 (2011)
Tan KL, Hameed BH, J. Taiwan Inst. Chem. Eng., 74, 25 (2017)
Simonin JP, Chem. Eng. J., 300, 254 (2016)
Yu HM, Pang J, Ai T, Liu L, J. Taiwan Inst. Chem. Eng., 62, 21 (2016)
Wang FT, Pan YF, Cai PX, Guo TX, Xiao HN, Bioresour. Technol., 241, 482 (2017)
Singh TS, Pant KK, Sep. Purif. Technol., 36(2), 139 (2004)
Zhang JM, Xiong ZH, Li C, Wu CS, J. Mol. Liq., 221, 43 (2016)
Xiong YY, Li JQ, Gong LL, Feng XF, Meng LN, Zhang L, Meng PP, Luo MB, Luo F, J. Solid State Chem., 246, 16 (2017)
de Luna MDG, Flores ED, Genuino DAD, Futalan CM, Wan MW, J. Taiwan Inst. Chem. Eng., 44, 646 (2013)
Kayranli B, Chem. Eng. J., 173(3), 782 (2011)
Wen ZP, Zhang YL, Guo S, Chen R, J. Colloid Interface Sci., 486, 211 (2017)
Teimouri A, Esmaeili H, Foroutan R, Ramavandi B, Korean J. Chem. Eng., 35, 479 (2017)
Nasir AM, Goh PS, Ismail AF, Chemosphere, 200, 504 (2018)
Dawood S, Sen TK, Water Res., 46, 1933 (2012)
Lashkenari MS, Davodi B, Eisazadeh H, Korean J. Chem. Eng., 28(7), 1532 (2011)
van Erp TS, Martens JA, Microporous Mesoporous Mater., 145, 188 (2011)
Joshi N, Romanias MN, Riffault V, Thevenet F, Aeolian Res., 27, 35 (2017)
Ladavos AK, Katsoulidis AP, Iosifidis A, Triantafyllidis KS, Pinnavaia TJ, Pomonis PJ, Microporous Mesoporous Mater., 151, 126 (2012)
Kim J, Lee C, Lee SM, Lalhmunsiama, Jung J, Ecotox. Environ. Safe., 147, 80 (2018)
Chen B, Zhu ZL, Ma J, Qiu YL, Chen JH, J. Mater. Chem. A, 1, 11355 (2013)
Qi JY, Zhang GS, Li HN, Bioresour. Technol., 193, 243 (2015)
Lin LN, Qiu WW, Wang D, Huang Q, Song ZG, Chau HW, Ecotox. Environ. Safe., 144, 514 (2017)
Wen ZP, Zhang YL, Wang Y, Li LN, Chen R, Chem. Eng. J., 312, 39 (2017)
Liu C, Jin RN, Ouyang XK, Wang YG, Appl. Surf. Sci., 408, 77 (2017)
Argun ME, Dursun S, Ozdemir C, Karatas M, J. Hazard. Mater., 141(1), 77 (2007)
Xie QY, Li Y, Lv ZL, Zhou H, Yang XJ, Chen J, Guo H, Sci. Rep., 7, 3316 (2017)
Cui GR, Liu M, Chen Y, Zhang W, Zhao JQ, Carbohydr. Polym., 154, 40 (2016)
Wang J, Xu WH, Chen L, Huang XJ, Liu JH, Chem. Eng. J., 251, 25 (2014)
Wei W, Design of ionic barrier-based capsules and their application for selective recovery of precious metals, Chonbuk National University, Republic of Korea (2016).
Fen YW, Yunus WMM, Talib ZA, Optik, 124, 126 (2013)
Won SW, Park J, Mao J, Yun YS, Bioresour. Technol., 102(4), 3888 (2011)
Shen CS, Chen H, Wu SS, Wen YZ, Li LN, Jiang Z, Li MC, Liu WP, J. Hazard. Mater., 244-245, 689 (2013)
Jang JH, Choi YM, Choi YY, Joo MK, Park MH, Choi BG, Kang EY, Jeong B, J. Mater. Chem., 21, 5484 (2011)
Song LJ, You QL, Li J, Cheng QR, Liao GY, Xia H, Wang DS, Mater. Lett., 185, 286 (2016)
Shao BB, Guan YY, Tian ZY, Guan XH, Wu DL, Colloids Surf. A: Physicochem. Eng. Asp., 506, 703 (2016)
Valenzuela C, Hernandez V, Morales MS, Neira-Carrillo A, Pizarro F, LWT - Food Sci. Technol., 59, 1283 (2014)
Won SW, Kwak IS, Yun YS, Bioresour. Technol., 160, 93 (2014)
Bosiger P, Tegl G, Richard IMT, Gat LL, Huber L, Stagl V, Mensah A, Guebitz GM, Rossi RM, Fortunato G, Carbohydr. Polym., 181, 551 (2018)
Wang Y, Wang EL, Wu ZM, Li H, Zhu Z, Zhu XS, Dong Y, Carbohydr. Polym., 101, 517 (2014)
Cui Z, Xiang Y, Si JJ, Yang M, Zhang Q, Zhang T, Carbohydr. Polym., 73, 111 (2008)