Granular ferric hydroxide (GFH), a combination of poorly crystallized FeOOH, was investigated for removal of fluoride (F) from water. Adsorption was studied in batch experiments at room temperature together with the effect of contact time, pH, initial F concentration, and SO42- and Cl- as interfering anions. Lower pH with higher initial F concentration and longer contact time increased the F removal efficiency. In the absence of interfering anions, maximum removal of F approaching 88 percent was achieved at pH 6 after 30 min from water containing 7 mg F/L. Considering economic and feasibility aspects, adsorption of F with GFH is recommended as a successful method of F removal from water and wastewater treatment plants.
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Univ Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki 3058572, Japan
China Univ Geosci Beijing, Sch Water Resources & Environm, Beijing 100083, Peoples R ChinaUniv Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki 3058572, Japan
Chen, Nan
Zhang, Zhenya
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Univ Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki 3058572, JapanUniv Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki 3058572, Japan
Zhang, Zhenya
Feng, Chuanping
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China Univ Geosci Beijing, Sch Water Resources & Environm, Beijing 100083, Peoples R ChinaUniv Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki 3058572, Japan
Feng, Chuanping
Sugiura, Norio
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Univ Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki 3058572, JapanUniv Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki 3058572, Japan
Sugiura, Norio
Li, Miao
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Univ Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki 3058572, Japan
China Univ Geosci Beijing, Sch Water Resources & Environm, Beijing 100083, Peoples R ChinaUniv Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki 3058572, Japan
Li, Miao
Chen, Rongzhi
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Univ Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki 3058572, JapanUniv Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki 3058572, Japan