Kinetics and isotherm studies for adsorption of arsenic on ferric hydroxide by potentiostatic electrocoagulation
The potentiostatic electrocoagulation (PEC) using iron (CT3 steel) for anode material was applied to removal of arsenic from well water. Some parameters such as potential, electrolysis time, and initial arsenic concentrations were varied for research in this article. The arsenic concentrations befor...
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| Veröffentlicht in: | Vietnam journal of chemistry 2018-12, Vol.56 (6), p.737-741 |
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| container_title | Vietnam journal of chemistry |
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| creator | Binh, Phan Thi Van Anh, Nguyen Thi Thuy, Mai Thi Thanh Xuan, Mai Thi |
| description | The potentiostatic electrocoagulation (PEC) using iron (CT3 steel) for anode material was applied to removal of arsenic from well water. Some parameters such as potential, electrolysis time, and initial arsenic concentrations were varied for research in this article. The arsenic concentrations before and after PEC processing were analysed by AAS method. The mass of ferric hydroxide was calculated via Faraday's law. The results showed that the residual arsenic concentration in water samples from initial arsenic concentration until 800 ppb is smaller than that of WHO requirement (10 ppb). The adsorption of arsenic on ferric hydroxide fitted well into pseudo second‐order kinetic equation, where its equilibrium adsorption capacity was linearly depended on the initial adsorption rate with R2 of 0.9864. The Langmuir parameters Nmax and KL were 23.58 mg/g and 1060 L/mg with correlation constant (R2) of 0.827, respectively. |
| doi_str_mv | 10.1002/vjch.201800080 |
| format | Article |
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Some parameters such as potential, electrolysis time, and initial arsenic concentrations were varied for research in this article. The arsenic concentrations before and after PEC processing were analysed by AAS method. The mass of ferric hydroxide was calculated via Faraday's law. The results showed that the residual arsenic concentration in water samples from initial arsenic concentration until 800 ppb is smaller than that of WHO requirement (10 ppb). The adsorption of arsenic on ferric hydroxide fitted well into pseudo second‐order kinetic equation, where its equilibrium adsorption capacity was linearly depended on the initial adsorption rate with R2 of 0.9864. The Langmuir parameters Nmax and KL were 23.58 mg/g and 1060 L/mg with correlation constant (R2) of 0.827, respectively.</description><identifier>ISSN: 0866-7144</identifier><identifier>ISSN: 2572-8288</identifier><identifier>EISSN: 2572-8288</identifier><identifier>DOI: 10.1002/vjch.201800080</identifier><language>eng</language><publisher>Weinheim: WILEY‐VCH Verlag GmbH & Co. KGaA</publisher><subject>arsenic removal ; CT3 steel anode ; kinetic and isotherm adsorption ; Potentiostatic electrocoagulation</subject><ispartof>Vietnam journal of chemistry, 2018-12, Vol.56 (6), p.737-741</ispartof><rights>2018 Vietnam Academy of Science and Technology, Hanoi & Wiley‐VCH Verlag GmbH & Co. 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Some parameters such as potential, electrolysis time, and initial arsenic concentrations were varied for research in this article. The arsenic concentrations before and after PEC processing were analysed by AAS method. The mass of ferric hydroxide was calculated via Faraday's law. The results showed that the residual arsenic concentration in water samples from initial arsenic concentration until 800 ppb is smaller than that of WHO requirement (10 ppb). The adsorption of arsenic on ferric hydroxide fitted well into pseudo second‐order kinetic equation, where its equilibrium adsorption capacity was linearly depended on the initial adsorption rate with R2 of 0.9864. The Langmuir parameters Nmax and KL were 23.58 mg/g and 1060 L/mg with correlation constant (R2) of 0.827, respectively.</description><subject>arsenic removal</subject><subject>CT3 steel anode</subject><subject>kinetic and isotherm adsorption</subject><subject>Potentiostatic electrocoagulation</subject><issn>0866-7144</issn><issn>2572-8288</issn><issn>2572-8288</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNqFkD1PwzAURS0EElXpyuw_kPL8lTojqoBSKrEAa-TYL9RVGkd2CuTfk6oIRqZ3n3TPHQ4h1wzmDIDffOzsds6BaQDQcEYmXC14prnW52QCOs-zBZPyksxS2o0VpnMhgE1I9-Rb7L1N1LSO-hT6LcY9Tf3BeUy0DpEal0Lseh9aGmpqYsLWWzp-NcY4pu3gYvjyDmk10C702I7d1JtxlWKDto_BBvN-aMxx44pc1KZJOPu5U_J6f_eyXGWb54fH5e0ms1xLyHJTCC1RVg4lMllYhRUou1BGsdxW1jrm0HAOylUq56rQAhUXVmrhnGKFmJL5adfGkFLEuuyi35s4lAzKo7LyqKz8VTYCxQn49A0O_7TLt_Vy9cd-A8qnc3E</recordid><startdate>201812</startdate><enddate>201812</enddate><creator>Binh, Phan Thi</creator><creator>Van Anh, Nguyen Thi</creator><creator>Thuy, Mai Thi Thanh</creator><creator>Xuan, Mai Thi</creator><general>WILEY‐VCH Verlag GmbH & Co. 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Some parameters such as potential, electrolysis time, and initial arsenic concentrations were varied for research in this article. The arsenic concentrations before and after PEC processing were analysed by AAS method. The mass of ferric hydroxide was calculated via Faraday's law. The results showed that the residual arsenic concentration in water samples from initial arsenic concentration until 800 ppb is smaller than that of WHO requirement (10 ppb). The adsorption of arsenic on ferric hydroxide fitted well into pseudo second‐order kinetic equation, where its equilibrium adsorption capacity was linearly depended on the initial adsorption rate with R2 of 0.9864. The Langmuir parameters Nmax and KL were 23.58 mg/g and 1060 L/mg with correlation constant (R2) of 0.827, respectively.</abstract><cop>Weinheim</cop><pub>WILEY‐VCH Verlag GmbH & Co. KGaA</pub><doi>10.1002/vjch.201800080</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | arsenic removal CT3 steel anode kinetic and isotherm adsorption Potentiostatic electrocoagulation |
| title | Kinetics and isotherm studies for adsorption of arsenic on ferric hydroxide by potentiostatic electrocoagulation |
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