Uso da cinza da casca do arroz (CCA) obtida da geração de energia térmica como adsorvente de Zn(II) em soluções aquosas Use of rice husk ash (RHA) obtained from thermal energy generation as Zn (II) adsorbent in aqueous solutions
<abstract language="eng">The removal study was conducted using 1.00 g of the rice husk ash (RHA) and 20.0 mL solution with concentrations in the range of 10-1000 mg/L of Zn(II). The influence of contact time, initial metal concentration, agitation and pH of the removal process was in...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Química
2009-01-01
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| Series: | Química Nova |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000600003 |
| _version_ | 1811221280652787712 |
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| author | Thiago Faheina Chaves Zilvanir Fernandes de Queiroz Diana Nara Ribeiro de Sousa José Hélio Saraiva Girão Esiana de Almeida Rodrigues |
| author_facet | Thiago Faheina Chaves Zilvanir Fernandes de Queiroz Diana Nara Ribeiro de Sousa José Hélio Saraiva Girão Esiana de Almeida Rodrigues |
| author_sort | Thiago Faheina Chaves |
| collection | DOAJ |
| description | <abstract language="eng">The removal study was conducted using 1.00 g of the rice husk ash (RHA) and 20.0 mL solution with concentrations in the range of 10-1000 mg/L of Zn(II). The influence of contact time, initial metal concentration, agitation and pH of the removal process was investigated. Superior removals to 95% were obtained at the end of 24 h of contact. The agitation increased in 20% the removal of Zn(II), being needed only 5 min to reach the equilibrium. The adsorption process was studied by the models of isotherms of Langmuir, Freundlich and BET, obtaining results of R L and 1/n for a process favorable of adsorption. BET isotherm best represents the equilibrium adsorption. The results showed that the RHA has the largest capacity and affinity for the removal of Zn(II). |
| first_indexed | 2024-04-12T07:56:38Z |
| format | Article |
| id | doaj.art-93c7736a6a1242af890add5e551e4f57 |
| institution | Directory Open Access Journal |
| issn | 0100-4042 1678-7064 |
| language | English |
| last_indexed | 2024-04-12T07:56:38Z |
| publishDate | 2009-01-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Química Nova |
| spelling | doaj.art-93c7736a6a1242af890add5e551e4f572022-12-22T03:41:28ZengSociedade Brasileira de QuímicaQuímica Nova0100-40421678-70642009-01-013261378138310.1590/S0100-40422009000600003Uso da cinza da casca do arroz (CCA) obtida da geração de energia térmica como adsorvente de Zn(II) em soluções aquosas Use of rice husk ash (RHA) obtained from thermal energy generation as Zn (II) adsorbent in aqueous solutionsThiago Faheina ChavesZilvanir Fernandes de QueirozDiana Nara Ribeiro de SousaJosé Hélio Saraiva GirãoEsiana de Almeida Rodrigues<abstract language="eng">The removal study was conducted using 1.00 g of the rice husk ash (RHA) and 20.0 mL solution with concentrations in the range of 10-1000 mg/L of Zn(II). The influence of contact time, initial metal concentration, agitation and pH of the removal process was investigated. Superior removals to 95% were obtained at the end of 24 h of contact. The agitation increased in 20% the removal of Zn(II), being needed only 5 min to reach the equilibrium. The adsorption process was studied by the models of isotherms of Langmuir, Freundlich and BET, obtaining results of R L and 1/n for a process favorable of adsorption. BET isotherm best represents the equilibrium adsorption. The results showed that the RHA has the largest capacity and affinity for the removal of Zn(II).http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000600003rice husk ashremovalZn (II) |
| spellingShingle | Thiago Faheina Chaves Zilvanir Fernandes de Queiroz Diana Nara Ribeiro de Sousa José Hélio Saraiva Girão Esiana de Almeida Rodrigues Uso da cinza da casca do arroz (CCA) obtida da geração de energia térmica como adsorvente de Zn(II) em soluções aquosas Use of rice husk ash (RHA) obtained from thermal energy generation as Zn (II) adsorbent in aqueous solutions Química Nova rice husk ash removal Zn (II) |
| title | Uso da cinza da casca do arroz (CCA) obtida da geração de energia térmica como adsorvente de Zn(II) em soluções aquosas Use of rice husk ash (RHA) obtained from thermal energy generation as Zn (II) adsorbent in aqueous solutions |
| title_full | Uso da cinza da casca do arroz (CCA) obtida da geração de energia térmica como adsorvente de Zn(II) em soluções aquosas Use of rice husk ash (RHA) obtained from thermal energy generation as Zn (II) adsorbent in aqueous solutions |
| title_fullStr | Uso da cinza da casca do arroz (CCA) obtida da geração de energia térmica como adsorvente de Zn(II) em soluções aquosas Use of rice husk ash (RHA) obtained from thermal energy generation as Zn (II) adsorbent in aqueous solutions |
| title_full_unstemmed | Uso da cinza da casca do arroz (CCA) obtida da geração de energia térmica como adsorvente de Zn(II) em soluções aquosas Use of rice husk ash (RHA) obtained from thermal energy generation as Zn (II) adsorbent in aqueous solutions |
| title_short | Uso da cinza da casca do arroz (CCA) obtida da geração de energia térmica como adsorvente de Zn(II) em soluções aquosas Use of rice husk ash (RHA) obtained from thermal energy generation as Zn (II) adsorbent in aqueous solutions |
| title_sort | uso da cinza da casca do arroz cca obtida da geracao de energia termica como adsorvente de zn ii em solucoes aquosas use of rice husk ash rha obtained from thermal energy generation as zn ii adsorbent in aqueous solutions |
| topic | rice husk ash removal Zn (II) |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000600003 |
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