2015
DOI: 10.1016/j.molliq.2015.03.018
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Adsorptive remediation of hexavalent chromium from synthetic wastewater by a natural and ZnCl2 activated Sterculia guttata shell

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Cited by 143 publications
(36 citation statements)
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References 56 publications
(43 reference statements)
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“…There was a significant difference observed between coal 1:4 compared to charcoal 1:3 in Figures 6 and 7, since the former showed higher intensity of diffraction peaks suggesting that zinc chloride activation induced bulk phase changes in it, this coincides with the studies carried out by Rangabhashiyam & Selvaraju in preparing activated carbons from Sterculia guttata impregnated with ZnCl 2 (24). Furthermore, according to Yang and companions the weak diffraction peak indicates that the grain size was little and the grain shape was not complete (25).…”
Section: X-ray Diffraction Analysis (Drx) Of Carbonssupporting
confidence: 84%
“…There was a significant difference observed between coal 1:4 compared to charcoal 1:3 in Figures 6 and 7, since the former showed higher intensity of diffraction peaks suggesting that zinc chloride activation induced bulk phase changes in it, this coincides with the studies carried out by Rangabhashiyam & Selvaraju in preparing activated carbons from Sterculia guttata impregnated with ZnCl 2 (24). Furthermore, according to Yang and companions the weak diffraction peak indicates that the grain size was little and the grain shape was not complete (25).…”
Section: X-ray Diffraction Analysis (Drx) Of Carbonssupporting
confidence: 84%
“…Además, se estableció que el cambio del trup es proporcional a la altura del lecho, lo cual significa que se adsorbe mayor cantidad de soluto por gramo de adsorbente, lo que es coherente con los porcentajes de remoción presentados. Con base en este desempeño, es posible afirmar que el proceso de adsorción de iones de Hg (II), sobre un lecho de cacao, es dependiente de la altura, ya que el incremento en la altura del lecho también significa un aumento el área superficial disponible y el tiempo de contacto entre los iones de Hg y el sorbente [13,15].…”
Section: Discussionunclassified
“…Adicionalmente, en la remoción de iones en sistema batch y continuo, se han usado como adsorbente carbones activados a partir de agujas de pino, cáscara de Swietenia mahagoni , nanotubos de carbono de paredes múltiples con grupos amino y tiolados, residuos de cacao, bagazo de palma, cáscaras de ñame, entre otros, demostrando el potencial de las biomasas lignoceluló-sicas en la remediación de aguas [4] [12][13][14][15]. En contexto, el presente trabajo evaluó el desempeño de la densidad de empaque de biomasa residual de cáscara de cacao como adsorbente de Hg (II), disuelto en solución acuosa, en un sistema continuo de lecho fijo determinando el efecto de la altura del lecho en la remoción de este contaminante.…”
Section: Introductionunclassified
“…and hexavalent chromium in the form of HCrO 4 − The conventional treatment methods for the removal of Cr(VI) include chemical precipitation, flotation, reduction, ion exchange, membrane separation, reverse osmosis, foam separation, evaporation, etc. However, these treatment methods are expensive and ineffective at a very low metal concentration in the wastewater (Pranab 2009;Rangabhashiyam and Selvaraju 2015a;Rangabhashiyam et al 2014). Hence, a simple, competent, inexpensive, and eco-friendly technique is highly required for the treatment of industrial wastewater.…”
Section: Introductionmentioning
confidence: 99%