| Title |
Effect of pH on hexavalent and total chromium removal from aqueous solutions by avocado shell using batch and continuous systems
|
|---|---|
| Published in |
Environmental Science and Pollution Research, September 2017
|
| DOI | 10.1007/s11356-017-0248-z |
| Pubmed ID | |
| Authors |
Erick Aranda-García, Eliseo Cristiani-Urbina |
| Abstract |
Solution pH appears to be the most important regulator of the biosorptive removal of chromium ions from aqueous solutions. This work presents a kinetic study of the effects of solution pH on Cr(VI) and total chromium removal from aqueous solution by Hass avocado shell (HAS) in batch and continuous packed bed column systems. Different Cr(VI) and total chromium removal performances of HAS were obtained in pH-shift batch, pH-controlled batch, and continuous systems. These results emphasize the great importance of determining the most appropriate pH for Cr(VI) and total chromium removal, considering the operational mode of the proposed large-scale treatment system. Total chromium biosorption batch kinetics was well described by the Elovich model, whereas in the continuous system, the fitness of the kinetic models to the experimental data was pH dependent. X-ray photoelectron spectroscopy and kinetic studies clearly indicated that the reaction mechanism of Cr(VI) with HAS was the reductive biotransformation of Cr(VI) to Cr(III), which was partially released to the aqueous solution and partially biosorbed onto HAS. |
X Demographics
The data shown below were collected from the profile of 1 X user who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 1 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 1 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 44 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 44 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 4 | 9% |
| Student > Ph. D. Student | 4 | 9% |
| Student > Doctoral Student | 4 | 9% |
| Student > Bachelor | 3 | 7% |
| Lecturer | 3 | 7% |
| Other | 10 | 23% |
| Unknown | 16 | 36% |
| Readers by discipline | Count | As % |
|---|---|---|
| Environmental Science | 8 | 18% |
| Chemical Engineering | 4 | 9% |
| Engineering | 4 | 9% |
| Chemistry | 2 | 5% |
| Pharmacology, Toxicology and Pharmaceutical Science | 1 | 2% |
| Other | 5 | 11% |
| Unknown | 20 | 45% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 21 March 2018.
All research outputs
#16,223,992
of 23,911,072 outputs
Outputs from Environmental Science and Pollution Research
#3,738
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Outputs of similar age
#205,576
of 323,985 outputs
Outputs of similar age from Environmental Science and Pollution Research
#103
of 259 outputs
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