| Title |
Characteristics and mechanisms of nickel adsorption on biochars produced from wheat straw pellets and rice husk
|
|---|---|
| Published in |
Environmental Science and Pollution Research, March 2017
|
| DOI | 10.1007/s11356-017-8847-2 |
| Pubmed ID | |
| Authors |
Zhengtao Shen, Yunhui Zhang, Oliver McMillan, Fei Jin, Abir Al-Tabbaa |
| Abstract |
The adsorption characteristics and mechanisms of Ni(2+) on four-standard biochars produced from wheat straw pellets (WSP550, WSP700) and rice husk (RH550, RH700) at 550 and 700 °C, respectively, were investigated. The kinetic results show that the adsorption of Ni(2+) on the biochars reached an equilibrium within 5 min. The increase of the solid to liquid ratio resulted in an increase of Ni(2+) removal percentage but a decrease of the adsorbed amount of Ni(2+) per weight unit of biochar. The Ni(2+) removal percentage increased with the increasing of initial solution pH values at the range of 2-4, was relatively constant at the pH range of 4-8, and significantly increased to ≥98% at pH 9 and stayed constantly at the pH range of 9-10. The calculated maximum adsorption capacities of Ni(2+) for the biochars follow the order of WSP700 > WSP550 > RH700 > RH550. Both cation exchange capacity and pH of biochar can be a good indicator of the maximum adsorption capacity for Ni(2+) showing a positively linear and exponential relationship, respectively. This study also suggests that a carefully controlled standardised production procedure can make it reliable to compare the adsorption capacities between different biochars and investigate the mechanisms involved. |
X Demographics
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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 191 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 191 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 32 | 17% |
| Researcher | 22 | 12% |
| Student > Master | 19 | 10% |
| Student > Bachelor | 11 | 6% |
| Lecturer | 9 | 5% |
| Other | 28 | 15% |
| Unknown | 70 | 37% |
| Readers by discipline | Count | As % |
|---|---|---|
| Environmental Science | 31 | 16% |
| Agricultural and Biological Sciences | 20 | 10% |
| Chemical Engineering | 20 | 10% |
| Engineering | 20 | 10% |
| Chemistry | 7 | 4% |
| Other | 13 | 7% |
| Unknown | 80 | 42% |
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 02 April 2017.
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#21,420,714
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#7,000
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Outputs of similar age from Environmental Science and Pollution Research
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