Adsorption of iron and copper with crab biochar ...
The growing human population causes increasing environmental issues from seafood waste. Biochar production through pyrolysis can reduce waste and provide a neutralizing adsorbent to treat acid mine drainage. This study aimed to determine if slow versus fast pyrolysis alters the char’s characteristic...
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| Format: | Text |
| Language: | English |
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Memorial University of Newfoundland
2023
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| Online Access: | https://dx.doi.org/10.48336/nzjz-nr27 https://research.library.mun.ca/15915/ |
| Summary: | The growing human population causes increasing environmental issues from seafood waste. Biochar production through pyrolysis can reduce waste and provide a neutralizing adsorbent to treat acid mine drainage. This study aimed to determine if slow versus fast pyrolysis alters the char’s characteristics and if adding iron to copper containing solution affects copper’s adsorption rate. Snow crab (Chionoecetes Opilio) underwent slow pyrolysis at 500°C producing a porous char with a 55 wt% yield, a specific surface area of 14.73m²/g, and an average pore size of 21.5nm. Elemental analysis indicated a carbon content of 22.69 wt%, 1.24 wt% hydrogen, and 2.72 wt% nitrogen in the char, while proximate analysis determined 12 wt% volatiles, 57 wt% ash, and approximately 27 wt% calcium carbonate. XRD suggested amorphous calcium carbonate and calcite. Slow pyrolysis char contained 1.8 times more volatiles than fast pyrolysis. Batch adsorption experiments included a dosage of 5g/L with iron (II) sulphate and copper (II) ... |
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