Sorption of tetracycline on biochar derived from rice straw under different temperatures.

Biochars produced from the pyrolysis of waste biomass under limited oxygen conditions could serve as adsorbents in environmental remediation processes. Biochar samples derived from rice straw that were pyrolyzed at 300 (R300), 500 (R500) and 700°C (R700) were used as adsorbents to remove tetracyclin...

Full description

Bibliographic Details
Main Authors: Hua Wang, Yixuan Chu, Chengran Fang, Fang Huang, Yali Song, Xiangdong Xue
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2017-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC5549735?pdf=render
id doaj-b99347f6349c4deb9efe71fc41bf5ef3
record_format Article
spelling doaj-b99347f6349c4deb9efe71fc41bf5ef32020-11-25T02:32:11ZengPublic Library of Science (PLoS)PLoS ONE1932-62032017-01-01128e018277610.1371/journal.pone.0182776Sorption of tetracycline on biochar derived from rice straw under different temperatures.Hua WangYixuan ChuChengran FangFang HuangYali SongXiangdong XueBiochars produced from the pyrolysis of waste biomass under limited oxygen conditions could serve as adsorbents in environmental remediation processes. Biochar samples derived from rice straw that were pyrolyzed at 300 (R300), 500 (R500) and 700°C (R700) were used as adsorbents to remove tetracycline from an aqueous solution. Both the Langmuir and Freundlich models fitted the adsorption data well (R2 > 0.919). The adsorption capacity increased with pyrolysis temperature. The R500 and R700 samples exhibited relative high removal efficiencies across a range of initial tetracycline concentrations (0.5mg/L-32mg/L) with the maximum (92.8%-96.7%) found for adsorption on R700 at 35°C. The relatively high surface area of the R700 sample and π-π electron-donor acceptor contributed to the high adsorption capacities. A thermodynamic analysis indicated that the tetracycline adsorption process was spontaneous and endothermic. The pH of solution was also found to influence the adsorption processes; the maximum adsorption capacity occurred at a pH of 5.5. These experimental results highlight that biochar derived from rice straw is a promising candidate for low-cost removal of tetracycline from water.http://europepmc.org/articles/PMC5549735?pdf=render
collection DOAJ
language English
format Article
sources DOAJ
author Hua Wang
Yixuan Chu
Chengran Fang
Fang Huang
Yali Song
Xiangdong Xue
spellingShingle Hua Wang
Yixuan Chu
Chengran Fang
Fang Huang
Yali Song
Xiangdong Xue
Sorption of tetracycline on biochar derived from rice straw under different temperatures.
PLoS ONE
author_facet Hua Wang
Yixuan Chu
Chengran Fang
Fang Huang
Yali Song
Xiangdong Xue
author_sort Hua Wang
title Sorption of tetracycline on biochar derived from rice straw under different temperatures.
title_short Sorption of tetracycline on biochar derived from rice straw under different temperatures.
title_full Sorption of tetracycline on biochar derived from rice straw under different temperatures.
title_fullStr Sorption of tetracycline on biochar derived from rice straw under different temperatures.
title_full_unstemmed Sorption of tetracycline on biochar derived from rice straw under different temperatures.
title_sort sorption of tetracycline on biochar derived from rice straw under different temperatures.
publisher Public Library of Science (PLoS)
series PLoS ONE
issn 1932-6203
publishDate 2017-01-01
description Biochars produced from the pyrolysis of waste biomass under limited oxygen conditions could serve as adsorbents in environmental remediation processes. Biochar samples derived from rice straw that were pyrolyzed at 300 (R300), 500 (R500) and 700°C (R700) were used as adsorbents to remove tetracycline from an aqueous solution. Both the Langmuir and Freundlich models fitted the adsorption data well (R2 > 0.919). The adsorption capacity increased with pyrolysis temperature. The R500 and R700 samples exhibited relative high removal efficiencies across a range of initial tetracycline concentrations (0.5mg/L-32mg/L) with the maximum (92.8%-96.7%) found for adsorption on R700 at 35°C. The relatively high surface area of the R700 sample and π-π electron-donor acceptor contributed to the high adsorption capacities. A thermodynamic analysis indicated that the tetracycline adsorption process was spontaneous and endothermic. The pH of solution was also found to influence the adsorption processes; the maximum adsorption capacity occurred at a pH of 5.5. These experimental results highlight that biochar derived from rice straw is a promising candidate for low-cost removal of tetracycline from water.
url http://europepmc.org/articles/PMC5549735?pdf=render
work_keys_str_mv AT huawang sorptionoftetracyclineonbiocharderivedfromricestrawunderdifferenttemperatures
AT yixuanchu sorptionoftetracyclineonbiocharderivedfromricestrawunderdifferenttemperatures
AT chengranfang sorptionoftetracyclineonbiocharderivedfromricestrawunderdifferenttemperatures
AT fanghuang sorptionoftetracyclineonbiocharderivedfromricestrawunderdifferenttemperatures
AT yalisong sorptionoftetracyclineonbiocharderivedfromricestrawunderdifferenttemperatures
AT xiangdongxue sorptionoftetracyclineonbiocharderivedfromricestrawunderdifferenttemperatures
_version_ 1724820889720061952