Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 29, Issue 54, Pages 81760-81776Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-022-21504-3
Keywords
Tetracycline; OBDCA-sp; Surface modification; Adsorption
Categories
Funding
- Study on Comprehensive Control of Rocky Desertification and Ecological Service Function Improvement in Karst Peaks [2016YFC0502402]
- Fuling Shale Gas Environmental Exploration Technology of National Science and Technology Special Project [2016ZX05060]
- National Natural Science Foundation of China [51709254]
- Youth Innovation Promotion Association, Chinese Academy of Sciences [2020335]
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In this study, second pyrolysis oil-based drill cutting ash (OBDCA-sp) was modified and used as a novel adsorbent to remove tetracycline (TC) from aqueous solutions. The modified OBDCA-sp showed a maximum adsorption capacity when modified with CTAB, and the adsorption process followed the Freundlich model. The experiments also demonstrated the reusability of OBDCA-sp.
In this work, second pyrolysis oil-based drill cutting ash (OBDCA-sp) was modified using NaOH and cetyltrimethylammonium bromide (CTAB), respectively. The modified OBDCA-sp was used as the novel adsorbent for adsorption of tetracycline (TC) in aqueous solutions. The original and modified OBDCA-sp were characterized by SEM, XRD, FTIR, zeta potential analysis, contact angle, and BET. The maximum theoretical adsorption quantity (45 celcius) for TC was calculated as 1.7 mg/g using CTAB-OBDCA-sp as the adsorbent. The adsorption isotherm of TC on OBDCA-sp was fitted well with Freundlich model and the adsorption kinetic was illustrated by pseudo-second-order model. Neutral condition was favorable for the adsorption of TC. The result of regeneration experiment indicated the reusability of OBDCA-sp. The hydrogen bonding was the possible mechanism for TC adsorption. This paper developed the novel surface modification methods of OBDCA-sp and provided an approach for the resource utilization of OBDCA-sp as an environmental functional material.
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