Synthesis of methotrexatum intercalated layered double hydroxides by different methods: Biodegradation process and bioassay explore

Tian, De-Ying; Wang, Yu; Li, Shuping; Li, Xiaodong

doi:10.1016/j.clay.2015.09.007

Cited by 11 publications

(2 citation statements)

References 43 publications

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“…In addition, the profiles exhibit a gradual two-step release behavior, i.e., a fast release stage in the initial hour, followed by a relatively slow period over the next 1–72 h. This trend is consistent with the literature . It is believed that rapid release was related to physical adsorption of SCFAs on LDH surface, and slow release was attributed to the successful extraction of SCFAs intercalated into the interlayer of LDH …”

Section: Resultssupporting

confidence: 89%

“…46 It is believed that rapid release was related to physical adsorption of SCFAs on LDH surface, and slow release was attributed to the successful extraction of SCFAs intercalated into the interlayer of LDH. 47 The release performances of SCFAs-LDH and SCFAs-Na tablets were investigated in a releasing medium system; these are shown in Figure 3. It can be found that the SCFAs-LDH tablets exhibited a gradual two-step release behavior: a fast release stage in the initial 6 h, with an SCFAs release percentage of 33.1%, followed by a relatively slow period over the next 6− 72 h, with an SCFAs release percentage of 47.6%.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Synthesis of Layered Double Hydroxides with Fermentation Liquid of Organic Waste To Extract Short-Chain Fatty Acids as a Biodenitrification Carbon Source

Liu

Zhang

et al. 2017

ACS Sustainable Chem. Eng.

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Short-chain fatty acids (SCFAs) were extracted from artificial and actual anaerobic fermentation liquid of organic waste via the synthesis of layered double hydroxides (LDHs), which was then used as external carbon source in biodenitrification process. Results of X-ray diffraction and Fourier transform infrared analysis indicate that SCFAs were successfully intercalated into LDHs in both artificial system and actual anaerobic fermentation liquid of food waste, with good slow release performance. When using SCFAs-LDH and SCFAs-Na as carbon source with COD/N ratio of 4:1, the nitrate removal efficiency and the utilization efficiency of carbon source were improved from 42.3% and 30.3% to 81.3% and 58.1%, respectively. A dynamic “release-utilization” balance of carbon source was always kept during denitrification process when using SCFAs-LDH, so that higher removal efficiency of nitrate and utilization efficiency of carbon source were obtained simultaneously. This study could help to recover SCFAs from organic wastes efficiently as a denitrification carbon source with slow release performance.

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Section: Resultssupporting

confidence: 89%

Section: ■ Results and Discussionmentioning

confidence: 99%