Facilitating the natural semi-drying of oily sludge by changing the form of water.
Reducing the water content of oily sludge is essential for the disposal of it. Despite conditioning and solid-liquid separation, the water content of oily sludge generally exceeds 65%. A large amount of this water exists in the form of emulsified and bound water, reducing the efficiency of water rem...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2021-01-01
|
| Series: | PLoS ONE |
| Online Access: | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0245430&type=printable |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850241088166559744 |
|---|---|
| author | Yucheng Liu Maoren Wang Mingyan Chen Meng Zhu Maoqi Liao |
| author_facet | Yucheng Liu Maoren Wang Mingyan Chen Meng Zhu Maoqi Liao |
| author_sort | Yucheng Liu |
| collection | DOAJ |
| description | Reducing the water content of oily sludge is essential for the disposal of it. Despite conditioning and solid-liquid separation, the water content of oily sludge generally exceeds 65%. A large amount of this water exists in the form of emulsified and bound water, reducing the efficiency of water removal during the natural semi-drying process of oily sludge. To shorten the time required for natural semi-drying, this study applied an orthogonal test to screen an oily sludge modified material (OSM). The effect and mechanism of OSM on the natural semi-drying of oily sludge were studied using a thermal gravimetric analyzer (TGA), scanning electron microscope (SEM), surface tension measurement, and microscopic observations. The results show that when the ambient temperature exceeded 10°C, the OSM increased in mass by 8-10%, and the time required for the natural semi-drying of oily sludge was shortened from 15 days to less than 5 days. OSM can rupture the emulsion, reduce the surface tension, convert the emulsion and bound water in the oily sludge into free water, and accelerate the rate of water migration, diffusion, and natural evaporation from the inside of the oily sludge to the surface and air. The research results show that changing the form of water can speed up the drying of oily sludge, creating positive economic benefits in the process of oily sludge reduction and recycling. |
| format | Article |
| id | doaj-art-6be5cfafaaba42f09105d64db456c115 |
| institution | OA Journals |
| issn | 1932-6203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj-art-6be5cfafaaba42f09105d64db456c1152025-08-20T02:00:42ZengPublic Library of Science (PLoS)PLoS ONE1932-62032021-01-01161e024543010.1371/journal.pone.0245430Facilitating the natural semi-drying of oily sludge by changing the form of water.Yucheng LiuMaoren WangMingyan ChenMeng ZhuMaoqi LiaoReducing the water content of oily sludge is essential for the disposal of it. Despite conditioning and solid-liquid separation, the water content of oily sludge generally exceeds 65%. A large amount of this water exists in the form of emulsified and bound water, reducing the efficiency of water removal during the natural semi-drying process of oily sludge. To shorten the time required for natural semi-drying, this study applied an orthogonal test to screen an oily sludge modified material (OSM). The effect and mechanism of OSM on the natural semi-drying of oily sludge were studied using a thermal gravimetric analyzer (TGA), scanning electron microscope (SEM), surface tension measurement, and microscopic observations. The results show that when the ambient temperature exceeded 10°C, the OSM increased in mass by 8-10%, and the time required for the natural semi-drying of oily sludge was shortened from 15 days to less than 5 days. OSM can rupture the emulsion, reduce the surface tension, convert the emulsion and bound water in the oily sludge into free water, and accelerate the rate of water migration, diffusion, and natural evaporation from the inside of the oily sludge to the surface and air. The research results show that changing the form of water can speed up the drying of oily sludge, creating positive economic benefits in the process of oily sludge reduction and recycling.https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0245430&type=printable |
| spellingShingle | Yucheng Liu Maoren Wang Mingyan Chen Meng Zhu Maoqi Liao Facilitating the natural semi-drying of oily sludge by changing the form of water. PLoS ONE |
| title | Facilitating the natural semi-drying of oily sludge by changing the form of water. |
| title_full | Facilitating the natural semi-drying of oily sludge by changing the form of water. |
| title_fullStr | Facilitating the natural semi-drying of oily sludge by changing the form of water. |
| title_full_unstemmed | Facilitating the natural semi-drying of oily sludge by changing the form of water. |
| title_short | Facilitating the natural semi-drying of oily sludge by changing the form of water. |
| title_sort | facilitating the natural semi drying of oily sludge by changing the form of water |
| url | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0245430&type=printable |
| work_keys_str_mv | AT yuchengliu facilitatingthenaturalsemidryingofoilysludgebychangingtheformofwater AT maorenwang facilitatingthenaturalsemidryingofoilysludgebychangingtheformofwater AT mingyanchen facilitatingthenaturalsemidryingofoilysludgebychangingtheformofwater AT mengzhu facilitatingthenaturalsemidryingofoilysludgebychangingtheformofwater AT maoqiliao facilitatingthenaturalsemidryingofoilysludgebychangingtheformofwater |