New insight on the combined effects of hydrothermal treatment and FeSO4/Ca(ClO)2 oxidation for sludge dewaterability improvement: From experimental to theoretical investigation

Chen, Dandan; Dou, Yuhao; Tang, Qin; Huang, Yaji; Song, Min; Zhou, Jun; Fu, Lichun

doi:10.1016/j.fuproc.2019.106196

Cited by 33 publications

(24 citation statements)

References 54 publications

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“…b Yield (%) = (mass of each product/mass of feedstock) × 100, dry basis. -131 --a db = dry basis; TS = total solids of sludge feedstock; VM = volatile matter; FC = fixed carbon; HHV = higher heating value; references (Acelas et al, 2014;Afif et al, 2011;Ahn et al, 2020;Alatalo et al, 2013;Ali Shah et al, 2021;Amrullah and Matsumura, 2018;Anastasakis et al, 2018;Aragón-Briceño et al, 2017Becker et al, 2019;Berge et al, 2011;Bhatt et al, 2018;Biller et al, 2018;Breulmann et al, 2017;Brookman et al, 2018;Catallo and Comeaux, 2008;Chang et al, 2021;D. Chen et al, 2020;Chen et al, 2019Chen et al, , 2013bChen et al, , 2013aChu et al, 2020;Conti et al, 2020;Couto et al, 2018;  Results showed that WHSV between 1.5 and 3.1 hr -1 had no noticeable effect on co-HTG;  Co-HTG of MS with corn starch had slightly more H 2 and less CH 4 in gas composition than HTG of corn starch only;  Co-HTG resulted in less TOC yield than HTG of corn starch only.…”

Section: Declaration Of Competing Interestmentioning

confidence: 99%

Hydrochar derived from municipal sludge through hydrothermal processing: A critical review on its formation, characterization, and valorization

et al. 2021

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Section: Declaration Of Competing Interestmentioning

confidence: 99%

Hydrochar derived from municipal sludge through hydrothermal processing: A critical review on its formation, characterization, and valorization

et al. 2021

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“…Three representative model molecules in EPS of sludge, that is, dextran, poly-gamma-glutamate, and poly- l -lysine, were taken into account in analyzing the intermolecular interactions with water. The structure of the three model molecules were described in our previous work . All the EPS···water complex models constructed in this work are shown in Figure .…”

Section: Methodsmentioning

confidence: 99%

“…However, its effect is limited. Therefore, based on our previous work, a combined method of hydrothermal and FeSO 4 /Ca(ClO) 2 oxidation was developed to improve sludge dewaterability. The results showed that the combined method has a pretty high effect for improving sludge dewaterability.…”

Section: Introductionmentioning

confidence: 99%

New Insight on the Combined Effects of Hydrothermal Treatment and FeSO₄/Ca(ClO)₂Oxidation for Sludge Dewaterability Improvement: Moisture Distribution and Noncovalent Interaction Calculation

et al. 2020

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A combination of hydrothermal treatment and FeSO4/Ca(ClO)2 oxidation was developed in our previous work and was proved to be significantly useful for improving the sludge dewaterability. The dewatering mechanism of the sludge after the combined treatment of hydrothermal treatment and FeSO4·7H2O/Ca(ClO)2 was obtained for the first time based on the moisture distribution analysis. Moreover, the noncovalent interaction between the hydrophilic sites of sludge EPS in sludge and water molecules was studied for the first time by using density functional theory. The electrostatic potentials of three representative EPS molecules, that is, dextran, poly-gamma-glutamate, and poly-l-lysine, were calculated and analyzed. AIM and RDG of the representative EPS·water complex models were calculated to study the noncovalent interaction mechanism. The moisture distribution and noncovalent interactions analyzed in this paper will provide information for improving sludge dewatering performance.

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“…D w was calculated by Eq. ( 1) (Dandan et al, 2020). CST was determined by using a TRITON Type 304M CST-meter.…”

Section: Conditioning Processmentioning

confidence: 99%

Novel conditioner for efficient dewaterability and modification of oily sludge with high water content

Liu

Song

2021

Environ Sci Pollut Res

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The Oily sludge with high water content (OS) was dewatered, modi ed and converted into solid fuel by a novel chemical conditioner . The effect of OSO-101 dosage on the dewaterability of OS was studied, showing that OSO-101 dosage of 15% (wt.) could achieve the best dewaterability e ciency of OS (98.18%). Meanwhile, compared with some conventional conditioners, OSO-101 developed by our team was more effective in improving OS dewaterability e ciency. And OSO-101 may have free radical reaction, polar reaction and redox reaction with petroleum hydrocarbons in OS, thereby polymerizing and forming condensed solid structures. The calori c value change of OS after conditioning, heavy metal content and dioxins content of y ash leached from incinerated product were measured for resource analysis and environmental assessment. Results showed that the resultant OS fuel blocks had extremely low content of heavy metals, dioxins and other toxic and hazardous substances leached from y ash, thereby no secondary treatment and fully meeting environmental protection emission standards.Additionally, OSO-101 had certain economic rationality, and could effectively recover the calori c value contained in OS. This research is expected to provide new insights for e cient dewaterability and modi cation of OS, as well as subsequent resource utilization and harmless treatment, bringing potential environmental and economic bene ts. Highlights(1) OS was dewatered, conditioned and converted into solid fuel by OSO-101.(2) The dewaterability e ciency of OS was 98.18% with the addition of 15 wt.% OSO-101.(3) OSO-101 can increase calori c value of OS and improve feasibility for fuel utilization.

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New insight on the combined effects of hydrothermal treatment and FeSO4/Ca(ClO)2 oxidation for sludge dewaterability improvement: From experimental to theoretical investigation

Cited by 33 publications

References 54 publications

Hydrochar derived from municipal sludge through hydrothermal processing: A critical review on its formation, characterization, and valorization

Hydrochar derived from municipal sludge through hydrothermal processing: A critical review on its formation, characterization, and valorization

New Insight on the Combined Effects of Hydrothermal Treatment and FeSO₄/Ca(ClO)₂Oxidation for Sludge Dewaterability Improvement: Moisture Distribution and Noncovalent Interaction Calculation

Novel conditioner for efficient dewaterability and modification of oily sludge with high water content

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New insight on the combined effects of hydrothermal treatment and FeSO4/Ca(ClO)2 oxidation for sludge dewaterability improvement: From experimental to theoretical investigation

Cited by 33 publications

References 54 publications

Hydrochar derived from municipal sludge through hydrothermal processing: A critical review on its formation, characterization, and valorization

Hydrochar derived from municipal sludge through hydrothermal processing: A critical review on its formation, characterization, and valorization

New Insight on the Combined Effects of Hydrothermal Treatment and FeSO4/Ca(ClO)2Oxidation for Sludge Dewaterability Improvement: Moisture Distribution and Noncovalent Interaction Calculation

Novel conditioner for efficient dewaterability and modification of oily sludge with high water content

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Product

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New Insight on the Combined Effects of Hydrothermal Treatment and FeSO₄/Ca(ClO)₂Oxidation for Sludge Dewaterability Improvement: Moisture Distribution and Noncovalent Interaction Calculation