2019
DOI: 10.1016/j.cej.2019.05.002
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Enhanced sludge dewatering via homogeneous and heterogeneous Fenton reactions initiated by Fe-rich biochar derived from sludge

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Cited by 115 publications
(17 citation statements)
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“…Thus, the digested sludge could be treated by pyrolysis or hydrothermal carbonization, generating Fe- or Al-rich biochar. Biochar is an effective material for removing heavy metals from wastewater and activating H 2 O 2 to initiate the Fenton process to degrade pollutants or improve sludge dewaterability. , The addition of FeCl 3 to improve sludge biodegradability is currently an immature technology. Typically, Fe 3+ , coagulant, is widely used to enhance primary sedimentation in WWTPs, generating sludge containing iron .…”
Section: Resultsmentioning
confidence: 99%
“…Thus, the digested sludge could be treated by pyrolysis or hydrothermal carbonization, generating Fe- or Al-rich biochar. Biochar is an effective material for removing heavy metals from wastewater and activating H 2 O 2 to initiate the Fenton process to degrade pollutants or improve sludge dewaterability. , The addition of FeCl 3 to improve sludge biodegradability is currently an immature technology. Typically, Fe 3+ , coagulant, is widely used to enhance primary sedimentation in WWTPs, generating sludge containing iron .…”
Section: Resultsmentioning
confidence: 99%
“…For the traditional homogeneous Fenton reaction, there are still some inherent shortcomings: iron-containing sludge formation and unrecoverable catalyst. 15 In order to overcome the disadvantages of homogeneous Fenton reaction, solid heterogeneous Fenton-like catalyst is used to activate hydrogen peroxide. 16 At present, the most common heterogeneous Fenton-like catalyst is iron oxide, but the specic surface area of iron oxide is low, and the exposed active sites are limited, so its catalytic activity is low.…”
Section: Introductionmentioning
confidence: 99%
“…Among them, Fenton and lime together adjusted the sludge, which can increase the pH while maintaining a good dehydration effect. Tao et al further studied the effect of combining iron-rich biochar with H 2 O 2 on sludge dewatering ability [ 28 ]. The iron contained in biochar combines with H 2 O 2 to accelerate the Fenton reaction, and red mud is added as a framework material during the reaction.…”
Section: Application Of Hydrogen Peroxide In Sludge Dewateringmentioning
confidence: 99%