Matches in SemOpenAlex for { <https://semopenalex.org/work/W2800260072> ?p ?o ?g. }
- W2800260072 endingPage "242" @default.
- W2800260072 startingPage "232" @default.
- W2800260072 abstract "Fenton's reagent has been widely used to enhance sludge dewaterability. However, drawbacks associated with hydrogen peroxide (H2O2) in Fenton's reagents exist, since it is a hazardous chemical and shows carcinogenicity, explosivity, instability, and corrosivity. Moreover, initial acidification and subsequent neutralization are needed as optimal conditions for homogeneous Fenton conditioning and final filtrate discharge. In this study, a Fenton-like process for the enhanced dewaterability of waste activated sludge with in-situ generation of H2O2 and without extra pH adjustment was firstly proposed, namely citric acid (CA)-assisted oxygen activation in an air/nano zero-valent iron (nZVI) system and chemical re-coagulation with polydiallyldimethylammonium chloride (PDMDAAC). Using the response surface methodology (RSM), the optimal doses of CA, nZVI, and PDMDAAC were determined to be 13, 33, and 9 mg g-1 dry solids (DS), respectively. This composite conditioner showed a good dewatering capability compared with the raw sludge, e.g. the capillary suction time decreased from 130.0 to 9.5 s. The enhanced sludge dewaterability was further confirmed by laboratory-scale diaphragm filter press dewatering tests, which produced a lower cake moisture content compared with the raw sludge, and the final pH of the filtrate was close to neutrality. The citric acid promoted the production of H2O2 and Fe(II)/Fe(III) species, the degradation of protein in tightly-bound extracellular polymeric substances, and the decomposition of protein-N in the solid phase of sludge, resulting a greater conversion of bound water to free water. The results of electron spin resonance indicated that the hydroxyl radicals were mainly responsible for the decomposition of proteinaceous compounds. The subsequent chemical re-coagulation with PDMDAAC can make the zeta potential of sludge samples less negative, reduce the repulsive electrostatic interactions, and agglomerate the smaller particles into larger aggregates, thus enhancing sludge dewaterability." @default.
- W2800260072 created "2018-05-17" @default.
- W2800260072 creator A5003917533 @default.
- W2800260072 creator A5004324071 @default.
- W2800260072 creator A5015939868 @default.
- W2800260072 creator A5025657049 @default.
- W2800260072 creator A5064743384 @default.
- W2800260072 creator A5075828302 @default.
- W2800260072 creator A5088049455 @default.
- W2800260072 creator A5088580308 @default.
- W2800260072 creator A5090366405 @default.
- W2800260072 date "2018-09-01" @default.
- W2800260072 modified "2023-10-15" @default.
- W2800260072 title "Citric acid assisted Fenton-like process for enhanced dewaterability of waste activated sludge with in-situ generation of hydrogen peroxide" @default.
- W2800260072 cites W1002821332 @default.
- W2800260072 cites W1968834637 @default.
- W2800260072 cites W1972564600 @default.
- W2800260072 cites W1980509182 @default.
- W2800260072 cites W1982986075 @default.
- W2800260072 cites W1983357971 @default.
- W2800260072 cites W1995691644 @default.
- W2800260072 cites W1995808366 @default.
- W2800260072 cites W2007705974 @default.
- W2800260072 cites W2007773937 @default.
- W2800260072 cites W2008284278 @default.
- W2800260072 cites W2024972827 @default.
- W2800260072 cites W2037014840 @default.
- W2800260072 cites W2049272618 @default.
- W2800260072 cites W2052378782 @default.
- W2800260072 cites W2059018786 @default.
- W2800260072 cites W2060999548 @default.
- W2800260072 cites W2066162679 @default.
- W2800260072 cites W2078719080 @default.
- W2800260072 cites W2078766178 @default.
- W2800260072 cites W2084092819 @default.
- W2800260072 cites W2094407235 @default.
- W2800260072 cites W2105732889 @default.
- W2800260072 cites W2201784610 @default.
- W2800260072 cites W2217097116 @default.
- W2800260072 cites W2270597314 @default.
- W2800260072 cites W2272979899 @default.
- W2800260072 cites W2293619502 @default.
- W2800260072 cites W2415363010 @default.
- W2800260072 cites W2419176034 @default.
- W2800260072 cites W2462526157 @default.
- W2800260072 cites W2528957760 @default.
- W2800260072 cites W2549560656 @default.
- W2800260072 cites W2603280822 @default.
- W2800260072 cites W2623906508 @default.
- W2800260072 cites W2625302127 @default.
- W2800260072 cites W2669679103 @default.
- W2800260072 cites W2726242438 @default.
- W2800260072 cites W2738188205 @default.
- W2800260072 cites W4253937906 @default.
- W2800260072 doi "https://doi.org/10.1016/j.watres.2018.04.051" @default.
- W2800260072 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29715647" @default.
- W2800260072 hasPublicationYear "2018" @default.
- W2800260072 type Work @default.
- W2800260072 sameAs 2800260072 @default.
- W2800260072 citedByCount "118" @default.
- W2800260072 countsByYear W28002600722018 @default.
- W2800260072 countsByYear W28002600722019 @default.
- W2800260072 countsByYear W28002600722020 @default.
- W2800260072 countsByYear W28002600722021 @default.
- W2800260072 countsByYear W28002600722022 @default.
- W2800260072 countsByYear W28002600722023 @default.
- W2800260072 crossrefType "journal-article" @default.
- W2800260072 hasAuthorship W2800260072A5003917533 @default.
- W2800260072 hasAuthorship W2800260072A5004324071 @default.
- W2800260072 hasAuthorship W2800260072A5015939868 @default.
- W2800260072 hasAuthorship W2800260072A5025657049 @default.
- W2800260072 hasAuthorship W2800260072A5064743384 @default.
- W2800260072 hasAuthorship W2800260072A5075828302 @default.
- W2800260072 hasAuthorship W2800260072A5088049455 @default.
- W2800260072 hasAuthorship W2800260072A5088580308 @default.
- W2800260072 hasAuthorship W2800260072A5090366405 @default.
- W2800260072 hasConcept C127413603 @default.
- W2800260072 hasConcept C129968341 @default.
- W2800260072 hasConcept C178790620 @default.
- W2800260072 hasConcept C185592680 @default.
- W2800260072 hasConcept C187320778 @default.
- W2800260072 hasConcept C2777730692 @default.
- W2800260072 hasConcept C2779032678 @default.
- W2800260072 hasConcept C2780616974 @default.
- W2800260072 hasConcept C2993040405 @default.
- W2800260072 hasConcept C40875361 @default.
- W2800260072 hasConcept C42360764 @default.
- W2800260072 hasConcept C523546767 @default.
- W2800260072 hasConcept C528095902 @default.
- W2800260072 hasConcept C533411734 @default.
- W2800260072 hasConcept C54355233 @default.
- W2800260072 hasConcept C548081761 @default.
- W2800260072 hasConcept C58123911 @default.
- W2800260072 hasConcept C85296223 @default.
- W2800260072 hasConcept C86803240 @default.
- W2800260072 hasConcept C94061648 @default.
- W2800260072 hasConceptScore W2800260072C127413603 @default.
- W2800260072 hasConceptScore W2800260072C129968341 @default.