Integrating alum sludge with waste-activated sludge in co-conditioning and dewatering: a case study of a city in south France
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DOI: 10.1007/s11356-020-08056-0
Abstract: The unique geographical location of waterworks and wastewater treatment plant (WWTP) in Graulhet (France) profited the environmental resource integration and “Circular Economy.” Alum sludge from a local waterworks was introduced to co-conditioning and dewatering with… read more here.
Keywords: alum sludge; conditioning dewatering; activated sludge; sludge ... See more keywords
Behaviors of dewaterability and heavy metals of waste activated sludge conditioned by heat-activated peroxymonosulfate oxidation
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DOI: 10.1007/s11696-019-00912-9
Abstract: In this work, heat-activated peroxymonosulfate (heat-PMS) oxidation was used to condition waste activated sludge. The results showed that the optimal temperature and PMS dosage for sludge dewatering were 75 °C and 150 mg/g-volatile solids (VS), and the addition… read more here.
Keywords: oxidation; activated peroxymonosulfate; heat activated; heat ... See more keywords
Screening of quorum quenching activity of the bacteria isolated from dairy industry waste activated sludge
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DOI: 10.1007/s13762-018-1930-5
Abstract: Intercellular bacterial communication process via exchange of signalling molecules acyl homoserine lactone results in various group activities like bioluminescence, antibiotic production, biofilm formation, sporulation, and virulence. The signalling molecules are targeted, and the communication is… read more here.
Keywords: quenching activity; quorum quenching; activated sludge; homoserine lactone ... See more keywords
Surfactant coupled sonic pretreatment of waste activated sludge for energetically positive biogas generation.
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DOI: 10.1016/j.biortech.2017.05.201
Abstract: The objective of this study was to evaluate the effect of dioctyl sodium sulphosuccinate (DOSS, a surfactant) on lysis rate of sludge and specific energy required for sonic pretreatment of waste activated sludge (WAS). Different… read more here.
Keywords: pretreatment waste; doss; sludge; pretreatment ... See more keywords
Improving the co-digestion performance of waste activated sludge and wheat straw through ratio optimization and ferroferric oxide supplementation.
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DOI: 10.1016/j.biortech.2018.07.052
Abstract: Low anaerobic digestion efficiency of wheat straw (WS) has been an intractable problem owing to its high C/N ratio and complex structure. In this study, co-digestion of WS and waste activated sludge (WAS) at different… read more here.
Keywords: waste activated; activated sludge; digestion; wheat straw ... See more keywords
Characteristics of ultra-fine bubble water and its trials on enhanced methane production from waste activated sludge.
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DOI: 10.1016/j.biortech.2018.10.077
Abstract: In this study biogas production efficiency was evaluated by adding ultra-fine bubble water (UFBW) into waste activated sludge (WAS) through anaerobic digestion (AD). Four kinds of gases, i.e. Air, N2, CO2 and H2 were introduced… read more here.
Keywords: production; water; bubble water; fine bubble ... See more keywords
Enhanced methane production from waste activated sludge by combining calcium peroxide with ultrasonic: Performance, mechanism, and implication.
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DOI: 10.1016/j.biortech.2019.01.115
Abstract: This study reported a novel and high-efficient pretreatment method for anaerobic digestion, i.e., combining calcium peroxide (CaO2) with ultrasonic (US), by which not only the methane production was remarkably improved but also the removal of… read more here.
Keywords: methane production; methane; combining calcium; waste activated ... See more keywords
Thermal-alkaline pretreatment of polyacrylamide flocculated waste activated sludge: Process optimization and effects on anaerobic digestion and polyacrylamide degradation.
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DOI: 10.1016/j.biortech.2019.02.095
Abstract: Deterioration of anaerobic digestion can occur with the presence of polyacrylamide (PAM) in waste activated sludge, and little information on mitigating this deterioration is currently available. In this study, simultaneous mitigation of PAM negative effects… read more here.
Keywords: degradation; pam; activated sludge; pretreatment ... See more keywords
Enhanced short-chain fatty acids production from waste activated sludge by sophorolipid: Performance, mechanism, and implication.
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DOI: 10.1016/j.biortech.2019.03.121
Abstract: It was found in this study that the presence of sophorolipid (SL) enhanced the production of short-chain fatty acid (SCFA) from anaerobic fermentation of waste activated sludge (WAS). Experimental results showed that with an increase… read more here.
Keywords: activated sludge; waste activated; chain fatty; short chain ... See more keywords
Volatile fatty acids production from waste activated sludge during anaerobic fermentation: The effect of superfine sand.
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DOI: 10.1016/j.biortech.2020.124249
Abstract: Superfine sand in waste activated sludge (WAS) increased the uncertainty of anaerobic fermentation. Experiments showed that VFAs production from WAS was positively affected by superfine sand, with an increase from 2513 mg COD/L in the control… read more here.
Keywords: superfine sand; sand; waste activated; anaerobic fermentation ... See more keywords
Unveiling the mechanisms of how vivianite affects anaerobic digestion of waste activated sludge.
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DOI: 10.1016/j.biortech.2021.126045
Abstract: Recently, phosphorus recovery as vivianite from sludge digestion system has attracted increasing attention because of its high recovery efficiency and economic value. However, the potential impact of vivianite on anaerobic digestion of waste activated sludge… read more here.
Keywords: digestion; activated sludge; digestion waste; anaerobic digestion ... See more keywords