Searched for: subject%3A%22sewage%255C+sludge%22
(1 - 13 of 13)
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Gu, Chunping (author), Ji, Yongjie (author), Yang, Yang (author), Liu, Jintao (author), Ni, Tongyuan (author)
Sewage sludge ash (SSA) is the combustion residue of the sewage sludge obtained from wastewater treatment plants. In China, SSA normally contains high content of SO3, which may cause detrimental effect on the volume stability of cement-based materials. This study investigated the effect of sulfate-rich SSA (SR-SSA) on the volume deformation and...
conference paper 2021
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Calderon Franco, D. (author), Apoorva, Seeram (author), Medema, G.J. (author), van Loosdrecht, Mark C.M. (author), Weissbrodt, D.G. (author)
Wastewater treatment is challenged by the continuous emergence of chemical and biological contaminants. Disinfection, advanced oxidation, and activated carbon technologies are accessible in high-income countries to suppress them. Low-cost, easily implementable, and scalable solutions are needed for sanitation across regions. We studied the...
journal article 2021
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Wei, P. (author), Uijttewaal, W.S.J. (author), van Lier, J.B. (author), de Kreuk, M.K. (author)
Accurate rheological characterisation of sewage waste activated sludge (WAS) is of high importance for downstream processing related to optimised sludge pumping and mixing, assessment of energy demands and overall process design. However, to elaborate rheological behaviour is often challenging under dynamic operational conditions in practice....
journal article 2021
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Abdelrahman, Amr Mustafa (author), Ozgun, Hale (author), Dereli, Recep Kaan (author), Isik, Onur (author), Ozcan, Onur Yilmaz (author), van Lier, J.B. (author), Ozturk, Izzet (author), Ersahin, Mustafa Evren (author)
Excess sewage sludge in wastewater treatment plants (WWTPs) is regarded the key energy source for achieving energy neutral WWTPs. The anaerobic digestion process transforms sludge-organic matter into methane, which subsequently can be used for heat and electricity production. Conventional anaerobic digesters (ADs) have been used for sludge...
journal article 2020
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Kassab, Ghada (author), Kather, Dima (author), Odeh, Fadwa (author), Shatanawi, Khaldoun (author), Halalsheh, Maha (author), Arafah, Mazen (author), van Lier, J.B. (author)
As a potential approach for enhanced energy generation fromanaerobic digestion, iron-based conductive nanoparticles have been proposed to enhance the methane production yield and rate. In this study, the impact of two different types of iron nanoparticles, namely the nano-zero-valent-iron particles (NZVIs) and magnetite (Fe<sub>3</sub>O<sub>4...
journal article 2020
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Wilfert, P.K. (author), Meerdink, J. (author), Degaga, B. (author), Temmink, H. (author), Korving, L. (author), Witkamp, G.J. (author), Goubitz, K. (author), van Loosdrecht, Mark C.M. (author)
Sulfide is frequently suggested as a tool to release and recover phosphate from iron phosphate rich waste streams, such as sewage sludge, although systematic studies on mechanisms and efficiencies are missing. Batch experiments were conducted with different synthetic iron phosphates (purchased Fe(III)P, Fe(III)P synthesized in the lab and...
journal article 2020
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Koomen, Stef (author)
Phosphate is removed from wastewater to prevent eutrophication. Chemical phosphorus removal by iron dosing is commonly used for this purpose, where phosphorus is among others bound in the mineral vivianite (Fe(II)3[PO4]2 · 8 H2O). A molar Fe:P ratio of 2.5 in sludge will capture 70-90% of total phosphorus in vivianite after anaerobic digestion,...
master thesis 2019
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Wilfert, P.K. (author)
The scope of this thesis was to lay the basis for a phosphate recovery technology that can be applied on sewage sludge containing iron phosphate. Such a technology should come with minimal changes to the existing sludge treatment configuration while keeping the use of chemicals or energy as small as possible. The research focused on...
doctoral thesis 2018
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Gonzales, A. (author), Hendriks, A.T.W.M. (author), van Lier, J.B. (author), de Kreuk, M.K. (author)
Pre-treatments for waste activated sludge (WAS) are, in most cases, an attempt to increase the biodegradation and/or improve hydrolysis rate of WAS after anaerobic digestion. This review presents an extensive analysis of WAS pre-treatments effectiveness focusing on increasing the biodegradability. In the first part of the review, WAS is...
journal article 2018
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de Leeuw, David (author)
Supercritical water gasification is a process in which wet biomass is converted to bio-syngas. In this process the temperature and pressure are raised above the critical point of water (374 C, 221 bar), creating a supercritical medium in which a high conversion and energetic efficiency of biomass to bio-syngas is realized. Due to these high...
master thesis 2017
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Sharma, Hemant (author)
Wastewater production has been steadily increasing globally. Treatment of wastewater and the resulting sludge is crucial for human health and ecosystem conservation. Furthermore, water supply and treatment is an energy intensive sector where the electricity consumption is projected to increase by more than 80% in the next 25 years.<br/><br/...
master thesis 2017
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Siccama, Joanne (author)
Supercritical water gasification (SCWG) is a thermochemical conversion process in which wet biomass is converted into gaseous products as methane, carbon dioxide and hydrogen. For SCWG both the temperature and pressure of the medium are increased beyond the critical point of water (373.95⁰C and 220.64 bar). The supercritical water acts as an...
master thesis 2017
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Wilfert, P.K. (author), Mandalidis, A. (author), Dugulan, A.I. (author), Goubitz, K. (author), Korving, L. (author), Temmink, H. (author), Witkamp, G.J. (author), van Loosdrecht, Mark C.M. (author)
Iron is an important element for modern sewage treatment, inter alia to remove phosphorus from sewage. However, phosphorus recovery from iron phosphorus containing sewage sludge, without incineration, is not yet economical. We believe, increasing the knowledge about iron-phosphorus speciation in sewage sludge can help to identify new routes...
journal article 2016
Searched for: subject%3A%22sewage%255C+sludge%22
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