Results 211 to 220 of about 178,624 (294)

Insights into Fe(Ⅱ)-sulfite-based pretreatment strategy for enhancing short-chain fatty acids (SCFAs) production from waste activated sludge: Performance and Mechanism.

Bioresource Technology, 2022
This paper proposed a concept of "co-treating" of waste activated sludge (WAS) with waste-derived sulfite and environmentally-friendly ferrous iron. The maximal short-chain fatty acids (SCFAs) production from WAS anaerobic fermentation ascended by 27.1 ...
Lixin Tian, Haixiao Guo, Yufen Wang, Zhongxian Su, Tingting Zhu, Yiwen Liu   +5 more
semanticscholar   +1 more source

Genome-Centric Metatranscriptomics Analysis Reveals the Role of Hydrochar in Anaerobic Digestion of Waste Activated Sludge.

Environmental Science and Technology, 2021
Anaerobic digestion (AD) of waste activated sludge (WAS) has been widely used, while it poses problems including low methane yield and production rate. Hydrochar is produced by hydrothermal liquefaction of biomass; however, little is known about the role
Zhijian Shi, S. Campanaro, Muhammad Usman, L. Treu, Arianna Basile, I. Angelidaki, Shicheng Zhang, G. Luo   +7 more
semanticscholar   +1 more source

Unveiling the the Mechanism of Urine Source Separation-Derived Pretreatment on Enhancing Short-Chain Fatty Acid Yields from Anaerobic Fermentation of Waste Activated Sludge.

Environmental Science and Technology, 2022
A novel strategy employing urine wastewater derived from source separation technology, to pretreat waste activated sludge (WAS) for promoting yields of short-chain fatty acids (SCFAs), has been proposed in this study.
L. Tian, Haixiao Guo, Yufen Wang, Jiaqi Hou, Tingting Zhu, Yindong Tong, Peizhe Sun, Yiwen Liu   +7 more
semanticscholar   +1 more source

An Innovative Process for Mature Landfill Leachate and Waste Activated Sludge Simultaneous Treatment Based on Partial Nitrification, In Situ Fermentation, and Anammox (PNFA).

Environmental Science and Technology, 2021
An innovative partial nitrification, in situ fermentation, and Anammox (PNFA) system was developed to achieve mature landfill leachate and waste activated sludge simultaneous treatment.
Fangzhai Zhang, Yongzhen Peng, Zhong Wang, Hao Jiang, Shang Ren, Jingang Qiu, Liang Zhang   +6 more
semanticscholar   +1 more source

The Digestibility of Waste Activated Sludges

Water Environment Research, 2006
Laboratory digestion studies using waste activated sludges (WAS) were conducted to compare the digestion performance between anaerobic and aerobic processes. Nine samples of WAS from seven wastewater treatment plants were collected and batch‐digested under both anaerobic and aerobic conditions for 30 days at 25 °C.
Chul, Park, Mohammad M, Abu-Orf, John T, Novak   +2 more
openaire   +2 more sources

Unveiling the dual faces of chitosan in anaerobic digestion of waste activated sludge.

Bioresource Technology, 2021
In this study, the roles of chitosan (CTS) in anaerobic digestion of waste activated sludge (WAS) were investigated. The results show that the methane production potential of WAS is positively correlated with the CTS content.
Mengyu Yin, Hongbo Chen
semanticscholar   +1 more source

Waste-Activated Sludge Treatment Processes

2020
Biological processes are the most common methods to treat wastewater but they produce huge amounts of waste-activated sludge (WAS) as a by-product. WAS generated during wastewater treatment must be stabilized sufficiently prior to ultimate disposal. The most common methods of sludge stabilization are biological processes (aerobic or anaerobic digestion)
Chin Heng Gan, Siew Hoong Shuit
openaire   +1 more source

Improving Medium-Chain Fatty Acid Production from Anaerobic Fermentation of Waste Activated Sludge Using Free Ammonia

, 2021
The utilization of waste activated sludge (WAS) to recover energy in the form of medium-chain fatty acids (MCFAs) is increasingly attractive due to the high energy density of products.
Yun Wang, Wei Wei, Wei Wu, Jing Sun, Qiu-xiang Xu, Dong-bo Wang, Lan Song, B. Ni   +7 more
semanticscholar   +1 more source

Conditioning, Filtering, and Expressing Waste Activated Sludge

Journal of Environmental Engineering, 1999
In this study, the applied liquid pressure was used to characterize the rate and extent of activated sludge dewatering in the expression phase. By characterizing the liquid pressure, three important features of expression phase dewatering were determined.
Novak, J. T., Agerbæk, M., Sørensen, B. L., Hansen, J. Aa.   +3 more
openaire   +2 more sources

Revealing the Mechanism of Biochar Enhancing the Production of Medium Chain Fatty Acids from Waste Activated Sludge Alkaline Fermentation Liquor

, 2021
In this work, the effectiveness of biochar with distinctively different particle sizes (i.e., 2000–5000 and 75–150 μm) derived from anaerobically digested sludge was comprehensively evaluated in th...
Shu-Lin Wu, Wei Wei, Qiu-xiang Xu, Xiaochen Huang, Jing Sun, Xiaohu Dai, B. Ni   +6 more
semanticscholar   +1 more source