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Applied Sciences
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Advanced Technologies for Resource Recovery and Pollutants Removal from Wastewater...
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Advanced Technologies for Resource Recovery and Pollutants Removal from Wastewater and Sludge

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Environmental Sciences".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 4271

Special Issue Editors

Prof. Dr. Keke Xiao

E-Mail Website
Guest Editor
School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Interests: anaerobic digestion; sludge dewatering; dissolved organic matter; humic substances
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Rui Du

E-Mail Website
Guest Editor
Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
Interests: biological wastewater treatment; nutrient removal; anammox
Prof. Dr. Faqian Sun

E-Mail Website
Guest Editor
College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China
Interests: membrane bioreactor; nutrient removal; anaerobic digestion; wastewater treatment
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Yun Chen

E-Mail Website
Guest Editor
School of Environment, Nanjing Normal University, Nanjing 230026, China
Interests: anaerobic digestion; sludge treatment; phosphorus recovery

Special Issue Information

Dear Colleagues,

Wastewater and sewage sludge are wasted resources. Technologies have been developed to recover methane and nutrients (protein, carbon, nitrogen, etc.) from wastewater and sewage sludge. However, at the same time, wastewater and sewage sludge constitute a sink for undesirable components from households, industry and diffuse sources, whose environmental relevance and impacts are somewhat poorly understood. We proposed this virtual Special Issue to systematically cover four major aspects:

1) Novel technologies for enhancing biogas production;

2) Phosphorus recovery from sewage sludge and wastewater;

3) Novel technologies for the valorization of wastewater and sewage sludge;

4) Advanced oxidation process for the removal of pollutants.

We hope this Special Issue will offer insights into addressing these opportunities and barriers for nutrient recovery and pollutant removal from wastewater and sludge. We believe Applied Sciences is an ideal outlet for such a Special Issue, considering the current energy shortage worldwide.

Prof. Dr. Keke Xiao
Prof. Dr. Rui Du
Prof. Dr. Faqian Sun
Prof. Dr. Yun Chen
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (2 papers)

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Research

19 pages, 1835 KiB  
Article
Effects of Bisphenol A Stress on Activated Sludge in Sequential Batch Reactors and Functional Recovery
by Junhua Shao, Kejian Tian, Fanxing Meng, Shuaiguo Li, Han Li, Yue Yu, Qing Qiu, Menghan Chang and Hongliang Huo
Appl. Sci. 2022, 12(16), 8026; https://0-doi-org.brum.beds.ac.uk/10.3390/app12168026 - 10 Aug 2022
Cited by 3 | Viewed by 1869
Abstract
This study assessed the toxic effects of bisphenol A (BPA) on the microbial community and the function of activated sludge in sequencing batch reactors (SBRs). The toxicity of BPA was mitigated through dosing sludge with Rhodococcus Req-001. BPA reduced the biomass of sludge, [...] Read more.
This study assessed the toxic effects of bisphenol A (BPA) on the microbial community and the function of activated sludge in sequencing batch reactors (SBRs). The toxicity of BPA was mitigated through dosing sludge with Rhodococcus Req-001. BPA reduced the biomass of sludge, and the proportion of viable bacteria decreased with the aggravation of BPA pollution. BPA affected the secretion of extracellular polymeric substances (EPSs), increased the ratio of polysaccharide to protein, and deteriorated the sedimentation performance of sludge. BPA decreased the abundances of functional bacteria involved in the degradation of organic matter and water purification, including Polaromonas, Dechloromonas, and Nitrospira, and the water purification capacity of the reactor decreased. Req-001 enhanced the BPA removal efficiency by 15%, and increased ammonia nitrogen and phosphorus removal by 8.8% and 22.7%, respectively. The functional recovery ability of the sludge system and the high removal ability of Req-001 make it a promising specie for use in BPA bioremediation. This study combined the effect of BPA on activated sludge and reactor performance with the microbial community, clarified the toxic mechanism of BPA on activated sludge, and therefore provides a theoretical basis and potential solutions to help WWTPs cope with the toxic effects of BPA. Full article
(This article belongs to the Special Issue Advanced Technologies for Resource Recovery and Pollutants Removal from Wastewater and Sludge)
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14 pages, 1462 KiB  
Article
Effect of Sodium on Methanogens in a Two-Stage Anaerobic System
by Keke Xiao, Yogananda Maspolim, Yan Zhou, Chenghong Guo and Wun Jern Ng
Appl. Sci. 2022, 12(3), 956; https://0-doi-org.brum.beds.ac.uk/10.3390/app12030956 - 18 Jan 2022
Cited by 5 | Viewed by 1563
Abstract
This study evaluated the effects of sodium on anaerobic biomass from the second-stage reactor of a two-stage anaerobic digester. The results indicated that methanogens showed a relatively high sodium tolerance of 2.4 g Na+ L−1. Microbial community analysis showed that [...] Read more.
This study evaluated the effects of sodium on anaerobic biomass from the second-stage reactor of a two-stage anaerobic digester. The results indicated that methanogens showed a relatively high sodium tolerance of 2.4 g Na+ L−1. Microbial community analysis showed that viable Methanomicrobiales was the most abundant population by a combined propidium monoazide cross-linking quantitative polymerase chain reaction technique. There was a population shift towards higher abundance of Thermotoga (0.02%), Clostridium (2.50%) and Methanoculleus (13.80%). Biomass activity in relation to increased sodium concentrations was investigated with the adenosine triphosphate test coupled with extracellular polymeric substances measurement. The results showed biomass activity decreased from 33 to 16 µg g−1 volatile suspended solids as sodium concentrations increased from 1.3 to 9.1 g Na+ L−1. Higher EPS production, particularly a greater predominance of carbohydrates, was stimulated by higher sodium concentrations. This study provides insights into the superiority of sodium tolerance of two-stage anaerobic digester in compared with a single-stage anaerobic system. Full article
(This article belongs to the Special Issue Advanced Technologies for Resource Recovery and Pollutants Removal from Wastewater and Sludge)
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