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Microbiology Technology Application in Wastewater Treatment
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Microbiology Technology Application in Wastewater Treatment

A special issue of International Journal of Environmental Research and Public Health (ISSN 1660-4601). This special issue belongs to the section "Environmental Microbiology".

Deadline for manuscript submissions: closed (24 March 2023) | Viewed by 8563

Special Issue Editors

Dr. Xiaodan Wu

E-Mail Website
Guest Editor
State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
Interests: microbiology; microalgae cultivation; wastewater treatment; waste resource utilization
Dr. Xian Cui

E-Mail Website
Guest Editor
State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
Interests: agro-industrial waste; biomass valorisation; value-added products; polysaccharide; integrated microbial bioprocess; anaerobic digestion; value-added biocompounds
Special Issues, Collections and Topics in MDPI journals
Dr. Qi Zhang

E-Mail Website
Guest Editor
State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
Interests: biomass waste; adsorbent materials; microalgae cultivation; anaerobic digestion; wastewater treatment; wine wastewater; resource recovery; bioproducts
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The generation of wastewater in the world is increasing and unavoidable. Discharging wastewater from industry, agriculture, animal husbandry and service industry without proper treatment will lead to pollution, which threatens the environment in which we live. Meanwhile, the resource utilization of wastewater is also imminent. Microbiology technologies for wastewater treatment have gained increasing attention due to their facility and high efficiency in nutrients recovery, as well as being an energy-saving and environmentally friendly approach. The main goal of this Special Issue is to promote the development and application of the microbiology wastewater treatment technologies with high nutrient removal rate, large value-added compounds production, clean energy output, low energy consumption and entropy production, high carbon emission reduction potential, etc. Studies on the mechanisms involved in microbial treatment techniques, microbial interaction, functions of microbial enzymes and nutrients recovery by microorganisms during biological wastewater treatment are warmly welcomed in this Special Issue. Potential topics include, but are not limited to: microbial enzyme technology for wastewater pollutants treatment; wastewater treatment by microorganisms in constructed wetland; symbiosis technology (such as fungi–algal, bacterial–algal, activated sludge, etc.) for wastewater treatment; the recovery of nutrient sources in wastewater by microbiology biotechnology; the application of biotechnological in granular sludge treatment; enhancement technology (such as microbial pretreatments, trace elements, process optimization, etc.) of anaerobic digestion; the application of microalgae in wastewater treatment; agricultural biowaste recycling by microalgae; food industry biowaste recycling by microalgae.

Dr. Xiaodan Wu
Dr. Xian Cui
Dr. Qi Zhang
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. International Journal of Environmental Research and Public Health is an international peer-reviewed open access monthly 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 2500 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.

Keywords

  • microbial enzymes
  • wastewater
  • nutrient recovery
  • microbial symbiosis
  • granular sludge
  • anaerobic digestion
  • microalgae
  • agricultural biowaste
  • food biowaste

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Published Papers (3 papers)

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Research

14 pages, 3137 KiB  
Article
Anaerobic Co-Digestion of Pig Manure and Rice Straw: Optimization of Process Parameters for Enhancing Biogas Production and System Stability
by Pengjiao Tian, Binbin Gong, Kaijian Bi, Yuxin Liu, Jing Ma, Xiqing Wang, Zhangsun Ouyang and Xian Cui
Int. J. Environ. Res. Public Health 2023, 20(1), 804; https://doi.org/10.3390/ijerph20010804 - 1 Jan 2023
Cited by 15 | Viewed by 3925
Abstract
The objective of this study was to optimize the process parameters of the anaerobic co-digestion of pig manure and rice straw to maximize methane production and system stability. In this study, batch experiments were conducted with different mixing ratios of pig manure and [...] Read more.
The objective of this study was to optimize the process parameters of the anaerobic co-digestion of pig manure and rice straw to maximize methane production and system stability. In this study, batch experiments were conducted with different mixing ratios of pig manure and rice straw (1:0, 1:1, 1:5, 1:10, and 0:1), total solid concentrations (6%, 8%, 10%, 12%, and 14%), and inoculum accounts (5%, 10%, 15%, 20%, and 25%). The results show that a 1:5 mixing ratio of pig manure to rice straw, a 12% total solid content, and a 15% inoculum account yielded biogas up to 553.79 mL/g VS, which was a result of co-digestion increasing the cooperative index (CPI > 1). Likewise, the evolution of the pH and VFAs indicated that the co-digestion system was well-buffered and not easily inhibited by acidification or ammonia nitrogen. Moreover, the results of the Gompertz model’s fitting showed that the cumulative methane production, delay period, effective methane production time, and methane production rate under optimal conditions were significantly superior compared to the other groups employed. Full article
(This article belongs to the Special Issue Microbiology Technology Application in Wastewater Treatment)
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22 pages, 3443 KiB  
Article
Effect of Pharmaceutical Sludge Pre-Treatment with Fenton/Fenton-like Reagents on Toxicity and Anaerobic Digestion Efficiency
by Joanna Kazimierowicz, Marcin Dębowski and Marcin Zieliński
Int. J. Environ. Res. Public Health 2023, 20(1), 271; https://doi.org/10.3390/ijerph20010271 - 24 Dec 2022
Cited by 13 | Viewed by 2040
Abstract
Sewage sludge is successfully used in anaerobic digestion (AD). Although AD is a well-known, universal and widely recognized technology, there are factors that limit its widespread use, such as the presence of substances that are resistant to biodegradation, inhibit the fermentation process or [...] Read more.
Sewage sludge is successfully used in anaerobic digestion (AD). Although AD is a well-known, universal and widely recognized technology, there are factors that limit its widespread use, such as the presence of substances that are resistant to biodegradation, inhibit the fermentation process or are toxic to anaerobic microorganisms. Sewage sludge generated by the pharmaceutical sector is one such substance. Pharmaceutical sewage sludge (PSS) is characterized by high concentrations of biocides, including antibiotics and other compounds that have a negative effect on the anaerobic environment. The aim of the present research was to determine the feasibility of applying Advanced Oxidation Processes (AOP) harnessing Fenton’s (Fe2+/H2O2) and Fenton-like (Fe3+/H2O2) reaction to PSS pre-treatment prior to AD. The method was analyzed in terms of its impact on limiting PSS toxicity and improving methane fermentation. The use of AOP led to a significant reduction of PSS toxicity from 53.3 ± 5.1% to 35.7 ± 3.2%, which had a direct impact on the taxonomic structure of anaerobic bacteria, and thus influenced biogas production efficiency and methane content. Correlations were found between PSS toxicity and the presence of Archaea and biogas yields in the Fe2+/H2O2 group. CH4 production ranged from 363.2 ± 11.9 cm3 CH4/g VS in the control PSS to approximately 450 cm3/g VS. This was 445.7 ± 21.6 cm3 CH4/g VS (1.5 g Fe2+/dm3 and 6.0 g H2O2/dm3) and 453.6 ± 22.4 cm3 CH4/g VS (2.0 g Fe2+/dm3 and 8.0 g H2O2/dm3). The differences between these variants were not statistically significant. Therefore, due to the economical use of chemical reagents, the optimal tested dose was 1.5 g Fe2+/6.0 g H2O2. The use of a Fenton-like reagent (Fe3+/H2O2) resulted in lower AD efficiency (max. 393.7 ± 12.1 cm3 CH4/g VS), and no strong linear relationships between the analyzed variables were found. It is, therefore, a more difficult method to estimate the final effects. Research has proven that AOP can be used to improve the efficiency of AD of PSS. Full article
(This article belongs to the Special Issue Microbiology Technology Application in Wastewater Treatment)
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20 pages, 3121 KiB  
Article
Effect of Acid Whey Pretreatment Using Ultrasonic Disintegration on the Removal of Organic Compounds and Anaerobic Digestion Efficiency
by Joanna Kazimierowicz, Marcin Zieliński, Izabela Bartkowska and Marcin Dębowski
Int. J. Environ. Res. Public Health 2022, 19(18), 11362; https://doi.org/10.3390/ijerph191811362 - 9 Sep 2022
Cited by 11 | Viewed by 1907
Abstract
Acid whey is a by-product of the dairy industry that should be utilized or appropriately neutralized. Anaerobic processes represent a group of prospective methods for whey processing, and a key priority in their development is to improve their technological and economical effectiveness. The [...] Read more.
Acid whey is a by-product of the dairy industry that should be utilized or appropriately neutralized. Anaerobic processes represent a group of prospective methods for whey processing, and a key priority in their development is to improve their technological and economical effectiveness. The present study aimed to determine the effect of ultrasonic disintegration (UD) of acid whey on the course and effectiveness of methane fermentation. The study results demonstrated that extending the UD duration resulted in increased concentrations of dissolved forms of COD and TOC, efficiency of organic matter biodegradation, and CH4 production. The best effects were achieved at 900 s US, including CH4 production of 0.203 ± 0.01 dm3/gCODin. and CH4 content accounting for 70.9 ± 2.8%. Organic compounds were removed with the following efficiencies: COD—78.7 ± 2.1%, TOC—80.2 ± 1.3%, and BOD5—84.1 ± 1.6%. The highest net energy gain of 5.763 Wh was achieved upon UD of 300 s. Extension of UD time had no significant effect on the improvement in the energetic effectiveness of anaerobic digestion. A strong positive correlation was found between COD and TOC concentrations in the dissolved phase and CH4 production yield. Full article
(This article belongs to the Special Issue Microbiology Technology Application in Wastewater Treatment)
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