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6.3
3.9
Journals
Catalysts
Special Issues
Application of Catalysts in Sewage Treatment
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Application of Catalysts in Sewage Treatment

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Biomass Catalysis".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 5916

Special Issue Editors

Dr. Dabin Guo

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Guest Editor
School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
Interests: wastewater treatment; sludge pyrolysis; biomass gasification; catalytic degradation; bacteria–algae symbiosis; iron ore reduction
Dr. Qi Zhang

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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
Dr. Mian Hu

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Guest Editor
College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
Interests: thermochemical conversion of organic waste for energy and resource recovery; supercritical water oxidation
Prof. Dr. Yunpu Wang

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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: carbon materials; catalytic pyrolysis; value-added products; biodiesel production; hydrocarbon-rich fuel; nanoparticles; sustainable biorefinery; biohydrogen
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The world’s wastewater production is increasing with the increase of the global population. The pollutants contained in wastewater are a great threat to human health and the environment. This is especially true of refractory pollutants like aromatic compounds, pharmaceutical and personal care products, dyes, heavy metals, and endocrine disruptors, even in trace amounts. The catalytic degradation of these environmental hazards is efficient, with a lower cost compared to biological methods like activated sludge, anaerobic digestion, etc. and physical methods like absorption, reverse osmosis, etc. The development of environmentally friendly and cost-effective catalysts with long operation time should be encouraged. Original papers on the above topics and short reviews about the preparation, characterization, deactivation, regeneration, and application potential of catalysts for sewage treatment are warmly welcomed in this Special Issue.

Dr. Dabin Guo
Dr. Qi Zhang
Dr. Mian Hu
Dr. Yunpu Wang
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. Catalysts 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 2700 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

  • wastewater treatment
  • catalytic degradation
  • refractory pollutants
  • degradation pathways
  • removal mechanisms
  • deactivation
  • regeneration
  • structure–activity relationship

Published Papers (3 papers)

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Research

13 pages, 2440 KiB  
Article
Biodegradation of Congo Red Using Co-Culture Anode Inoculum in a Microbial Fuel Cell
by Kalpana Sharma, Soumya Pandit, Bhim Sen Thapa and Manu Pant
Catalysts 2022, 12(10), 1219; https://doi.org/10.3390/catal12101219 - 12 Oct 2022
Cited by 13 | Viewed by 2140
Abstract
Congo red is an azo dye widely used as a colouring agent in textile industries. It is a serious threat due to its carcinogenic effects. Its degradation has been challenging due to its complex yet stable structure. The present study was aimed to [...] Read more.
Congo red is an azo dye widely used as a colouring agent in textile industries. It is a serious threat due to its carcinogenic effects. Its degradation has been challenging due to its complex yet stable structure. The present study was aimed to investigate the effective degradation of Congo red by bioremediating bacteria isolated from different environments. To investigate predominant microorganisms that degrade Congo red and its functions in microbial fuel cells (MFCs), strains isolated from cow dung (Enterococcus faecalis SUCR1) and soil (Pseudomonas aeruginosa PA1_NCHU) were used as a co-culture inocula. The remarkable results establish that E. faecalis as an excellent microbial source for the biological degradation of dye-contaminated wastewater treatment alongside bioactive treating wastewater with varied concentrations of congo red dye. The highest efficiency percentage of dye degradation was 98% after 3 days of incubation at pH 7 and 37 °C, whereas findings have shown that the decolorization at pH 5 and 6 was lower at 66% and 83.3%, respectively, under the same incubation conditions. Furthermore, the co-culture of E. faecalis SUCR1 and P. aeruginosa at a 1:1 ratio demonstrated improved power generation in MFCs. The maximum power density of 7.4 W/m3 was recorded at a 150 mg L−1 concentration of Congo red, indicating that the symbiotic relation between these bacterium resulted in improved MFCs performance simultaneous to dye degradation. Full article
(This article belongs to the Special Issue Application of Catalysts in Sewage Treatment)
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12 pages, 2527 KiB  
Article
Unveiling the Potential of Novel Struvite–Humic Acid Composite Extracted from Anaerobic Digestate for Adsorption and Reduction of Chromium
by Xiqing Wang, Atif Muhmood, Haizhong Yu, Yuqi Li, Wenying Fan and Pengjiao Tian
Catalysts 2022, 12(7), 682; https://doi.org/10.3390/catal12070682 - 22 Jun 2022
Cited by 1 | Viewed by 1482
Abstract
A novel struvite–humic acid composite (S–HA) was derived from an anaerobic digestate and evaluated for the adsorption and reduction of chromium [Cr (VI)] in this study. The results indicated that the struvite–humic acid composite (S–HA) contains higher contents of oxygen-containing and aromatic functional [...] Read more.
A novel struvite–humic acid composite (S–HA) was derived from an anaerobic digestate and evaluated for the adsorption and reduction of chromium [Cr (VI)] in this study. The results indicated that the struvite–humic acid composite (S–HA) contains higher contents of oxygen-containing and aromatic functional groups (47.05% and 34.13%, respectively) and a higher specific surface area (19.3 m2 g−1). These special characteristics of S–HA contributed to its higher adsorption capacity (207.69 mg g−1 and 254.47 mg g−1 for pseudo-first and second-order kinetic models, respectively) for chromium. Furthermore, XPS analysis showed that a portion of the bonded Cr (VI) was reduced to Cr (III) by carboxyl and hydroxyl functional groups, which oxidized and changed into ketone and phenol functional groups. Based on the findings, it was concluded that the phosphate–humic acid composite has an outstanding chromium adsorptive and reduction capacity. However, more research is needed to fully understand the potential of the struvite–humic acid composite for chromium adsorption and reduction. Full article
(This article belongs to the Special Issue Application of Catalysts in Sewage Treatment)
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12 pages, 3910 KiB  
Article
Hydrogen-Rich Gas Production with the Ni-La/Al2O3-CaO-C Catalyst from Co-Pyrolysis of Straw and Polyethylene
by Jianfen Li, Rongyi Gao, Longkai Zhu, Yiran Zhang, Zeshan Li, Bolin Li, Jiaxiang Wang, Ji He, Yun He, Zhenhua Qin, Mahmood Laghari and Dabin Guo
Catalysts 2022, 12(5), 496; https://doi.org/10.3390/catal12050496 - 28 Apr 2022
Cited by 7 | Viewed by 1734
Abstract
Ni-based catalysts have been extensively investigated because of their superior catalytic performance. In this study, the Ni-La/Al2O3-CaO-C catalyst was prepared by homogeneous precipitation, employed in the co-pyrolysis of soybean straw with polyethylene to produce hydrogen. The optimal experimental conditions [...] Read more.
Ni-based catalysts have been extensively investigated because of their superior catalytic performance. In this study, the Ni-La/Al2O3-CaO-C catalyst was prepared by homogeneous precipitation, employed in the co-pyrolysis of soybean straw with polyethylene to produce hydrogen. The optimal experimental conditions were identified by discussing the carrier synthesis ratio, feedstock ratio, and addition of La. Additionally, the stability of the catalyst was evaluated. It was established that the carrier was produced using a molar ratio, the raw ingredients ratio of 5:5, and that the optimum catalytic action was obtained when La was added. Co-pyrolysis of soybean straw with polyethylene (PE) that was catalyzed by Ni-La/Al2O3-CaO-C generated 55.45 vol% of H2 under ideal experimental circumstances. After six applications, the H2 yield was 33.89 vol%, compared to 27.5 vol% for the Ni/Al2O3-CaO-C catalyst. The experimental results indicate that Ni-La/Al2O3-CaO-C exhibits superior catalytic activity and stability than Ni/Al2O3-CaO-C. Full article
(This article belongs to the Special Issue Application of Catalysts in Sewage Treatment)
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