Article
Multidisciplinary Sciences
Mohaddeseh Zahmatkesh Anbarani, Sima Nourbakhsh, Ali Toolabi, Ziaeddin Bonyadi
Summary: The study optimized crystal violet (CV) removal by S. cerevisiae, with the most efficient conditions being a CV concentration of 100 mg/L, pH of 7, and S. cerevisiae dose of 1.5 g/L. The findings showed a direct relationship between initial CV concentration, pH, and S. cerevisiae dose on removal efficiency, although it slightly decreased with longer reaction times.
Article
Food Science & Technology
Congning Zhai, Yangguang Yu, Jun Han, Junqiang Hu, Dan He, Hongyin Zhang, Jianrong Shi, Sherif Ramzy Mohamed, Dawood H. Dawood, Gang Wang, Jianhong Xu
Summary: In this study, an anaerobic ZEN-degrading bacterium named F39 was isolated from animal intestinal contents and identified as Clostridium sporogenes. F39 showed a high efficiency in degrading ZEN and converting it into alpha- and beta-zearalenol, reducing the toxicity of degradation products. Additionally, F39 exhibited higher degradation efficiency in wheat-based feedstuffs compared to other feedstuffs, and the efficiency was pH related.
Article
Green & Sustainable Science & Technology
Xiaoli Su, Feiyun Sun, Jianjun Zhang, Dingyu Xing, Xiaoying Li, Zi Song, Liang Feng, Zhichao Huang, Ang Li
Summary: This study investigated the interaction between functional microbiota succession and different electron acceptors in the degradation of anaerobic sulfamethoxazole (SMX). The results showed that the presence of sulfate as an electron acceptor was more beneficial for SMX degradation and system stability. However, competition between autotrophic nitrate-reducing sulfate-oxidizing bacteria and sulfate-reducing bacteria resulted in ineffective SMX degradation. The study highlights the importance of selecting the appropriate electron acceptor for the removal of antibiotics in anaerobic degradation processes.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Biotechnology & Applied Microbiology
Yaru Zhang, Jing Ren, Quan Wang, Shuxiang Wang, Shuna Li, Hongya Li
Summary: The study showed that Bacillus amyloliquefaciens BaDyP can efficiently degrade CV dye, with degradation products undergoing N-demethylation and cleavage of chromophore structure; BaDyP also exhibited high decolorization efficiency, making it suitable as a biocatalyst for dye treatment in wastewater.
BIOCHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Jiao Sun, Zuotao Zhang, Hui Wang, Matthew J. Rogers, Haijiao Guo, Jianzhong He
Summary: The study demonstrated the effective anaerobic degradation of PAHs using the anaerobic co-culture DYM1 obtained from petroleum-polluted soil without the need for additional terminal electron acceptors. This provides a novel approach for recovering energy from toxic pollutants in the form of methane.
ENVIRONMENTAL POLLUTION
(2022)
Article
Immunology
Joana Castro, Angela Lima, Lucia G. V. Sousa, Aliona S. Rosca, Christina A. Muzny, Nuno Cerca
Summary: Bacterial Vaginosis (BV) is a complex condition involving the presence of a multi-species biofilm in the vagina. The commonly used crystal violet (CV) staining method to quantify biofilms is not suitable for accurately quantifying multi-species biofilms in BV research.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2022)
Review
Biotechnology & Applied Microbiology
M. Concetta Tomei, Domenica Mosca Angelucci, Elisa Clagnan, Lorenzo Brusetti
Summary: Anaerobic biodegradation of toxic compounds in industrial wastewater is an attractive solution for energy and resource recovery, but faces challenges due to low kinetics compared to aerobic processes. Research on anaerobic phenol degradation focuses on microbiological and technological aspects to enhance competitiveness, with a gap still existing between aerobic and anaerobic performance. Efforts are needed to develop powerful technologies and effective strategies to improve the anaerobic process and move towards more sustainable wastewater treatment.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2021)
Article
Engineering, Environmental
Hina Dilawar, Cigdem Eskicioglu
Summary: The increase in production of biobased plastics has led to the need for studying their degradation. This study examined the biodegradability of a biocomposite cellphone case under different laboratory and field conditions. The results showed that composting was more effective than anaerobic conditions in degrading the cellphone case.
Review
Environmental Sciences
Chao Chen, Zhan Zhang, Ping Xu, Haiyang Hu, Hongzhi Tang
Summary: Although many anaerobic microorganisms capable of degrading PAHs have been identified, there is still a significant gap between laboratory research and practical applications. This review discusses recent advancements in the biodegradation of PAHs under anaerobic conditions, focusing on the metabolic pathways and functional genes involved. The achievements and strategies for enhancing anaerobic PAHs bioremediation in soil are summarized. Future perspectives, including challenges such as time-consuming enrichment, unknown toxicity of byproducts, and activity inhibition at low temperatures, are proposed. Additionally, the use of meta-omics, synthetic biology, and engineering microbiome for developing microbial inoculum is discussed, highlighting the potential for further advancements in anaerobic bioremediation.
ENVIRONMENTAL RESEARCH
(2023)
Article
Agricultural Engineering
Wenqian Zhao, Xiaodong Zhang, Yanpeng Cai, Shan Zhao, Shuguang Wang
Summary: MNZ inhibits anaerobic fermentation more strongly in mesophilic conditions than in thermophilic conditions. It can be completely removed through biodegradation. MNZ reduces the abundance of hydrogen-producing bacteria and its inhibition on anaerobic fermentation is reversible.
BIORESOURCE TECHNOLOGY
(2022)
Review
Agricultural Engineering
Mirko Cucina, Patrizia de Nisi, Fulvia Tambone, Fabrizio Adani
Summary: Bioplastics are increasingly being used as substitutes for petroleum-derived plastics due to their biodegradability, however, concerns arise over incomplete degradation and leakage into the environment during waste management processes. This paper reviews literature on the biodegradation of bioplastics in industrial and natural environments, and discusses the potential role of waste management processes in reducing bioplastics leakage.
BIORESOURCE TECHNOLOGY
(2021)
Review
Microbiology
Zhineng Wu, Quanli Man, Hanyu Niu, Honghong Lyu, Haokun Song, Rongji Li, Gengbo Ren, Fujie Zhu, Chu Peng, Benhang Li, Xiaodong Ma
Summary: This review systematically reviews the environmental behavior and biodegradation process of trichloroethylene (TCE), a common environmental pollutant. It discusses the four main biodegradation processes and material-mediated enhanced biodegradation technologies of TCE, as well as the mechanisms, pathways, enzymes, and factors affecting the biodegradation process. The review also summarizes the research progress on TCE biodegradation in field applications and provides development prospects for future studies. Overall, it aims to provide guidance and recommendations for laboratory and field studies on the biodegradation of chlorinated aliphatic hydrocarbons.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Environmental Sciences
Lili Huo, Chenghao Zhao, Tianyuan Gu, Ming Yan, Hua Zhong
Summary: This study compared the degradation of BDE-47 by aerobic and anaerobic strains, finding that the degradation was more efficient under aerobic conditions. The addition of suitable carbon sources and inducers further enhanced the degradation.
Article
Environmental Sciences
Mouna Boulahbal, Moulay Abderrahmane Malouki, Moises Canle, Zakaria Redouane-Salah, Sandhanasamy Devanesan, Mohamad S. AlSalhi, Mohammed Berkani
Summary: In this study, natural clay was used as a natural adsorbent to remove the azo dye Crystal Violet from aqueous media. The optimal conditions for dye removal were determined, and the kinetics and thermodynamics of the adsorption process were evaluated using different models.
Article
Engineering, Environmental
Jeny Elihut Ventura Gutierrez, Franciele Pereira Camargo, Isabel Kimiko Sakamoto, Maria Bernadete Amancio Varesche
Summary: This study evaluated the degradation of non-ionic surfactant Nonylphenol Ethoxylate (NPEO) during the co-digestion of domestic sewage and commercial laundry wastewater. The results showed that under specific conditions, NPEO was biodegraded by nearly 60%, but it negatively affected methanogenic activity.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Chemistry, Physical
Mohd Zeeshan, Rais Ahmad, Aftab Aslam Parwaz Khan, Asif Ali Khan, Sakshi Singh
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2020)
Article
Biochemistry & Molecular Biology
Vinod Kumar Gupta, Shilpi Agarwal, Rais Ahmad, Anam Mirza, Jyoti Mittal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2020)
Article
Biochemistry & Molecular Biology
Rais Ahmad, Khalid Ansari
Summary: This paper synthesized an eco-friendly and low-cost chitosan modified hybrid Azadirachta indica leaves powder-Kaolinite clay nanocomposite and investigated its potential as an adsorbent for removing hazardous dyes from aqueous solution. The results showed that the nanocomposite had good adsorption capacity for Congo red and Methylene blue dyes, with the ability to be successfully regenerated multiple times. The study also found that the adsorption process followed pseudo second order kinetics and had thermodynamic parameters indicating spontaneous and endothermic nature.
PROCESS BIOCHEMISTRY
(2021)
Article
Environmental Sciences
Jyoti Mittal, Rais Ahmad, Mohammad Osama Ejaz, Asna Mariyam, Alok Mittal
Summary: A novel bio-nanocomposite (Alg-Cst/Kal) was synthesized for the effective removal of Crystal Violet dye from aqueous solutions. The material demonstrated excellent adsorption properties and was found to follow Freundlich adsorption isotherm model. Thermodynamic studies showed the endothermic nature and spontaneity of the adsorption process. The material's high adsorption capacity and potential for wastewater treatment were highlighted.
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
(2022)
Article
Materials Science, Multidisciplinary
Rais Ahmad, Khalid Ansari, Mohammad Osama Ejaz
Summary: In this study, a poly(acrylamide)-grafted cell@Fe3O4 (PAC@Fe3O4) nanocomposite was synthesized, and its adsorption performance for Pb(II), Ni(II), and Cu(II) in wastewater was investigated. The research found that the adsorption efficiency was pH-dependent, with the highest removal occurring at high pH levels and at pH 5 for all three metal ions. The maximum adsorption capacities were determined to be 313.02 mg g(-1) for Pb(II), 219.33 mg g(-1) for Ni(II), and 210.71 mg g(-1) for Cu(II). Kinetic analysis revealed that the adsorption of metal ions followed second-order kinetics, with chemical adsorption as the rate-limiting step. The adsorption process was endothermic and spontaneous.
EMERGENT MATERIALS
(2022)
Article
Energy & Fuels
Rais Ahmad, Mohammad Osama Ejaz
Summary: In this study, a potential bentonite/silver nanoparticles-alginate bio-nanocomposite was synthesized and found to be effective in adsorbing methylene blue dye. The surface morphology of the bio-nanocomposite was analyzed using various analytical methods, and the optimum adsorption conditions and Langmuir isotherm fitting results were determined. The adsorption was confirmed to be endothermic and spontaneous based on the thermodynamic parameters.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Engineering, Chemical
Rais Ahmad, Mohammad Osama Ejaz
Summary: A novel Alginate-Silver nanoparticle/Mica bio-nanocomposite was synthesized and utilized for the removal of methylene blue and brilliant green dyes from aqueous solution.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Chemistry, Applied
Rais Ahmad, Mohammad Osama Ejaz
Summary: Hybrid materials of hydrates/proteins/nanoparticles can effectively remove Crystal violet dye, with the optimal adsorption conditions of pH 8, 0.01 g adsorbent dosage, and a duration of 180 minutes, achieving a maximum adsorption capacity of 85.13 mg/g.
Correction
Engineering, Environmental
Rais Ahmad
GROUNDWATER FOR SUSTAINABLE DEVELOPMENT
(2021)
Article
Engineering, Chemical
Jyoti Mittal, Rais Ahmad, Alok Mittal
Summary: The study demonstrated that novel Kahwa tea carbon is an effective adsorbent for sequestration of Titan yellow dye from aqueous solution. The adsorption process followed a pseudo-second-order kinetic model and the equilibrium adsorption data fitted well with the Langmuir isotherm model.
DESALINATION AND WATER TREATMENT
(2021)
Article
Engineering, Chemical
Jyoti Mittal, Rais Ahmad, Asna Mariyam, V. K. Gupta, Alok Mittal
Summary: The study found that papaya peel carbon (PPC) can effectively remove heavy metal ions Pb(II), Cu(II), and Ni(II) from aqueous phases, making it a potential low-cost alternative adsorbent. The research also explored optimal adsorption conditions and kinetic parameters, providing insights into the adsorption process mechanisms.
DESALINATION AND WATER TREATMENT
(2021)
Article
Chemistry, Multidisciplinary
Mohd. Zeeshan, Rais Ahmad, Asif Ali Khan, Aftab Aslam Parwaz Khan, Guillermo C. Bazan, Basma Ghaleb Alhogbi, Hadi M. Marwani, Sakshi Singh
Summary: A polycarbazole-Sn(iv) arsenotungstate (Pcz-SnAT) nanocomposite cation exchanger membrane was successfully prepared and shown to be selective towards Pb(ii) ions. The membrane exhibited optimal performance when the composite ratio of PVC was 4.5:1, making it suitable for use as an electrode indicator in potentiometric titration.
Article
Engineering, Environmental
Rais Ahmad, Khalid Ansari
GROUNDWATER FOR SUSTAINABLE DEVELOPMENT
(2020)
Article
Water Resources
Rais Ahmad, Khalid Ansari
APPLIED WATER SCIENCE
(2020)
Article
Engineering, Environmental
Anam Mirza, Rais Ahmad
GROUNDWATER FOR SUSTAINABLE DEVELOPMENT
(2020)