Article
Engineering, Environmental
Sanam Islam Khan, Asaf Zarin, Safia Ahmed, Fariha Hasan, Ali Osman Belduz, Sabriye Canakci, Samiullah Khan, Malik Badshah, Muhammad Farman, Aamer Ali Shah
Summary: The newly isolated Bacillus altitudinis SL7 showed efficient degradation of lignin, with optimal conditions at 40 degrees Celsius and pH 8.0. The degradation was confirmed through reductions in color and lignin contents, as well as the emergence of new low molecular weight compounds. The study suggests the potential application of B. altitudinis SL7 in biological treatment of lignin-containing effluents.
WATER SCIENCE AND TECHNOLOGY
(2022)
Review
Environmental Sciences
Amit Kumar, Nirmal Kumar Srivastava, Poonam Gera
Summary: The removal of color from paper mill wastewater is a crucial issue that remains unresolved. Researchers have been exploring various methods, but have not yet found an effective method applicable on an industrial scale.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Review
Biotechnology & Applied Microbiology
Dylan M. Brown, Joel Pawlak, Amy M. Grunden
Summary: The pulp and paper industry contains a significant amount of lignocellulosic material that can be converted into valuable chemicals through bacterial fermentation. Bacterial conversion has the potential to enhance the value of lignocellulosic biomass and provide a sustainable and economically feasible approach for the pulp and paper industry.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2021)
Article
Thermodynamics
O. N. Fedyaeva, A. A. Vostrikov, D. O. Artamonov, A. V. Shishkin, M. Ya. Sokol
Summary: This study investigates the oxidation treatment of toxic waste from pulp and paper mills in supercritical water-oxygen fluid, with the addition of methane as a co-fuel. The results suggest that distributed supply of methane is more effective in reducing the oxygen excess required for complete oxidation of organic components in the waste compared to localized methane inlet.
JOURNAL OF ENGINEERING THERMOPHYSICS
(2021)
Article
Chemistry, Analytical
Chenxu Zhou, Jiaming Zhang, Yuxuan Cai, Jianhua Xiong
Summary: The study aims to provide a technical guide for the ozone degradation treatment process of pulp and paper mill wastewater and explore the reaction mechanism of dissolved and colloidal substances (DCSs). This research is crucial for effectively treating pulp and paper mill wastewater.
Article
Environmental Sciences
Sonam Tripathi, Sangeeta Yadav, Diane Purchase, Kaman Singh, Hind A. AL-Shwaiman, Ram Chandra
Summary: This study investigates the presence of organic contaminants in pulp-paper sludge and their impact on microbial populations, highlighting the need for proper waste disposal methods.
Article
Engineering, Environmental
Himadri Rajput, Rahil Changotra, Vikas Kumar Sangal, Amit Dhir
Summary: A simple anodization technique was used to synthesize Au doped TiO2 nanotubes electrodes for photoelectrocatalytic degradation of 4-CG. The optimized conditions showed 84% degradation efficiency in 6 hours. The PEC process was more effective compared to PC and EC processes. Additionally, the feasibility of using synthesized Au/TiO2NTs electrodes for large volume wastewater treatment was investigated, showing significant reduction in COD and TOC values. The cost of electrical energy consumption for both batch and recirculation mode treatments was also calculated.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Agricultural Engineering
Rajesh Kumar, Anjali Singh, Annapurna Maurya, Pooja Yadav, Ashutosh Yadav, Pankaj Chowdhary, Abhay Raj
Summary: This study identified KL-degrading Bacillus cereus from activated sludge and demonstrated their potential for degrading KL and reducing toxicity in paper mill effluent. The strain produced enzymes responsible for high KL degradation and decolorization, showing promise for pollutant removal in industrial wastewater treatment. Analysis techniques including SEM-EDS, UV-Vis, FTIR, and GC-MS were used to track the KL degradation process.
BIORESOURCE TECHNOLOGY
(2022)
Article
Microbiology
Sanhathai Ridtibud, Nuttika Suwannasai, Apichaya Sawasdee, Verawat Champreda, Cherdchai Phosri, Sarper Sarp, Nipon Pisutpaisal, Siriorn Boonyawanich
Summary: Ten white-rot fungal isolates were evaluated for their decolorization potential, and three isolates showed the highest decolorization efficiencies in 5 days. Further investigation revealed that one of the isolates could reduce the ADMI color scale by 63.6% in 10 days, but extending the treatment period did not significantly enhance the decolorization efficiencies. The results showed that this isolate has the potential to decolorize pulp and paper mill effluent through both biodegradation and biosorption processes.
CURRENT MICROBIOLOGY
(2023)
Article
Polymer Science
Sherif M. El-Kadi, Mohssen Elbagory, Hassan A. H. EL-Zawawy, Hossam F. A. EL-Shaer, Adel A. Shoukry, Sahar El-Nahrawy, Alaa El-Dein Omara, Dina Fathi Ismail Ali
Summary: Thirty bacterial isolates were tested for Poly-ss-hydroxybutyrate (PHB) production on three different media. The best isolates for producing PHB were identified and evaluated using alternative carbon sources, showing potential for the development of eco-friendly and fully biodegradable plastics. The addition of sugar beet molasses increased PHB production in Azotobacter salinestris, while Infrared and Gas chromatography-mass spectrometry analysis confirmed the presence of PHB in the produced polymers.
Article
Materials Science, Paper & Wood
Thabisile Brightwell Jele, Bruce Sithole, Prabashni Lekha, Jerome Andrew
Summary: Three different pulp and paper mill sludge samples from South African mills were characterized to determine their suitability for various beneficiation pathways. The characteristics of the sludge varied depending on the pulping technique, raw material, and effluent treatment used. From the analysis, it was found that different beneficiation pathways were more suitable for each type of sludge based on their specific characteristics.
Article
Microbiology
Jing Ren, Xiaodan Li, Weitao Zhang, Zhuofan Li, Quan Wang, Shuna Li, Shuxiang Wang, Hongya Li
Summary: In this study, a dye-decolorizing peroxidase from Bacillus amyloliquefaciens MN-13 was used for the bioremediation of pulp and paper mill effluent. The enzyme showed high efficiency in degrading lignin and reducing pollutants load, COD, color, and toxicity of the effluent.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Gregor Rudolph, Basel Al-Rudainy, Johan Thuvander, Ann-Sofi Jonsson
Summary: Fouling is a major obstacle in introducing membrane processes in the pulping industry, requiring complementary analysis methods to improve processing conditions and enhance membrane performance.
Article
Green & Sustainable Science & Technology
Iara Fontes Demuner, Fernando Jose Borges Gomes, Jessica Silva Gomes, Marcela Ribeiro Coura, Felipe Pedersoli Borges, Ana Marcia Macedo Ladeira Carvalho, Claudio Mudadu Silva
Summary: Kraft lignin is a residue from the pulping process, but integrating the biorefinery concept is crucial for sustainable development. This study evaluated the production of lignosulfonates from eucalypt kraft lignin through sulfomethylation and acid sulfonation processes. Sulfomethylation was more effective in producing lignosulfonates with a higher sulfur content, solubility in water, and confirmed chemical modifications, while acid sulfonation showed lower efficiency.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Multidisciplinary
Davide Di Francesco, Christian Dahlstrand, Joakim Lofstedt, Alexander Orebom, Johan Verendel, Christopher Carrick, Asa Hakansson, Soren Eriksson, Henrik Radberg, Henrik Wallmo, Martin Wimby, Florian Huber, Christopher Federsel, Mattias Backmark, Joseph S. M. Samec
Summary: By using mild reagents for esterification and recycling acetic anhydride and acetic acid, lignin is successfully converted into lignin esters for fuel production, thereby increasing the efficiency of pulp production.
Article
Environmental Sciences
S. Tripathi, K. Singh, A. Singh, A. Mishra, Ram Chandra
Summary: This study reveals the presence of various unknown organometallic compounds in anaerobically treated molasses-based distilleries spent wash, with some of them known to have mutagenic and androgenic properties. Toxicity tests on catfish and maize seeds showed that higher concentrations of the effluent can cause direct toxic effects on catfish, leading to damage in their gills and liver, as well as inhibition of alpha-amylase activities in germinating maize seeds.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Adarsh Kumar, Ajay Kumar Singh, Muhammad Bilal, Ram Chandra
Summary: A thermo-tolerant halophilic Bacillus aquimaris AKRC02 was isolated from pulp and paper mill waste sludge for efficient laccase production. Rice bran was found to support the maximum laccase production. Optimized environmental conditions and nutritional sources significantly enhanced laccase production, resulting in purified enzyme with high specific activity and thermal stability.
Article
Chemistry, Physical
Adarsh Kumar, Ajay Kumar Singh, Muhammad Bilal, Ram Chandra
Summary: This review explores the adaptive mechanisms of extremophilic microbial communities and extremophilic ligninolytic enzymes, as well as their biochemical properties and activity. The research emphasizes the emerging applications of ligninolytic enzymes in a broad range of industrial and biotechnological potentials.
Article
Environmental Sciences
Sonam Tripathi, Diane Purchase, Sarah Al-Rashed, Ram Chandra
Summary: Distillery sludge, a major source of aquatic pollution, was found to have higher bacterial diversity and richness at the discharge point compared to downstream sites, likely due to the stressors provided by organic and metal pollutants promoting the survival of microbial communities capable of biodegrading and detoxifying them. This study provides new insights into the impact of distillery waste on microbial communities and potential bioremediation candidates.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Sonam Tripathi, Ram Chandra, Diane Purchase, Muhammad Bilal, Raja Mythili, Sangeeta Yadav
Summary: Biodegradation of persistent organic pollutants through quorum sensing by biofilm-forming bacteria is a promising treatment process, offering excellent opportunities for horizontal gene transfer and enhancing resistance against stress conditions. However, there are gaps in knowledge regarding the environmental niche and abundance of QS bacteria in wastewater treatment systems. Further research is needed to explore QS gene expression and test full-scale applications in reactors for wastewater treatment.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Sonam Tripathi, Sangeeta Yadav, Diane Purchase, Kaman Singh, Hind A. AL-Shwaiman, Ram Chandra
Summary: This study investigates the presence of organic contaminants in pulp-paper sludge and their impact on microbial populations, highlighting the need for proper waste disposal methods.
Article
Environmental Sciences
Pooja Sharma, Preeti Chaturvedi, Ram Chandra, Sunil Kumar
Summary: This study aimed to use a combination of Brevundimonas sp (PS-4 MN238722.1) and Saccharum munja L. plant for heavy metals phytoremediation from pulp and paper industry (PPI) sludge. The results showed that Saccharum munja L. plants have the ability to absorb and translocate heavy metals, and Brevundimonas sp. (PS-4 MN238722.1) exhibited plant growth-promoting activity. This study provides an effective solution for the interdisciplinary management of industrial sludge in polluted areas.
Article
Environmental Sciences
Pankaj Chowdhary, Anjali Singh, Ram Chandra, P. Senthil Kumar, Abhay Raj, Ram Naresh Bharagava
Summary: The distillery industry generates wastewater with high concentrations of organic and inorganic pollutants. This study analyzed the pollution parameters and the occurrence of toxic and genotoxic pollutants in the wastewater. The results showed that the wastewater had high levels of BOD, COD, TS, and phosphate, and alkaline pH. Phytotoxic and genotoxic effects were observed in plants and cells exposed to the wastewater.
Article
Ecology
Anupam Priyadarshi, Ram Chandra, Michio J. J. Kishi, S. Lan Smith, Hidekatsu Yamazaki
Summary: In this study, the degree to which nutrient-phytoplankton interactions capture the overall dynamics of multi-trophic plankton ecosystems when accounting for micro-scale variability is investigated. The results show that different models of nutrient-phytoplankton interactions have different responses to variability in phytoplankton biomass. Additionally, the study suggests that the mean-field approach is inappropriate for capturing the spatial fluctuations of phytoplankton at the micro-scale.
ECOLOGICAL MODELLING
(2022)
Article
Environmental Sciences
Sonam Tripathi, Sangeeta Yadav, Pooja Sharma, Diane Purchase, Asad Syed, Ram Chandra
Summary: This study found that elevated levels of physico-chemical pollution were present in distillery sludges despite anaerobic digestion treatment. The invasive grass species Cynodon dactylon L. and its rhizobacteria showed good capacity to remediate the sludge and improve its physico-chemical parameters.
ENVIRONMENTAL RESEARCH
(2022)
Article
Agronomy
Kshitij Singh, Ram Chandra, Diane Purchase
Summary: Signaling among rhizobacteria and other soil microorganisms is crucial for successful symbiotic relationships. This review discusses the three major types of rhizospheric signaling mechanisms, the impact of signaling molecules on soil structure and rhizobacteria diversity, and the influence of signaling on root exudates, biofilm formation, root architecture, plant defense, and stress responses. The review provides a comprehensive understanding of rhizobacteria signaling and its potential applications in agriculture.
Review
Environmental Sciences
Sonam Tripathi, Diane Purchase, Muthusamy Govarthanan, Ram Chandra, Sangeeta Yadav
Summary: Quorum sensing is a bacterial system that allows cells to communicate with each other, and it is linked to cell density in the microbiome. Understanding the role of quorum sensing and developing novel approaches to control it is essential in preventing microbial pathogenesis. This review provides the latest knowledge on the relationship between quorum sensing and pathogenicity and explores the potential of quorum quenching as a control mechanism.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Environmental Sciences
Sangeeta Yadav, Sonam Tripathi, Diane Purchase, Ram Chandra
Summary: This study investigates the use of biofilm-forming bacteria for lignin degradation in pulp and paper mill effluent. The identified bacteria, Bacillus subtilis, Enterobacter cancerogenus, and Bacillus licheniformis, produced acyl-homoserine lactone (AHL) and extracellular polymeric substances (EPS) to protect the bacterial consortium. The constructed bacterial consortia effectively reduced lignin content and major organic pollutants in the effluent, providing a sustainable solution for treating lignin-containing complex pollutants.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Sonam Tripathi, Diane Purchase, Ram Chandra, Ashok Kumar Nadda, Preeti Chaturvedi
Summary: India is facing challenges related to fresh water supply, and reusing treated wastewater is an important strategy to combat water scarcity. This research provides crucial scientific data that confirm the safety of wastewater reuse in the region.
JOURNAL OF CONTAMINANT HYDROLOGY
(2023)
Article
Environmental Sciences
Kshitij Singh, Sonam Tripathi, Ram Chandra
Summary: The aim of this study was to explore the potential rhizosphere bacterial communities associated with Cannabis sativa growing on distillery sludge. Four potential bacterial species were characterized and shown to have attributes of plant growth-promoting rhizobacteria and ligninolytic enzyme activity. Furthermore, the study analyzed the conversion and disappearance of organic compounds in the distillery sludge due to the activity of the bacterial communities. The results indicate the phytoextraction properties of C. sativa for pollutants in the sludge.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)