Article
Agricultural Engineering
Xiwei Tian, Ya Li, Yang Chen, Ali Mohsin, Ju Chu
Summary: The study introduces the use of immobilization technology to enhance SLs production during fermentation, achieving higher productivity and performance through optimization of operating conditions and addition of supplementary materials, showing potential for industrial application.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Feng Xu, Yang Chen, Xiang Zou, Ju Chu, Xiwei Tian
Summary: This study presents an intelligent and precise regulation strategy for cost-effective production of Sophorolipids (SLs) using in-situ separation. The strategy includes on-demand feeding of cells, step-wise oxygen supply regulation based on metabolic capacity, and integration of semicontinuous fermentation with in-situ separation technology. The results showed significant improvements in SLs productivity and yield, as well as high concentration of crude SLs for downstream processes.
BIORESOURCE TECHNOLOGY
(2023)
Article
Food Science & Technology
Mihaela Ivanova, Anamaria Hanganu, Raluca Dumitriu, Mihaela Tociu, Galin Ivanov, Cristina Stavarache, Liliana Popescu, Aliona Ghendov-Mosanu, Rodica Sturza, Calin Deleanu, Nicoleta-Aurelia Chira
Summary: The saponification value of fats and oils, reflecting the mean molecular weight of triacylglycerols, can be calculated using proton nuclear magnetic resonance (H-1-NMR) spectra. Compared to conventional techniques, the H-1-NMR-based method is a convenient and rapid alternative for determining saponification values.
Review
Chemistry, Multidisciplinary
Rawaz Ahmed, Katherine Huddersman
Summary: A promising solution for the future is the substitution of non-renewable fossil fuels with sustainable biofuels, specifically biodiesel produced from low-cost high Free Fatty Acid (FFA) oils. This paper reviews the effect of feedstock pre-treatment and process parameters on the conversion of waste fats, oils, and greases (FOGs) into biodiesel.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Environmental Sciences
Xiaoqi Dong, Zidan Huang, Xingxing Peng, Xiaoshan Jia
Summary: A novel coupled yeast-sludge system (CYSS) showed improved efficiency in treating non-sterile mainstream wastewater. Molecular and network analysis revealed the important role of the yeast Candida sp. PNY in the system.
Article
Agricultural Engineering
Mei Chen, Qian Lei, Lehui Ren, Jiayi Li, Xuesong Li, Zhiwei Wang
Summary: The study demonstrated the superior virus removal efficiency of the new electrochemical membrane bioreactor (EMBR) in wastewater treatment compared to the traditional MBR, mainly due to the reactive oxidants generated in the EMBR system. The EMBR system effectively mitigated the accumulation of pollutants, extending its operational duration to nearly 3 times that of the control group.
BIORESOURCE TECHNOLOGY
(2021)
Review
Environmental Sciences
Saurabh Mishra, Anurag Kumar Singh, Liu Cheng, Abid Hussain, Abhijit Maiti
Summary: This study discusses the occurrence of antibiotics in wastewater and their potential ecological risk, and critically reviews anaerobic-aerobic processes for antibiotics removal. It explores microbial dynamics responsible for antibiotic biodegradation and its economic feasibility, and discusses key research directions for future improvement. The appropriate selection of treatment processes, sources control, understanding of antibiotic fate, and adopting precise monitoring strategies could eliminate the potential ecological risks of antibiotics.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Daniele Mousel, Daniel Bastian, Julian Firk, Laurence Palmowski, Johannes Pinnekamp
Summary: Health care facilities can be point sources of pharmaceutical residues in public sewer systems. This study found that combining biological treatment with further processes such as activated carbon adsorption, ozonation and advanced oxidation can effectively remove pharmaceutical residues from wastewater in nursing homes, orthopaedic clinics, and psychiatric clinics. The results demonstrate the general suitability of these treatment methods for eliminating pharmaceutical residues, with the advanced oxidation process showing the highest energy demand.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Green & Sustainable Science & Technology
Prangya Ranjan Rout, Rajesh Roshan Dash, Puspendu Bhunia, Eunseok Lee, Jaeho Bae
Summary: The research found that the integrated bioreactor slightly outperforms the single unit bioreactor in removing NH4+-N, NO3--N, and PO43--P, and has higher microbial activity. Both bioreactors successfully resisted organic and hydraulic shock loading conditions, showing promising application prospects.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Engineering, Chemical
Nadeem A. Khan, Simranjeet Singh, Eduardo Alberto Lopez-Maldonado, N. Pavithra, Perla Fabiola Mendez-Herrera, Juan Ramon Lopez-Lopez, Umair Baig, Praveen C. Ramamurthy, Nabisab Mujawar Mubarak, Rama Rao Karri, Isam H. Aljundi
Summary: Substances called emerging pollutants, including pharmaceuticals, pesticides, cosmetics, cleaning, and personal care products, have been detected and their removal from wastewater is crucial. Membrane Bioreactor (MBR) technology is efficient in treating high organic loads and effectively removing emerging contaminants. To further remove hazardous micropollutants, tactics such as using high-retention membranes, adding functional materials, and including additional procedures for effluent treatment can be employed, although further investigation is required to assess their technical and economic viability.
Article
Environmental Sciences
Yiguang Qian, Xiaofan Jia, Tengda Ding, Mengting Yang, Bo Yang, Juying Li
Summary: The study investigated the occurrence and removal of ten bisphenol analogues in municipal wastewater treatment plants and laboratory-scale activated sludge bioreactor. Results showed that the BPA substitutes were widely used in daily life and discrepancies existed in the removal efficiencies of BPs by different wastewater treatment processes. Factors such as protonation, hydrophobicity, and molecular features were critical for the elimination of BPs in wastewater.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Onur Isik, Melek Cagla Erbil, Amr Mustafa Abdelrahman, Mustafa Evren Ersahin, Ismail Koyuncu, Hale Ozgun, Ibrahim Demir
Summary: This study investigated the fate of micropollutants in a membrane bioreactor with dynamic membrane and ultrafiltration membrane for the treatment of raw municipal wastewater. High removal efficiencies of total suspended solids, chemical oxygen demand, and micropollutants were achieved with each membrane. Morphological analyses were conducted to gain insight into the cake layer accumulated on the membrane, showing that dynamic membrane technology provides an effective alternative for micropollutant removal from municipal wastewater.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Energy & Fuels
Vinod Kumar, Prateek Gururani, Afreen Parveen, Monu Verma, Hyunook Kim, Mikhail Vlaskin, Anatoly Grigorenko, Kirill G. Rindin
Summary: Valorization of dairy-industry wastewater and stormwater energy is a new approach to sustainable agriculture. Cultivating yeast-algae consortium using diluted dairy wastewater proved effective in removing nitrogen, phosphorus, and organic compounds, as well as increasing lipid content and unsaturated fatty acids. This method also reduces bacterial load.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Environmental Sciences
Jonathan Parades-Aguilar, Viviana Reyes-Martinez, Guadalupe Bustamante, Francisco J. Almendariz-Tapia, Guadalupe Martinez-Meza, Ramiro Vilchez-Vargas, Alexander Link, Maria T. Certucha-Barragan, Kadiya Calderon
Summary: This study successfully removed nickel(II) [Ni(II)] from real industrial wastewater using a lab-scale up-flow anaerobic zeolite-packed bioreactor inoculated with a heterotrophic consortium as the bioadsorbent. High-throughput sequencing revealed significant shifts in bacterial diversity and structure along the bioreactor treatment, with certain bacterial genera playing key roles in the anaerobic removal of Ni(II). The physico-chemical results showed a 99% removal rate for Ni(II) with efficient alkalinity and biogas production, confirming the successful anaerobic digestion of microorganisms.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Biotechnology & Applied Microbiology
Emma C. Brace, Abigail S. Engelberth
Summary: This study designed an absorption unit using bio-oils as the absorbing solvent to process sour gas and remove H2S. The economic viability of using bio-oils as gas-sweetening agents depends on developing a solvent regeneration scheme capable of recycling a large portion of the bio-oil bio-solvent.
BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
(2022)
Review
Environmental Sciences
Tanushree Paul, Arindam Sinharoy, Divya Baskaran, Kannan Pakshirajan, G. Pugazhenthi, Piet N. L. Lens
Summary: This paper discusses the thermochemical conversion process of converting biomass into bio-oil, focusing on the advantages and detailed information of oleaginous microorganisms as biomass feedstocks, as well as the use of wastewater as their substrate. The different process parameters affecting the HTL technology are also discussed, along with an integrated HTL-based sustainable biorefinery approach for resource recovery.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Shreya Gupta, Pravesh Thapliyal, Vijendra Shah, Achlesh Daverey
Summary: Bio-calcification is a natural phenomenon catalyzed by the urease enzyme, influenced by various physicochemical factors. Among the bacterial isolates, BS-6 showed high urease activity and CaCO3 precipitation, with optimal inoculum size and CaCl2 concentration identified as 12% and 50 mM respectively. These findings highlight the role of Ca2+ and inoculum size in the bio-calcification process, with the identified bacterial strain BS-6 confirmed as a novel Advenelle sp. AV1 strain capable of urease production and bio-calcite formation.
GEOMICROBIOLOGY JOURNAL
(2022)
Article
Biotechnology & Applied Microbiology
Deepshikha Pandey, Achlesh Daverey, Kasturi Dutta, Vinod Kumar Yata, Kusum Arunachalam
Summary: This study demonstrates the sustainable utilization of pine needle biomass as a biosorbent for dye removal. Acid activation was found to enhance the surface functional groups and adsorption capacity of the biochar. The adsorption mechanism involved a combination of hydrogen bonding, electrostatic interaction, and aromatic interactions.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Review
Biotechnology & Applied Microbiology
Namita Panigrahy, Ankita Priyadarshini, Mitali Madhusmita Sahoo, Akshaya Kumar Verma, Achlesh Daverey, Naresh Kumar Sahoo
Summary: The growth of industries leads to the discharge of phenolic pollutants into water, posing severe threats to human health and biodiversity. Biodegradation is a sustainable and efficient method for removing these toxic pollutants, but challenges remain in enzymatic metabolic pathways, co-metabolic biodegradation, and industrial wastewater treatment. This review assesses the biological removal of phenolic pollutants and explores the ecotoxicity mechanisms, microbial enzymes and metabolic pathways involved in phenolic degradation, and the performance of various bioreactor systems. The prospects of resource recovery by photosynthetic bacteria that degrade phenolics are also discussed.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Review
Engineering, Environmental
Deepti Negi, Shelly Verma, Swati Singh, Achlesh Daverey, Jih-Gaw Lin
Summary: Constructed wetland is a sustainable eco-technology for remediation of contaminants, but its nitrogen removal efficiency is unsatisfactory. Anammox, an eco-friendly technology, can be integrated into constructed wetlands to overcome the shortcomings.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Deepshikha Pandey, Achlesh Daverey, Kasturi Dutta, Kusum Arunachalam
Summary: In this study, laccase was successfully immobilized on pine needle biochar and used for the decolorization and degradation of malachite green dye. The immobilized laccase showed high binding and immobilization yield. It retained significant activity in a wide range of pH and temperature conditions and exhibited good reusability. The immobilized laccase effectively removed malachite green dye from water, with more than 85% removal observed within 5 hours. The degradation process resulted in less toxic metabolites compared to the original dye. This study highlights the potential of laccase immobilized biochar as an efficient biocatalyst for dye removal in water.
Article
Agricultural Engineering
Anshu Priya, Shifa Naseem, Deepshikha Pandey, Anisha Bhowmick, Mustafa Attrah, Kasturi Dutta, Eldon R. Rene, Sunil Kumar Suman, Achlesh Daverey
Summary: The utilization of algal biomass for biohydrogen production faces challenges due to the complex cell wall composition, requiring additional pretreatment. Conventional pretreatment strategies have limited feasibility and economic viability. This review discusses the structural complexities of algal cell walls and highlights innovative approaches such as hybrid technologies, biosurfactants, nanoparticles, and genetic engineering for improved hydrolysis and biohydrogen production. It also provides a comprehensive evaluation of various pretreatment methods and techno-economic and life cycle assessment of algal biohydrogen production.
BIORESOURCE TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Ankita Priyadarshini, Soumya Mishra, Naresh Kumar Sahoo, Sangeeta Raut, Achlesh Daverey, Bankim Chandra Tripathy
Summary: The biodegradation of phenol using an indigenous Rhodococcus pyridinivorans strain PDB9T NS-1 encapsulated in a calcium alginate bead system was investigated. Experimental conditions, such as contact time, pH, and initial phenol doses, were studied and the results showed more than 99.6% degradation of phenol at an initial dose of 1000 mg/L in 70 hours at 30 degrees C. The immobilized microbe exhibited superior phenol biosorption capacity and exceptional operating stability.
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
(2023)
Review
Biochemistry & Molecular Biology
Priyanka Agarwal, Rutuja Vibhandik, Roma Agrahari, Achlesh Daverey, Radha Rani
Summary: Due to extensive industrialization and escalation in pollution, phytoremediation using plants and plant secretions has gained attention for remediation of heavy metal-contaminated soil. Plant root exudates act as an ecological driver in the rhizospheric region, influencing microbial community and bioavailability of pollutants. This review focuses on the role of root exudates in phytoremediation of heavy metal-contaminated soil, particularly lead, and their impact on the biogeochemistry of lead.
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
(2023)
Article
Environmental Sciences
Shelly Verma, Achlesh Daverey
Summary: In this study, a sequencing batch reactor was used to activate the anammox process, and stable nitrogen removal was achieved at nitrogen loading rates ranging from 20 to 116 (g N m(-3) d(-1)).
GEOMICROBIOLOGY JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Vijendra Shah, Pooja Dani, Achlesh Daverey
Summary: This study investigates the impact of biosurfactant on the removal of cadmium from soil and finds that an appropriate concentration of biosurfactant can promote plant growth and increase enzymatic activities in soil.
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
(2023)
Article
Environmental Sciences
Harini Methma Perera, Anushka Upamali Rajapaksha, Sudantha Liyanage, Anusha Ekanayake, Rangabhashiyam Selvasembian, Achlesh Daverey, Meththika Vithanage
Summary: A novel Chitosan-modified Mimosa pigra biochar (CMPBC) was found to have higher efficiency in removing hexavalent chromium (Cr(VI)) from aqueous systems compared to pristine biochar. The sorption of Cr(VI) was heavily dependent on pH, with the highest adsorption occurring at pH 3.0. The results suggest the potential use of CMPBC as an easily available, environmentally sustainable, and inexpensive sorbent for the decontamination of Cr(VI) from water.
ENVIRONMENTAL RESEARCH
(2023)
Article
Biotechnology & Applied Microbiology
Dipak Kumar Kanaujiya, Atharva More, Ajay Kumar Chhantyal, Rama Karn, Kannan Pakshirajan
Summary: This study focused on the biodegradation of dimethyl phthalates (DMP), di-n-butyl phthalates (DBP), and di-n-octyl phthalates (DnOP) by Gordonia sp. The results showed that Gordonia sp. can efficiently degrade DMP and DBP, but has a lower degradation efficiency for DnOP. The phytotoxicity of the degradation products was also assessed, and Gordonia sp. demonstrated its potential in removing the phytotoxicity of DMP and DBP.
Article
Engineering, Environmental
Priyanka Verma, Achlesh Daverey, Kusum Arunachalam
Summary: Microbial fuel cells (MFCs) have the potential to treat wastewater and recover energy. The proton exchange membrane (PEM) is a crucial component of MFCs, affecting its performance and cost. This study developed a low-cost membrane from forestry waste pine needles, by preparing pine needle biochar through pyrolysis and subsequent sulphonation. The resulting membrane, consisting of sulphonated pine needle biochar (SPB) mixed with montmorillonite clay (MMT), showed improved water uptake capacity and achieved high removal efficiency of chemical oxygen demand in MFCs, suggesting its viability as an affordable option for bioelectricity production.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Deepshikha Pandey, Achlesh Daverey, Kasturi Dutta, Kusum Arunachalam
Summary: Textile industries produce wastewater with harmful azo dyes that are known to be carcinogenic and mutagenic. This study evaluates the potential use of enzyme immobilized biochar for removing azo dyes from real and simulated textile effluents. The results show that the enzyme immobilized system can achieve high removal efficiency for individual azo dyes in the simulated effluent and for one dye peak in the real effluent. The presence of metabolite in the real effluent indicates the degradation of the dye. Therefore, enzyme immobilized biochar system can be used for simultaneous adsorption and degradation of toxic azo dyes from real effluents.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
