Article
Environmental Sciences
Bindiya Chauhan, Suneel Dodamani, Sumira Malik, Waleed Hassan Almalki, Shafiul Haque, R. Z. Sayyed
Summary: A microbial-driven approach is being used to treat, recycle, and manage pharmaceutical and personal care products (PPCPs) in order to mitigate water contamination. PPCPs are emerging contaminants that pose risks to ecosystems and human health. Bioremediation techniques using mixed cultures of bacteria, algae, and other microbes are effective in removing PPCPs from effluent.
ENVIRONMENTAL RESEARCH
(2023)
Article
Plant Sciences
Goncalo Silva, Moritz Bomer, Aliyu A. Turaki, Chukwuemeka K. Nkere, P. Lava Kumar, Susan E. Seal
Summary: Badnaviruses are serious pathogens of global crops, and their endogenous sequences pose challenges to nucleic acid-based diagnostic methods and international germplasm movement. Yam is a major affected food security crop, and this study developed a PCR-DGGE method to detect and analyze endogenous badnaviral sequences in yam.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Engineering, Environmental
Miguel Sanchis-Sebastia, Edvin Ruuth, Lars Stigsson, Mats Galbe, Ola Wallberg
Summary: The study evaluated the possibility of using acid hydrolysis to directly degrade cotton fibers in waste textiles to produce a glucose solution, demonstrating the potential for chemically recycling waste textiles via acid hydrolysis and achieving high glucose production.
Article
Energy & Fuels
Jun Wang, Xiaopeng Cao, Zhigang Sun, Hongxin Zhang
Summary: The feasibility of using biogas to enhance oil recovery in the hypersaline Qinghai oil field was studied. The use of molasses as a carbon source effectively promoted gas production. Addition of nitrate eliminated sulfate-reducing bacteria, which had a significant impact on the application of MEOR.
PETROLEUM SCIENCE AND TECHNOLOGY
(2023)
Article
Soil Science
Sara Peixoto, Jacinta M. M. Oliveira, Isabel Henriques, Rui G. Morgado, Amadeu M. V. M. Soares, Susana Loureiro
Summary: The study found that AgNPs affected the structure and tolerance of SBC, but did not increase tolerance on a second exposure. AgNO3 was more effective in inhibiting SBC growth than AgNPs, both in a dose-dependent manner.
APPLIED SOIL ECOLOGY
(2022)
Article
Environmental Sciences
J. J. Gonzalez-Cortes, A. Valle, M. Ramirez, D. Cantero
Summary: Nitrification-denitrification is an environmentally friendly and cost-effective method for treating landfill leachates. This study found that the nitritation rates of nitrifying biomass were reduced after adaptation to landfill leachates with heavy metals and high salt concentrations. The analysis of biomass samples revealed the presence of specific bacterial genera and families involved in nitritation and denitrification processes.
WASTE AND BIOMASS VALORIZATION
(2022)
Article
Environmental Sciences
Naiwen Chen, Yimin Xie, Zhiwei Liang, Hojae Shim
Summary: This study investigates the production of biodiesel from food waste and domestic wastewater using the oleaginous yeast Rhodosporidium toruloides under non-sterile conditions. The research shows that utilizing the mixture of effluents from local food waste treatment facilities and domestic wastewater can enhance the yield of biolipid production and wastewater treatment efficiency. The optimized hydrolysis process also enables the separation of waste oil without the need for solvents, and the resulting biolipid can meet the quality standards for biodiesel production.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Fisheries
Tolga Sahin, Sevdan Yilmaz, Irfan Selcuk Yazici, Selcuk Berber
Summary: The present study showed that dietary supplementation of PHB did not affect the growth parameters of rainbow trout fingerlings, but significantly reduced total coliform counts and increased intestinal villus length and width. This suggests that PHB can be used as an alternative microbial control agent for improving intestinal health in rainbow trout.
JOURNAL OF THE WORLD AQUACULTURE SOCIETY
(2021)
Article
Food Science & Technology
Mukesh Kumar Awasthi, Ayon Tarafdar, Vivek Kumar Gaur, K. Amulya, Vivek Narisetty, Dheeraj Kumar Yadav, Raveendran Sindhu, Parameswaran Binod, Taru Negi, Ashok Pandey, Zengqiang Zhang, Ranjna Sirohi
Summary: This review provides a comprehensive overview of the suitability of different biowaste resources for oligosaccharide production and critically analyzes recent updates and production methods. It also discusses the significant prebiotic potential of oligosaccharides in food applications and explores future prospects for advancement in the field.
INTERNATIONAL JOURNAL OF FOOD MICROBIOLOGY
(2022)
Article
Engineering, Environmental
Guan Wang, Kai Tang, Adam C. Hambly, Yifeng Zhang, Henrik Rasmus Andersen
Summary: This paper presents a new method for Fenton treatment of complex wastewater using a novel bioelectrode system. The new system eliminates the need for additional dosing of Fe(II) and H2O2, prevents iron-sludge accumulation, and reduces consumption of pH regulators. The experimental results demonstrate that the method is efficient in removing dissolved organic carbon and specific recalcitrant organics.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Ayesha Siddika, Ailar Hajimohammadi, Veena Sahajwalla
Summary: This research aims to develop a sustainable method to prepare lightweight glass foams using waste glass from the automotive vehicle industry. By utilizing a novel combined mechanical and chemical foaming technique, the gelation time can be reduced and the pore characteristics in glass foams can be improved. This ecofriendly foaming method is useful for producing glass foams in large scale with desirable properties.
RESOURCES CONSERVATION AND RECYCLING
(2023)
Article
Materials Science, Ceramics
Wenhao Li, Xiaoyan Zhang, Hanlin Shen, Junjie Yang, Ying Liu, Jun Liu, Ya-Nan Qu, Shengen Zhang, Jinlong Yang
Summary: A novel technique, hydrolysis-induced simultaneous foaming and coagulation casting method, is proposed to prepare hierarchically porous ceramics using secondary aluminum dross as the sole raw material. The utilization of harmful components in the dross allows for an alternative colloidal forming way to create porous green body with complex shape. The low sintering shrinkage of 1.38%-3.60% offers an effective and low-cost method for industrial production.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Yong Jin, Kasper D. de Leeuw, David P. B. T. B. Strik
Summary: This study presents the initial steps of a potential PHA recycling route by fermenting hydrolyzed PHA-based bioplastics into carboxylates acetate and butyrate. The alkaline pretreatment showed the highest hydrolysate yield. After filtration and mixed culture fermentation, acetate and butyrate were produced from the hydrolyzed PHA. The overall yields of the combined processes were calculated.
Article
Agricultural Engineering
Marthinus W. Myburgh, Lorenzo Favaro, Willem H. van Zyl, Marinda Viljoen-Bloom
Summary: This study demonstrates the recombinant expression of a fungal cutinase-like enzyme (CLE1) in yeast, which efficiently hydrolyses different types of PLA materials. This research highlights the potential of fungal hosts producing PLA hydrolases for future commercial applications in PLA recycling.
BIORESOURCE TECHNOLOGY
(2023)
Article
Environmental Sciences
H. Binner, N. Kamali, M. Harding, T. Sullivan
Summary: Dental materials are undergoing a revolution as traditional amalgam fillings are being replaced by resin formulations. These new materials may lead to higher concentrations of micro- and nanomaterials in wastewater streams and pose potential risks to the environment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Automation & Control Systems
Jangirala Srinivas, Ashok Kumar Das, Xiong Li, Muhammad Khurram Khan, Minho Jo
Summary: This article presents a new anonymous signature-based authenticated key exchange scheme for IoT-enabled smart grid environment, called AAS-IoTSG, which allows for dynamic smart meter addition. The security of AAS-IoTSG has been rigorously tested and the comparative study shows it has better security and functionality features with less communication and computation overheads compared to existing authentication mechanisms in smart grid systems.
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
(2021)
Article
Engineering, Electrical & Electronic
Jing Zhang, Yanxia Zhang, Lin Xiang, Yan Sun, Derrick Wing Kwan Ng, Minho Jo
Summary: This paper investigates optimal joint time, frequency, and power allocation for energy-efficient D2D communications in an overlay cellular network to maximize the system's EE. The study reveals that optimal energy-efficient D2D transmission should utilize all the harvested energy from each D2D transmitter.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2021)
Article
Computer Science, Information Systems
Anusha Vangala, Anil Kumar Sutrala, Ashok Kumar Das, Minho Jo
Summary: This article introduces a blockchain-based smart farming technology and authenticated key agreement protocol, supporting authentication and key negotiation between devices and between devices and gateway nodes, ensuring data persistence, transparency, and security. The research ensures the security of the proposed scheme through formal and informal security analysis, while also comparing its applicability and efficiency.
IEEE INTERNET OF THINGS JOURNAL
(2021)
Article
Environmental Sciences
Dae Wook Kim, Sung Il Yu, Kyuyong Im, Juhee Shin, Seung Gu Shin
Summary: This study assessed the impact of different coagulant types, dosages, and process conditions on phosphate removal efficiency. The results showed that PAC was the most effective coagulant, and a combination of PAC and FeCl3 may be beneficial. Furthermore, the dosage was found to be the most significant variable for phosphate removal efficiency.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Computer Science, Information Systems
Mohammad Wazid, Basudeb Bera, Ashok Kumar Das, Saraju P. Mohanty, Minho Jo
Summary: Smart vehicles support intelligent transportation system, but face security and privacy issues due to insecure communication. Hence, we propose a secure communication framework based on public blockchain to protect data security and privacy.
IEEE INTERNET OF THINGS JOURNAL
(2022)
Article
Microbiology
Hyeonjung Yu, Jaai Kim, Chaeyoung Rhee, Juhee Shin, Seung Gu Shin, Changsoo Lee
Summary: This study found that pH control strategies significantly influenced nutrient removal, microalgal and bacterial growth in anaerobic digestion effluent treatment. The dominance of Parachlorella in microalgal communities and the development of microalgae-associated bacterial community were observed under different pH conditions. More attention is needed on the influence and control of pH changes during cultivation in microalgal treatment of anaerobic digestion effluent.
Article
Energy & Fuels
Seung Gu Shin, Sang Hyeok Park, Seokhwan Hwang
Summary: The design of a full-scale bioprocess is usually based on parameters from smaller-scale experiments, but up-scaling waste-to-energy processes can lead to disagreements due to substrate fluctuations. This study monitored three full-scale anaerobic digesters treating food waste for five months and observed significant shifts in methanogen populations during stable operation.
Article
Engineering, Environmental
Sung Il Yu, Chaeyoung Rhee, Kyung Hwa Cho, Seung Gu Shin
Summary: Machine learning techniques were used to improve the accuracy of liquid level estimation in an anaerobic digester and optimize the number of sensors required. Four algorithms were compared, with artificial neural network and random forest models performing the best. Variable importance analysis showed that pressure readings from the top were the most significant, and the significance of other sensors varied depending on the model type. Sensors experiencing both headspace and liquid phase variations had higher errors. The results demonstrate the effectiveness of ML techniques in estimating digester liquid levels by optimizing sensor numbers and reducing error rates.
ENVIRONMENTAL ENGINEERING RESEARCH
(2023)
Article
Environmental Sciences
Seung Gu Shin, Su In Kim, Seokhwan Hwang
Summary: A demo-scale anaerobic digester treating food waste leachate was monitored during its startup period. The operation strategy was adjusted twice to recover the process from instability. Using sequencing batch operation, the process was able to recover and increase biogas yield.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Environmental Sciences
Shahbaz Raza, Kyeong Hwan Kang, Juhee Shin, Seung Gu Shin, Jihyun Chun, Hyun Uk Cho, Jingyeong Shin, Young Mo Kim
Summary: Antimicrobial resistance (AMR) is an ongoing pandemic that is spread silently. Wastewater treatment plants (WWTPs) serve as a potential source of antibiotic resistance genes (ARGs), which can pose a threat to public health. This study examined the changes in ARG abundance and microbial community structure in two WWTPs, revealing the importance of microbial communities in determining ARG abundance.
Article
Energy & Fuels
Hwijin Seo, Anna Joicy, Myoung Eun Lee, Chaeyoung Rhee, Seung Gu Shin, Si-Kyung Cho, Yongtae Ahn
Summary: Ultrasound and combined alkaline-ultrasound pretreatment (AUP) shown effective for disintegration of primary sewage sludge, and the degree of solubilization (DS) was evaluated. The pretreated primary SS then used in microbial electrolysis cells (MECs) to maximize methane production. The AUP achieved the highest DS of 67.2% and MEC reactors operated with the AUP achieved the highest methane production (240 +/- 6.4 mL g VSin-1). The AUP strategy could enhance anaerobic digestion performance and provide an economical way for treating primary SS.
Review
Computer Science, Theory & Methods
Sudeep Tanwar, Dakshita Ribadiya, Pronaya Bhattacharya, Anuja R. Nair, Neeraj Kumar, Minho Jo
Summary: Scientific publishing systems (SPS) provide a platform for authors, reviewers, and editors to share their research, leading to the advancement of the academic community. However, traditional SPS face challenges in managing large databases, complex queries and retrievals, lengthy publishing processes, and lack of rewarding methods for peer review and storage of unsuccessful articles. In this paper, a fusion of blockchain and IoT technologies is proposed to address these limitations and provide a secure, transparent, and efficient publishing platform.
FUTURE GENERATION COMPUTER SYSTEMS-THE INTERNATIONAL JOURNAL OF ESCIENCE
(2023)
Article
Thermodynamics
Chaeyoung Rhee, Sung-Gwan Park, Sung Il Yu, Tergel Dalantai, Juhee Shin, Kyu-Jung Chae, Seung Gu Shin
Summary: Considering the energy potential and anaerobic biodegradability, protein and lipid are found to be the most significant organic components in biogas feedstocks. The study analyzed the characteristics and biogas potential of ten model substrates and found that the methane production and production rate were higher in the lipid-rich substrates, while the lag phase was longer. The microbial community structure was clustered based on the organic majority and the energy analysis estimated different energy generation for protein-rich and lipid-rich substrates.
Article
Computer Science, Information Systems
Haneul Ko, Minho Jo, Victor C. M. Leung
Summary: This article proposes an application-aware migration algorithm with prefetching to minimize generated traffic volume and satisfy application requirements. It achieves this by optimizing the migration location and prefetching the core part of the service, taking into account the mobility of the mobile device and application type.
IEEE TRANSACTIONS ON CLOUD COMPUTING
(2022)
Article
Energy & Fuels
Myoung Eun Lee, Yongtae Ahn, Seung Gu Shin, Jae Woo Chung
Summary: The study tested the effect of applied voltage removal on microbial electrolysis cells treating sewage sludge. The results showed that not only MEC-0.3V but also MEC-OCV outperformed anaerobic digestion in terms of methane yield and productivity, and promotion persisted with MEC-derived inoculum for two batch cycles after removing the applied voltage.
