Article
Chemistry, Physical
Wen-Hai Zhang, Ming-Jie Yin, Cheng-Gang Jin, Zhi-Jie Liu, Naixin Wang, Quan-Fu An
Summary: The ice-crystal templating approach can tailor the mass transfer channels of GO membranes, resulting in improved water permeability and separation performance.
Article
Biochemistry & Molecular Biology
Zhenyu Jing, Yanhui Li, Yang Zhang, Kewei Chen, Yaohui Sun, Mingzhen Wang, Bing Chen, Shiyong Zhao, Yonghui Jin, Qiuju Du, Xinxin Pi, Yuqi Wang
Summary: A chitosan/alginate/graphene oxide/UiO-67 (CS/SA/GO/UiO-67) amphoteric aerogel was synthesized and characterized using various techniques. The adsorption properties of CS/SA/GO/UiO-67 for complex dyes wastewater were compared, with Langmuir isotherm model predicting high adsorption quantities. The adsorption mechanism was determined to be dependent on bonding, hydrogen bonding, and electrostatic attraction. Repeatable experiments showed significant removal rates for the target dyes.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Physical
Konstantinos N. Maroulas, Dimitrios G. Trikkaliotis, Zoi S. Metaxa, Naglaa Abdelall, Abdullah Alodhayb, Ghada A. Khouqeer, George Z. Kyzas
Summary: The study recommends the use of biopolymer-derived aerogels to address oil spills. The aerogels demonstrated high absorption capacity for both water and diesel oil, and they can be effectively used for the oil/water separation process.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Environmental Sciences
Mingyue Han, Baiheng Xu, Mengru Zhang, Jingye Yao, Qian Li, Weifeng Chen, Weizhi Zhou
Summary: Biologically reduced graphene oxide was synthesized by bacterium Shewanella sp. a-8-6 in 12 hours, and a 3D poly(vinyl alcohol)/BRGO aerogel (PVA-GA) was further prepared for efficient dye removal in wastewater treatment. The PVA-GA exhibited strong mechanical strength and good adsorption performance for methylene blue and Congo red, with a potential to be a green and safe adsorbent.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Physical
Le Minh Huong, Doan Ba Thinh, Tran Hoang Tu, Nguyen Minh Dat, Tran Thi Hong, Phan Thi Ngoc Cam, Dinh Ngoc Trinh, Hoang Minh Nam, Mai Thanh Phong, Nguyen Huu Hieu
Summary: In this study, graphene oxide aerogel (GOA) was synthesized through ice segregation induced self-assembly of GO sheets. GOA showed high adsorption capacities for heavy metal ions and phenolic compounds, with adsorption processes fitting well with pseudo-second-order kinetics and Langmuir isotherm models. The main interaction between GOA and Cd2+, Ni2+ was electrostatic attraction. The study indicates the potential of GOA as a highly efficient adsorbent for water treatment.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Physical
Yawei Shi, Guobin Song, Anqi Li, Jun Wang, Haonan Wang, Ya Sun, Guanghui Ding
Summary: A series of composite aerogels were prepared from graphene oxide and chitosan with different precursor mass ratios, and their adsorption properties for methyl orange and methylene blue were investigated. The aerogel prepared at GO:CS = 1:2 (w/w) showed optimal compromise between adsorption and mechanical properties. The pH-responsive feature of the aerogel for single dye adsorption was observed, with selective adsorption at low pH and synergistic adsorption at high initial concentration in the binary system.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Chemical
Mai Lien Tran, Thi Tuong Van Tran, Ruey-Shin Juang, Chi Hieu Nguyen
Summary: In this study, chitosan (CS) and graphene oxide (GO) were combined to synthesize CS/GO composites with different GO contents. The combination of CS and GO not only improved the surface area by reducing agglomeration of GO sheets, but also significantly enhanced the adsorption capacity of cationic dye on CS. The Langmuir adsorption capacity of methylene blue (MB) reached 259.5 mg/g at pH 8 and 30 degrees C for the CS/GO12 material. The composite showed good adsorption-regeneration performance.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Polymer Science
Alexandra Yu. Kurmysheva, Oleg Yanushevich, Natella Krikheli, Olga Kramar, Marina D. Vedenyapina, Pavel Podrabinnik, Nestor Washington Solis Pinargote, Anton Smirnov, Ekaterina Kuznetsova, Vladislav V. Malyavin, Pavel Peretyagin, Sergey N. Grigoriev
Summary: This study proposes new aerogels based on graphene oxide for adsorbing salicylic acid and herbicide from aqueous media. By conducting experiments and analyzing the data, it was found that the equilibrium of adsorption is reached in 150 minutes. Various models were used to describe the adsorption kinetics and equilibrium isotherms.
Article
Chemistry, Applied
Leilei Jiang, Xuebing Hu, Boshen Yang, Zhiyong Yang, Chuanbiao Lu
Summary: Diethylene triamine (DETA) reduced graphene oxide aerogel (DRA) was prepared by self-assembly and freeze-drying method. The effects of reduction temperature and DETA concentration on the performance of the aerogel were investigated. The results showed that DRA-8 obtained at a DETA concentration of 16 mu L/mL and a reduction temperature of 95 degrees C had a low density of 11.15 mg/cm³ and abundant macro-pores between 10 and 100 mu m in size. The adsorption capacities of DRA-8 for methyl orange (MO) and methylene blue (MB) were found to be 227.24 and 266.82 mg/g, respectively, under different process conditions. The thermodynamics analysis indicated that the adsorption process was spontaneous.
JOURNAL OF POROUS MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Alina Pruna, Alfonso Carcel, Adolfo Benedito, Enrique Gimenez
Summary: This study introduces a novel approach to modify graphene aerogels by using a combined solvothermal synthesis-freeze-casting method to obtain PAMAM dendrimer-modified rGO aerogels. The properties of the aerogels are found to be strongly correlated with the synthesis conditions, with the best CO2 adsorption performance exhibited by aerogels modified with higher generation dendrimers under specific conditions.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Applied
Kunqi Cai, Meixia Zheng, Hui Xu, Yujing Zhu, Longtao Zhang, Baodong Zheng
Summary: Stable gellan gum (GG)/graphene oxide (GO) aerogels with different pore structures were prepared by freeze-drying a mixture of GG and GO, showing excellent performance in methylene blue adsorption. The adsorption process was found to be spontaneous, exothermic, and entropy-increasing. GG/GO aerogels exhibited faster adsorption kinetics and higher adsorption capacity for removing MB from aqueous solutions.
CARBOHYDRATE POLYMERS
(2021)
Article
Engineering, Environmental
Yongmin Zhang, Shanjuan Zhao, Meng Mu, Lushan Wang, Ye Fan, Xuefeng Liu
Summary: In this study, a novel aerogel with high adsorption efficiency and good thermal stability was developed for removing methylene blue and eutrophication ions from wastewater. With the addition of ferrocene groups, the aerogel not only showed excellent adsorption performance, but also provided a catalytic ability for dye degradation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Thi Sinh Vo, Muhammad Mohsin Hossain, Tae Gyeong Lim, Ji Won Suk, Sun Choi, Kyunghoon Kim
Summary: In this study, the interfacial surface of glass fiber was modified using a graphene oxide/chitosan hybrid network for the first time to fabricate a composite membrane for waste-water treatment applications. The composite membrane exhibited excellent adsorption performance and recycling performance in removing cationic and anionic dyes. The adsorption performance was consistent with chemical adsorption and monolayer approach models.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Electrochemistry
Muhammad Kamran Hakeem, Afzal Shah, Jan Nisar, Faiza Jan Iftikhar, Sher Bahadar Khan, Iltaf Shah
Summary: The discharge of dye loaded effluents from textile and food industries into natural water is a growing concern due to its detrimental effects on human and aquatic life. This study presents the design and optimization of an electrochemical sensor using a modified glassy carbon electrode with amine functionalized multi-walled carbon nanotubes (NH2-fMWCNTs) for the detection of a low concentration of the illegal azo dye Metanil Yellow. The results demonstrate the promising application of the sensor in catalytic degradation of the dye, supported by UV-visible spectroscopic analysis.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Biochemistry & Molecular Biology
Wenkun Zhang, Ting Huang, Yu Ren, Yilei Wang, Ruijin Yu, Jinyi Wang, Qin Tu
Summary: The Chitosan crosslinked with MOF-199@aminated graphene oxide aerogel was prepared as an adsorbent for formaldehyde and methyl orange. Characterization and stability tests showed that the aerogel had good adsorption capacity and stability. Adsorption of pollutants followed Freundlich isotherm model and pseudo-second-order model for kinetic behavior.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Thermodynamics
Mohammad Zandie, Hoon Kiat Ng, Suyin Gan, Mohd Farid Muhamad Said, Xinwei Cheng
Summary: In this research, a MIMO-ANN is developed to model the characteristics of diesel-biodiesel-gasoline mixtures and predict engine performance and stability, emissions, combustion and ignition characteristics. By performing sensitivity analysis and outlier detection on the less-effective inputs/data points, accurate predictions are obtained.
Article
Environmental Sciences
Nicholas Yung Li Loh, Hui Ying Pang, Wan Ting Tee, Billie Yan Zhang Hiew, Svenja Hanson, Siewhui Chong, Suchithra Thangalazhy-Gopakumar, Suyin Gan, Lai Yee Lee
Summary: The production and disposal of plastics have become a major global concern due to their non-biodegradable properties. This study explores the conversion of apple waste into bioplastic, offering a solution to waste disposal issues. The results show that incorporating apple waste and delignification enhances the storage modulus and brittleness of the bioplastic. The integration of apple waste promotes biodegradability, making it a potential material for various applications.
WASTE AND BIOMASS VALORIZATION
(2023)
Article
Environmental Sciences
Jia Yong Tang, Boaz Yi Heng Chung, Jia Chun Ang, Jia Wen Chong, Raymond R. R. Tan, Kathleen B. B. Aviso, Nishanth G. G. Chemmangattuvalappil, Suchithra Thangalazhy-Gopakumar
Summary: Biochar is a high-carbon-content organic compound with potential applications in energy storage and conversion. The relationship between biomass type, operating conditions, and biochar properties is crucial for large-scale biochar production. Machine learning-based data analysis is necessary to establish this relationship. In this study, a rough set-based machine learning approach was used to generate decision rules and classify biochar properties.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Thermodynamics
Mintallah Mousa A. Allouzi, Lai Yee Lee, Suyin Gan, Suchithra Thangalazhy-Gopakumar
Summary: Olive Pomace (OP) biomass has high potential for biofuel production. Dry torrefaction of OP in an inert environment was conducted at temperatures ranging from 200-290 degrees C. The study also investigated the torrefaction of OP blended with Low-Density Polyethylene (LDPE) at different ratios and analyzed the product yield and characteristics. The results showed that as temperature increased, the mass yield of torrefied OP decreased while the higher heating value (HHV) increased. Additionally, the mass yield and HHV of the OP-LDPE blends increased with the increase in LDPE content.
THERMOCHIMICA ACTA
(2023)
Article
Engineering, Chemical
Mustapha Danladi Ibrahim, Rui Hong Teoh, Yousif Abdalla Abakr, Lai Yee Lee, Suyin Gan, Suchithra Thangalazhy-Gopakumar
Summary: This study focused on the analysis and torrefaction of shea nut chaff (SNC) biomass. The wet torrefaction process was carried out at different temperatures, residence times, and water-to-biomass ratios. Characterization studies showed that torrefied SNC had improved properties compared to raw SNC, making it a potential bioenergy source. However, high ash content remains a major concern.
ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Agricultural Engineering
Jia Chun Ang, Jia Yong Tang, Boaz Yi Heng Chung, Jia Wen Chong, Raymond R. Tan, Kathleen B. Aviso, Nishanth G. Chemmangattuvalappil, Suchithra Thangalazhy-Gopakumar
Summary: Biochar can be utilized for environmental remediation and improving soil quality through carbon sequestration. However, the relationship between biochar surface properties, biomass physiochemical properties, and pyrolysis conditions is not well-established. Machine learning algorithms, such as rough set machine learning, can help in predicting biochar surface properties based on decisional attributes.
BIOMASS & BIOENERGY
(2023)
Article
Engineering, Chemical
Boaz Yi Heng Chung, Jia Chun Ang, Jia Yong Tang, Jia Wen Chong, Raymond R. Tan, Kathleen B. Aviso, Nishanth G. Chemmangattuvalappil, Suchithra Thangalazhy-Gopakumar
Summary: Biochar pH and stability are important properties for its application as a carbon dioxide adsorbent and soil fertility enhancer. In this study, a rough set machine learning model was developed to quantify the relationship between feedstock composition, pyrolysis operating parameters and biochar properties. The model provided insights on the optimal process conditions to obtain biochar with desired properties.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Engineering, Chemical
Wan Ting Tee, Nicholas Yung Li Loh, Billie Yan Zhang Hiew, Wee Siong Chiu, Poi Sim Khiew, Suchithra Thangalazhy-Gopakumar, Suyin Gan, Lai Yee Lee
Summary: A new 3D-CTG system was developed using an ecofriendly ice-segregation method to remove malachite green (MG) and crystal violet (CV) dyes from polluted water. The system showed the formation of lamellar porous networks and abundant chemical functional groups. The optimized parameters achieved high removal rates for both CV and MG dyes, and the saturated 3D-CTG adsorbent showed recyclability with decent re-generation efficiencies.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Environmental Sciences
Wan Ting Tee, Nicholas Yung Li Loh, Billie Yan Zhang Hiew, Pau Loke Show, Svenja Hanson, Suyin Gan, Lai Yee Lee
Summary: Three-dimensional heteroatom-doped graphene is an effective approach for treating pharmaceutical wastewater due to its excellent adsorption and physicochemical properties. A boron-doped graphene oxide composite was successfully synthesized and showed promising adsorption performance for removing amitriptyline from contaminated water.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Chemistry, Analytical
Wan Ting Tee, Jasmine Chua, Jia En Yong, Billie Yan Zhang Hiew, Suyin Gan, Lai Yee Lee
Summary: This study focuses on synthesizing a novel graphene-based adsorbent to remediate Amitriptyline residue in the aquatic ecosystem. The as-synthesized adsorbent showed high adsorption performance and potential large-scale application, making it an effective system for removing Amitriptyline in water.
Article
Biotechnology & Applied Microbiology
Weng Fu, Shengbo Wu, Chun Wang, Suchithra Thangalazhy-Gopakumar, Urvi Kothari, Suan Shi, Lujia Han
Summary: This research investigated the alkaline deacetylation of corn stover to remove acetyl groups and reduce the toxicity of the prehydrolysate. The deacetylation process was optimized, and the results showed that it could effectively reduce the acetyl content while minimizing hemicellulose loss.
BIOENGINEERING-BASEL
(2023)
Article
Engineering, Chemical
Ramanath Tamelarasan, Newton Well Lo, Kasturi Muthoosamy, Suchithra Thangalazhy-Gopakumar
Summary: This study focuses on the synthesis of H-doped WO3 at ambient conditions for detecting acetone gas in the breath of diabetic patients. The results show that hydrogen doping increases the conductivity of WO3 and allows for acetone detection at room temperature.
ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Agricultural Engineering
Yinping Xiang, Meiying Jia, Rui Xu, Jialu Xu, Lele He, Haihao Peng, Weimin Sun, Dongbo Wang, Weiping Xiong, Zhaohui Yang
Summary: This study investigated the impact of the non-antibiotic pharmaceutical carbamazepine on antibiotic resistance genes (ARGs) during anaerobic digestion. The results showed that carbamazepine induced the enrichment of ARGs and increased the abundance of bacteria carrying these genes. It also facilitated microbial aggregation and intercellular communication, leading to an increased frequency of ARGs transmission. Moreover, carbamazepine promoted the acquisition of ARGs by pathogens and elevated their overall abundance.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Weixin Zhao, Tianyi Hu, Hao Ma, Dan Li, Qingliang Zhao, Junqiu Jiang, Liangliang Wei
Summary: This review summarizes the effects and potential mechanisms of biochar on microbial behavior in AD systems. The addition of biochar has been found to promote microbial colonization, alleviate stress, provide nutrients, and enhance enzyme activity. Future research directions include targeted design of biochar, in-depth study of microbial mechanisms, and improved models.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Christina Karmann, Anna Magrova, Pavel Jenicek, Jan Bartacek, Vojtech Kouba
Summary: This review assesses nitrogen removal technologies in reject water treatment, highlighting the differences in environmental impacts and economic benefits. Partial nitritation-anammox shows potential for economic benefits and positive environmental outcomes when operated and controlled properly.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Wei-Hao Huang, Ying-Ju Chang, Duu-Jong Lee
Summary: This study modified pinecone biochar with layered double hydroxide (LDH) to enhance its adsorption capacity for heavy metal and phosphate ions. The LDH-biochar showed significantly improved adsorption capacities for Pb2+ and phosphate, and a slight increase for Cu2+ and Co2+. The LDH layer enhanced the adsorption through various mechanisms.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Chao Song, Fanfan Cai, Shuang Yang, Ligong Wang, Guangqing Liu, Chang Chen
Summary: This paper developed a machine learning model to predict the biochemical methane potential during anaerobic digestion. Model analysis identified lignin content, organic loading, and nitrogen content as key attributes for methane production prediction. For feedstocks with high cellulose content, early methane production is lower but can be improved by prolonging digestion time. Moreover, lignin content exceeding a certain value significantly inhibits methane production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sang Min Lee, Ju Young Lee, Ji-Sook Hahn, Seung-Ho Baek
Summary: This study successfully developed an efficient platform strain using Yarrowia lipolytica for the bioconversion of renewable resources into adipic acid, achieving a remarkable increase in production level.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sefkan Kendir, Matthias Franzreb
Summary: This study presents a novel approach using magnetic separation to efficiently harvest freshwater microalgae, Chlorella vulgaris. By combining pH-induced calcium phosphate precipitation with cheap natural magnetite microparticles, harvesting efficiencies up to 98% were achieved in the model medium.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Ishaq Kariim, Ji-Yeon Park, Wajahat Waheed Kazmi, Hulda Swai, In-Gu Lee, Thomas Kivevele
Summary: The impact of reaction temperature, residence time, and ethanol: acetone on the energy compositions and yield enhancement of biocrudes was investigated. The results showed that under appropriate conditions, biocrudes with high energy and low oxygen content can be obtained, indicating a high potential for utilization.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xiyue Zhang, Xiyao Li, Liang Zhang, Yongzhen Peng
Summary: Intermittent aeration is an innovative approach to enhance nitrogen removal in low carbon-to-nitrogen ratio municipal sewage, providing an efficient strategy for the continuous plug-flow AOA process.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xu Yang, Mahmoud Mazarji, Mengtong Li, Aohua Li, Ronghua Li, Zengqiang Zhang, Junting Pan
Summary: This study investigated the impact of magnetite on the nitrogen cycle of pig manure biostabilisation. The addition of magnetite increased N2O emissions and decreased NH3 emissions during composting. It also increased the total nitrogen content but should be considered for its significant increase in N2O emissions in engineering practice.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Ty Shitanaka, Haylee Fujioka, Muzammil Khan, Manpreet Kaur, Zhi-Yan Du, Samir Kumar Khanal
Summary: The market value of microalgae has exponentially increased in the past two decades, thanks to their applications in various industries. However, the supply of high-value microalgal bioproducts is limited due to several factors, and strategies are being explored to overcome these limitations and improve microalgae production, thus increasing the availability of algal-derived bioproducts in the market.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Martin Kerner, Thorsten Wolff, Torsten Brinkmann
Summary: The efficiency of using enriched CO2 from flue gas for large-scale production of green microalgae has been studied. The results show that the use of membrane devices and static mixers can effectively improve the CO2 recovery rate and maintain the suitable pH and temperature during cultivation, achieving a more economical and sustainable microalgae production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rui Ma, Ji Li, Rd Tyagi, Xiaolei Zhang
Summary: This review summarizes the microorganisms capable of using CO2 and CH4 to produce PHAs, illustrating the production process, factors influencing it, and discussing optimization techniques. It identifies the challenges and future prospects for developing economically viable PHAs production using GHGs as a carbon source.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Bing Wang, Peng Zhang, Xu Guo, Xu Bao, Junjie Tian, Guomin Li, Jian Zhang
Summary: The addition of zeolite in the co-composting of chicken manure and straw significantly reduced the emissions of ammonia and N2O, and increased the nitrate content. Zeolite also promoted the abundance of nitrification genes and inhibited the expression of denitrification genes.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rohit Dey, Franziska Ortiz Tena, Song Wang, Josef Martin Messmann, Christian Steinweg, Claudia Thomsen, Clemens Posten, Stefan Leu, Matthias S. Ullrich, Laurenz Thomsen
Summary: This study investigated the operation of a 1000L microalgae-based membrane photobioreactor system for continuous secondary wastewater treatment. The research focused on a green microalgae strain called Desmodesmus sp. The study aimed to understand key trends and optimization strategies by conducting experiments in both summer and winter seasons. The findings showed that maintaining low cell concentrations during periods of light inhibition was beneficial for nutrient uptake rates. Effective strategies for enhancing algae-based wastewater treatment included cell mass recycling and adjusting dilution rates based on light availability.
BIORESOURCE TECHNOLOGY
(2024)
