Article
Polymer Science
Cristina-Gabriela Grigoras, Andrei-Ionut Simion, Lidia Favier
Summary: A low-cost adsorbent made of cherry stones powder and chitosan was used to remove Reactive Black 5 dye from water. The spent material was regenerated using sodium hydroxide as the eluent. Response Surface Methodology-Box-Behnken Design was used to optimize the eluent volume, concentration, and desorption temperature. The findings support the suitability of the synthesized material as a dye adsorbent and its potential for efficient recycling and reuse.
Article
Biochemistry & Molecular Biology
Branka Vojnovic, Mario Cetina, Petra Franjkovic, Ana Sutlovic
Summary: The aim of this study was to investigate the influence of initial pH value on the isothermal adsorption of Reactive Black 5 dye on powdered activated carbon. The results showed that the initial pH value significantly affected the adsorption of RB5 dye onto activated carbon, with the highest adsorption capacities and decolouration efficiencies observed at pH(0) = 2.00 and 10.00.
Article
Materials Science, Multidisciplinary
Thi Sinh Vo, Tran Thi Bich Chau Vo
Summary: In this study, a composite sponge was developed by coating a biopolymer sponge with graphene oxide, which showed improved adsorption performance for organic dyes. The coated sponge had a higher maximum adsorption capacity compared to the uncoated sponge, and it could be regenerated and reused without significant loss of dye removal ability. This study provides a potential adsorbent with non-toxic materials and reliable recyclability.
PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
(2022)
Article
Biochemistry & Molecular Biology
Edwin A. Ofudje, Ezekiel F. Sodiya, Francis H. Ibadin, Abimbola A. Ogundiran, Samson O. Alayande, Oluremi A. Osideko
Summary: This study utilized low-cost sorbent powder obtained from agro-waste of poultry eggshells for adsorption of contaminants. The pH of the solution significantly influenced the removal of pollutants, with Langmuir monolayer adsorption capacity observed. Various models were used to elucidate the adsorption mechanism as chemisorption, with thermodynamic considerations providing insight into the process.
CHEMISTRY AND ECOLOGY
(2021)
Article
Engineering, Environmental
Rohith K. Ramakrishnan, Vinod V. T. Padil, Stanislaw Waclawek, Miroslav Cernik, Diwakar Tiwari
Summary: For the first time, a simple synthesis of an ionically cross-linked tree gum-based sponge with structural stability was investigated for effective cationic dye adsorption. The sponge showed a high adsorption capacity for the cationic dye methylene blue and exhibited recyclability without significant loss of efficiency. The pseudo-second order kinetics and the Langmuir adsorption isotherm were well fitted to the experimental results. This biodegradable adsorbent has promise for cost-effective wastewater treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Thi Sinh Vo, Tran Thi Bich Chau Vo
Summary: Graphene-based adsorbents have attracted extensive interest for their ability to adsorb organic dyes. In this study, a graphene oxide-covered melamine foam (GO-covered MF) was designed and prepared, showing excellent adsorption performances for various organic dyes. The hybrid foam (HF) exhibited a high adsorption capacity and could be reused without degradation, making it a promising candidate for practical applications.
PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
(2022)
Article
Nanoscience & Nanotechnology
Pham Kim Ngoc, Trung Kien Mac, Huu Tuan Nguyen, Do Thanh Viet, Tran Dang Thanh, Pham Van Vinh, Bach Thang Phan, Anh Tuan Duong, Raja Das
Summary: α-Fe2O3 and Fe3O4 nanoplates and nanorices synthesized by hydrothermal reaction show excellent potential in adsorption and removal of organic pollutants, with α-Fe2O3 nanoplates exhibiting high selectivity and adsorption capacity towards congo red dye, as well as excellent recyclability.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2021)
Article
Chemistry, Inorganic & Nuclear
Saade Abdalkareem I. Jasim, Nargiza Kamolova, Ghulam S. Yasin, Walid Kamal M. Abdelbasset, Usama Altimari, Yehya Ahmed, Peng Liu
Summary: This study investigated the structure, intermolecular forces, electronic features, and durability of complexes formed between Eriochrome black T dye (EBT) and BC3 nanotube (BC3NT) in a solution using density functional theory modeling. The results showed that the adsorption mechanism of EBT on BC3NT is mainly controlled by donor-acceptor interactions between EBT and the boron atom of the tube via its O atom. This study also demonstrated the significant impact of EBT on the electrical features of BC3NT, making them suitable for the adsorption process.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Applied
Sakonsupa Damdib, Nuttamon Vanichsetakul, Phanuwat Pimpapoat, Sergey Mikhalovsky, Rosa Busquets, Adisak Siyasukh, Nattaporn Tonanon
Summary: This work introduces the novel role of Fe(NO3)(3) as a chemical activator in carbonization of macadamia nutshell and successfully achieves magnetic mesoporous carbon. This carbon material has excellent adsorption performance and renewability, and is expected to be applied in wastewater treatment.
ADSORPTION SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Chemical
Zhong-dong Zhang
Summary: Peroxymonosulfate (PMS) catalysis based on S-doped graphene (S-GN) is an effective technology for treating azo dye wastewater, improving the generation of new surface defects and active sites through the introduction of sulfur functionalities. Under appropriate conditions, S-GN exhibits high degradation efficiency, excellent ion-tolerance performance, and cycle stability towards RBK5.
DESALINATION AND WATER TREATMENT
(2022)
Article
Chemistry, Physical
Ahmed M. El-Sherbeeny, Sherouk M. Ibrahim, Ali A. AlHammadi, Ahmed Tawhid Ahmed Soliman, Jae-Jin Shim, Mostafa R. Abukhadra
Summary: The beta-CD/D composite showed promising retention capacities for Cs+ and Ba2+ ions, higher than its components and other evaluated adsorbents, with Langmuir properties, Pseudo-Second order kinetics, and Gaussian energies less than 8 KJ/mol.
SURFACES AND INTERFACES
(2021)
Article
Environmental Sciences
Nain Tara, Mazhar Iqbal, Fazal-e Habib, Qaiser Mahmood Khan, Samina Iqbal, Muhammad Afzal, Hans Brix
Summary: The study successfully degraded RB5 dye using a bacteria-augmented floating treatment wetlands system, revealing the non-toxicity of the metabolites produced. This method could be a promising option for azo dye treatment and may contribute to improving overall textile effluent cleanup processes.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Hui Zhao, Junshan Yang, Zihan Zhang, Liu Yang, Fangjie Song, Enwei Zhang, Jinxun Wang, Qian Zhang, Yunyan Liu, Jiutao An, Zilin Meng
Summary: This study synthesized a three-dimensional network structure catalyst 3D-rGO/BP/ZnO with the properties of easy separation and recycle, which exhibited synergistic effect between adsorption and photocatalysis. The adsorption experiments showed that the pseudo-second-order kinetic model and Freundlich model were appropriate for describing adsorption behavior. The photocatalytic experiment revealed that 3D-rGO/7-BP/ZnO had the best photocatalytic performance, degrading 93.0% of RhB in 120 min. 3D-rGO/BP/ZnO heterostructure could boost the separation of photogenerated electrons and holes, and superoxide radicals (.O-2) were the main active species. After three catalytic cycles, the photocatalysts exhibited excellent stability. This study offered a fresh perspective on the effective use of photocatalyst in environmental rehabilitation.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Engineering, Environmental
Abdul Ghaffar, Mujahid Mehdi, Aijaz Ali Otho, Uroosa Tagar, Raheel Ahmed Hakro, Sadam Hussain
Summary: This study reports the fabrication of electrospun silk nanofibers membranes for textile dye adsorption, desorption, and reusability. The membranes showed efficient adsorption capacity for Reactive Black 5 dye and can achieve 20-time cyclic adsorption-desorption.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Inorganic & Nuclear
Imran Khan Rind, Ahmet Sari, Mustafa Tuzen, Muhammad Farooque Lanjwani, Tawfik A. Saleh
Summary: Due to the high demand for clean water, there is a continued need for water treatment. In this study, graphene nanoplatelets modified with silicon dioxide nanoparticles were used for the adsorption of methylene blue from wastewater. Experimental and statistical analyses showed that the GNP-SiO2 nanocomposite exhibited good adsorption performance and could effectively remove MB dye from aqueous solutions.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
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
Thermodynamics
Edwin Jia Chiet Choo, Xinwei Cheng, Gianfranco Scribano, Hoon Kiat Ng, Suyin Gan
Summary: This study numerically investigates the soot characteristics of pure n-dodecane and its blends with n-butanol at different blending ratios and ambient temperatures. The results show that increasing the n-butanol blending ratio and decreasing the ambient temperature lead to a decrease in soot volume fraction and soot particle size. The findings suggest that both soot formation and oxidation mechanisms are suppressed at higher n-butanol blending ratio and lower ambient temperature, with the formation mechanism having a more dominant role.
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
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
Thermodynamics
Mohammad Zandie, Hoon Kiat Ng, Mohd Farid Muhamad Said, Xinwei Cheng, Suyin Gan
Summary: CFD simulations were conducted to study the effects of fuel blending ratio, exhaust gas recirculation (EGR), and start of injection (SOI) on the combustion, emissions, engine output, and fuel efficiency of a compression ignition engine. The results showed that the D65|BD20|G15 mixture achieved the lowest nitrogen oxides (NOx) and soot emissions, while the D75|BD20|G5 mixture had the lowest carbon monoxide (CO) and unburnt hydrocarbons (UHCs) emissions. The application of 20% EGR reduced NOx and soot, but increased UHCs and CO emissions. Advancing the SOI timing decreased CO and UHCs emissions. A multi-parameter optimization was performed to determine the best operating condition.
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
Materials Science, Multidisciplinary
Maxine Yew, Chang Nong Lim, Boon Aik Liam, Kai Seng Koh, Siew Shee Lim, Billie Hiew, Ju Yen Fu
Summary: Type II diabetes mellitus (T2DM) affects over a tenth of the Malaysian population, and saponin, a traditional herbal extract, has been found to be an effective treatment with milder toxicity compared to conventional anti-diabetic drugs. This research focuses on developing an efficient drug delivery system using chitosan milli-particles (CPs) to target the release of saponin in the digestive system. Swelling tests and in vitro studies conducted on saponin-immobilized CPs (SICPs) suggest that the release of saponin is influenced by Fickian diffusion and the swelling of the chitosan milli-particle matrix at different pH levels.
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
Xu Yang, Jieshi Xiao, Jian Huang, Kaixiang Peng
Summary: This study introduces an online convolutional adversarial autoencoder (AAE) model to learn representative industrial process information. By extracting features that reflect diverse information and follow a Gaussian distribution, the model improves the accuracy of fault detection and removes redundant information through a feature selection strategy.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2024)
Article
Engineering, Chemical
Shao-Yang Wu, Meng-Tsun Lai, Chung-Hui Hsu, Kevin C. W. Wu, Yesong Gu
Summary: This study investigated the effectiveness of using Fe-based MOF or MIL-100(Fe) in conjunction with a PEDOT-modified Pt electrode for detecting the synthetic azo dye tartrazine. By modifying the electrode with two different methods, favorable lower reductive potentials, competitive sensitivities, and good repeatability and stability were achieved in all MIL-100(Fe)/PEDOT/Pt electrodes.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2024)
