Article
Engineering, Environmental
Muhammad Sajid Imran, Tariq Javed, Isham Areej, Muhammad Nouman Haider
Summary: This study explores the effectiveness of coconut husk for crystal violet dye sequestration, with maximum removal of 81% occurring at optimized conditions. The rough and porous nature of coconut husk, along with specific functional groups, are found to be responsible for the adsorption of dye.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Sousan Hadi, Ensiyeh Taheri, Mohammad Mehdi Amin, Ali Fatehizadeh, Tejraj M. Aminabhavi
Summary: This study focused on the use of magnetized activated carbon pomegranate husk for the adsorption of 4-chlorophenol from synthetic wastewater. The results showed that adsorption efficiency was highly dependent on ionic strength, solution pH, and temperature, with equilibrium being reached in 60 minutes. Kinetic models and equilibrium isotherms were used to assess the adsorption data, with the Liu model showing the best fit and providing maximum adsorption capacities for different MPHAC concentrations.
Article
Engineering, Environmental
R. Sangeetha Piriya, Rajamani M. Jayabalakrishnan, M. Maheswari, Kovilpillai Boomiraj, Sadish Oumabady
Summary: This study focused on the activation of coconut-based agricultural wastes as an alternative adsorbent for removing pollutants from industrial effluents. The activated carbon exhibited a high specific surface area and stability, showing significant dye adsorption for malachite green removal. The experimental data fit the Freundlich isotherm model well, indicating the potential of the carbon material as an alternative energy source.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Inorganic & Nuclear
Deepmoni Brahma, Harshajit Nath, Debasis Borah, Mandira Debnath, Hemaprobha Saikia
Summary: In this study, a new composite material was designed using coconut husk ash as the supporting material for CoAl layered double hydroxide, and its adsorptive removal of an organic dye from aqueous media was investigated. The experimental results showed that the composite material exhibited high removal efficiency and adsorption capacity under specific conditions, and it possessed favorable thermodynamic and kinetic properties, making it suitable for dye treatment.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Engineering, Environmental
Wenli Bai, Miaomiao Qian, Quanxiang Li, Steve Atkinson, Bin Tang, Yanchao Zhu, Jinfeng Wang
Summary: This study investigated the adsorption behaviors of ammonia onto different biomass rice husk-based adsorbents, revealing their adsorption capacities, kinetic data, and thermodynamic activation parameters. Possible adsorption mechanisms involving chemisorption based on Lewis acid-base reaction were proposed, contributing to the design of efficient adsorbents for VOCs and odors removal and air pollution control.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Energy & Fuels
Paula F. Pinheiro Nascimento, Eduardo L. Barros Neto
Summary: The hydrothermal pretreatment steam explosion on coconut husk powder enhanced the adsorption efficiency of Cu(2+)and Cd(2+), increased crystallinity and porosity, effectively removing metal ions.
BIOENERGY RESEARCH
(2021)
Article
Water Resources
Abdullah Al Ashik, Md. Ataur Rahman, Debadas Halder, Md. Mufazzal Hossain
Summary: This study investigated the adsorption of methylene blue (MB) onto coconut coir dust using batch method. The results showed that the pH(zpc) of the adsorbent was 7.65 (+/- 0.05) and the adsorption followed pseudo-second order kinetic model. The maximum adsorption occurred at pH 9.0 under alkaline condition. The adsorption capacity increased with temperature and the Langmuir isotherm best fit the experimental data. The system was found to be spontaneous and endothermic at pH 7.68.
APPLIED WATER SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Zhihua Deng, Qiuhan Zhang, Qing Deng, Zhanhu Guo, Ilwoo Seok
Summary: In this study, the impregnation method was used to modify coconut shell activated carbon for purifying acetone exhaust gas. The results showed that 1% KOH modified activated carbon exhibited the highest adsorption performance, with the Langmuir adsorption isotherm model and Bangham kinetic model fitting the adsorption process well.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Biotechnology & Applied Microbiology
Rong Huang, Yong Xu, Boris N. Kuznetsov, Meitao Sun, Xin Zhou, Jing Luo, Kankan Jiang
Summary: Polyvinyl alcohol (PVA) hydrogels were mechanically enhanced by adding lignin-rich nanocellulose (LCN), soluble ash (SA), and montmorillonite (MMT) for effective dye removal. The hybrid hydrogels incorporating 33.3 wt% of LCN exhibited a 163.0% increase in storage modulus compared to the PVA/0LCN-33.3SM hydrogel. LCN can be incorporated into PVA hydrogel to modify its rheological properties. Furthermore, the hybrid hydrogels showed high efficiency in removing methylene blue from wastewater due to the synergistic effects of PVA matrix, embedded LCN, MMT, and SA.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Engineering, Chemical
Chaiyot Tangsathitkulchai, Suravit Naksusuk, Atichat Wongkoblap, Poomiwat Phadungbut, Prapassorn Borisut
Summary: The study investigated the equilibrium and kinetics of CO2 adsorption by coconut-shell activated carbon impregnated with sodium hydroxide at 273 K. The CO2 adsorption increased with NaOH loading and exhibited three distinctive regions. The results showed an empirical correlation between effective pore diffusivity, CO2 adsorption, and NaOH loading.
Article
Chemistry, Physical
Yarui Zhou, Zilong Li, Lili Ji, Zhen Wang, Lu Cai, Jian Guo, Wendong Song, Yaning Wang, Alexander M. Piotrowski
Summary: Novel N-doped biochar (AKB) nanomaterials derived from raw kelp root exhibited excellent adsorption performance for cationic dye removal, with high specific surface area and abundant functional groups, suitable for dye wastewater treatment applications.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Environmental
Pushpraj Patel, Shubhi Gupta, Prasenjit Mondal
Summary: The study used waste biomass-derived activated carbon to remove COD, BOD, and TDS from greywater samples. The optimal adsorption capacities were observed under different flow rates and bed heights.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Zakir Sabara, Aswariani Anwar, Setyawati Yani, Kusnul Prianto, Rahmad Junaidi, Rofiqul Umam, Rizqi Prastowo
Summary: This study focuses on treating greywater in Makassar city to speed up the water cycle and enable reuse as an environmental conservation strategy. The use of a wastewater treatment installation successfully reduced greywater pollution and met the environmentally safe wastewater standards.
Article
Biochemistry & Molecular Biology
Zanaharyatini Nasrun, Liyana Syafawati Osman, Nur Hanis Abd Latif, Nur Hanani Hazirah Elias, Mokhtar Saidin, Shaiful Shahidan, Siti Halimah Angele Abdullah, Nurul Ain Ali, Siti Syahirah Mohd Rusli, Mohamad Nasir Mohamad Ibrahim, Pandian Bothi Raja, Mohammad Anwar Mohamed Iqbal, Djalal Trache, M. Hazwan Hussin
Summary: A rust powder collected from an archeological iron was evaluated through complementary analyses. Lepidocrocite was identified as the major component. The lignin extracted from coconut husk showed potential as an environmentally friendly alternative, with soda lignin displaying superior antioxidant capabilities compared to organosolv lignin. The rust conversion study found that 5 wt% of soda lignin achieved the highest conversion rate.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Materials Science, Multidisciplinary
Satoru Takahama, Masaki Kitamura, Yuki Ide, Kazuo Umemura
Summary: In this study, we compared the synthesis of carbon quantum dots (CQDs) from plain coconut husks and husk-derived charcoal using the autoclave method. The CQDs obtained from charcoal husk showed higher concentrations compared to plain husk, and exhibited different characteristics in terms of excitation and emission spectra. The response of CQDs to pH variation was opposite between the two types, while there was no difference in temperature dependence. Furthermore, the quenching effect on the self-fluorescence of papain enzyme was observed with CQDs derived from plain husk but not with CQDs derived from charcoal husk.
Article
Engineering, Environmental
Shun-Shun Chen, Xu-Xiu Chen, Tian-Yu Yang, Li Chen, Zheng Guo, Xing-Jiu Huang
Summary: A temperature-modulated sensing strategy was proposed to identify and determine BTEX compounds. Highly effective identification of BTEX was achieved using linear discrimination and convolutional neural network analyses. Additionally, quantitative analysis of concentration was accomplished by establishing the relationship between concentration and response.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Myungkyung Noh, Jeong Yeon Sim, Jisung Kim, Jee Hwan Ahn, Hye-Young Min, Jong-Uk Lee, Jong-Sook Park, Ji Yun Jeong, Jae Young Lee, Shin Yup Lee, Hyo-Jong Lee, Choon-Sik Park, Ho-Young Lee
Summary: This study reveals that chronic exposure to PM induces chronic inflammation and development of COPD by dysregulating NAD+ metabolism and subsequent SIRT1 deficiency in pulmonary macrophages. Activation of SIRT1 by resveratrol effectively mitigates PM-induced inflammation and COPD development. Targeting metabolic and epigenetic reprogramming in macrophages induced by PM is a promising strategy for COPD treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yu Liu, Linlin Qin, Yiming Qin, Tong Yang, Haoran Lu, Yulong Liu, Qiqi Zhang, Wenyan Liang
Summary: Co/NC/PAC electrode was prepared by compounding ZIF-67 with powder-activated carbon for the electrocatalytic treatment of nitrogen-containing heterocyclic compounds. The degradation efficiency of the four compounds reached 90.2-93.7% under optimal conditions, and the degradation order was pyridazine < pyrimidine < pyrazine < pyridine.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Julien Couturier, Pierre Tamba Oulare, Blanche Collin, Claire Lallemand, Isabelle Kieffer, Julien Longerey, Perrine Chaurand, Jerome Rose, Daniel Borschneck, Bernard Angeletti, Steven Criquet, Renaud Podor, Hamed Pourkhorsandi, Guilhem Arrachart, Clement Levard
Summary: This study analyzes the properties of bauxite residue samples and explores the influence of bauxite ore origin, storage conditions, and storage time. The results show that the speciation of yttrium is related to the origin of bauxite ore, while no significant variation was observed with storage conditions or aging of the residues.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Sakthinarenderan Saikumar, Ravi Mani, Mirunalini Ganesan, Inbakandan Dhinakarasamy, Thavamani Palanisami, Dharani Gopal
Summary: Microplastic contamination in marine ecosystems poses a growing concern due to its trophic transfer and negative effects on marine organisms. This study investigates the transfer and impacts of polystyrene microplastics in an estuarine food chain. The results show that microplastics can be transferred through the food chain, although the transfer rates are low. The exposed organisms exhibit stress responses, suggesting the potential risk of microplastics reaching humans through the food chain.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Review
Engineering, Environmental
Yan-Jiao Li, Ying Yuan, Wen-Bing Tan, Bei-Dou Xi, Hui Wang, Kun-Long Hui, Jia-Bao Chen, Yi-Fan Zhang, Lian-Feng Wang, Ren-Fei Li
Summary: This review investigated and analyzed the distribution, composition, and abundance of heavy metals and antibiotic resistance genes (ARGs) in landfill. The results showed that heavy metals have lasting effects on ARGs, and complexes of heavy metals and organic matter are common in landfill. This study provides a new basis to better understand the horizontal gene transfer (HGT) of ARGs in landfill.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Jessy Joseph, Ari Vaisanen, Ajay B. Patil, Manu Lahtinen
Summary: Efficient and environmentally friendly porous hybrid adsorbent beads have been developed for the removal of arsenic from drinking water. The structural tuning of the adsorbents has been shown to have a significant impact on their adsorption performance, with high crystallinity leading to increased adsorption capacity and selectivity towards As5+.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yangyang Liu, Minhua Xiao, Kaiqin Huang, Juntao Cui, Hongli Liu, Yingxin Yu, Shengtao Ma, Xihong Liu, Meiqing Lin
Summary: This study measured the levels of phthalate metabolites in breast milk collected from mothers in southern China. The results showed that phthalates are still prevalent in the region, and breastfeeding contributes to phthalate intake in infants. However, the levels detected do not pose significant health risks to infants based on dietary exposure. The increasing exposure to certain phthalates calls for further research into their sources and potential risks.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhiqiang Wu, Jianxing Sun, Liting Xu, Hongbo Zhou, Haina Cheng, Zhu Chen, Yuguang Wang, Jichao Yang
Summary: Ocean depth affects microbial diversity, composition, and co-occurrence patterns of microplastic microbial communities. Deterministic processes dominate the assembly of mesopelagic plastisphere microbial communities, while stochastic processes shape the assembly of bathypelagic microbial communities. The relationships between microorganisms in the mesopelagic layer are more complex and stable, with Proteobacteria and Actinobacteriota playing important roles.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Tingting Xiao, Renjie Chen, Chen Cai, Shijie Yuan, Xiaohu Dai, Bin Dong, Zuxin Xu
Summary: Based on the efficiency of catalytic ozonation techniques in enhancing sludge dewaterability, this study investigated its effectiveness in simultaneous reduction of antibiotics and antibiotic resistance genes. The results showed that catalytic ozonation conditioning changed the distribution of antibiotics and achieved high degradation rates. It also significantly reduced the abundance of ARGs, inhibited horizontal gene transfer, and decreased the signal transduction of typical ARGs host bacteria.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yang Deng, Xiaohong Guan
Summary: This article discusses two different development approaches for ferrate(VI) technology in water treatment, arguing that process integration is a promising method that can drive technological innovation and revolution in water treatment, achieving higher treatment efficiency, reduced costs and energy consumption, and a smaller physical footprint.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhe Zhang, Lu Zhang, Zhihao Huang, Yuxin Xu, Qingqing Zhao, Hongju Wang, Meiqing Shi, Xiangnan Li, Kai Jiang, Dapeng Wu
Summary: In this study, a floating catalytic foam was designed and prepared to enhance the mass transfer in immobilized photocatalysts for wastewater treatment. The floating catalytic foam could float on the water surface and establish a temperature gradient, effectively promoting the diffusion and adsorption of target molecules during the photocatalytic process.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Muhammad Nafees, Adiba Khan Sehrish, Sarah Owdah Alomrani, Linlin Qiu, Aasim Saeed, Shoaib Ahmad, Shafaqat Ali, Hongyan Guo
Summary: The accumulation of cadmium and antibiotics in edible plants and fertile soil is a worldwide problem. This study investigated the potential of zinc oxide nanoparticles to alleviate the toxicity of both cadmium and antibiotics and promote spinach growth.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Lurui Wan, Kai Wang, Yuan Chen, Zhiyong Xu, Wenbo Zhao
Summary: In this study, a low viscosity and high thermal stability SO2 absorbent with dual interacting sites was successfully synthesized. The absorbent showed the highest absorption enthalpy change and entropy change values among reported SO2 absorbents, and exhibited lower viscosity and comparable thermal stability to ILs.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhengwei Zhou, Guojie Ye, Yang Zong, Zhenyu Zhao, Deli Wu
Summary: This study utilized Mo powder and STPP to enhance the performance of the sodium percarbonate system in pollutant degradation. The presence of Mo and STPP resulted in a higher degradation rate of the model pollutant SMX, with low oxidant consumption. The system generated multiple active species through a series of chain reactions at different pH values, exhibiting excellent performance towards electron-rich pollutants. Furthermore, Mo demonstrated excellent stability and reusability.
JOURNAL OF HAZARDOUS MATERIALS
(2024)