Review
Environmental Sciences
Chaomeng Dai, Yueming Han, Yanping Duan, Xiaoying Lai, Rongbing Fu, Shuguang Liu, Kah Hon Leong, Yaojen Tu, Lang Zhou
Summary: The rapid economic and population growth in coastal areas has led to serious PAHs pollution. This review compared the pollution characteristics of different coastal areas and summarized the remediation methods for PAHs contamination in soil and sediments. It also introduced new green and sustainable systems. Integrated approaches are the best choice for PAHs remediation, but new technologies are still needed due to environmental heterogeneity.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Bingxin Xie, Jihong Qin, Hui Sun, Shu Wang, Xin Li
Summary: This study focuses on the distribution and leaching behavior of polycyclic aromatic hydrocarbons (PAHs) in oil-based residues of shale gas drilling cuttings. The results show that the concentration of 4-ring PAHs is the highest, and the concentration of PAHs decreases with increasing particle size of the residues. The leachate from the tested residues shows different PAH concentrations during the leaching process, with each leached PAH accounting for 1.50-3.20% of the total PAHs. The leaching characteristics of PAHs are best described by the first-order diffusion model (FRDM), with the leaching rate initially controlled by surface wash-off and then by diffusion.
Review
Environmental Sciences
Marie Davin, Gilles Colinet, Marie-Laure Fauconnier
Summary: This paper reviews three scientific trends leading current PAH-contaminated soil/sediment remediation studies and management. Firstly, the choice of compounds studied is discussed, suggesting the classical 16 US-EPA PAH compounds may no longer be sufficient. Secondly, the lack of PAH remediation trials on co-contaminated or aged-contaminated material is highlighted. Finally, the systematic use of the bioavailability measurement protocol as a tool to improve remediation processes and strategies is recommended.
ENVIRONMENTAL POLLUTION
(2021)
Review
Environmental Sciences
Mahmoud Mazarji, Tatiana Minkina, Svetlana Sushkova, Saglara Mandzhieva, Gholamreza Nabi Bidhendi, Anatoly Barakhov, Amit Bhatnagar
Summary: This article discusses the application of nanomaterials in the remediation of toxic polycyclic aromatic hydrocarbons in soil, highlighting the contributions of different NM characteristics to process enhancement and summarizing the best operating conditions. Additionally, attention is given to the influence of soil type and pollutant type on process performance, as well as the potential implications of NMs and PAHs on soil properties.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Thiloka Kariyawasam, Gregory S. Doran, Julia A. Howitt, Paul D. Prenzler
Summary: PAHs are harmful pollutants in the environment. Extraction and quantification are important steps to understand contamination and implement remediation. Traditional extraction methods have limitations and newer, more environmentally friendly methods are being explored.
Article
Engineering, Environmental
Larissa Montas, Alesia C. Ferguson, Kristina D. Mena, Helena M. Solo-Gabriele, Claire B. Paris
Summary: This study estimated the age-at-sea of weathered oil slicks using a modeling system and used this information to interpret PAH concentration measurements. The study found that the mean percent depletion of PAHs increased with estimated age-at-sea. Alkylated PAHs showed less depletion compared to parent PAHs.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Agnieszka Krzyszczak, Michal P. Dybowski, Magdalena Konczak, Bozena Czech
Summary: In recent years, there has been significant progress in the study of thermal transformation of waste into valuable materials such as biochar. High-temperature processes can lead to the formation of toxic polycyclic aromatic hydrocarbons (PAHs). However, the pyrolysis process can also result in the formation of derivatives containing oxygen, nitrogen, or sulfur, which may have higher toxicity than parent PAHs. The bioavailability of PAHs is an important parameter in the agricultural application of carbonaceous materials.
ENVIRONMENTAL RESEARCH
(2022)
Article
Engineering, Chemical
Pietro P. Falciglia, Guido De Guidi, Fabiana Vento, Guglielmo Finocchiaro, Elisa Castro, Monica Granetto, Tiziana Tosco, Federico G. A. Vagliasindi
Summary: A new Liquid Activated Carbon (LAC)-enhanced microwave (MW) treatment method for the remediation of PAH-contaminated soils was studied. The role of different doses of LAC was investigated, and it was found that LAC significantly increased the absorption capability of the MW electric field, resulting in high soil temperatures and shortened removal kinetics of PAH. The mobility of LAC was also tested, and it was shown to have good mobility when applied by gravity-driven percolation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Environmental Sciences
Jinbo Liu, Song Zhao, Ru Zhang, Yunchao Dai, Chi Zhang, Hanzhong Jia, Xuetao Guo
Summary: This study investigated the abiotic dissipation of PAHs and anthracene in soil, revealing significant contributions to the attenuation process with a wide range of contribution rates depending on the type of compound. The findings suggest that the abiotic dissipation is influenced by both molecule properties and soil types, providing valuable insights into the role of abiotic dissipation in PAH attenuation in soil.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Dishen Li, Pinjie Su, Mingbo Tang, Guohui Zhang
Summary: This study conducted a meta-analysis of 56 published studies and found that the application of biochar can significantly reduce the concentration of PAHs in soil, improve the physicochemical properties of soil, and enhance microbial diversity. The study also highlighted the importance of biochar production conditions and soil physicochemical properties in influencing PAH persistence.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Engineering, Chemical
Liang Shen, Yifang Liu, Jiabao Gong, Erle Qiao
Summary: The adsorption behavior of pyrene and seven types of surfactants on kaolinite surfaces was studied. The results showed that pyrene was more easily adsorbed on the 001 (-) side of kaolinite. Some surfactants had strong interactions with pyrene, forming aggregates. However, high concentration of surfactant inhibited pyrene desorption on the kaolinite surface.
Article
Multidisciplinary Sciences
Xiaokang Li, Jinling Li, Chengtun Qu, Tao Yu, Mingming Du
Summary: In this study, bioaugmentation and biostimulation were used to improve the bioremediation effect of soil with high oil content. After 53 days, the soil showed a degradation efficiency of 76.9%+/- 2.2% in total petroleum hydrocarbons. The bacterial count increased and diversity improved, with a reduction in toxicity of the bioremediated soil observed through seed germination and earthworm survival experiments.
SCIENTIFIC REPORTS
(2021)
Article
Environmental Sciences
Jorge Vinicius Fernandes Lima Cavalcanti, Tiago Jose Marques Fraga, Mirella de Andrade Loureiro Leite, Daniella Fartes dos Santos e Silva, Valmir Felix de Lima, Alexandre Ricardo Pereira Schuler, Clistenes Williams Araujo do Nascimento, Mauricio Alves da Motta Sobrinho
Summary: In this study, sodium percarbonate was utilized as an oxidant to treat diesel-contaminated soil, and the photo-Fenton reaction was effective in degrading polycyclic aromatic hydrocarbons. The initial concentration of Fe2+ had the most significant impact on the decrease in total organic carbon in the soil.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Wei Ge, Huan Zhou, Yan Li, Yanqin Wang, Zhenfeng Zhou, Juan Wu, Chao Chai
Summary: The use of spent mushroom substrate (SMS) from Pleurotus eryngii can effectively degrade PAHs in agricultural soils, with the highest efficiency observed when SMS is applied at a high rate and frequency.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Environmental Sciences
Zhijun Luo, Yanghong Min, Lingling Qu, Youye Song, Yongxiang Hong
Summary: The photochemical process of ferrous oxalate effectively degrades phenanthrene in contaminated soil under visible light irradiation by generating hydroxyl radicals. Ferrous oxalate possesses excellent visible light absorption ability, which is crucial for enhancing the degradation efficiency of phenanthrene.
Article
Thermodynamics
Kai Yen Yong, Yen Keat Chan, Ee Von Lau, Yew Mun Hung
Summary: This study introduces an effective passive two-phase LED cooling system using thermally cured GNPs coatings, which significantly enhances the cooling performance of the LED, reduces temperature, and optimizes its functionality and durability.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Computer Science, Interdisciplinary Applications
Nguoy L. Mak, Ean H. Ooi, Ee V. Lau, Ean T. Ooi, Narendra Pamidi, Ji J. Foo, Ahmad F. Mohd Ali
Summary: The computational TCA framework was applied to simulate thermochemical ablation process, revealing that higher injection rate leads to higher temperature rise and larger thermal coagulation. An optimum reagent concentration of 7500 mol/m3 was identified for significant thermal coagulation without tissue overheating. Additionally, the thermal coagulation volume was consistently larger than the total volume of injected reagents, reducing the risk of chemical burn injury.
COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE
(2022)
Article
Energy & Fuels
Mustapha Danladi Ibrahim, Yousif Abdalla Abakr, Suyin Gan, Lai Yee Lee, Suchithra Thangalazhy-Gopakumar
Summary: This study investigated the effects of inert gases on intermediate pyrolysis and product properties from Bambara Groundnut Shells. The results showed that the inert gases did not significantly affect the yields of bio-oil, biochar, and syngas. The presence of N-2/CO2 gas favored alcohol and phenol production significantly.
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
Thermodynamics
Mohammad Zandie, Hoon Kiat Ng, Suyin Gan, Mohd Farid Muhamad Said, Xinwei Cheng
Summary: This research analyzes the combustion, soot formation, and exhaust emissions of diesel, biodiesel, gasoline fuels, and their mixtures in a constant volume chamber. The study focuses on the effects of different ambient temperature and oxygen levels on flame structure and emissions. The results show that the mixture D65 | BD20 | G15 has lower soot formation and nitrogen oxide emissions. Lowering the ambient temperature and increasing the oxygen concentration further reduce the emissions.
Article
Environmental Sciences
Mustapha Danladi Ibrahim, Yousif Abdalla Abakr, Suyin Gan, Suchithra Thangalazhy-Gopakumar
Summary: The current work focused on the intermediate pyrolysis of Bambara Groundnut Shells (BGS-G1), Sweet Sorghum Stalk (SSS), and Shea Nutshells (SNS). These feedstocks showed potential for bioenergy and green chemicals production.
ENVIRONMENTAL TECHNOLOGY
(2022)
Review
Green & Sustainable Science & Technology
Mohammad Zandie, Hoon Kiat Ng, Suyin Gan, Mohd Farid Muhamad Said, Xinwei Cheng
Summary: The article thoroughly reviews the feasibility of using a ternary fuel blend of diesel-biodiesel-gasoline in engines, highlighting the benefits and challenges associated with adding gasoline to the mixture.
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
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
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
Engineering, Chemical
Gan Cheng, Mengni Zhang, Yang Lu, Yanhui Zhang, Bin Lin, Ee Von Lau
Summary: Three different types of detergent, including soap, liquid soap, and soap powder, were prepared from waste fried oil through the saponification process. The optimal conditions for saponification were determined, and the preparation processes involved waste fried oil treatment, orange peel extract preparation, saponification, demoulding, and drying. The resulting detergent met the production standard for strong decontamination ability, exhibited stable performance, and was gentle to the skin and non-toxic.
Article
Environmental Sciences
Elizabeth Alvarez-Chavez, Stephane Godbout, Mylene Genereux, Caroline Cote, Alain N. Rousseau, Sebastien Fournel
Summary: This study evaluated the effect of alternative filtering materials and bed aeration on the retention of nutrients and fecal bacteria in woodchip bedded stand-off pads for cows. The results showed that the alternative biofilters were more efficient in removing COD, SS, TN, and NO3-N, while conventional biofilters were more efficient for PO4-P removal. Aeration did not have a significant effect under the tested temperature conditions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yike Zhang, Zengyi Ma, Zhuoting Fang, Yuandong Qian, Zhiping Huang, Yilong Ye, Jianhua Yan
Summary: This study investigates the application of oxygen enrichment melting technology in the melting of municipal solid waste incineration fly ash. The results demonstrate that oxygen enrichment technology can reduce energy consumption and operating costs, as well as decrease pollution emissions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Liangang Xiao, Mingkai Leng, Philip Greenwood, Rongqin Zhao, Zhixiang Xie, Zengtao You, Junguo Liu
Summary: This study investigates the effects of grazing exclusion on soil organic carbon (SOC) accumulation and vegetation recovery. It finds that grazing exclusion can increase the potential for SOC accumulation, and higher annual precipitation is positively correlated with SOC accumulation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Beatrice Cantoni, Jessica Ianes, Beatrice Bertolo, Selena Ziccardi, Francesco Maffini, Manuela Antonelli
Summary: This study evaluates the performance of ozonation and adsorption as in-series processes compared to standalone processes for the removal of Contaminants of Emerging Concern (CECs) in drinking water. The combination of both processes proves to be more effective than adsorption and ozonation alone. Ozonation improves the adsorption performance of poorly-oxidizable CECs but worsens that of well-oxidizable compounds. This research highlights the importance of considering both processes in the removal of CECs in drinking water treatment plants.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Dan Li, Bingjun Liu, Yang Lu, Jianyu Fu
Summary: A new Standardized compound Drought and Saltwater intrusion Index (SDSI) was developed to detect changes in the severity of CDSEs in six estuaries. The study found that saltwater intrusion plays a dominant role in influencing SDSI severity, and CDSEs vary in frequency, duration and severity among different estuaries.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yong-Qiang Li, Rui Sun, Chong-Miao Zhang, Zi-Xuan Liu, Rui-tao Chen, Jian Zhao, Hua-dong Gu, Huan-Cai Yin
Summary: In this study, an electron beam excitation multi-wavelength ultraviolet (EBE-MW-UV) system was established and found to have significantly higher microbial inactivation effects compared to single-wavelength UV-LEDs in water. Mechanism analysis revealed that EBE-MW-UV damaged microbial DNA and proteins, and generated additional reactive oxygen species, leading to microbial inactivation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Kaili Ma, Xinxin Han, Qiujuan Li, Yu Kong, Qiaoli Liu, Xu Yan, Yahong Luo, Xiaopin Li, Huiyang Wen, Zhiguo Cao
Summary: This study reveals that the use of a tryptophan-degrading microbial consortium (TDC) can enhance the hydrolysis efficiency of waste activated sludge (WAS), increasing the yield and quality of short chain fatty acids (SCFAs) and improving the solubilization and release of organic substances from WAS.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Ling Xiong, Rui Li
Summary: Incorporating Ecosystem Service Value (ESV) into land use planning can provide informed land management decisions. This study evaluates the ESV of Guizhou Province in China's karst region. The results show an increase in total ESV over the past two decades due to ecological restoration projects.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
M. Geetha Jenifel
Summary: This article discusses the importance of water and the pollution of freshwater resources, and introduces the use of machine learning models and blockchain technology to predict and protect water quality.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Stanslaus Terengia Materu, Taotao Chen, Chang Liu, Daocai Chi, Meng Jun
Summary: The study showed that H2SO4-modified biochar can reduce P leaching, increase soil available P, and enhance plant P uptake in alternate wetting and drying irrigation systems. Biochar additions B20A and IAWDB20A-M were effective in improving yield, reducing P leaching, and increasing APB.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Amir Nouri, Ali Akbar Zinatizadeh, Sirus Zinadini, Mark Van Loosdrecht
Summary: This study focuses on the development of an air-lift bio-electrochemical reactor (ALBER) with a continuous feeding regime to enhance nitrogen removal from synthetic wastewater. The effect of temperature, hydraulic retention time (HRT), N -NH+4 /TN ratio, and current density on the reactor performance was investigated, and the ALBER achieved a maximum TN removal of 73%. The results suggest that the ALBER has potential for treating industrial wastewater at low temperatures.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Peifang Wang, Guoxiang You, Yang Gao, Juan Chen, Xun Wang, Chao Wang
Summary: This study investigated the ecological processes of microbial communities and N- and P-transformation processes in multistage agricultural drainage ditches. The results showed that the microbial communities were co-shaped by agricultural practices and ditch size, which further governed the N and P removal performance.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Xiaofeng Niu, Huan Wang, Tao Wang, Peiyu Zhang, Huan Zhang, Hongxia Wang, Xianghong Kong, Songguang Xie, Jun Xu
Summary: Microorganisms play a critical role in maintaining ecosystem balance, and environmental stressors can affect the assembly processes of microbial communities. The study found that different stressors have opposite effects on microbial community assembly in water and sediment, and warming has different influences compared to herbicides and nutrients.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yuqing Tan, Qiming Cheng, Fengwei Lyu, Fei Liu, Linhao Liu, Yihong Su, Shaochun Yuan, Wenyu Xiao, Zhen Liu, Yao Chen
Summary: The exacerbation of global warming, extreme weather events, and rapid urbanization have led to increased flooding in urban areas. China has adopted sponge city as an efficient means of preventing and controlling urban floods. Using a SWMM-FVCOM model, the hydrological reduction and control effect of sponge city construction (SPCC) within a university campus were evaluated. The study found that implementing SPCC effectively mitigates surface runoff and reduces the severity of urban flooding. However, the efficacy of runoff control decreases with longer rainfall return periods.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Zhonghan Chen, Qiuyan Li, Shibo Yan, Juan Xu, Qiaoyun Lin, Zhuangming Zhao, Ziying He
Summary: Tidal rivers are important biochemical reaction channels, receiving carbon from wastewater and agricultural drains, affecting CO2 emissions. Through modeling and data analysis, researchers explored carbon distribution, emissions, and greenhouse effects, emphasizing the potential of river management to change global CO2 emissions under climate change.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
