Article
Agricultural Engineering
Shivangi Singh, Emmanuvel Arputharaj, Hans-Uwe Dahms, Anil Kumar Patel, Yeou-Lih Huang
Summary: This study successfully synthesized chitosan/polyvinyl alcohol, poly(ethyleneimine), and Fe3O4 impregnated beads for the co-removal of Cr(VI) and toxic azo-dyes from wastewater. The adsorbent showed magnetism and enhanced physisorption due to its high specific-porosity and surface functional groups. It demonstrated a high adsorption capacity for different pollutants and confirmed the potential for real-world applications.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Chemical
Sameer Imdad, Rajeev Kumar Dohare, Madhu Agarwal, Abhishek Srivastava
Summary: Hexavalent chromium is a hazardous substance that poses a significant threat to human health and the environment. PET bottles, on the other hand, contribute substantially to the plastic waste problem. Converting waste PET bottles into polymeric membranes using supported ionic liquid membrane technology shows promise in efficiently treating contaminated water.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Yefan Qing, Wei Gao, Yantong Long, Yijin Kang, Chen Xu
Summary: In this study, a Ti-based metal-organic framework (MOF) was functionalized by introducing amidoxime groups, resulting in excellent Cr(VI) adsorption performance.
INORGANIC CHEMISTRY
(2023)
Article
Environmental Sciences
Hao Zhang, Haifeng Zhou
Summary: Industrial lignins, especially pulping black liquor lignin, show promising adsorption performance for Cr(VI) removal from wastewater. The adsorption process is primarily chemisorption, leading to the reduction of toxic Cr(VI) to less harmful Cr(III). This research provides potential for the effective utilization of industrial lignins in wastewater treatment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Yuhua Su, Shuo Sun, Qiyou Liu, Chaocheng Zhao, Lin Li, Shuiquan Chen, Hongxu Chen, Yaru Wang, Fang Tang
Summary: This study isolated and identified Pseudomonas sp. YH-1 and Rhodococcus sp. YH-3, which showed greater tolerance to hexavalent chromium. A bacteria consortium YH, consisting of YH-1 and YH-3, was able to simultaneously degrade pyrene and remove Cr(VI) in water and soil. The genomic analysis revealed the potential mechanisms of Cr(VI) tolerance and resistance to other heavy metals in these strains.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Green & Sustainable Science & Technology
Ramdev More, Shatakshi Shukla, Shashank Garg, Shalini Singh, Maulin P. P. Shah
Summary: Hexavalent chromium Cr(VI) has become a major concern for environmentalists due to improper disposal by certain industries. Adsorption is a widely used method for removing Cr(VI) from industrial wastewater, and biopolymer-based nano-composites have shown promising results as efficient biosorbents. This review summarizes recent studies on the adsorption mechanisms, capacities, isotherms, and kinetics of these nano-composites. The conventional abiotic and biotic techniques for Cr(VI) removal are also discussed, along with a comparison of their adsorption capacity and efficiency. The analysis suggests that monolayer adsorption with ion exchange, electrostatic interaction, and surface complexation are the main mechanisms involved in the adsorption process.
CLEAN-SOIL AIR WATER
(2023)
Article
Chemistry, Physical
Yan Zhang, Hong Zhong, Zhang Lin
Summary: A series of imidazolium-based ionic polymers were successfully synthesized and characterized, with ImIP4Br showing the highest removal rate for Cr(VI) in aqueous solution. ImIP4Br demonstrated outstanding enrichment and regenerative abilities, making it promising for capture and separation of Cr(VI) from contaminated water systems, even in the presence of competitive ions.
SURFACES AND INTERFACES
(2021)
Article
Environmental Sciences
Shuoqi Ren, Yuchen Wang, Zijian Han, Qiwei Zhang, Chongwei Cui
Summary: A highly efficient absorbent, PDA/MgAl-LDH, was developed in this study by modifying polydopamine film on Mg-Al layered double hydroxide to remove Cr(VI) from wastewater. The study systematically investigated the absorption performance and mechanisms, providing insights into the interaction between PDA and Cr(VI) as well as Cr(III) for potential wastewater treatment applications.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Xiuxiu Zhang, Guiyun Yi, Zhengting Zhang, Jia Yu, Haiyang Fan, Peng Li, Huihui Zeng, Baolin Xing, Lunjian Chen, Chuanxiang Zhang
Summary: Magnetic graphene-based composites show high adsorption efficiency and excellent recycling and regeneration properties for removing Cr(VI) ions, with a maximum removal efficiency of 99.9% and a high adsorption rate of 98.13% after 10 cycles. These composites have the potential to be effective adsorbents for heavy metal ion removal in environmental protection and restoration.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Yimin Huang, Xueyan Li, Yan Peng, Hua Zhang, Anxian Shi, Xiujun Deng, Baoling Wang, Yingtang Zhou, Bing Wang, Guangzhi Hu
Summary: In this study, chitosan was modified to synthesize a spherical adsorbent for the removal of hexavalent chromium from wastewater. The adsorbent showed high adsorption capacity, good regeneration ability, and high selectivity for chromium. It has potential applications in removing chromium from real wastewater.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Bach Van Nguyen, Xiaojing Yang, Shota Hirayama, Jixiang Wang, Ziwen Zhao, Zhongfang Lei, Kazuya Shimizu, Zhenya Zhang, Sinh Xuan Le
Summary: Heavy metal-containing wastewater with high salinity poses challenges for conventional activated sludge process in wastewater treatment plants. Bioremediation has been effective in removing heavy metals from various wastewaters. Algal-bacterial aerobic granular sludge (AGS) is a promising biosorbent for heavy metal treatment, especially Cr(VI). In this study, the impact of salinity on the performance of AGS in removing heavy metals was evaluated, showing that salinity exposure may slightly influence Cr(VI) bioremediation.
Article
Biochemistry & Molecular Biology
Ashraf Ali, Sarah Alharthi, Nora Hamad Al-Shaalan, Alia Naz, Hua-Jun Shawn Fan
Summary: In this study, amide-modified biochar was synthesized through low-temperature pyrolysis of rice husk and utilized for the removal of Cr(VI) from wastewater. The results showed that under optimal conditions (pH 2, adsorbent time of 60 min, adsorbent dosage of 2 g/L, and metal concentration of 100 mg/L), the amide-modified biochar achieved a removal efficiency of 97% for Cr(VI). The adsorption data fitted well with the Langmuir isotherm model, and the kinetics study revealed a pseudo-second-order kinetic model for Cr(VI) adsorption.
Article
Microbiology
Qiuying An, Min Zhang, Dongbei Guo, Guangshun Wang, Hao Xu, Chun Fan, Jiayao Li, Wei Zhang, Yi Li, Xiaoxuan Chen, Wanting You, Ran Zhao
Summary: This study identified functional genes in the chromium-resistant strain Sporosarcina saromensis M52 and constructed recombinant strains using genetic engineering technology. Analysis of multiple indicators revealed the tolerance and reduction abilities of these strains towards Cr(VI). The study provides a foundation for further understanding the mechanism of Cr(VI) reduction and the development of effective strains for remediating Cr(VI) contamination.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Qinghua Han, An Wang, Jinrui Zhang
Summary: Cr(VI) is a common pollutant in wastewater and can pose a threat to human health. This study found that calcined Mg/Al-LDHs can effectively remove Cr(VI) ions from wastewater. The adsorption capacity of Mg/Al-LDOs for Cr(VI) ions was found to conform to the Langmuir isotherm model, with a maximum adsorption capacity of 147.39 mg/g at 20 degrees C.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Wei Long, Zhilong Chen, Jie Shi, Shilin Yang
Summary: A magnetic composite adsorbent containing Fe3O4 and Saccharomyces cerevisiae (SC) was successfully prepared and used for the removal of Cr(VI) ions in petrochemical wastewater. The adsorbent exhibited high removal capacity and reutilization, with a kinetics model of coexistence of physical and chemical adsorption. This new adsorbent shows potential for industrial-level applications in petrochemical wastewater treatment containing Cr(VI) ions.
Article
Energy & Fuels
Biswajit Kamila, Anup Kumar Sadhukhan, Parthapratim Gupta, Prabir Basu, Bishnu Acharya
Article
Energy & Fuels
Somnath Chowdhury, Sumit H. Dhawane, Bipul Jha, Sucharita Pal, Ramanand Sagar, Adil Hossain, Gopinath Halder
Summary: The study investigates the synthesis of biodiesel from Madhuca indica oil using waste egg shell-derived catalyst, optimizing the productivity of biodiesel and identifying parameters affecting yield. Confirmatory experiments validated the produced biodiesel meeting ASTM standards.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Engineering, Chemical
Ruchika Thakur, Gopinath Halder, Sanghamitra Barman
INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING
(2020)
Article
Green & Sustainable Science & Technology
Bisheswar Karmakar, Sucharita Samanta, Gopinath Halder
JOURNAL OF CLEANER PRODUCTION
(2020)
Article
Polymer Science
Deepshikha Datta, Sucharita Samanta, Gopinath Halder
Summary: The study focused on the parametric optimization of LDPE blended silane-modified nanosilica films with different compositions of starch/starch phthalate using central composite design approach of response surface methodology. The results indicated that the optimized conditions are required for high biodegradation and superior mechanical properties under specific conditions.
Article
Green & Sustainable Science & Technology
Shraboni Mukherjee, Anoar Ali Khan, Sanghamitra Barman, Gopinath Halder
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2020)
Article
Chemistry, Analytical
Tanishka Mehta, Aanchal Rathi, Anoop Verma, Sanghamitra Barman, Gopinath Halder
Summary: The study evaluated the performance of copper modified zeolite-13X as an adsorbent for removing Fipronil pesticide from synthetic wastewater. Results showed a maximum removal rate of 92.3% under optimal conditions, indicating the potential of copper-doped zeolite as a sorbent for the eradication of Fipronil pesticide from wastewater.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Energy & Fuels
Sumona Show, Bisheswar Karmakar, Gopinath Halder
Summary: The study explored the sorptive potential of biochar derived from tamarind seeds for removing pharmaceutical micropollutant IBP in aqueous media. Different parametric conditions were examined to optimize the removal process and the biochar showed efficiency in multiple cycles of usage. Cost estimation indicated feasibility for commercial utilization of the engineered adsorbents. The maximum removal percentages achieved were 72.29% and 95.44% for TRB and TCAB respectively, demonstrating the effectiveness of biochar in eliminating IBP from water.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Chemistry, Analytical
Shraboni Mukherjee, Biswajit Kamila, Sayanta Paul, Baisakhi Hazra, Somnath Chowdhury, Gopinath Halder
Summary: The research found that PWA has a high efficiency and reusability in fluoride adsorption, making it suitable for water treatment with great potential for large-scale application.
MICROCHEMICAL JOURNAL
(2021)
Article
Energy & Fuels
Shraboni Mukherjee, Biswajit Kamila, Sayanta Paul, Baisakhi Hazra, Somnath Chowdhury, Raj Kumar Arya, Sanghamitra Barman, Gopinath Halder
Summary: This study introduces the use of activated carbon derived from mango kernel as an adsorbent for removing fluoride from water. The adsorption process was modeled and optimized using artificial neural network and genetic algorithm, and the results were validated using computational fluid dynamics. The experimental results showed that the mango kernel activated carbon exhibited excellent performance in removing fluoride ions.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Chemistry, Multidisciplinary
Abhilasha Rai, Biswajit Kamila, Susmita Dutta, Jitamanyu Chakrabarty
Summary: This study selected three different cyanobacterial and microalgal cultures, which showed different maximum productivities and distribution in different mediums. The ANN-GA method was used for modeling and optimization to select the suitable culture for the production of macromolecules in different environments.
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
(2022)
Article
Engineering, Multidisciplinary
Subhasish Majee, Gopinath Halder, R. N. Krishnaraj, Tamal Mandal
INTERNATIONAL JOURNAL OF MATHEMATICAL ENGINEERING AND MANAGEMENT SCIENCES
(2020)
Article
Chemistry, Multidisciplinary
Prasenjit Chakraborty, Gopinath Halder
Article
Engineering, Environmental
Sushovan Sen, Abhishek Dutta, Rambabu Ponnala, Biswajit Kamila, Pranas Baltrenas, Edita Baltrenaite, Susmita Dutta
ENVIRONMENTAL ENGINEERING SCIENCE
(2020)
Article
Chemistry, Multidisciplinary
Sucharita Samanta, Somnath Chowdhury, Debasis DasSharma, Gopinath Halder
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)