Article
Engineering, Environmental
Shalini Singh, Vipin Kumar, Pratishtha Gupta, Madhurya Ray, Ashok Kumar
Summary: This research experiment investigated the potential of Brevundimonas species IITISM22 to remove mercury using live bacterial biomass at different temperatures. The study found that IITISM22 exhibited the highest mercury absorption at pH 6.5 and a contact time of 4 hours, with kinetics following the pseudo-second-order model. Additionally, the adsorption process was well-defined by the Linear Langmuir isotherm model.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Sourav Maity, Soumyashree Nanda, Angana Sarkar
Summary: Colocasia esculenta stem biomass showed efficient biosorption of arsenate, chromium, and cadmium, but exhibited low adsorption of copper, nickel, and zinc. The biosorption process was spontaneous and endothermic in nature, making it a potentially cost-effective method for treating effluents contaminated with trace metals.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Chemical
Junli Liu, Chunhua Zhang, Bernard Tao, Janna Beckerman
Summary: This study investigated the various roles of biomass components in the biosorption of heavy metals. The results showed that hemicellulose exhibited superior performance compared to commercial ion-exchange resins, while lignin was not suitable as a biosorbent. These findings demonstrate the feasibility of using biosorbents derived from hemp stalks as sustainable and economical materials for wastewater treatment.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Energy & Fuels
James F. Amaku, Jude C. Nnaji, Segun A. Ogundare, Kovo G. Akpomie, Comfort M. Ngwu, Helen O. Chukwuemeka-Okorie, Siyaka Mj Zubairu, Boniface I. Ugwu, Stephen A. Odoemelam, Jeanet Conradie
Summary: In this research, a novel green tillite-based adsorbent (CMT) was synthesized by modifying the surface of natural/pristine tillite (PT) with Chrysophyllum albidum stem bark extract. CMT showed higher efficiency and adsorption capacity for Cr(VI) removal compared to most materials used for this purpose. The results also demonstrated the reusability of CMT and the chemisorption as the rate-controlling step. This study highlights the potential of Chrysophyllum albidum stem bark extract anchored on tillite as a green adsorbent for efficient Cr(VI) removal from polluted water.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Chemistry, Analytical
Rupa Chakraborty, Renu Verma, Anupama Asthana, S. Sree Vidya, Ajaya Kumar Singh
Summary: The study showed that formaldehyde-modified sawdust has a good adsorption effect on Cr(VI) in wastewater, achieving a removal rate of up to 100%. The experimental data best fits the Freundlich adsorption isotherm model and pseudo-second-order kinetic model.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2021)
Article
Engineering, Chemical
I. M. Ahmed, A. A. Nayl
Summary: The use of mustard seeds functionalized with TOA as an adsorbent (TOA-M)-BR effectively removed Cr(VI) from sulfate media. The process followed pseudofirst-order rate and complied with Langmuir isotherm, demonstrating feasible, spontaneous, and endothermic adsorption. Operating conditions also allowed efficient separation of Cr(VI) from other fission products.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Chemistry, Multidisciplinary
P. E. Dim, L. S. Mustapha, M. Termtanun, J. O. Okafor
Summary: The study focused on using modified clay as adsorbents to remove heavy metals from industrial effluents, showing promising results in terms of adsorption efficiency and cost-effectiveness.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Environmental Sciences
D. Prabu, P. Senthil Kumar, B. Senthil Rathi, S. Sathish, K. Vijai Anand, J. Aravind Kumar, Osama B. Mohammed, P. Silambarasan
Summary: This study established the potential of Fe3O4-BAC adsorbent by coating activated carbon with a nano adsorbent. The adsorbent exhibited superior magnetic behavior, high adsorption capacity, and removal efficiency under certain conditions.
ENVIRONMENTAL RESEARCH
(2022)
Article
Metallurgy & Metallurgical Engineering
Qiang Zhao, Baibing Yang, Haowen Ren, Shihong Chen, Chunhui Luo, Quande Li, Wei Yang, Kangping Yan
Summary: The discharge of wastewater containing Cr(VI) and the accumulation of Fe-P slag pose a threat to the environment and human health. This paper proposes an approach that uses Fe-P slag as a reducing agent to completely remove Cr(VI) from the wastewater. Experimental study shows that the temperature and dosage of Fe-P slag significantly affect the reaction kinetics and removal efficiency. A simplified industrial procedure is also proposed for Cr(VI) removal without additional power input.
Article
Environmental Sciences
Kaiyan Zhou, Yulu Zhou, Hongbo Zhou, Haina Cheng, Gang Xu
Summary: This study explores the biosorption behavior of waste P.pastoris cells for Cu(II), Ni(II), and Cr(VI) in aqueous solutions. The results show that the waste cells have effective biosorption rates for the removal of these metals, with Cu(II) having the highest adsorption capacity. The cells also exhibit good regeneration and reusability.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Engineering, Chemical
Fatemeh Kariminejad, Samira Baghchevan Ghadimi, Farhad Rahmani, Mohsen Haghighi, Rojiar Akbari Sene, Mohammad Ali Zazouli, Elham Sadat Heydari
Summary: The study evaluated the biosorption of Cr(VI) by biomass of dried sludge from synthetic and real industrial effluents. The prepared biosorbent showed potent adsorptive functional groups, heterogeneous characteristics, and a porous surface conducive for Cr(VI) biosorption. With key parameters tested, kinetic models analyzed, and isotherms conducted, the results confirmed high efficiency in removing Cr(VI) from wastewater.
DESALINATION AND WATER TREATMENT
(2021)
Article
Biochemistry & Molecular Biology
Puja Dokania, Sourav Maity, Pritam Bajirao Patil, Angana Sarkar
Summary: This study focuses on the bioremediation of toxic trace metals in wastewater using Acalypha wilkesiana leaf raw biomass. The optimization of process variables was done and the results showed that Acalypha wilkesiana leaf raw biomass is an effective and efficient biosorbent for removing different trace metals from aqueous systems.
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
(2023)
Article
Engineering, Chemical
Yinghua Song, Shengming Chen, Hui Xu
Summary: The study demonstrates that walnut shell is a cost-effective and efficient adsorbent for the removal of malachite green from wastewater, showing high removal efficiency and promising practical application potential.
DESALINATION AND WATER TREATMENT
(2021)
Article
Green & Sustainable Science & Technology
Mohini Singh, Mohd. Rayaz, Arti Rao
Summary: This study explores the potential of Prosopis cineraria leaf powder (PCLP) as a biosorbent for removing heavy metal ions (HMIs) from aqueous solutions. The results demonstrate that PCLP follows Langmuir isotherm for adsorption and pseudo-second-order (PSO) model for kinetics. Nonlinear regression analysis shows better fitting for equilibrium modeling, while the PSO model performs comparably to linear analysis for kinetics. PCLP shows promise as an environmentally friendly and cost-effective biosorbent for removing toxic HMIs.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2023)
Article
Environmental Sciences
A. K. Yadav, S. Singh, R. Sen, P. Jha, K. Tungare, M. Bhori, M. Rangara, N. Desai, R. Jobby
Summary: This study reveals that untreated rice husk can effectively remediate hexavalent chromium through a process involving adsorption, reduction, and desorption.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
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)