Pub Date : 2022-11-06DOI: 10.1080/26395940.2022.2142672
Hongyuan Li, Yujing Wang, Wenchao Du, Hua He, Shaogui Yang
ABSTRACT Soil contamination with perfluorooctanoic acid (PFOA) is a global concern. PFOA in soil can enter plants, affect plant growth and threaten food safety. Therefore, understanding the plant utilization and phytotoxicity of PFOA is conducive to assessing the environmental risk of soil contaminated with PFOA. This review analyzed recent studies about the uptake and effects of PFOA on terrestrial plants from the aspects of absorption, transport, distribution, phytotoxicity, and the underlying mechanism. Based on current research, PFOA was predominantly taken by plant roots and showed adverse effects on plants by affecting the antioxidant system and metabolic process. Research in field or higher terrestrial plants is still very scarce. Given the importance of exploring the potential remediation methods for PFOA, more research with comprehensive consideration of soil and environmental factors should be carried out to tell its specific mechanisms of plant utilization and toxicity action.
{"title":"Interaction of Perfluorooctanoic Acid with terrestrial plants: Uptake, transfer and phytotoxicity aspects","authors":"Hongyuan Li, Yujing Wang, Wenchao Du, Hua He, Shaogui Yang","doi":"10.1080/26395940.2022.2142672","DOIUrl":"https://doi.org/10.1080/26395940.2022.2142672","url":null,"abstract":"ABSTRACT Soil contamination with perfluorooctanoic acid (PFOA) is a global concern. PFOA in soil can enter plants, affect plant growth and threaten food safety. Therefore, understanding the plant utilization and phytotoxicity of PFOA is conducive to assessing the environmental risk of soil contaminated with PFOA. This review analyzed recent studies about the uptake and effects of PFOA on terrestrial plants from the aspects of absorption, transport, distribution, phytotoxicity, and the underlying mechanism. Based on current research, PFOA was predominantly taken by plant roots and showed adverse effects on plants by affecting the antioxidant system and metabolic process. Research in field or higher terrestrial plants is still very scarce. Given the importance of exploring the potential remediation methods for PFOA, more research with comprehensive consideration of soil and environmental factors should be carried out to tell its specific mechanisms of plant utilization and toxicity action.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":"24 1","pages":"518 - 526"},"PeriodicalIF":3.3,"publicationDate":"2022-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73487961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-21DOI: 10.1080/26395940.2022.2137061
A. Giwa, Mingqiang Sheng, Xiaoqian Zhang, Yuanyuan Wu, Huang Bo, A. Memon, Shuqin Bai, N. Ali, Jean Maurice Ndungutse, Wang Kaijun
ABSTRACT Continuous population growth associated with sanitation, food waste (FW), and domestic wastewater (DWW) is becoming critical globally. Crucial efforts and appropriate measures to utilize the FW and DWW for resources are needed. This paper reviews the conventional treatment techniques, challenges, and associated merits for treating FW and DWW. In the context of this review, DWW is often referred to as blackwater (BW)/feces. Due to the rationale for resource amplification, the review proposed that both mixtures (FW and DWW) be stored in a sub-surface storage tank for several months or years. They are further biodegraded in a bioprocess to generate energy with stabilized digestates. The effluent’s peculiar features are low organic acids with a low pH4 value, offering a stabilized and sanitized effluent. The second proposed route was to integrate anaerobic digestion, composting, and pyrolysis. Anaerobic digestion will offer bioenergy and digestates. Composting will cater to compost production and avert digestate drying and heating costs during pyrolysis. The pyrolysis of the digestates will generate biochar and bioenergy materials, while improved bioprocess performance is attained with the simultaneous biochar utilization in the bioprocess. The integrated technological routes can valorize DWW and FW for maximum resource recovery and sustainable development in a real-world context. The concept can be applied to an existing facility to create a cleaner and more efficient DWW with FW recycling. However, a comprehensive techno-economic analysis must be conducted.
{"title":"Approaches for treating domestic wastewater with food waste and recovery of potential resources","authors":"A. Giwa, Mingqiang Sheng, Xiaoqian Zhang, Yuanyuan Wu, Huang Bo, A. Memon, Shuqin Bai, N. Ali, Jean Maurice Ndungutse, Wang Kaijun","doi":"10.1080/26395940.2022.2137061","DOIUrl":"https://doi.org/10.1080/26395940.2022.2137061","url":null,"abstract":"ABSTRACT Continuous population growth associated with sanitation, food waste (FW), and domestic wastewater (DWW) is becoming critical globally. Crucial efforts and appropriate measures to utilize the FW and DWW for resources are needed. This paper reviews the conventional treatment techniques, challenges, and associated merits for treating FW and DWW. In the context of this review, DWW is often referred to as blackwater (BW)/feces. Due to the rationale for resource amplification, the review proposed that both mixtures (FW and DWW) be stored in a sub-surface storage tank for several months or years. They are further biodegraded in a bioprocess to generate energy with stabilized digestates. The effluent’s peculiar features are low organic acids with a low pH4 value, offering a stabilized and sanitized effluent. The second proposed route was to integrate anaerobic digestion, composting, and pyrolysis. Anaerobic digestion will offer bioenergy and digestates. Composting will cater to compost production and avert digestate drying and heating costs during pyrolysis. The pyrolysis of the digestates will generate biochar and bioenergy materials, while improved bioprocess performance is attained with the simultaneous biochar utilization in the bioprocess. The integrated technological routes can valorize DWW and FW for maximum resource recovery and sustainable development in a real-world context. The concept can be applied to an existing facility to create a cleaner and more efficient DWW with FW recycling. However, a comprehensive techno-economic analysis must be conducted.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":"104 1","pages":"501 - 517"},"PeriodicalIF":3.3,"publicationDate":"2022-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79228807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ABSTRACT Nanoparticles coated with electrospun fibers cannot fully exert their inherent properties. Therefore, it is critical to develop a method to enhance the intrinsic performances of the composite fibers. In this work, UiO-66/PAN composite nanofiber membranes with good physicochemical properties were prepared by electrospinning, and a swelling method was developed to improve its performances. The adsorption performance for arsenate was improved by 19.9% or 49% after swelling by nitrobenzene or pyridine solvent, respectively. The swelling process did not change the morphologies and structures of the fibers. The pyridine solvent as the swelling agent improved the adsorption performance of the nanofiber membrane by about 45% in 1 hour. There was no detectable leached Zr in the remaining solution, indicating that the composite membrane was stable during the course. This work provides a new strategy for functional promotion of electrospun nanofiber membrane and will be helpful for environmentally friendly applications of nanocomposites in water remediation.
{"title":"Reviving of embedded MOFs in electrospun nanofibers by solvent swelling for arsenate removal in water","authors":"Qi Guo, Yuan Li, Xiaoyan Wei, Yi-Wen Shen, Xuelei Duan, Kai-Qiang He, Ke-gang Zhang, Chunmei Yuan","doi":"10.1080/26395940.2022.2136111","DOIUrl":"https://doi.org/10.1080/26395940.2022.2136111","url":null,"abstract":"ABSTRACT Nanoparticles coated with electrospun fibers cannot fully exert their inherent properties. Therefore, it is critical to develop a method to enhance the intrinsic performances of the composite fibers. In this work, UiO-66/PAN composite nanofiber membranes with good physicochemical properties were prepared by electrospinning, and a swelling method was developed to improve its performances. The adsorption performance for arsenate was improved by 19.9% or 49% after swelling by nitrobenzene or pyridine solvent, respectively. The swelling process did not change the morphologies and structures of the fibers. The pyridine solvent as the swelling agent improved the adsorption performance of the nanofiber membrane by about 45% in 1 hour. There was no detectable leached Zr in the remaining solution, indicating that the composite membrane was stable during the course. This work provides a new strategy for functional promotion of electrospun nanofiber membrane and will be helpful for environmentally friendly applications of nanocomposites in water remediation.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":"31 1","pages":"496 - 500"},"PeriodicalIF":3.3,"publicationDate":"2022-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73233338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-06DOI: 10.1080/26395940.2022.2130825
Yixiao Wu, Huijun Ding, L. Wan, Weihao Zhang, Yan Zhang, L. Yang, Chong Zhao
ABSTRACT This study compared the single and joint toxic effects of clarithromycin (CLA) and levofloxacin (LEV) on Microcystis aeruginosa. CLA was more toxic to algae than LEV, and the 96h-EC50s were 43.31 and 437.6 µg/L, respectively. The synergetic interaction of two antibiotics was detected. This synergetic action was also observed on Fv/Fm, chlorophyll a, and phycobiliprotein. The increase in reactive oxygen species (ROS) and malonaldehyde demonstrated that antibiotic exposure caused severe oxidative stress, which can destroy the membrane system, hinder photosynthesis and finally inhibit cell growth. The antioxidant enzyme activities were improved significantly, especially in the joint exposure treatment, which indicates that the antioxidant defense system can be activated to scavenge ROS. The release of microcystins (MCs) was accelerated under single or combined antibiotic exposure. The promotion of MCs discharge from cyanobacteria caused by the co-occurrence of CLA and LEV in water environment may pose a severe ecological risk to ecosystem.
{"title":"Single and combined toxic effects of clarithromycin and levofloxacin on Microcystis aeruginosa","authors":"Yixiao Wu, Huijun Ding, L. Wan, Weihao Zhang, Yan Zhang, L. Yang, Chong Zhao","doi":"10.1080/26395940.2022.2130825","DOIUrl":"https://doi.org/10.1080/26395940.2022.2130825","url":null,"abstract":"ABSTRACT This study compared the single and joint toxic effects of clarithromycin (CLA) and levofloxacin (LEV) on Microcystis aeruginosa. CLA was more toxic to algae than LEV, and the 96h-EC50s were 43.31 and 437.6 µg/L, respectively. The synergetic interaction of two antibiotics was detected. This synergetic action was also observed on Fv/Fm, chlorophyll a, and phycobiliprotein. The increase in reactive oxygen species (ROS) and malonaldehyde demonstrated that antibiotic exposure caused severe oxidative stress, which can destroy the membrane system, hinder photosynthesis and finally inhibit cell growth. The antioxidant enzyme activities were improved significantly, especially in the joint exposure treatment, which indicates that the antioxidant defense system can be activated to scavenge ROS. The release of microcystins (MCs) was accelerated under single or combined antibiotic exposure. The promotion of MCs discharge from cyanobacteria caused by the co-occurrence of CLA and LEV in water environment may pose a severe ecological risk to ecosystem.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":"10 1","pages":"482 - 495"},"PeriodicalIF":3.3,"publicationDate":"2022-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73902823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-30DOI: 10.1080/26395940.2022.2128884
Hadiyanto Hadiyanto, A. Khoironi, I. Dianratri, K. Huda, S. Suherman, F. Muhammad
ABSTRACT This research aimed to evaluate the effectiveness of microalgae Dunaliella salina in the biodegradation process of oxidized oxium and HDPE plastics. Microalgae and microplastic interactions were evaluated in two 1 L glass bioreactors containing D. salina with oxium microplastics and oxidized HDPE at various concentrations (100 mg/500 mL, 200 mg/500 mL, and 300 mg/500 mL) for 15 d. The results showed a more significant decrease in alkene functional groups in oxium plastics than in HDPE. In addition, there was a change in the oxium functional group with the formation of carbonyl, ether, and primary alcohol. The growth rate of D. salina decreased significantly after interaction with oxidized HDPE microplastics compared to oxium interaction. We established that oxium plastics have a faster biodegradation ability owing to the addition of additives to the plastic. However, oxidation pre-treatment with H2O2 on HDPE plastic can also accelerate the plastic degradation process.
{"title":"Biodegradation of oxidized high-density polyethylene and oxo-degradable plastic using microalgae Dunaliella salina","authors":"Hadiyanto Hadiyanto, A. Khoironi, I. Dianratri, K. Huda, S. Suherman, F. Muhammad","doi":"10.1080/26395940.2022.2128884","DOIUrl":"https://doi.org/10.1080/26395940.2022.2128884","url":null,"abstract":"ABSTRACT This research aimed to evaluate the effectiveness of microalgae Dunaliella salina in the biodegradation process of oxidized oxium and HDPE plastics. Microalgae and microplastic interactions were evaluated in two 1 L glass bioreactors containing D. salina with oxium microplastics and oxidized HDPE at various concentrations (100 mg/500 mL, 200 mg/500 mL, and 300 mg/500 mL) for 15 d. The results showed a more significant decrease in alkene functional groups in oxium plastics than in HDPE. In addition, there was a change in the oxium functional group with the formation of carbonyl, ether, and primary alcohol. The growth rate of D. salina decreased significantly after interaction with oxidized HDPE microplastics compared to oxium interaction. We established that oxium plastics have a faster biodegradation ability owing to the addition of additives to the plastic. However, oxidation pre-treatment with H2O2 on HDPE plastic can also accelerate the plastic degradation process.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":"9 1","pages":"469 - 481"},"PeriodicalIF":3.3,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77972040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-29DOI: 10.1080/26395940.2022.2128883
Yi-Chun Lin, Yu-Chieh Chen, B. Hwang, Chen-Peng Chen
ABSTRACT The Global Solar Ultraviolet (UV) Index provides limited information on health effects due to over-exposure. This study investigated the change in skin physiology in response to solar UV irradiation and the protective efficacy of a sunscreen. Fourteen female participants were divided into two groups, sunscreen users and non-users, and for 8 weeks they received solar irradiation and were monitored for change in the erythema-index (E-index), melanin-index, skin capillary blood flow, skin moisture, transepidermal water loss (TEWL), and skin temperature. The E-index and TEWL responded proportionally to solar radiation and could serve as indices of acute health effects from UV exposure. In the sun-radiated area, the E-index and TEWL measured on the forearm of the non-users were 111.3% and 138.4% of the levels determined for the users, respectively. Although thermal sensation and thermo-physiology were correlated, physiological monitoring was preferred over thermal sensation survey in evaluating the impact of solar UV irradiation.
{"title":"Acute dermal effects of solar UV irradiation and efficacy of sunscreen use","authors":"Yi-Chun Lin, Yu-Chieh Chen, B. Hwang, Chen-Peng Chen","doi":"10.1080/26395940.2022.2128883","DOIUrl":"https://doi.org/10.1080/26395940.2022.2128883","url":null,"abstract":"ABSTRACT The Global Solar Ultraviolet (UV) Index provides limited information on health effects due to over-exposure. This study investigated the change in skin physiology in response to solar UV irradiation and the protective efficacy of a sunscreen. Fourteen female participants were divided into two groups, sunscreen users and non-users, and for 8 weeks they received solar irradiation and were monitored for change in the erythema-index (E-index), melanin-index, skin capillary blood flow, skin moisture, transepidermal water loss (TEWL), and skin temperature. The E-index and TEWL responded proportionally to solar radiation and could serve as indices of acute health effects from UV exposure. In the sun-radiated area, the E-index and TEWL measured on the forearm of the non-users were 111.3% and 138.4% of the levels determined for the users, respectively. Although thermal sensation and thermo-physiology were correlated, physiological monitoring was preferred over thermal sensation survey in evaluating the impact of solar UV irradiation.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":"5 1","pages":"456 - 468"},"PeriodicalIF":3.3,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86450649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-28DOI: 10.1080/26395940.2022.2128885
Lingqi Lin, Yulin Pu, Di Wang, Xi Guo, Peng Wang, Zhong Lu
ABSTRACT Pore-scale modeling plays an indispensable role in unveiling the migration mechanism of oil pollutants into the water-saturated soil. Navier Stokes equations and conservation of mass, coupled with the phase field method, are employed to investigate the effect of soil wettability on oil pollutants migration into the soil porous media. The results show that the oil-water interface in the migration process does not advance evenly in three wetting states. When the model system is in oil-wetting state, oil pollutants obviously migrate at a higher speed. Through monitoring the evolution of oil front location and analyzing the velocity distribution vertical to the flow direction at the central axis of the model, the channel corresponding to the peak velocity is the dominant flow channel for the oil pollutants. This study will have the potential ability in obtaining the pore-scale migration regulation of oil pollutions as well as more accurately predicting the pollution range.
{"title":"Migration characteristics of oil pollutants into soil pores influenced by surface wettability","authors":"Lingqi Lin, Yulin Pu, Di Wang, Xi Guo, Peng Wang, Zhong Lu","doi":"10.1080/26395940.2022.2128885","DOIUrl":"https://doi.org/10.1080/26395940.2022.2128885","url":null,"abstract":"ABSTRACT Pore-scale modeling plays an indispensable role in unveiling the migration mechanism of oil pollutants into the water-saturated soil. Navier Stokes equations and conservation of mass, coupled with the phase field method, are employed to investigate the effect of soil wettability on oil pollutants migration into the soil porous media. The results show that the oil-water interface in the migration process does not advance evenly in three wetting states. When the model system is in oil-wetting state, oil pollutants obviously migrate at a higher speed. Through monitoring the evolution of oil front location and analyzing the velocity distribution vertical to the flow direction at the central axis of the model, the channel corresponding to the peak velocity is the dominant flow channel for the oil pollutants. This study will have the potential ability in obtaining the pore-scale migration regulation of oil pollutions as well as more accurately predicting the pollution range.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":"21 1","pages":"446 - 455"},"PeriodicalIF":3.3,"publicationDate":"2022-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87719904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ABSTRACT In this study, micro Coix lacryma-jobi L. vertical flow constructed wetlands with 0, 10 and 30 mg/L Cr6+ (in the form of K2Cr7O2) in the water sources were constructed to study the purification efficiency of chromium-contaminated wastewater, bacterial community diversity, chromium chemical speciation distribution and other indicators. The results showed that the constructed wetlands had high purification efficiency for chromium-contaminated wastewater. The removal rate of Cr6+ reached 99.61% and 95.45% in 10 and 30 mg/L Cr6+ treatment. The bacterial diversity index was unaffected by Cr6+ treatment; however, the bacterial richness index declined dramatically as Cr6+ treatment concentration increased. The bacterial community structure was influenced by the substrates pH, moisture content, organic matter and total chromium content. The abundance of Burkholderiaceae (uncultured) and Saccharimonadales (uncultured) were positively correlated with non-residual chromium content. The results contributed to understand the effect of chromium on bacterial community structure by considering the chromium chemical speciation.
{"title":"Effects of Cr6+ stress on chromium chemical speciation distribution and bacterial community structure in the Coix lacryma-jobi L. constructed wetlands","authors":"Zirui Fang, Qianyun Wang, Cunqi Zhang, Sulian Li, Shuai Li, Xueli Wang, Xiran Cheng, Zhenli He, Zhigang Li","doi":"10.1080/26395940.2022.2128427","DOIUrl":"https://doi.org/10.1080/26395940.2022.2128427","url":null,"abstract":"ABSTRACT In this study, micro Coix lacryma-jobi L. vertical flow constructed wetlands with 0, 10 and 30 mg/L Cr6+ (in the form of K2Cr7O2) in the water sources were constructed to study the purification efficiency of chromium-contaminated wastewater, bacterial community diversity, chromium chemical speciation distribution and other indicators. The results showed that the constructed wetlands had high purification efficiency for chromium-contaminated wastewater. The removal rate of Cr6+ reached 99.61% and 95.45% in 10 and 30 mg/L Cr6+ treatment. The bacterial diversity index was unaffected by Cr6+ treatment; however, the bacterial richness index declined dramatically as Cr6+ treatment concentration increased. The bacterial community structure was influenced by the substrates pH, moisture content, organic matter and total chromium content. The abundance of Burkholderiaceae (uncultured) and Saccharimonadales (uncultured) were positively correlated with non-residual chromium content. The results contributed to understand the effect of chromium on bacterial community structure by considering the chromium chemical speciation.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":"138 1","pages":"433 - 445"},"PeriodicalIF":3.3,"publicationDate":"2022-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84790225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-22DOI: 10.1080/26395940.2022.2125445
Pingnan Zhao, Shen Wang, Dong Liu, Hongxu Li, Song Han, Ming Li
ABSTRACT Straw had huge annual production, burning it in the air will cause serious air pollution. Burning straw into biochar and returning biochar to the field will not only make effective use of straw resources, but also improve soil quality. Different preparation conditions and addition levels of biochar were used to investigate the ammonia nitrogen, nitrate nitrogen, and total nitrogen contents in the soil leaching solution. The results showed that biochar had a favorable adsorption effect on ammonia nitrogen, the cumulative leaching of ammonia nitrogen reduced by 80.16% in the 2% and 400°C biochar addition treatment compared to that without adding biochar. The final leaching solution electrical conductivity value of the experimental group of biochar prepared at 500°C with 1% addition was the highest at 445 μS/cm. Sequencing of microorganisms revealed that biochar altered the structure and abundance of the soil microbial community, particularly increased the relative abundance of nitrifying bacteria.
{"title":"Study on influence mechanism of biochar on soil nitrogen conversion","authors":"Pingnan Zhao, Shen Wang, Dong Liu, Hongxu Li, Song Han, Ming Li","doi":"10.1080/26395940.2022.2125445","DOIUrl":"https://doi.org/10.1080/26395940.2022.2125445","url":null,"abstract":"ABSTRACT Straw had huge annual production, burning it in the air will cause serious air pollution. Burning straw into biochar and returning biochar to the field will not only make effective use of straw resources, but also improve soil quality. Different preparation conditions and addition levels of biochar were used to investigate the ammonia nitrogen, nitrate nitrogen, and total nitrogen contents in the soil leaching solution. The results showed that biochar had a favorable adsorption effect on ammonia nitrogen, the cumulative leaching of ammonia nitrogen reduced by 80.16% in the 2% and 400°C biochar addition treatment compared to that without adding biochar. The final leaching solution electrical conductivity value of the experimental group of biochar prepared at 500°C with 1% addition was the highest at 445 μS/cm. Sequencing of microorganisms revealed that biochar altered the structure and abundance of the soil microbial community, particularly increased the relative abundance of nitrifying bacteria.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":"1 1","pages":"419 - 432"},"PeriodicalIF":3.3,"publicationDate":"2022-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83948027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-15DOI: 10.1080/26395940.2022.2123046
Wanlin Lyu, Shujia Zhang, Yijia Xie, Rongfan Chen, Xiaoling Hu, Bin Wang, Wenbin Guo, Hongyu Wang, Jie Xing, Daochun Zhou
ABSTRACT Chlorella sorokiniana, the dominant microalgal strain with fast growth rate and high nutrients’ adsorption rate, was selected from the mature MBGS system. After adding C6-HSL and 3-oxo-C12-HSL to the MBGS consortia formed by combining it with mature AGS, it could also be found that C6-HSL accelerated the denitrification rate and improved the removal rate of TIN and TP effectively. Besides, the promoting effect of C6-HSL was slightly higher than that of 3-oxo-C12-HSL. By adjusting the concentration of C6-HSL (5 × 10−9, 7.5 × 10−7 and 2.5 × 10−5mol/L), the results revealed that adding 5 × 10−9mol/L C6-HSL significantly improved the efficiency of nitrogen and phosphorus removal in MBGS consortia. However, adding higher concentration of C6-HSL (7.5 × 10−7mol/L) would lead to deterioration of TIN and COD degradation. The content of EPS secreted by bacteria was regulated by different concentrations of AHLs, and the PS/PN value decreased with the increasing trend of C6-HSL concentration. GRAPIHCAL ABSTRACT
{"title":"Effects of the exogenous N-acylhomoserine lactones on the performances of microalgal-bacterial granular consortia","authors":"Wanlin Lyu, Shujia Zhang, Yijia Xie, Rongfan Chen, Xiaoling Hu, Bin Wang, Wenbin Guo, Hongyu Wang, Jie Xing, Daochun Zhou","doi":"10.1080/26395940.2022.2123046","DOIUrl":"https://doi.org/10.1080/26395940.2022.2123046","url":null,"abstract":"ABSTRACT Chlorella sorokiniana, the dominant microalgal strain with fast growth rate and high nutrients’ adsorption rate, was selected from the mature MBGS system. After adding C6-HSL and 3-oxo-C12-HSL to the MBGS consortia formed by combining it with mature AGS, it could also be found that C6-HSL accelerated the denitrification rate and improved the removal rate of TIN and TP effectively. Besides, the promoting effect of C6-HSL was slightly higher than that of 3-oxo-C12-HSL. By adjusting the concentration of C6-HSL (5 × 10−9, 7.5 × 10−7 and 2.5 × 10−5mol/L), the results revealed that adding 5 × 10−9mol/L C6-HSL significantly improved the efficiency of nitrogen and phosphorus removal in MBGS consortia. However, adding higher concentration of C6-HSL (7.5 × 10−7mol/L) would lead to deterioration of TIN and COD degradation. The content of EPS secreted by bacteria was regulated by different concentrations of AHLs, and the PS/PN value decreased with the increasing trend of C6-HSL concentration. GRAPIHCAL ABSTRACT","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":"263 1","pages":"407 - 418"},"PeriodicalIF":3.3,"publicationDate":"2022-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83506074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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