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Nitrogen-doped biochar derived from corn straw for CO2 adsorption: a new vision on nitrogen sources comparison

Carbon Research 2024年第1期3卷 1-12页

作者： Sun, Yuxuan Jia, Jixiu Liu, Zhidan Liu, Ziyun Huo, Lili Zhao, Lixin Zhao, Yanan Yao, Zonglu Key Laboratory of Low-carbon Green Agriculture in North China Ministry of Agriculture and Rural Affairs P. R. China Institute of Environment and Sustainable Development in Agriculture CAAS Beijing100081 China Key Laboratory of Agricultural Engineering in Structure and Environment Ministry of Agriculture College of Water Resources and Civil Engineering China Agricultural University Beijing100083 China

Biochar as a highly promising CO2 adsorbent is of great significance in addressing global warming and promoting human health. Research has shown that nitrogen doping improves the CO2 adsorption performance of biochar, but selecting chemical nitrogen sources such as urea and melamine to prepare nitrogen-doped biochar is not conducive to green production and environmental protection. Therefore, it is necessary to identify a new nitrogen source to enhance the emission reduction characteristics of this process. This study selected corn straw as the raw material and cow manure as a representative protein-based nitrogen source to explore its potential as a urea substitute and reveal the hydrothermal carbonization doping mechanism of different nitrogen sources. The results indicated that in raw materials with the same C/N ratio, biochar prepared from cow manure as the nitrogen source had a better doping effect and CO2 adsorption performance. Moreover, a moderate amount of cow manure was beneficial for efficient nitrogen doping and the adsorption of CO2 by biochar, with a maximum CO2 adsorption performance improvement of 32.7%. Due to the different carbon-nitrogen bonds of the different nitrogen sources, urea was more likely to retain amino groups, while macromolecular protein nitrogen sources tended to retain structural nitrogen. The results of this study provide new ideas and theoretical support for preparing other nitrogen-doped carbon materials derived from biomass. Graphical Abstract: (Figure presented.) © The Author(s) 2024.

关键词： Straw

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A novel and visible ratiometric fluorescence determination of carbaryl based on red emissive carbon dots by a solvent-free method

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Chinese Chemical Letters 2025年第2期36卷 286-290页

作者： Meiling Xu Xinyang Li Pengyuan Liu Junjun Liu Xiao Han Guodong Chai Shuangling Zhong Bai Yang Liying Cui College of Resources and Environment Jilin Agricultural UniversityChangchun 130118China State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012China Key Laboratory of Straw Biology and Utilization The Ministry of EducationJilin Agricultural UniversityChangchun 130118China

In this study,a simple and effective ratiometric fluorescence method has been developed for carbaryl detection,utilizing red emissive carbon dots(R-CDs).The underlying principle of this proposed strategy relies on the rapid hydrolysis of carbaryl under an alkaline condition and production of 1-naphthol with blue-emission at 462 ***,the as-synthesized R-CDs(Em.677 nm),serve as a reference,enhancing the visual tracking of carbaryl through the transformation of fluorescent color from red to *** concentration of carbaryl exhibits a commendable linear correlation with the ratio of fluorescence intensity,ranging from 0 to 20μg/m L(R^(2)=0.9989)with a low detection limit of 0.52 ng/m ***,the described methodology can be used for the enzyme-free visual assay of carbaryl,even in the presence of other carbamate pesticides and metal ions,in tap water and lake water samples with excellent accuracy(spiked recoveries,94%-106.1%),high precision(relative standard deviation(RSD)≤2.42),and remarkable *** fast and highly sensitive naked-eye ratiometric sensor holds immense promise for carbaryl detection in intricate environments and food safety fields.

关键词： Carbon dots Visual detection Fluorescence sensor Quantum yield Carbaryl detection

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Heteroatom-doped biochar devised from cellulose for CO_(2) adsorption:a new vision on competitive behavior and interactions of N and S

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Biochar 2023年第1期5卷 1305-1318页

作者： Yuxuan Sun Jixiu Jia Zhidan Liu Ziyun Liu Lili Huo Lixin Zhao Yanan Zhao Zonglu Yao Key Laboratory of Low-Carbon Green Agriculture in North China Ministry of Agriculture and Rural Affairs P.R.ChinaInstitute of Environment and Sustainable Development in AgricultureCAASBeijing 100081China Laboratory of Environment-Enhancing Energy(E2E) Key Laboratory of Agricultural Engineering in Structure and EnvironmentMinistry of AgricultureCollege of Water Resources and Civil EngineeringChina Agricultural UniversityBeijing 100083China

Biochar,as a potential CO_(2) adsorbent,is of great significance in addressing the problem of global *** studies have demonstrated that the CO_(2) adsorption performance of biochar can be improved by nitrogen and sulfur ***-doping can integrate the structure and function of two ***,the physicochemical interaction of nitrogen and sulfur during doping and the CO_(2) adsorption process remains unclear in co-doped *** this study,the heteroatom-doped biochar was prepared with different additives(urea,sodium thiosulfate,and thiourea)via hydrothermal carbonization,and the physicochemical interaction of nitrogen and sulfur in co-doped biochar was investigated *** findings revealed that nitrogen and sulfur competed for limited doped active sites on the carbon skeleton during the co-doping ***,thiourea retained the amino group on the surface of biochar to a great extent due to carbon-sulfur double bond breaking and bonding,which facilitated the formation of pore in the activation ***,co-doping had no significant improvement effect although nitrogen and sulfur doping separately enhanced the CO_(2) adsorption performance of biochar by 11.9%and 8.5%.The nitrogencontaining and sulfur-containing functional groups in co-doped biochar exhibited mutual inhibition in the process of CO_(2) *** findings of this study will have pertinent implications in the application of N/S co-doped biochar for CO_(2) adsorption.

关键词： N/S co-doping Biochar CO_(2)adsorption Cellulose Physicochemical interaction

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Effects of LED light spectrum on the growth and energy use efficiency of eggplant transplants

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International Journal of agricultural and Biological engineering 2023年第3期16卷 23-29页

作者： Hao Yang Ting Wang Fang Ji Qing Zhou Jianfeng Wang Key Laboratory of Agricultural Engineering in Structure and Environment of Ministry of Agriculture and Rural Affairs College of Water Resources&Civil EngineeringChina Agricultural UniversityBeijing 100083China Jilin Academy of Vegetable and Flower Sciences Key Laboratory of Facility VegetableChangchun 130119China

To enhance the transplants’growth and reduce energy use efficiency,Eggplant(Solanum melongena L.)transplants(*** 21)were cultivated in a plant factory laboratory under different LED light *** experimental treatments included white plus blue LED lights(R:B=0.5,WB0.5),white LED lights(R:B=0.9,W0.9),white plus red LED lights(R:B=2.7,WR2.7),white plus red plus UV lights(R:B=3.8,WRUV3.8),and red plus blue plus green LED lights(R:B=5.4,RBG5.4).The transplants were grown for 30 d under a light intensity of 250μmol/m2·s and a photoperiod of 16 h/*** morphological indicators and biomass accumulation of eggplant transplants were significantly higher in the W0.9 treatment compared to the other experimental *** photosynthetic quantum yield in the W0.9 treatment exhibited an increase of over 22%compared to that in the WR2.7 *** shoot dry weight of the W0.9 treatment reached(381±41)mg/plant and the leaf area was(113.3±8.9)cm^(2),indicating a higher health index compared to the other ***,there were no significant differences in the net photosynthetic rate of the leaves among all *** energy yield(EY)of the W0.9 treatment was(37.7±1.8)g/kW·h,which was higher than ***,considering the high quality of transplants and the maximization of energy use efficiency,the LED light spectrum in the eggplant transplants production was recommended to the white LED light with an R:B ratio of 0.9.

关键词： eggplant transplants LED light spectrum growth energy use efficiency

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Insights on selective Pb adsorption via O 2p orbit in UiO-66 containing rich-zirconium vacancies

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Chinese Chemical Letters 2024年第8期35卷 357-361页

作者： Yu-Hang Li Shuai Gao Lu Zhang Hanchun Chen Chong-Chen Wang Haodong Ji Eco-environment and Resource Efficiency Research Laboratory School of Environment and EnergyPeking University Shenzhen Graduate SchoolShenzhen 518055China Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation School of Environment and Energy EngineeringBeijing University of Civil Engineering and ArchitectureBeijing 100044Chin

Herein,we constructed defective UiO-66 with rich Zr vacancy structure model,in which the defective structure was verified by various ***,the Pb adsorption experiments affirmed that defective UiO-66 could display better adsorption and selective adsorption ability than that of perfect *** results of partial density of states(PDOS)and Mulliken charge population indicated that the blue shift of O 2p and Zr 4d orbit induced the electron rearrangement of atoms closed to the bonding sites,while the positive charge number of Zr atoms decreased than *** with the expansion of pore size,Pb atom was more inclined to transfer and bond with unsaturated coordination *** significantly,quantitative structure-activity relationships(QSARs)demonstrated that selective capture of Pb instead of Zn,Cu,Cd and Hg displayed by defective UiO-66 was determined jointly by bond strength,adsorption energy and electron *** work provided some theoretical direction for the purpose of the fabrication of adsorbent and the investigation of mechanism.

关键词： Selective adsorption Heavy metal Density functional theory UiO-66 Zr vacancies

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Enhanced remediation of chlorpyrifos-contaminated soil by immobilized strain Bacillus H27

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Journal of environmental Sciences 2024年第10期144卷 172-184页

作者： Changrui Liu Shengfang Wen Shuhan Li Yu Tian Lanjun Wang Lusheng Zhu Jun Wang Young Mo Kim Jinhua Wang National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources Key Laboratory of Agricultural Environment in Universities of ShandongCollege of Resources and EnvironmentShandong Agricultural UniversityTaian 271018China Department of Civil and Environmental Engineering Hanyang UniversitySeongdong-guSeoul 04763Korea

Chlorpyrifos is a pesticide widely used in agricultural production with a relatively long residual half-life in *** the problem of residual chlorpyrifos is of universal *** this study,rice hull biochar was used as an immobilized carrier to prepare the immobilized strain H27 for the remediation of chlorpyrifos-contamination *** microorganisms after remediation were investigated by ecotoxicological *** immobilized strain H27 had the highest removal rate of chlorpyrifos when 10%bacterial solution was added to the liquid medium containing 0.075-0.109 mm diameter biochar cultured for 22 *** study on the removal of chlorpyrifos by immobilized strain H27 showed that the initial concentration of chlorpyrifos in solution was 25mg/L,and the removal rate reached 97.4%after 7 days of *** the soil,the removal rate of the immobilized bacteria group increased throughout the experiment,which was significantly higher than that of the free bacteria and biochar treatment *** Biolog-ECO test,T-RFLP and RT-RCR were used to study the effects of the soil microbial community and nitrogen cycling functional genes during chlorpyrifos *** was found that ICP group had the highest diversity index among the four treatment *** microflora of segment containing 114 bp was the dominant bacterial community,and the dominant microflora of the immobilized bacteria group was more evenly *** influence of each treatment group on ammonia-oxidizing bacteria(AOB)was greater than on ammonia-oxidizing archaea(AOA).This study offers a sound scientific basis for the practical application of immobilized bacteria to reduce residual soil pesticides.

关键词： Chlorpyrifos Immobilized microorganisms Soil remediation Soil microorganism

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Two-stage seedling cultivation method for sweet peppers combining closed plant factory and solar greenhouse

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International Journal of agricultural and Biological engineering 2023年第6期16卷 56-66页

作者： Hongbo Cui Fang Ji Yanni Liu Zhengyang Luo Xiufeng Wang Jianfeng Wang Key Laboratory of Facility Vegetable of Jilin Province Jilin Academy of Vegetable and Flower SciencesChangchun 130119China Key Laboratory of Agricultural Engineering in Structure and Environment of MARA College of Water Resources&Civil EngineeringChina Agricultural UniversityBeijing 100083China College of Horticulture Jilin Agricultural UniversityChangchun 130033China

This study introduced a two-stage cultivation method for sweet pepper seedlings, integrating the strengths of a closed plant factory and solar greenhouse, to mitigate the environmental constraints in Northeast China during the early spring season. In the first stage, seedlings were cultivated in a closed plant factory, followed by a second stage in a solar greenhouse. Four treatments- T1 (9 and 36 d), T2 (12 and 33 d), T3 (15 and 30 d), and T4 (18 and 27 d) - were designed for the first and second stages, respectively, with solar greenhouse-only approach serving as the control (CK). The findings reveal that the two-stage methodology significantly outperformed the control across multiple metrics, including seedling health index, chlorophyll content, photosynthetic capacity, yield, etc. Specifically, T3 emerged as optimal, boosting the health index by 38.59%, elevating chlorophyll content by 39.61%, increasing net photosynthesis by 34.61%, and augmenting yield per plant by 40.67%. Additionally, T3 expedited the time to harvest by 25 d compared to the control. Although the seedling cost for T3 was 0.12 RMB yuan higher, the benefits offset the additional investment. In conclusion, the two-stage cultivation method effectively leverages the advantages of both closed-plant factories and solar greenhouses, resulting in superior seedling quality compared to using only solar greenhouses. It offers a practical and economically viable solution for enhancing the quality and yield of sweet pepper seedlings, thus contributing to the progress in the field of facility seedling cultivation research.

关键词： two-stage seedling cultivation sweet peppers closed plant factory solar greenhouse

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Effect of sulfamethazine on the horizontal transfer of plasmid-mediated antibiotic resistance genes and its mechanism of action

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Journal of environmental Sciences 2023年第5期127卷 399-409页

作者： Xiaojing Yan Wenwen Liu Shengfang Wen Lanjun Wang Lusheng Zhu Jun Wang Young Mo Kim Jinhua Wang National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources Key Laboratory of Agricultural Environment in Universities of ShandongCollege of Resources and EnvironmentShandong Agricultural UniversityTai’an 271018China Department of Civil and Environmental Engineering Hanyang UniversitySeongdong-guSeoul 04763Korea

As a new type of environmental pollutant,antibiotic resistance genes(ARGs)pose a huge challenge to global *** gene transfer(HGT)represents an important route for the spread of *** widespread use of sulfamethazine(SM2)as a broad-spectrum bacteriostatic agent leads to high residual levels in the environment,thereby increasing the spread of ***,we chose to study the effect of SM2 on the HGT of ARGs mediated by plasmid RP4 from Escherichia coli(***)HB101 to *** NK5449 as well as its mechanism of *** results showed that compared with the control group,SM2 at concentrations of 10 mg/L and 200 mg/L promoted the HGT of ARGs,but transfer frequency decreased at concentrations of 100 mg/L and 500 mg/*** transfer frequency at 200 mg/L was 3.04×10^(−5),which was 1.34-fold of the control *** mechanism of SM2 improving conjugation transfer is via enhancement of the mRNA expression of conjugation genes(trbBP,trfAP)and oxidative stress genes,inhibition of the mRNA expression of vertical transfer genes,up regulation of the outer membrane protein genes(ompC,ompA),promotion of the formation of cell pores,and improvement of the permeability of cell membrane to promote the conjugation transfer of plasmid *** results of this study provide theoretical support for studying the spread of ARGs in the environment.

关键词： Sulfamethazine Plasmid Antibiotic resistance gene Conjugation transfer

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Revised Gini coefficient: a new index to evaluate the environmental parameter distribution in poultry buildings 11

Revised Gini coefficient: a new index to evaluate the enviro...

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11th European Conference on Precision Livestock Farming

作者： Zhao, Mengwei Xiao, Pan Liang, Chao Wang, Chaoyuan College of Water Resources and Civil Engineering China Agricultural University Beijing100083 China Key Laboratory of Agricultural Engineering in Structure and Environment Ministry of Agriculture and Rural Affairs Beijing100083 China

ISBN: (纸本)9791221067361

The traditional coefficient of variation (CV) is widely used to evaluate the non-uniformity of environmental parameter distribution in buildings. However, CV has no benchmark, no unified comparison criterion, and is still affected by dimension, leading to limited applications. To overcome these issues, this study proposes a revised Gini coefficient through Min-Max normalization to enhance the evaluation of non-uniformity. CFD simulations were conducted to obtain the velocity and temperature distributions in a commercial broiler building with two typical ventilation systems (i.e., cross ventilation and tunnel ventilation). The non-uniformity of indoor velocity and temperature distributions was evaluated using both CV and the revised Gini coefficient. The results show that: (1) The revised Gini coefficient provides a clear boundary (i.e., [0, 1]), the maximum value of which is 0.604 (but 2.105 for CV) in the calculation results. (2) The revised Gini coefficient can eliminate the dimensional influence, which makes the distribution uniformity between different environmental parameters more equitable. © 2024 11th European Conference on Precision Livestock Farming. All rights reserved.

关键词： Green buildings

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MOFs-based functional materials for aqueous micro/nanoplastics elimination

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Chinese Chemical Letters 2023年第9期34卷 5-6页

作者： Chong-Chen Wang Zi-Chen Zhang Xiao-Hong Yi Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation School of Environment and Energy EngineeringBeijing University of Civil Engineering and ArchitectureBeijing 100044China

The massive distribution of microplastics(MPs)and even nanoplastics(NPs),which resulted from the wide utilization and mismanagement of plastics,exerted serious risk and threat to ecosystem and human health due to thei... 详细信息

关键词： plastics functional massive

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