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Bamboo charcoal addition enhanced the nitrogen removal of anammox granular sludge with COD:Performance,physicochemical characteristics and microbial community

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Journal of Environmental Sciences 2022年第5期34卷 55-64页

作者： Menglei Guo Ying Jiang Junxiang Xie Qianfei Cao Qun Zhang Adams Mabruk Chongjun Chen School of Environmental Science and Engineering Suzhou University of Science and TechnologySuzhou 215009China Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment Suzhou 215009China Jiangsu Provincial Key Laboratory of Environmental Science and Engineering Suzhou University of Science and TechnologySuzhou 215009China

The effects of different chemical oxygen demand(COD)concentrations on the anammox granular sludge with Bamboo charcoal(BC)addition were evaluated in UASB reactor.The results showed that the average total nitrogen(TN)removal efficiency was reduced from 85.9%to 81.4%when COD concentration was increased from 50 to 150 mg/L.However,the TN removal efficiency of BC addition reactors was dramatically 3.1%-6.4%higher than that without BC under different COD concentrations.The average diameter of granular sludge was 0.13 mm higher than that without BC.The settling velocity was increased by elevated COD concentration,while the EPS and VSS/SS were increased with BC addition.The high-throughput Miseq sequencing analyses revealed that the bacterial diversity and richness were decreased under COD addition,and the Planctomycetes related to anammox bacteria were Candidatus Brocadia and Candidatus Kuenenia.The Metagenomic sequencing indicated that the abundance of denitrification related functional genes all increased with elevated COD,while the abundance of anammox related functional genes of decreased.The func-tional genes related to anammox was hydrazine synthase encoding genes(hzsA,hzsB and hzsB).The average relative abundance of hzs genes in the reactor with BC addition was higher than the control at COD concentrations of 50 mg/L and 150 mg/L.The functional genes of denitrification mediated by BC were higher than those without BC throughout the operation phase.It is interesting to note that BC addition greatly enriched the related func-tional genes of denitrification and anammox.

关键词： Anammox granular sludge Bamboo charcoal COD concentration Nitrogen removal Microbial community

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Impacts of dietary supplementation of bamboo vinegar and charcoal powder on growth performance,intestinal morphology,and gut microflora of large-scale loach Paramisgurnus dabryanus

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Journal of Oceanology and Limnology 2023年第3期41卷 1187-1196页

作者： Kwangjin JU Myongsuk KIL Sanghyok RI Tongchol KIM Juhyok KIM Wei SHI Lining ZHANG Maocang YAN Jiongming ZHANG Guangxu LIU College of Animal Sciences Zhejiang UniversityHangzhou 310058China College of Aquaculture Wonsan Fisheries UniversityWonsan 999093DPR Korea College of Life Science Kim Hyong Jik University of EducationPyongyang 99903DPR Korea Zhejiang Mariculture Research Institute Wenzhou 325005China

Although accumulating data demonstrate that dietary supplementation of bamboo vinegar and charcoal powder(BVC)can significantly strengthen the immunity and boost the growth of domestic animals,its application potency still awaits verification in commercial fish species such as the large-scale loach Paramisgurnus dabryanus.The impacts of 90-day dietary supplementation of 1%and 2%BVC on survival and growth performance of the loach,and on the intestinal morphological characteristics and gut microflora were analyzed.Our data show that the large-scale loach supplied with BVC at the experimental doses had significant higher survival rates and better growth performance(indicated by greater weight gain(1.13–1.14 times),higher specific growth rate(1.04 times),and lower feed conversion ratio(0.88–0.89 times))compared to that of the control(P<0.05).Histological examination revealed significant longer villus(3.22–5.54 times),deeper crypt(1.77–1.87 times),and thicker muscle(1.59–3.17 times)in the intestines of large-scale loach fed with BVC(P<0.05).Furthermore,we found that the gut microflora consisted of significantly fewer proportions of potential pathogenic bacterial species(Aeromonas veronii and Escherichia coli),but significantly greater proportions of beneficial microbes(Lactococus raffinolactis and Faecalibacterium prausnitzii).Therefore,dietary intake of BVC can promote intestinal tract development and optimize gut microflora,by which the survival and growth of large-scale loach may be improved.

关键词： bamboo vinegar Bamboo charcoal Paramisgurnus dabryanus growth performance intestinal morphology gut microflora

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The Effect of Bamboo charcoal Application on Soil Nutrients and Heavy Metals in Rice

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Phyton-International Journal of Experimental Botany 2022年第6期91卷 1245-1256页

作者： Guangyue Cai Juanli Tu Songhao Li Yifei Ruan Qifeng Wu Jiasen Wu State Key Laboratory of Subtropical Silviculture Zhejiang A&F UniversityHangzhou311300China Jiaxing Vocational&Technical College Jiaxing314036China Agriculture and Forestry Technology Extension Center Hangzhou311300China

Soil heavy metal pollution is becoming more and more serious.Biomass charcoal application can play an important role in alleviating the toxicity of heavy metals in soils.Compared with other biochar,Bamboo charcoal has more unique properties and may have a unique effect on heavy metal pollution.Zhejiang Province of Southeastern China is rich in bamboo resources.However,few studies related to Bamboo charcoal application for heavy metal remediation in farmland were reported.In this study,four treatments with different amounts of Bamboo charcoal application were set up through a field experiment,namely BC0(no Bamboo charcoal application),BC1(2500 kg⋅ha^(−1)),BC2(5000 kg⋅ha^(−1)),and BC3(10000 kg⋅ha^(−1)),and each treatment was replicated three times.The results showed that(1)The application of Bamboo charcoal significantly increased the soil pH and organic matter content.Compared with BC0,the pH and organic content of BC3 increased by 7.4%and 17.4%(P0.05).(3)With the increase of Bamboo charcoal application,the Cd content in rice gradually decreased,the BC3 treatment significantly decreased by 39.0%(P0.05),compared with BC0.(4)Soil pH,organic matter and Cd in rice seeds were significantly negatively correlated(PBamboo charcoal does not reduce heavy metal content in rice by simply declining the heavy metal content with HCl-extractable state.The mechanism of action is relatively complicated,and further study is needed.

关键词： Bamboo charcoal rice heavy metal pollution paddy field HCl-extractable heavy metal

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Bamboo charcoal fused with polyurethane foam for efficiently removing organic solvents from wastewater:experimental and simulation

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Biochar 2022年第1期4卷 720-735页

作者： Zeyu Wang Liyong Hu Min Zhao Luyao Dai Dzmitry Hrynsphan Savitskaya Tatsiana Jun Chen Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province Interdisciplinary Research AcademyZhejiang Shuren University310015 HangzhouPeople’s Republic of China College of Environment Zhejiang University of TechnologyHangzhou 310032People’s Republic of China Research Institute of Physical and Chemical Problems Belarusian State University220030 MinskBelarus

The development of a multifunctional oil adsorbing material which could effectively and quickly separate oily wastewater is one of the focuses in water environment restoration.In this study,Bamboo charcoal(BC)was used as an improver to modify polyurethane(PU)foam.The results of scanning electron microscope(SEM)and Fourier-transform infrared spectroscopy(FTIR)revealed that the addition of BC could effectively improve the mechanical properties of PU.The adsorption data exhibited that the BC-loaded PU(BC/PU)foam composites effectively removed seven organic solvents(OSs,including octane,petroleum ether,soybean oil,chlorobenzene,1,2-dichloroethane,n-hexane,cyclohexane),and the maximum adsorption capacity of BC/PU was 23.6 g g^(−1)when BC content was 5%.The order of pseudo-second-order kinetic constants and maximum adsorption capacity of seven OSs was octane

关键词： Bamboo charcoal Polyurethane Adsorption Organic solvent Reusability

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Enhancement of Photocatalytic and Antibacterial Activities of ZnO：Ag Nanopowders Through the Addition of Bamboo charcoal： An Efficient Natural Adsorbent

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Acta Metallurgica Sinica(English Letters) 2017年第12期30卷 1249-1256页

作者： K. Nithiyadevi K. Ravichandran PG Research and Department of Physics AVVM Sri Pushpam College (Autonomous) Poondi Thanjavur Tamil Nadu 613 503 India Department of Physics Bharathidasan University Constituent College (Women) Orathanadu Tamil Nadu 614 625 India

This research article explains the removal of methylene blue （MB） and malachite green （MG） from aqueous solution using adsorption/photodegradation activity of ZnO：Ag/Bamboo charcoal （BC） nanocomposite. In addition, the antibacterial studies of the prepared samples were tested against Staphylococcus aureus （S. aureus） Gram-positive and Escherichia coli （E. coli） Gram-negative bacteria by the well diffusion method. The ZnO：Ag/BC nanocomposite exhibits superior photocatalytic activity compared with ZnO：Ag. Remarkable degradation efficiencies of 93.95% （MB） and 95.75% （MG） were recorded for ZnO：Ag/BC nanocomposite after 45 min. The degradation process follows a pseudo-first-order kinetics. The rate constant of ZnO：Ag/BC nanocomposite is two times greater than that of pristine ZnO nanopowder for the degradation of MB dye, while for MG dye degradation, it is three times. It is found that the ZnO：Ag/BC nanocomposite shows a higher rate of dye removal due to excellent adsorbing properties of Bamboo charcoal （BC）. The ZnO：Ag/BC nanocomposite showed better antibacterial properties compared to ZnO：Ag. In this study, the samples were prepared using a simple and low-cost soft chemical route and they were characterized by optical, structural, surface morphological, antibacterial and photocatalytic properties. These characterization studies substantiate the discussions on the photocatalytic and antibacterial activities of the synthesized samples.

关键词： Bamboo charcoal Adsorbent ZnO Photocatalysis Antibacterial

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Pb(Ⅱ) removal from water using Fe-coated Bamboo charcoal with the assistance of microwaves

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Journal of Environmental Sciences 2013年第5期25卷 1044-1053页

作者： Zengsheng Zhang Xuejiang Wang Yin Wang Siqing Xia Ling Chen Yalei Zhang Jianfu Zhao State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and EngineeringTongji University

Bamboo charcoal（BC） was used as starting material to prepare iron-modified Bamboo charcoal（Fe-MBC） by its impregnation in FeCl 3 and HNO 3 solutions simultaneously,followed by microwave heating.The material can be used as an adsorbent for Pb（Ⅱ） contaminants removal in water.The composites were prepared with Fe molar concentration of 0.5,1.0 and 2.0 mol/L and characterized by means of N 2 adsorption-desorption isotherms,X-ray diffraction spectroscopy（XRD）,scanning electron microscopy coupled with energy dispersive X-ray spectrometry（SEM-EDS）,Fourier transform infrared（FT-IR） and point of zero charge（pH pzc） measurements.Nitrogen adsorption analyses showed that the BET specific surface area and total pore volume increased with iron impregnation.The adsorbent with Fe molar concentration of 2 mol/L（2Fe-MBC） exhibited the highest surface area and produced the best pore structure.The Pb（Ⅱ） adsorption process of 2Fe-MBC and BC were evaluated in batch experiments and 2Fe-MBC showed an excellent adsorption capability for removal Pb（Ⅱ）.The adsorption of Pb（Ⅱ） strongly depended on solution pH,with maximum values at pH 5.0.The ionic strength had a significant effect on the adsorption at pH 〈 6.0.The adsorption isotherms followed the Langmuir isotherm model well,and the maximum adsorption capacity for Pb（Ⅱ） was 200.38 mg/g for 2Fe-MBC.The adsorption processes were well fitted by a pseudo second-order kinetic model.Thermodynamic parameters showed that the adsorption of Pb（Ⅱ） onto Fe-MBC was feasible,spontaneous,and exothermic under the studied conditions,and the ion exchange mechanism played an significant role.These results have important implications for the design of low-cost and effective adsorbents in the removal of Pb（Ⅱ） from wastewater.

关键词： adsorption Bamboo charcoal microwave assistance kinetics adsorption isotherms

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Properties of Bamboo charcoal and Cement-based Composite Materials and Their Microstructure

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Journal of Wuhan University of Technology(Materials Science) 2017年第6期32卷 1374-1378页

作者：王中平 LI Haoxin 蒋正武 CHEN Qing Key Laboratory of Advanced Civil Engineering Materials Ministry of Education Tongji University Shanghai 200092 China

The objective of this work was to study the properties of Bamboo charcoal and cement-based composite materials and their microstructure. The pastes with various Bamboo charcoals were prepared and the relative properties such as setting times and strength were tested and the microstructures and pore characteristics of pastes with various bamboos were also studied. The experimental results indicated that Bamboo charcoal affects the setting times of cement paste, but the introduction of water reducer relieves this condition. Bamboo charcoal also poses an impact on the hardened paste strength. The prominent strength decrease is found when more and larger size Bamboo charcoal is mixed into the cement paste. Bamboo charcoal alters the paste microstructure and increases the porosity and pore volume, but it increases the pores with the diameter of less than 50 μm. The pastes with various Bamboo charcoals are given with the good functions such as adjusting humidity and adsorption.

关键词： Bamboo charcoal cement-based materials setting time compressive strength porestructure

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Removal of microcystin-LR from drinking water using a bamboo-based charcoal adsorbent modified with chitosan

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Journal of Environmental Sciences 2011年第12期23卷 1983-1988页

作者： Hangjun Zhang Guoying Zhu Xiuying Jia Ying Ding Mi Zhang Qing Gao Ciming Hu Shuying Xu College of Biology and Environmental Sciences Hangzhou Normal University Hangzhou 310036 China Institute of Industry EP＆D Hangzhou 310005 China College of Environmental and Resource Sciences Zhejiang University Hangzhou 310058 China

A new kind of low-cost syntactic adsorbent from Bamboo charcoal and chitosan was developed for the removal of microcystin-LR from drinking water. Removal effciency was higher for the syntactic adsorbent when the amount of Bamboo charcoal was increased. The optimum dose ratio of Bamboo charcoal to chitosan was 6：4, and the optimum amount was 15 mg/L; equilibrium time was 6 hr. The adsorption isotherm was non-linear and could be simulated by the Freundlich model （R2 = 0.9337）. Adsorption efficiency was strongly afflected by pH and natural organic matter （NOM）. Removal efficiency was 16% higher at pH 3 than at pH 9. Efficiency rate was reduced by 15% with 25 mg/L NOM （UV254 = 0.089 cm-1） in drinking water. This study demonstrated that the Bamboo charcoal modified with chitosan can effectively remove microcystin-LR from drinking water.

关键词： adsorption Bamboo charcoal chitosan microcystin-LR

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Analysis and characterization of microstructures of a TiO_2/Bamboo charcoal composite and modified poplar veneer

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Forestry Studies in China 2012年第3期14卷 240-245页

作者： CHENG Da-li JIANG Shen-xue ZHANG Qi-sheng bamboo Engineering Research Center College of Wood Science and TechnologyNanjing Forestry UniversityNanjing 210037P.R.China

A type of TiO/Bamboo charcoal composite made by a dip-dry method was loaded onto wood veneer with a vacuum- pressure method in order to prepare modified poplar veneer. The pore structure parameters and surface morphology of the TiO2/ Bamboo charcoal composite were determined and analyzed by means of a porosimetry analyzer and SEM. The results show that the surface morphology of the composite does not change after being loaded with nano TiO2. However, its specific surface area （359.814 m^2·g^-1）, pore volume （0.317 cm^3.g^-1） and average pore diameter （3.526 nm） increased; particularly the cumulative volume of pores was increased by 65.83%. In addition, the distribution range of the pores was wider than that of the Bamboo charcoal. Combining the SEM of unmodified and modified poplar veneer, the results of X-ray photoelectron spectroscopy revealed that actually some TiOz compounds, i.e., 4.08%, are imbedded in the modified poplar veneer.

关键词： Bamboo charcoal titanium dioxide TiO2/Bamboo charcoal composite SEM XPS

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Study on the adsorption of lanthanum(Ⅲ) from aqueous solution by Bamboo charcoal

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Journal of Rare Earths 2010年第S1期28卷 125-131页

作者：陈青 Department of Applied Chemistry Zhejiang Gongshang University

The adsorption behaviors of La(Ⅲ) ion on Bamboo charcoal were investigated with various chemical methods and IR spectrometry. Parameters studied include the effects of pH,average particle size,initial ion concentration,contact time and temperature by batch method. The results showed that Bamboo charcoal could remove La(Ⅲ) ions effectively from aqueous solution. The loading of La(Ⅲ) ions was strongly dependent on pH of the medium and the optimal adsorption condition was in HNO3-TEA medium with pH value of 7.20. In the batch system,the modified Bamboo charcoal exhibited the highest La(Ⅲ) ion uptake as 120 mg/g at 298 K,at an initial pH value of 7.20. The adsorption kinetics were tested with Lagergren-first-order model and pseudo-second-order model. The adsorption data were conformed to the Langmuir and Freundlich isotherms,and the correlation coefficients had been evaluated. Thermodynamic parameters such as free energy(ΔG) ,which were all negative,indicated that the adsorption of La(Ⅲ) ion onto Bamboo charcoal was spontaneous and the positive value of enthalpy(ΔH) showed that the adsorption was endothermic in nature. Thomas model was applied to experimental column data to determine the characteristic parameters of column useful for process design. The characterization of both before and after adsorption of La(Ⅲ) ion on Bamboo charcoal was undertaken using IR spectroscopic technique. The results revealed that Bamboo charcoal was a good choice as a biosorbent for the recovery of lanthanum from aqueous solution.

关键词： Bamboo charcoal La(Ⅲ) adsorption kinetics thermodynamic rare earths

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