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| 1 | Interactively interfacial reaction of iron-reducing bacterium and goethite for reductive dechlorination of chlorinated organic compounds显示文摘The interactively interfacial reactions between the iron-reducing bacterium (Shewanella decolorationis, S12) and iron oxide (α-FeOOH) were investigated to determine reductive dechlorination transformation of chlorinated organic compounds (chloroform and pentachlorophenol). The results showed that the interactive system of S12+ α-FeOOH exhibited relatively high dechlorination rate. By comparison, the S12 biotic system alone had no obvious dechlorination, and the α-FeOOH abiotic system showed low dechlorination rate. The enhanced dechlorination of chloroform and pentachlorophenol in the interactive system of S12+α-FeOOH was derived from the promoted generation of adsorbed Fe(Ⅱ) by S12. A decrease in redox potential of the Fe(Ⅲ)/Fe(Ⅱ) couple in the interactive reaction system was determined by cyclic voltammetry. Our results will give new insight into interactively interfacial reaction between iron-reducing bacterium and iron oxides for degradation of chlorinated organic compounds under anaerobic condition. | LI XiaoMin LI YongTao LI FangBai ZHOU ShunGui FENG ChunHua LIU TongXu | 2009 | Chinese Science Bulletin2009，54，16： | 11 |
| 2 | A study of electron-shuttle mechanism in Klebsiella pneumoniae based-microbial fuel cells显示文摘In microbial fuel cell (MFC), the rate of electron transfer to anode electrode is a key intrinsic limiting factor on the power output of MFCs. Using Klebsiella pneumoniae (K. pneumoniae) strain L17 as biocatalyst, we studied the mechanism of electron shuttle via self-producing mediator in a cubic air-chamber MFC. To eliminate the influence of biofilm mechanism, the anode electrode was coated with microfiltration membrane (0.22 μm). Data showed that the microfiltration membrane coated and uncoated MFCs achieved the maximum voltage outputs of 316.2 and 426.2 mV after 270 and 120 h, respectively. When the medium was replaced in MFCs that had the highest power generation, the power output dropped by 62.1% and 8.8%, and required 120 and 48 h to resume the original level in the coated and uncoated MFCs, respectively. The results suggested an electron-shuttle mechanism rather than biofilm mechanism was responsible for electricity generation in the membrane coated MFC. Cyclic voltammetric measurements demonstrated the presence of an electrochemical active compound produced by K. pneumoniae strain L17, which was identified to be 2,6-di-tert-butyl-p-benzoquinon (2,6-DTBBQ) by GC-MS. 2,6-DTBBQ, as a recyclable electron shuttle, could transfer electrons between K. pneumoniae L17 and the anode electrode. | DENG LiFang LI FangBai ZHOU ShunGui HUANG DeYin NI JinRen | 2010 | Chinese Science Bulletin2010，55，1： | 9 |
| 3 | A highly porous animal bone-derived char with a superiority of promoting nZVI for Cr(Ⅵ)sequestration in agricultural soils显示文摘Paddy soil and irrigation water are commonly contaminated with hexavalent chromium[Cr(Ⅵ)]near urban industrial areas,thereby threatening the safety of agricultural products and human health.In this study,we develop a porous and high specific area bone char(BC)to support nanoscale zero-valent iron(n ZVI)and apply it to remediate Cr(Ⅵ)pollution in water and paddy soil under anaerobic conditions.The batch experiments reveal that BC/n ZVI exhibits a higher removal capacity of 516.7 mg/(g·n ZVI)for Cr(Ⅵ)than n ZVI when normalized to the actual n ZVI content,which is 2.8 times that of n ZVI;moreover,the highest n ZVI utilization is the n ZVI loading of 15%(BC/n ZVI15).The Cr(Ⅵ)removal efficiency of BC/n ZVI15 decreases with increasing p H(4–10).Coexisting ions(phosphate and carbonate)and humic acid can inhibit the removal of Cr(Ⅵ)with BC/n ZVI15.Additionally,BC exhibits a strong advantage in promoting Cr(Ⅵ)removal by n ZVI compared to the widely used biochar and activated carbon.Our results demonstrate that reduction and coprecipitation are the dominant Cr(Ⅵ)removal mechanisms.Furthermore,BC/n ZVI15 shows a significantly higher reduction and removal efficiency as well as a strong anti-interference ability for Cr(Ⅵ)in paddy soil,as compared to n ZVI.These findings provide a new effective material for remediating Cr(Ⅵ)pollution from water and soil. | Kai Liu Fangbai Li Qingwen Tian Chengrong Nie Yibing Ma Zhenlong Zhu Liping Fang Yuanying Huang Siwen Liu | 2021 | Journal of Environmental Sciences2021，33，6： | 7 |
| 4 | Multiple effects of nitrate amendment on the transport, transformation and bioavailability of antimony in a paddy soil-rice plant system显示文摘Nitrate(NO3^(-))is known to be actively involved in the processes of mineralization and heavy metal transformation;however,it is unclear whether and how it affects the bioavailability of antimony(Sb)in paddy soils and subsequent Sb accumulation in rice.Here,the effects of NO3^(-)on Sb transformation in soil-rice system were investigated with pot experiments over the entire growth period.Results demonstrated that NO3^(-)reduced Sb accumulation in brown rice by 15.6%compared to that in the control.After amendment with NO3^(-),the Sb content in rice plants increased initially and then gradually decreased(in roots by 46.1%).During the first 15 days,the soil p H increased,the oxidation of Sb(Ⅲ)and sulfides was promoted,but the reduction of iron oxide minerals was inhibited,resulting in the release of adsorbed and organic-bound Sb from soil.The microbial arsenite-oxidizing marker gene aox B played an important role in Sb(Ⅲ)oxidation.From days 15 to 45,after NO3^(-)was partially consumed,the soil p H decreased,and the reductive dissolution of Fe(Ⅲ)-bearing minerals was enhanced;consequently,iron oxide-bound Sb was transformed into adsorbed and dissolved Sb species.After day 45,NO3^(-)was completely reduced,Sb(V)was evidently reduced to Sb(Ⅲ),and green rust was generated gradually.Thus,the available Sb decreased due to its enhanced affinity for iron oxides.Moreover,NO3^(-)inhibited the reductive dissolution of iron minerals,which ultimately caused low Sb availability.Therefore,NO3^(-)can chemically and biologically reduce the Sb availability in paddy soils and alleviate Sb accumulation inrice.This study provides a potential strategy for decreasing Sb accumulation in rice in the Sb-contaminated sites. | Xiaofeng Zhang Tongxu Liu Fangbai Li Xiaomin Li Yanhong Du Huanyun Yu Xiangqin Wang Chuanpin Liu MiFeng Bing Liao | 2021 | Journal of Environmental Sciences2021，33，2： | 6 |
| 5 | Fractionation characteristics of rare earth elements(REEs) linked with secondary Fe, Mn, and Al minerals in soils显示文摘Soil secondary minerals are important scavengers of rare earth elements(REEs) in soils and thus affect geochemical behavior and occurrence of REEs. The fractionation of REEs is a common geochemical phenomenon in soils but has received little attention, especially fractionation induced by secondary minerals. In this study, REEs(La to Lu and Y) associated with soil-abundant secondary minerals Fe-, Al-, and Mn-oxides in 196 soil samples were investigated to explore the fractionation and anomalies of REEs related to the minerals. The results show right-inclined chondrite-normalized REE patterns for La–Lu in soils subjected to total soil digestion and partial soil extraction. Light REEs(LREEs) enrichment features were negatively correlated with a Eu anomaly and positively correlated with a Ce anomaly. The fractionation between LREEs and heavy REEs(HREEs) was attributed to the high adsorption affinity of LREEs to secondary minerals and the preferred activation/leaching of HREEs.The substantial fractions of REEs in soils extracted byoxalate and Dithionite-Citrate-Bicarbonate buffer solutions were labile(10 %–30 %), which were similar to the mass fraction of Fe(10 %–20 %). Furthermore, Eu was found to be more mobile than the other REEs in the soils, whereas Ce was less mobile. These results add to our understanding of the distribution and geochemical behavior of REEs in soils, and also help to deduce the conditions of soil formation from REE fractionation. | Chunying Chang Fangbai Li Chengshuai Liu Jianfeng Gao Hui Tong Manjia Chen | 2016 | Acta Geochimica2016，35，4： | 5 |
| 6 | The applicability of biochar and zero-valent iron for the mitigation of arsenic and cadmium contamination in an alkaline paddy soil显示文摘In paddy fields, the opposing transformation of arsenic (As) and cadmium (Cd) poses many challenges for their simultaneous remediation.In our previous study,we reported that combined biochar and zero-valent iron(ZVI)amendment had great potential for the simultaneous alleviation of As and Cd bioavailability in contaminated acid paddy soil.In this study,an As-and Cd-contaminated alkaline paddy soil was further studied,and the same ZVI-biochar mixtures amendments were applied to evaluate the impact of the mixtures on As and Cd transformation and translocation in the soil-rice system by performing pot experiments with rice.In line with our previous study,the ZVI-biochar composites significantly reduced As and Cd accumulation in different rice tissues,leading to a 42%and 47%decrease in rice grain As and Cd levels,respectively,compared with the control values.The ZVI-biochar mixtures exhibited synergistic effects of biochar and ZVI by enhancing the transformation of bioavailable As and Cd fractions into less bioavailable fractions,and by increasing iron plaque formation to reduce As and Cd bioavailability.Although the bioaccumulation and translocation factors of As and Cd in alkaline paddy soil were generally lower than those in acid paddy soil,particularly in the presence of the ZVI-biochar mixtures,the grain As and Cd levels did not achieve the desired food safety standard levels,probably related to the high soil As content and the small changes in soil pH.Nevertheless,for treating lightly and moderately contaminated paddy soils,ZVI-biochar mixtures can still be a good choice in the future. | Jiangtao Qiao Huanyun Yu Xiangqin Wang Fangbai Li Qi Wang Yuzhen Yuan Chuanping Liu | 2019 | Biochar2019，1，2： | 5 |
| 7 | Microaerobic Fe (Ⅱ) oxidation coupled to carbon assimilation processes driven by microbes from paddy soil显示文摘Microaerobic Fe(Ⅱ) oxidation process at neutral pH, driven by microbes can couple to carbon assimilation process in iron-rich freshwater and marine environments;however, few studies report such coupled processes in paddy soil of the critical zone in South China. In this study, rhizosphere soil from flooded paddy field was used as the inoculum to enrich the microaerophilic Fe(Ⅱ)-oxidizing bacteria(FeOB) in gradient tubes with different Fe(Ⅱ) substrates(FeS and FeCO_3) and ^(13)C-biocarbonate as inorganic carbon source to track the carbon assimilation. Kinetics of Fe(Ⅱ) oxidation and biomineralization were analyzed, and the composition and abundance of the microbial community were profiled using 16 S rRNA gene-based highthroughput sequencing. Results showed that microbial cell bands were formed 0.5–1.0 cm below the medium surface in the inoculated tubes with Fe(Ⅱ) substances, while no cell band was found in the non-inocula controls. The protein concentrations in the cell bands reached the highest values at 18.7–22.9 mg m^L(-1) on 6 d in the inocula tubes with Fe(Ⅱ) substrates. A plateau of the yields of ^(13)C-biocarbonate incorporation was observed during 6–15 d at 0.44–0.54% and 1.61–1.98% in the inocula tubes with FeS and FeCO_3, respectively. The inocula tube with FeS showed a higher Fe(Ⅱ) oxidation rate of 0.156 mmol L^(-1) d^(-1) than that with FeCO_3(0.106 mmol L^(-1) d^(-1)). Analyses of X-ray diffraction and scanning electron microscopy with energy-dispersive X-ray spectroscopy revealed that amorphous iron oxide was formed on the surface of rod-shaped bacteria after Fe(Ⅱ) oxidation.Relative to the agar only control, the abundances of Clostridium and Pseudogulbenkiania increased in the inocula tube with FeS,while those of Vogesella, Magnetospirillum, Solitalea, and Oxalicibacterium increased in the inocula tube with FeCO_3, all of which might be the potential microaerophilic FeOB in paddy soil. The findings in this study suggest that microbes that couple microaerobic Fe(Ⅱ) oxidation to carbon assimilation existed in the paddy soil, which provides an insight into the iron-carbon coupling transformation under microaerobic conditions in the critical zone of the iron-rich red soil. | Xiaomin LI Shan MOU Yating CHEN Tongxu LIU Jun DONG Fangbai LI | 2019 | Science China Earth Sciences2019，62，11： | 3 |
| 8 | Different effects of foliar application of silica sol on arsenic translocation in rice under low and high arsenite stress显示文摘Foliar application of Si can generally reduce As translocation from roots to shoots in rice;however, it does not always work, particularly under high As stress. Here, the effects of foliar application of nanoscale silica sol on As accumulation in rice were investigated under low(2 μmol/L) and high(8 μmol/L) arsenite stress. The results revealed that foliar Si application significantly decreased the As concentration in shoots under low arsenite stress, but showed different effects under high arsenite stress after 7 days of incubation. The reduction in root-to-shoot As translocation under the 2 As + Si treatment was related to the down-regulation of Os Lsi1 and Os Lsi2 expression and up-regulation of Os ABCC1 expression in roots. In the 8 As + Si treatment, the expressions of Os Lsi1, Os Lsi2, and Os ABCC1 were significantly promoted, which resulted in substantially higher As accumulation in both the roots and shoots. In the roots, As predominantly accumulated in the symplasts(90.6%–98.3%), in which the majority of As was sequestered in vacuoles(79.0%–94.0%) under both levels of arsenite stress. Compared with that of the 8 As treatment, the 8 As + Si treatment significantly increased the As concentration in cell walls, but showed no difference in the vacuolar As concentration, which remained constant at approximately 69.1–71.7 mg/kg during days 4–7. It appeared that the capacity of root cells to sequester As in the vacuoles had a threshold, and the excess As tended to accumulate in the cell walls and transfer to the shoots via apoplasts under high arsenite stress. This study provides a better understanding of the different effects of foliar Si application on As accumulation in rice from the view of arseniterelated gene expression and As subcellular distribution in roots. | Dandan Pan Chuanping Liu Jicai Yi Xiaomin Li Fangbai Li | 2021 | Journal of Environmental Sciences2021，33，7： | 3 |
| 9 | A critical review of biochar-based nitrogen fertilizers and their effects on crop production and the environment显示文摘Globally,nitrogen(N)fertilizer demand is expected to reach 112 million tonnes to support food production for about 8 billion people.However,more than half of the N fertilizer is lost to the environment with impacts on air,water and soil quality,and biodiversity.Importantly,N loss to the environment contributes to greenhouse gas emissions and climate change.Nevertheless,where N fertilizer application is limited,severe depletion of soil fertility has become a major constraint to sustainable agriculture.To address the issues of low fertilizer N use efficiency(NUE),biochar-based N fertilizers(BBNFs)have been developed to reduce off-site loss and maximize crop N uptake.These products are generally made through physical mixing of biochar and N fertilizer or via coating chemical N fertilizers such as prilled urea with biochar.This review aims to describe the manufacturing processes of BBNFs,and to critically assess the effects of the products on soil properties,crop yield and N loss pathways. | Yurong Gao Zheng Fang Lukas Van Zwieten Nanthi Bolan Da Dong Bert F.Quin Jun Meng Fangbai Li Fengchang Wu Hailong Wang Wenfu Chen | 2022 | Biochar2022，4，1： | 2 |
| 10 | Heavy metal contamination in soils and vegetables near an e-waste processing site, south China显示文摘 | Chunling Luo Chuanping Liu Yan Wang Xiang Liu Fangbai Li Gan Zhang Xiangdong Li | 2010 | Journal of Hazardous Materials2010，，1： | 2 |
| 11 | Fertilization regimes affect the soil biological characteristics of a sudangrass and ryegrass rotation system显示文摘The sudangrass (Sorghum sudanense) and ryegrass (Lolium multiflorum L.) rotation is an intensive and new cropping system in Central China.Nutrient management practices in this rotation system may influence soil fertility,the important aspects of which are soil biological properties and quality.As sensitive soil biological properties and quality indicators,soil microbial community activity,microbial biomass,enzyme activities,soil organic matter (SOM) and total N resulting from different fertilization regimes in this rotation system were studied through a four-year field experiment from April 2005 to May 2009.Treatments included control (CK),fertilizer phosphorus and potassium (PK),fertilizer nitrogen and potassium (NK),fertilizer nitrogen and phosphorus (NP) and a fertilizer nitrogen,phosphorus and potassium combination (NPK).Soil microbial community activities in the NK,NP and NPK treatments were significantly lower than those in the CK and PK treatments after the sudangrass and ryegrass trial.The highest microbial biomass C,microbial biomass N,SOM,total N,sucrase and urease activities were found in the NPK treatment,and these soil quality indicators were significantly higher in the NK,NP and NPK treatments than in the PK and CK treatments.Soil microbial biomass and enzyme activities were positively associated with SOM in the sudangrass and ryegrass rotation system,indicating that fertilization regimes,especially N application,reduced microbial community activity in the soil.Proper fertilization regimes will increase microbial biomass,enzyme activity and SOM and improve soil fertility. | LI WenXi LU JianWei LI FangBai WANG Yan LU JunMing LI XiaoKun | 2011 | Science China(Life Sciences)2011，54，6： | 2 |
| 12 | Ni-Mg-Mn-Fe-O catalyst derived from layered double hydroxide for hydrogen production by auto-thermal reforming of ethanol显示文摘 | Zhang Fangbai Li Mao Yang Lu | 2014 | Catalysis Communications2014，43，： | 1 |
| 13 | Occurrence of phthalate esters in water and sediment of urban lakes in a subtropical city, Guangzhou, South China显示文摘 | Feng Zeng Kunyan Cui Zhiyong Xie Min Liu Yangjie Li Yujun Lin Zunxiang Zeng Fangbai Li | 2007 | Environment International2007，，3： | 1 |
| 14 | The oxidative degradation of 2-mercaptobenzothiazole at the interface of β-MnO2 and water 显示文摘 | Fangbai Li Chenshuai Liu Chunhua Liang | 2008 | Journal of Hazardous Materials2008，154，13： | 1 |
| 15 | The enhancement of adsorption and photocatalytic activity of rare earth ions doped TiO2 for the degradation of Or- ange 显示文摘 | LIANG Cunhua L1 Fangbai LIU Chengshuai | 2008 | Dyes and Pigments2008，76，2： | 1 |
| 16 | Bio-electro-Fenton process driven by microbial fuel cell for wastewater treatment显示文摘 | Feng Chunhua Li Fangbai Mai Hongjian | 2010 | Environmental Science & Technology2010，44，5： | 1 |
| 17 | Occurrence of phthalate esters in water and sediment of urban lakes in a subtropical city, Guangzhou, South China显示文摘 | Feng Zeng Kunyan Cui Zhiyong Xie Min Liu Yangjie Li Yujun Lin Zunxiang Zeng Fangbai Li | 2007 | Environment International2007，，3： | 1 |
| 18 | Development of a photocatalytic wet scrubbing process for gaseous odor treatment 显示文摘 | L1U Tongxu LI Xiangzhong LI Fangbai | 2010 | Industrial & Engineering Chemistry Research2010，49，8： | 1 |
| 19 | The enhancement of absorption and photocatalytic activity of rareearth ions doped Ti()e for the degradation of ()range I显示文摘 | LIANG Chunhua LI Fangbai LIU Chengshuai | 2008 | Dyes and Pigments2008，76，2： | 1 |
| 20 | Enhancement of the reductive transformation of pentachlorophenol by polycarboxylic acids at the iron oxide–water interface显示文摘 | Fangbai Li Xugang Wang Yongtao Li Chengshuai Liu Fang Zeng Lijia Zhang Mingde Hao Huada Ruan | 2008 | Journal of Colloid And Interface Science2008，，2： | 1 |
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