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| 1 | Biosorption mechanisms involved in immobilization of soil Pb by Bacillus subtilis DBM in a multi-metal-contaminated soil显示文摘Mechanisms of soil Pb immobilization by Bacillus subtilis DBM, a bacterial strain isolated from a heavy-metal-contaminated soil, were investigated. Adsorption and desorption experiments with living bacterial cells as well as dead cells revealed that both extracellular adsorption and intracellular accumulation were involved in the Pb2+removal from the liquid phase. Of the sequestered Pb(II), 8.5% was held by physical entrapment within the cell wall, 43.3% was held by ion-exchange, 9.7% was complexed with cell surface functional groups or precipitated on the cell surface, and 38.5% was intracellularly accumulated.Complexation of Pb2+with carboxyl, hydroxyl, carbonyl, amido, and phosphate groups was demonstrated by Fourier transform infrared spectroscopic analysis. Precipitates of Pb5(PO4)3OH, Pb5(PO4)3Cl and Pb10(PO4)6(OH)2that formed on the cell surface during the biosorption process were identified by X-ray diffraction analysis. Transmission electron microscopy–energy dispersive spectroscopic analysis confirmed the presence of the Pb(II)precipitates and that Pb(II) could be sequestered both extracellularly and intracellularly.Incubation with B. subtilis DBM significantly decreased the amount of the weak-acid-soluble Pb fraction in a heavy-metal-contaminated soil, resulting in a reduction in Pb bioavailability, but increased the amount of its organic-matter-bound fraction by 71%. The ability of B.subtilis DBM to reduce the bioavailability of soil Pb makes it potentially useful for bacteria-assisted phytostabilization of multi-heavy-metal-contaminated soil. | Jun Bai Xiuhong Yang Ruiying Du Yanmei Chen Shizhong Wang Rongliang Qiu | 2014 | Journal of Environmental Sciences2014，26，10： | 22 |
| 2 | Heavy metal (Pb,Zn) uptake and chemical changes in rhizosphere soils of four wetland plants with different radial oxygen loss显示文摘Lead and Zn uptake and chemical changes in rhizosphere soils of four emergent-rooted wetland plants;Aneilema bracteatum,Cyperus alternifolius,Ludwigia hyssopifolia and Veronica serpyllifolia were investigated by two experiments:(1) rhizobag filled with 'clean' or metal-contaminated soil for analysis of Pb and Zn in plants and rhizosphere soils;and (2) applied deoxygenated solution for analyzing their rates of radial oxygen loss (ROL).The results showed that the wetland plants with different ROL rates had significant effects on the mobility and chemical forms of Pb and Zn in rhizosphere under flooded conditions.These effects were varied with different metal elements and metal concentrations in the soils.Lead mobility in rhizosphere of the four plants both in the 'clean' and contaminated soils was decreased,while Zn mobility was increased in the rhizosphere of the 'clean' soil,but decreased in the contaminated soil.Among the four plants,V.serpyllifolia,with the highest ROL,formed the highest degree of Fe plaque on the root surface,immobilized more Zn in Fe plaque,and has the highest effects on the changes of Zn form (EXC-Zn) in rhizosphere under both 'clean' and contaminated soil conditions.These results suggested that ROL of wetland plants could play an important role in Fe plaque formation and mobility and chemical changes of metals in rhizosphere soil under flood conditions. | Junxing Yang Zuoluo Ma Zhihong Ye Xueyan Guo Rongliang Qiu | 2010 | Journal of Environmental Sciences2010，22，5： | 11 |
| 3 | The effect of interaction between Bacillus subtilis DBM and soil minerals on Cu(Ⅱ) and Pb(Ⅱ) adsorption显示文摘The effects of interaction between Bacillus subtilis DBM and soil minerals on Cu(Ⅱ)and Pb(Ⅱ)adsorption were investigated.After combination with DBM,the Cu(Ⅱ)and Pb(Ⅱ)adsorption capacities of kaolinite and goethite improved compared with the application of the minerals independently.The modeling results of potentiometric titration data proved that the site concentrations of kaolinite and goethite increased by 80%and 30%,respectively after combination with DBM.However,the involvement of functional groups in the DBM/mineral combinations resulted in lower concentrations of observed sites than the theoretical values and led to the enhancement of desorption rates by NH_4NO_3 and EDTA-Na_2.The DBM-mineral complexes might also help to prevent heavy metals from entering DBM cells to improve the survivability of DBM in heavy metal-contaminated environments.During the combination process,the extracellular proteins of DBM provided more binding sites for the minerals to absorb Cu(Ⅱ)and Pb(Ⅱ).In particular,an especially stable complexation site was formed between goethite and phosphodiester bonds from EPS to enhance the Pb(Ⅱ)adsorption capacity.So,we can conclude that the DBM–mineral complexes could improve the Cu(Ⅱ)and Pb(Ⅱ)adsorption capacities of minerals and protect DBM in heavy metal-contaminated environments. | Jun Bai Yuanqing Chao Yanmei Chen Shizhong Wang Rongliang Qiu | 2019 | Journal of Environmental Sciences2019，31，4： | 4 |
| 4 | Acid deposition critical loads modeling for the simulation of sulfur exceedance and reduction in Guangdong, China显示文摘The current acid deposition critical loads in Guangdong, China were calculated using the PROFILE model with a 3 km × 3 km resolution. Calculations were carried out for critical loads of potential acidity, actual acidity, sulfur and nitrogen, with values in extents of 0–3.5, 0–14.0, 0–26.0 and 0–3.5 kmol/(hm2·year), respectively. These values were comparable to previously reported results and reflected the influences of vegetation and soil characteristics on the soil acid buffering capacity. Simulations of SO2 emission and sulfur deposition in this study showed that sulfur deposition core areas mirrored SO2 emission centers. The prediction of sulfur deposition after 20% and 40% reduction of SO2 emission suggested that the reduction of area sources contributed greatly to the decrease of sulfur deposition. Thus, abatement of area source emissions could be the primary way to mitigate sulfur deposition in Guangdong to meet both the provincial and national regulations of air pollution control. | QIU Rongliang WANG Shizhong QIU Hao WANG Xuemei LIAO Jin ZHANG Zhentian | 2009 | Journal of Environmental Sciences2009，21，8： | 3 |
| 5 | Upcycling biomass waste into Fe single atom catalysts for pollutant control显示文摘Contaminants of heavy metals and antibiotics, which are frequently detected in water, soil and food chains with increasing prevalence in our current society, can cause potential harm to human health and disrupt human ecosystem irreversibly. Herein, we have successfully utilized biomass waste ferns contaminated by iron mines, to fabricate a first-of-its-kind high-performance class of Fe single-atom catalysts(FeSAC) by a facile pyrolysis. The optimal FeSAC-800 shows an excellent efficiency in the fastphotocatalytic degradation of six types of quinolone antibiotics(e.g., norfloxacin, levofloxacin, ciprofloxacin, enrofloxacin, lomefloxacin, flumequine) in 1 h under the simulated natural light irradiation. Based on advanced characterization, a well-defined structure of FeN_(4), confined in the porous carbon is elaborated for the FeSAC-800. Mechanism of the photodegradation is via a Fenton-like oxidation process whereas the reactive oxygen species play a key role. These findings open a new avenue for efficient, sustainable utilization of biomass waste in pollutant control. | Xin Li Kang Hu Yizhe Huang Qingqing Gu Yuwen Chen Bing Yang Rongliang Qiu Wenhao Luo Bert M.Weckhuysen Kai Yan | 2022 | Journal of Energy Chemistry2022，31，6： | 3 |
| 6 | Relative distribution of Pb 2+ sorption mechanisms by sludge-derived biochar显示文摘 | Huanliang Lu Weihua Zhang Yuxi Yang Xiongfei Huang Shizhong Wang Rongliang Qiu | 2011 | Water Research2011，，3： | 2 |
| 7 | Removal of trace and major metals by soil washing with Na2EDTA and oxalate显示文摘 | Rongliang Qiu Zeli Zou Zhihao Zhao Weihua Zhang Tao Zhang Hanying Dong Xiange Wei | 2010 | Journal of Soils and Sediments2010，，1： | 1 |
| 8 | Simultaneous photocatalytic reduction of Cr(VI) and oxidation of phenol over monoclinic BiVO 4 under visible light irradiation显示文摘 | Baoping Xie Hanxia Zhang Peixiang Cai Rongliang Qiu Ya Xiong | 2005 | Chemosphere2005，，6： | 1 |
| 9 | The study of operating variables in soil washing with EDTA显示文摘 | Zou Zeli Qiu Rongliang Zhang Weihua | 2009 | Environmental Pollution2009，157，1： | 1 |
| 10 | Removal of trace and major metals by soil washing with Na2EDTA and oxalate显示文摘 | QIU Rongliang ZOU Zeli ZHAO Zhihao | 2010 | Journal of Soils and Sediments2010，10，： | 1 |
| 11 | Characterization of sewage sludge-derived biochars from different feedstocks and pyrolysis temperatures显示文摘 | Huanliang Lu Weihua Zhang Shizhong Wang Luwen Zhuang Yuxi Yang Rongliang Qiu | 2013 | Journal of Analytical and Applied Pyrolysis2013，，： | 1 |
| 12 | Photocatalytic reduction of CO 2 to hydrocarbons using AgBr/TiO 2 nanocomposites under visible light显示文摘 | Mudar Abou Asi Chun He Minhua Su Dehua Xia Long Lin Huiqi Deng Ya Xiong Rongliang Qiu Xiang-zhong Li | 2011 | Catalysis Today2011，，1： | 1 |
| 13 | Zinc hyperaccumulation and uptake by potentilla griffithii hook显示文摘 | QIU Rongliang FANG Xiaohang TANG Yetao | 2006 | International Journal of Phytoremediation2006，8，： | 1 |
| 14 | Influence of EDTA washing on the species and mobility of heavy metals residual in soils显示文摘 | Weihua Zhang Hao Huang Fenfang Tan Hong Wang Rongliang Qiu | 2009 | Journal of Hazardous Materials2009，，1： | 1 |
| 15 | Role of oxygen active species in the photocatalytic degradation of phenol using polymer sensitized TiO2 under visible light irradiation显示文摘 | Zhang Dongdong Qiu Rongliang Song Lin | 2009 | Journal of Hazardous Materials2009，163，23： | 1 |
| 16 | Water eutrophication in China and the combating strategies 显示文摘 | LIU Wei QIU Rongliang | 2007 | Journal of Chemical Technology and Biotechnology2007，82，： | 1 |
| 17 | Lead, zinc and cadmium accumulation in herbaceous species and soils in Lanping Pb/Zn mining area,Yunnan Province, China显示文摘 | Yetao TANG Rongliang QIU Xiaowen ZENG Xiaohang FANG Xiaoyong ZHOU Fangming YU Yudu WU | 2006 | Chinese Journal Of Geochemistry2006，25，B08： | 1 |
| 18 | The study of operating variables in soil washing with EDTA显示文摘 | Zeli Zou Rongliang Qiu Weihua Zhang Hanying Dong Zhihao Zhao Tao Zhang Xiange Wei Xinde Cai | 2008 | Environmental Pollution2008，，1： | 1 |
| 19 | The acid dissolution characteristics of cadmium fixed by a novel Ca-Fe-Si composite material显示文摘Ca-Fe-Si material(CIS),a novel composite material rich in calcium,iron,manganese and silicon showed marvelous immobilization properties for heavy metal(loid)s in soils.To elucidate the acid stability of Cd fixed by CIS(CIS-Cd)and the underlying immobilizationmechanisms,the acid dissolution characteristics of CIS-Cdwere investigated by using acid titration method and X-ray diffraction(XRD)technique.The results showed that CIS-Cd had distinctive acid buffering capacity in different pH ranges.Based on the titration curve between dissolution rate of CIS-Cd and pH,CIS-Cd can be divided into non acid-stable Cd(9.4%),moderately acid-stable Cd(22.5%)and acid-stable Cd(68.1%).XRD analysis of CIS-Cd at different pH intervals and the correlation curves of dissolution rates of Cd and concomitant elements indicated that non acid-stable Cdwas mainly bound by carbonate,silicate and sulfate(CdCO_(3),Cd_(2)SiO_(4) and CdSO_(4))or co-precipitated with the corresponding calcium salts.Moderately acid-stable Cd was mainly bound by magnesium-aluminum-silicon containing minerals or electrically bound bymanganese iron minerals.Acid-stable Cd remaining undissolved at pH<2.42 included CdFe_(2)O_(4) and ferromanganese minerals strongly bound Cd.It was by multilateral fixation mechanisms that Ca-Fe-Si material possessed marvelous immobilization capability for Cd and strong resilience to environmental acidification as well.The findings implicated that proper combination of calcium-iron-silicon containing minerals could develop novel promising amendments with high efficiency in heavy metal(loid)s immobilization and strong resilience to environmental change. | Aijun Yao Xiang Guo Man Zhao Shizhong Wang Yetao Tang Rongliang Qiu | 2023 | Journal of Environmental Sciences2023，，5： | 0 |
| 20 | Responses of Carbonic Anhydrase to Cadmium in the Zinc/Cadmium Hyperaccumulator Picris divaricata Vant.显示文摘A number of higher plants are able to hyperaccumulate cadmium(Cd). However, it is unknown whether cadmium(Cd) plays a biological functional role in the carbonic anhydrase(CA) of hyperaccumulators. A hydroponic experiment was conducted to explore the potentially physiological function of Cd in CA and the accumulation and tolerance of Cd in the Zn/Cd hyperaccumulator Picris divaricata Vant. P. divaricata was exposed to nutrient solutions with six Cd concentrations(0, 5, 10, 25, 50 and 75 μmol L^(-1)). After 12 d, plants were harvested for the analysis of plant biomass, Cd concentration and CA activity. The Cd concentrations in plant increased with the increasing Cd in nutrient solution, reaching 640 and 3 100 mg kg^(-1) in shoot and root, respectively, at the 75 μmol L^(-1) Cd treatment. Meanwhile, plant growth was enhanced by the Cd treatments at 5–25 μmol L^(-1), but it was significantly inhibited when the plants were exposed to solutions with higher Cd concerntrations(50 and 75 μmol L^(-1)). Exposure to Cd significantly increased the CA activity in P. divaricata, which reached a maximum value of 21.27 U mg^(-1) proteins at the 25 μmol L^(-1)Cd treatment, and the CA activity and shoot Cd concentration were positively correlated at solutions Cd of ≤ 25 μmol L^(-1). Moreover, two protein bands appeared on the denatured gel electrophoresis of purified CA, indicating that P. divaricata may have CA isomers with their respective molecular weights at around 60 and 55 k Da, at least one of which is Cd-bound. In addition, trace amounts of Cd in purified CA significantly increased with the supplied Cd concentration in nutrient solution(5–25 μmol L^(-1)). The results suggested that Cd may play a biological role by enhancing the activities and forming the active Cd-specific CA in the hyperaccumulator P. divaricata. | LIU Saihua TANG Yetao QIU Rongliang YING Rongrong GE Ruiguang JI Xionghui | 2016 | Pedosphere2016，26，5： | 0 |
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