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| 1 | Green Synthesis of Magnetic Adsorbent Using Groundwater Treatment Sludge for Tetracycline Adsorption显示文摘Groundwater treatment sludge is an industrial waste that is massively produced from groundwater treatment plants.Conventional methods for treatment of this sludge,such as discharge into deep wells or the sea,or disposal at landfills,are not environmentally sustainable.Here,we demonstrate an alternative strategy to recycle the sludge by preparing a magnetic maghemite adsorbent via a one-step hydrothermal method with NaOH solution as the only solvent.With this method,the weakly magnetized sludge,which contained 33.2%iron(Fe)and other impurities(e.g.,silicon(Si),aluminum(Al),and manganese(Mn)),was converted to magnetic adsorbent(MA)with the dissolution of Si/Al oxides(e.g.,quartz and albite)into the liquid fraction.At a NaOH concentration of 2 mol L^-1,approximately 18.1%of the ferrihydrite in the Fe oxides of the sludge was converted into 11.2%maghemite and 6.9%hematite after the hydrothermal treatment.MA2(i.e.,MA produced by a 2 mol L^-1 NaOH concentration)exhibited a good magnetic response of 8.2 emu g^-1(1 emu=10^-3 A m^2),and a desirable surface site concentration of 0.75 mmol g^-1.The synthesized MA2 was used to adsorb the cationic pollutant tetracycline(TC).The adsorption kinetics of TC onto MA2 fitted well with a pseudo-second-order model,and the adsorption isotherms complied well with the Langmuir model.The maximum adsorption capacity of MA2 for TC was 362.3 mg g^-1,and the main mechanism for TC adsorption was cationic exchange.This study is the first to demonstrate the preparation of an MA from recycled sludge without a reductant and/or exogenous Fe source.The prepared adsorbent can be used as a low-cost adsorbent with high capacity for TC sorption in the treatment of TC-containing wastewater. | Zhan Qu Yaqiong Wu Suiyi Zhu Yang Yu Mingxin Huo Leilei Zhang Jiakuan Yang Dejun Bian Yi Wang | 2019 | Engineering2019，5，5： | 2 |
| 2 | Study on treatment of polytetrahydrofuran wastewater by iron-carbon micro-electrolysis 显示文摘 | Tian Xi Huo Mingxin Bian Dejun | 2013 | Applied Mechanics and Meterials2013，，： | 1 |
| 3 | Novel Porous Polyethersulfone Beads as Matrix to Immobilize Comamonas testosteroni sp. bdq06 in Quinoline Biodegradation显示文摘 | GENG Zhi ZHU Suiyi YU Yang LU Ying LIN Rao GUO Shujun BIAN Dejun YANG Xia HUO Mingxin HUO Hongliang | 2015 | Chemical Research in Chinese Universities2015，31，4： | 1 |
| 4 | Comparing Polyethersulfone and Polyurethane-immobilized Cells of Comamonas testosteroni QYY in Treatment of an Accidental Dye Wastewater显示文摘 | GENG Zhi YU Yang ZHU Suiyi YU Hongbin LIU Jiancong BIAN Dejun YANG Xia HUO Hongliang HUO Mingxin | 2017 | Chemical Research in Chinese Universities2017，33，1： | 1 |
| 5 | Characteristics of source rocks and hydrocarbon resource prospects of Permian Linxi Formation in northern Songliao Basin显示文摘In order to explore the oil and gas resource prospects in the Carboniferous–Permian strata in northern Songliao Basin,geological survey boreholes(HFD 1 and HFD 2)were drilled in the area,and thick dark mudstone and slate of the Upper Permian Linxi Formation were encountered.Source rock geochemistry analysis of the samples show that the organic matter abundance of the Upper Permian Linxi Formation source rock in the north of Songliao Basin is high,which belongs to medium to good source rock.The organic matter belongs to type Ⅱ,and it is in the evolution stage of highly mature to over mature.The Pr/Ph ratios of the source rocks range from 0.16 to 0.93,with an average of 0.53.The phytane predominance is obvious,and indicates a strong reduction to reduction sedimentary environment,which is conducive to the preservation of organic matter.Pr/nC_(17),Ph/nC_(18) and C_(27)–C_(28)–C_(29) regular steranes indicate that the organic matter was derived from a mixture of vascular plants and aquatic organisms such as algae,and is mainly contributed by phytoplankton.Through comprehensive analysis,it is considered that the source rocks of the Upper Permian Linxi Formation in northern Songliao Basin have entered the gas generation stage and have shale gas exploration prospects. | ZHANG Haihua GENG Shufeng ZHANG Jian SUN Lei CHEN Shuwang SU Fei ZHENG Yuejuan ZHANG Dejun BIAN Xiongfei | 2022 | Global Geology2022，25，3： | 1 |
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