Xingmin Zhao's research while affiliated with Jilin Agricultural University and other places

Publications (13)

Article
Fluorine stability in the soil is crucial to protecting the groundwater and the food chain from pollution by fluorine, which was abundantly present (762.78–1330.66 mg/kg) in soda saline-alkali soil areas of western Jilin Province. This study investigated the fluorine distribution and pollution level in soil. Two representative areas in Zhenlai Coun...
Article
Agricultural tillage practices play an important role in the production and consumption of greenhouse gases (GHGs) that contribute substantially to the global warming. To explore GHG diffusion characteristic and seek for environment-friendly tillage methods, four tillage systems consisting of continuous rotary tillage (CR), continuous no tillage (C...
Article
Soil contamination by toxic heavy metals such as copper is a serious problem. In this study, the extracellular polymeric substance (EPS) extracted from Rahnella sp. LRP3 was found with the potential of immobilizing Cu-polluted in soil. The EPS could bond to Cu (II) through functional groups (polysaccharides, amide, proteins, and carboxyl groups), w...
Article
Full-text available
An appropriate tillage method must be implemented by maize growers to improve phosphorus dynamics in the soil in order to increase phosphorus uptake by plant. The objective of this study was to investigate the effects of tillage systems on phosphorus and its fractions in rhizosphere and non-rhizosphere soils under maize. An experimental field was e...
Conference Paper
Full-text available
This study investigated the overall trophic state of University Tunku Abdul Rahman (UTAR) lake, Kampar Campus Lake by using Carlson’s Trophic State index (CTSI). Water sampling was taken from five collection points with different inlet and outlet from other sources (lakes or drains). There were several parameters had been examined such as in-situ t...
Article
Full-text available
The soil organic carbon accumulation in soda saline-alkaline soil and the humus composition changes with application of aluminum sulfate and rice straw were investigated by the controlled simulative experiments in laboratory. For evaluating the amelioration effect, organic carbon content and humus composition in soda saline-alkaline soil were inves...
Article
Microbially induced phosphate precipitation (MIPP) is an advanced bioremediation technology to immobilize heavy metals in soil. In this study, an indigenous bacterial strain LRP3, identified as Rahnella sp., was isolated from Cu-contaminated dark brown soil in the mining area. Strain LRP3 could produce phytase and alkaline phosphatase to degrade ph...
Article
Full-text available
Animal wastes are potential sources of natural and steroidal estrogen hormones into the environment. These hormones can be removed by microorganisms with induced enzymes. Two strains of 17β-estradiol-degrading bacteria (LM1 and LY1) were isolated from animal wastes. Based on biochemical characteristics and 16 S rDNA gene sequences, we identified st...
Article
The significant investigation was performed to establish a chemical baseline for snowfall in Northeast of China since there was no such record. The chemical and mineral composition of snowfall samples were evaluated in Jilin Province, Northeast China. The specific purposes of the present study are to characterize the chemical and mineral compositio...
Article
Returning crop residues into fields, either alone or in combination with inorganic fertilizer, is considered a practical way to enhance soil fertility. Yet, information concerning the effects of crop residues and inorganic fertilizer application on water extractable organic matter (WEOM) in soil is scare. The aim of this study was to examine the 10...
Article
The simulation of Cr(VI) behavior in an unsaturated zone and aquifer, using a 3D experimental set-up were performed to illustrate the distribution, transport and transformation of Cr(VI), and further to reveal the potential harm of Cr(VI) after entering the groundwater. The result indicated that chromium(VI) was transported in the vertical directio...

Citations

... By building water conservancy facilities [59], using river water to change soil moisture infiltration, reducing soil salinity, and forming artificial wetlands suitable for rice cultivation, Zhenlai has achieved the goal of converting saline-alkali land into arable land. On the other hand, the main food crop was changed from corn to rice, and rice varieties that were suitable for local artificial wetland cultivation were developed [60], thereby further increasing food production. These measures make Zhenlai one of the important grain-producing areas in China. ...
... First, we provided a detailed, deep-screening economic analysis, demonstrating that significant reductions in finances (i.e., the alleviation of tillage costs, a reduced tillage frequency, diminished GHG emissions, a decrease in fuel consumption, etc.) can be achieved with the application of some reduced tillage systems, for example, of the DT and the LT, while attaining a high yield (Ahmed et al. 2020). Secondly, these systems' application can significantly improve and maintain the soil quality, for example, the phosphorus and potassium content, the availability thereof, and the enlargement of different phosphorus fractions, ultimately leading to an increased eco-friendly sustainability (Xomphoutheb et al. 2020). These strategies' endorsement could boost the usage efficiency of P and K, essentially declining the new fertilizer intake and promising financial cutbacks in the forthcoming decades (Pavinato et al. 2020). ...
... According to FTIR results (Fig. 8), after Pb(II) was adsorbed, the positions of carboxyl and phosphate groups on EPS changed or disappeared, indicating that Pb(II) could be combined with carboxyl and phosphate groups. It has been reported that EPS in the process of promoting biomineralization, crystals formed through the control of organic small molecules will join together and form mineral precipitates (Do et al. 2020). Tourney and Bryne (2014) concluded that EPS itself is an acidic electron donor and adsorbs metal cations, thus resulting in local mineral saturation. ...
... soil washing has limited applicability due to its higher cost and harsh treatment methods, while electrokinetic remediation is reported to produce secondary pollutants. Similarly, phytoremediation is a time-consuming process and its efficiency is limited by the seasonal dependence and morphological characteristics of plants (Zhao et al., 2019). Compared to all these techniques, chemical immobilization has emerged as an effective and environmentally friendly method of heavy metal remediation (Ahmad et al., 2016). ...
... Accordingly, higher silt + clay concentration aggregates are less susceptible to destructive forces than lower silt + clay concentration ones [47,48]. In addition, the increased moisture content in the current research promoted microbial activity, which enhanced the breakdown of macroaggregates [49,50]. The negative correlation between soil moisture content and aggregate stability was because soil minerals swell unevenly when wet, which induces aggregate cracking [51,52]. ...
... First, the strain was grown to log phase in LB, and the supernatant removed after centrifugation (7000 rpm·min −1 , 5 min), washed 3 times with sterile water, and OD 600 adjusted to 2.0, and the bacterial suspension was obtained. The degradation experiment was as described in [58] with minor modifications. The bacterial suspension was added to BSM to degrade E2 under the above conditions, and the best carbon and nitrogen source was selected according to the degradation results. ...
... The ratio of these forms of MMs and its variations are also frequently used informative indicators of different types of pollution sources [13][14][15][16]. In recent studies on snow cover pollution, special attention has been paid to the chemical composition of accumulated particulate matter and the determination of its mass [4,[17][18][19][20][21][22]. ...
... It is reported high FIX values (~1.8) indicate WEOM derived from microbes, and low FIX values (~1.2) indicate WEOM from terrestrial origin[21]. Yan et al.[48] reported the FIX values between 1.61 and 1.75 for WEOM in a black soil in Northeastern China. These researchers attributed the observations to mixed plant and microbial precursors for the WEOM. ...
... 、土柱试验 [8] 、箱体模 型试验 [9] 和离心试验等 [10] 。张文杰等 [11] 结合批式吸 附和土柱试验,研究了上海表层粉质黏土对 Cr(Ⅵ) 的吸附性能和优先流条件下 Cr(Ⅵ)在地表土中的迁 移规律。研究结果表明,粉质黏土对 Cr(Ⅵ)的吸附 符合 Henry 等温吸附,重金属迁移快慢程度与优先 流和黏土对重金属的吸附量有关。Zhao 等 [9] 采用三 维模型砂箱模拟了 Cr(Ⅵ)在非饱和区和含水层中的 运移。 Xu 等 [12] 研究分析了土壤 pH 对 Cr(Ⅲ)的运移、 形态转化和氧化的影响。上述研究揭示了不同条件 下 Cr(Ⅵ)在土-水介质中的迁移转化规律, 但未获取 Cr(Ⅵ)在土体中的运移参数。此外,吸附试验一般 采用小固液比,测定结果与土柱试验差别较大,不 能准确反映土体对污染物的实际吸附量 [13] ,鲜有研 究采用吸附试验和土柱试验对 Cr(Ⅵ)在粉质黏土中 运移参数进行对比测定。 随着计算机技术的飞速发展,数值模拟已成为 研究地下水污染物迁移转化的重要手段 [14][15][16][17][18] 。 He 等 [19] 采用数值模拟方法研究了某尾矿库中 Cu 2+ 、Zn 2+ 的 迁移及膨润土工程屏障的阻滞,结果表明 5 年后重 金属离子的最大迁移距离达 45 m,0.5 m 厚膨润土 工程屏障对污染物的阻滞效率超过 87%。吕永高 等 [20] 建立了研究区平面二维稳定流数值模型,确定 了污染场地中渗透反应墙的最佳布设位置。目前, 已有研究多采用模型预测铬渣渗滤液迁移的动态及 趋势 [21][22][23] (2)渗透和弥散试验 定,X、Y 方向的渗透系数相同,Z 方向渗透系数取 水平向渗透系数的 1/10 [32] 。体积密度通过室内试验 Table 2 Calculation parameters of medium silty and round gravel aquifer ...