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3篇 您的检索式:作者名="Shriful Islam"
    题名 作者 年代 出处 被引量
1Coagulation enhanced electrokinetic settling of mature fine oil sands tailings显示文摘The mature fine oil sand tailings(MFT) remain as slurry in the tailings pond for long time. The dewatering and consolidation of MFT for sustainable management is an important task for the mining industry. The objective of this study is to accelerate electrokinetic settling of MFT solids in suspensions in presence of optimal coagulant. In the first phase, optimal coagulant and coagulant dosage for settling of suspension are identified, i.e., ferric chloride at 350 mg/L. It is found that the chemical treatment is not much effective; the final solid content of the sediment is only 6.48% from an initial of 5%. In the second phase,combined coagulation and electrokinetic treatment is carried out to enhance the settling effect. The direct electric current is applied in continuous and intermittent modes on MFT suspensions placed in electrokinetic cell. The results show the final solid content reaches 23.74% under the combined application of350 mg/L ferric chloride and 218.75 V/m applied voltage gradient in the continuous mode. The intermittent current mode with 40% save in power consumption produces a settled sediment having 20.84% final solid content.Shriful Islam Julie Q.Shang 2019International Journal of Mining Science and Technology2019,29,2:4
2Settling,consolidation and shear strength behaviour of coal tailings slurry显示文摘The volume change and shear strength behaviour of tailings slurry with the changes in gravimetric moisture content is important to effectively utilise the storage volume and analysis of dam failure potential.Consolidation testing of tailings from a slurry-like to soil-like state is a critical task,and conventional consolidation apparatus does not have the capability of doing such testing,as the tailings slurries contain high water content.Settling tests conducted on slurries having a 25%solids concentration showed very low efficiency;final sediment was still slurry-like.An intrinsic point was identified based on pore water pressure dissipation during consolidation tests in a slurry consolidometer that can define two states of the tailings i.e.slurry-like and soil-like.In the slurry-like state,the volume change was greater for Slurry 2 than Slurry 1,while the inverse was observed in the soil-like state.The evolution of peak vane shear strength with the changes in moisture content was almost similar for both samples and obeyed the power function.Regression models have been developed and validated to predict the shear strength of materials at any gravimetric moisture content or void ratio.Shriful Islam David J.Williams Marcelo Llano-Serna Chenming Zhang 2020International Journal of Mining Science and Technology2020,30,6:2
3中孟居民空气污染感知与行为的比较研究——基于郑州市和达卡市的调查显示文摘本论文选取问卷调查等研究方法,通过对郑州市和达卡市两城市大气污染现状、大气污染治理政策以及当地居民对空气污染感知与行为等,进行系统的整理和对比分析,研究结果显示:(1)郑州市居民空气污染感知与行为呈弱正相关关系,居民空气污染感知与其受教育水平、年龄相关,居民环境行为与其性别、职业相关;(2)达卡市居民空气污染感知与行为呈弱正相关关系,居民环境行为与性别、年龄、文化程度有关,但相关系数较弱;(3)郑州市与达卡市居民空气污染感知都相对较弱,两者比较,郑州市系数较大,但是达卡城市居民空气污染感知与行为较为一致,而郑州市居民空气污染感知与行为一致性较差。Md Shriful Islam 付允 2022山西化工2022,42,3:0
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