CAJ | 학술논문

铁矿渣是常见的廉价固体废弃物之一,以铁矿渣为吸附材料,运用环境扫描电子显微镜和X-射线衍射仪分析其形貌和矿物成份,进行静态批实验和动态土柱吸附实验.研究表明铁矿渣对高砷水中五价砷的吸附符合Langmuir吸附等温曲线.温度对吸附砷效果影响明显,较高温度有利于砷的吸附(40℃>30℃>20℃),温度主要影响吸附过程中孔隙扩散阶段的吸附速率,高砷水呈酸性时吸附效果优于碱性条件.土柱吸附实验当进水砷为1829.2μg/L时.进水体积比为1200倍时,出水浓度仍低于50μg/L,且出水的铁、铜、银、锌等金属离子均未超标.该论文为进一步探究铁矿渣对高砷水中砷的去除提供了实验研究支撑.
철광사시상견적렴개고체폐기물지일,이철광사위흡부재료,운용배경소묘전자현미경화X-사선연사의분석기형모화광물성빈,진행정태비실험화동태토주흡부실험.연구표명철광사대고신수중오개신적흡부부합Langmuir흡부등온곡선.온도대흡부신효과영향명현,교고온도유리우신적흡부(40℃>30℃>20℃),온도주요영향흡부과정중공극확산계단적흡부속솔,고신수정산성시흡부효과우우감성조건.토주흡부실험당진수신위1829.2μg/L시.진수체적비위1200배시,출수농도잉저우50μg/L,차출수적철、동、은、자등금속리자균미초표.해논문위진일보탐구철광사대고신수중신적거제제공료실험연구지탱.
This paper describes a bench scale experiment with a purpose to looking for a kind of inexpensive material to tackle health hazards from high As-containing groundwater. Common iron slag was used and tested to remove arsenic from water, on which a series of batch adsorption experiment and a dynamic column experiment were conducted. Results indicate that, as a general, the isothermal adsorption curve conforms to the Langmuir equation; that within a certain range of 20-40℃, the higher the temperature, the better removal of As would be obtained; and that water in acidic condition (pH<5) facilitates adsorption of As on the iron slag. Moreover, different kinds of equipment are used for studying iron slag samples including X-ray diffraction for characterization, SEM for micro-morphology and ICP-AES for metal elements analysis.