Development of a New Dolomite-Based Adsorbent with Phosphorus and the Adsorption Characteristics of Arsenic (III) in an Aqueous Solution
Development of a New Dolomite-Based Adsorbent with Phosphorus and the Adsorption Characteristics of Arsenic (III) in an Aqueous Solution
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DOI：
10.3390/w14071102
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发表时间：
2022-03
期刊：
影响因子：
3.4
通讯作者：
Zoltuya Khashbaatar;Shota Akama;N. Kano;Hee-Joon Kim
中科院分区：
文献类型：
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作者：
Zoltuya Khashbaatar;Shota Akama;N. Kano;Hee-Joon Kim
近几十年来，清除因工业和消费活动而进入废水和地下水的危险化学品已成为一个令人关切的问题。具体而言，从地下水中去除砷（III）是至关重要的，并且在使用低成本、高效的吸附剂材料时同样至关重要。本研究的一个目的是通过煅烧白云石中的Ca组分与磷反应来开发低成本的羟基磷灰石吸附剂（Ca 5（PO 4）3OH），另一个目的是将所开发的吸附剂应用于从发展中国家的井水中去除砷（III）。在这项研究中，磷的吸附进行了热煅烧白云石，磷的吸附等温线的研究选择煅烧白云石。磷在所选煅烧白云石上的最大吸附量为194.03 mg-P/g，符合Langmuir吸附等温式。在较宽的pH范围内（pH 2~12）对砷（III）进行了吸附研究。吸附的砷（III）的量为4.3mg/g。新的吸收剂可以有效地去除砷（III），并成为一种负担得起的材料。
In recent decades, the removal of hazardous chemicals that have entered wastewater and groundwater as a result of industrial and consumer activities has become an issue of concern. Specifically, removing arsenic (III) from groundwater is critical and equally crucial in the use of low-cost, efficient adsorbent materials. One purpose of this study was to develop a low-cost hydroxyapatite adsorbent (Ca5(PO4)3OH) by reacting the Ca component of calcined dolomite with phosphorus, and another was to apply the developed adsorbent to remove arsenic (III) from well water in developing countries. In this study, phosphorus adsorption was performed on thermally calcined dolomite, and the adsorption isotherm of the phosphorus study was investigated on selected calcined dolomite. The maximum amount of phosphorus on the selected calcined dolomite was 194.03 mg-P/g, and the Langmuir isotherm model was fitted. Arsenic (III) adsorption was investigated in a wide pH range (pH 2~12) using the new adsorbent. The amount of arsenic (III) adsorbed was 4.3 mg/g. The new absorbent could be effective in removing arsenic (III) and become an affordable material.