Ultrafine microparticulation of adsorbents breaksadvanced membrane process

吸附剂的超细微粒破坏了先进的膜工艺

• 批准号: 21246083
• 负责人: MATSUI Yoshihiko
• 金额: $ 17.22万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009-05-11 至 2013-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21246083/
• 关键词: 用排水システム; 吸着; 活性炭; MF膜; 膜分離; 浄水; 2-メチルイソボルネオール; フミン質

The capacity to adsorb natural organic matter (NOM) and polystyrene sulfonates (PSSs) on super-fine powdered-activated carbon (SPAC) is higher than that on conventional powdered-activated carbon (PAC). Increased adsorption capacity was due to the larger external surface area because the NOM and PSS molecules did not completely penetrate the adsorbent particle; they preferentially adsorbed near the outer surface of the particle. The results of field emission scanning electron microscopy/energy-dispersive X-ray spectrometry provided the direct evidence of this phenomenon. We also successfully proposed the Shell Adsorption Model (SAM) to describe quantitatively adsorption isotherms of different carbon particle sizes. The adsorption kinetics was well described by SAM + Branched Pore Kinetic Model. The use of SPAC in the coagulation pretreatment for membrane microfiltration attenuates trans-membrane pressure increases as well as enhancing the dissolved substance removal. The mechanism was explained on coagulation theory: floc particle size, particle-particle collision frequency, and NOM removal.

超细粉状活性炭（SPAC）对天然有机物（NOM）和聚苯乙烯磺酸盐（PSS）的吸附能力高于传统粉状活性炭（PAC）。吸附容量的增加是由于NOM和PSS分子没有完全渗透吸附剂颗粒而导致的更大的外表面积；它们优先吸附在颗粒的外表面附近。场发射扫描电子显微镜/能量色散X射线光谱仪的结果提供了这一现象的直接证据。我们还成功提出了壳吸附模型（SAM）来定量描述不同碳颗粒尺寸的吸附等温线。 SAM + 支化孔动力学模型很好地描述了吸附动力学。在膜微滤的混凝预处理中使用 SPAC 可以减弱跨膜压力的增加，并增强溶解物质的去除。其机理通过混凝理论进行解释：絮体粒径、颗粒间碰撞频率和 NOM 去除。

项目成果

粉末活性炭の微粒度化によるNOM吸着容量増加のメカニズムとモデル化,2010

由于粉状活性炭粒径减小而增加 NOM 吸附容量的机制和模型，2010

• 发表时间: 2010
• 作者: 松井智哉;溝渕博己;倉本 洋;福山祥代;Y.Noguchi;吉田智明,安藤直哉,松井佳彦,松下拓,大野浩一
• 通讯作者: 吉田智明,安藤直哉,松井佳彦,松下拓,大野浩一

塩素との接触による粉末活性炭の臭気物質2-MIB、ジェオスミン吸着能

粉状活性炭对加味剂 2-MIB、土臭素与氯接触后的吸附能力

• 发表时间: 2011
• 作者: 大野浩一;白鳥良樹;松下拓;松井佳彦
• 通讯作者: 松井佳彦

Geosmin and 2-methylisoborneol adsorption on super-powdered activated carbon in the presence of natural organic matter.

• DOI: 10.2166/wst.2010.415
• 发表时间: 2010-12
• 期刊: Water science and technology : a journal of the International Association on Water Pollution Research
• 作者: Y. Matsui;Y. Nakano;H. Hiroshi;Naoya Ando;T. Matsushita;K. Ohno

Direct observation of solid-phase adsorbate concentration profile in powdered activated carbon particle to elucidate mechanism of high adsorption capacity on super-powdered activated carbon.

• DOI: 10.1016/j.watres.2010.08.050
• 发表时间: 2011
• 期刊: Water research
• 影响因子: 12.8
• 作者: Naoya Ando;Y. Matsui;T. Matsushita;K. Ohno

Matsushita, T. and Ohno, K., Super-powdered activated carbon: optimizing adsorbent particle size for enhancing taste and odor removal

Matsushita, T. 和 Ohno, K.，超粉状活性炭：优化吸附剂粒径以增强味道和去除异味

• 发表时间: 2010
• 作者: Matsui;Y.;Ando;N.;Sasaki;H.;Yoshida;T.
• 通讯作者: T.