SDS modified mesoporous silica MCM-41 for the adsorption of Cu2+, Cd2+, Zn2+ from aqueous systems

被引：24

作者：

Kaewprachum, Wanchai ^{[1
]}

Wongsakulphasatch, Suwimol ^{[2
]}

Kiatkittipong, Worapon ^{[3
]}

Striolo, Alberto ^{[4
]}

Cheng, Chin Kui ^{[5
]}

Assabumrungrat, Suttichai ^{[1
]}

机构：

[1] Chulalongkorn Univ, Fac Engn, Dept Chem Engn, Ctr Excellence Catalysis & Catalyt React Engn, Bangkok 10330, Thailand

[2] King Mongkuts Univ Technol North Bangkok, Fac Engn, Dept Chem Engn, Bangkok 10800, Thailand

[3] Silpakorn Univ, Fac Engn & Ind Technol, Dept Chem Engn, Amphoe Muang 73000, Nakhon Pathom, Thailand

[4] UCL, Dept Chem Engn, London WC1E 7JE, England

[5] Univ Malaysia Pahang, Fac Chem & Nat Resources Engn, Pahang 26300, Malaysia

来源：

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2020年 / 8卷 / 01期

关键词：

Modified-functionalized nanoporous material; Adsorbent; Metal ions removal; MICELLAR-ENHANCED ULTRAFILTRATION; SELF-ASSEMBLED MONOLAYERS; HEAVY-METAL IONS; REMOVAL; CADMIUM(II); RECOVERY; SUPPORTS; BEHAVIOR; SURFACE;

D O I：

10.1016/j.jece.2019.102920

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

SDS-functionalized mesoporous silica MCM-41, was synthesized and used as adsorbent for remediating toxic metal contamination. The new material was applied to capture the heavy metal ions Cu2+, Cd2+, and Zn2+ from synthetic aqueous solutions. The performance of the hybrid adsorbent was quantified with respect to metal ions removal and its regeneration capability. The results show that equilibrium adsorption of Cd2+ can be achieved within 30 min, whereas removing Cu2+ and Zn2+ requires 1 h of exposure. The adsorption capacity is found to depend on the metal ion, with Cu2+ > Cd2+ > > Zn2+. It was found that the solution pH affects performance: stronger adsorption was observed at neutral than at acidic pH. The hybrid adsorbents can be regenerated up to 6 times by using an acid removal technique in solution. The adsorption capacity at the sixth cycle is 70% of that of the pristine materials.

引用

页数：8

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