Glyphosate Removal from Water Using Biochar Based Coffee Husk Loaded Fe3O4

被引：12

作者：

Lita, Arestha Leo ^{[1
,2
]}

Hidayat, Endar ^{[3
,4
]}

Sarbani, Nur Maisarah Mohamd ^{[3
,4
]}

Harada, Hiroyuki ^{[3
,4
]}

Yonemura, Seiichiro ^{[3
,4
]}

Mitoma, Yoshiharu ^{[3
,4
]}

Herviyanti

Gusmini

机构：

[1] Prefectural Univ Hiroshima, Fac Bioresources Sci, Exchange Student Program, Shobara 7270023, Japan

[2] Andalas Univ, Fac Agr, Dept Soil Sci & Land Resource, Padang 25164, Indonesia

[3] Prefectural Univ Hiroshima, Grad Sch Comprehens & Sci Res, Shobara 7270023, Japan

[4] Prefectural Univ Hiroshima, Fac Bioresources Sci, Dept Life Sci, Shobara 7270023, Japan

来源：

WATER | 2023年 / 15卷 / 16期

关键词：

adsorption; desorption; glyphosate; isotherm; coffee husk biochar; kinetics; ADSORPTION; EQUILIBRIUM; DEGRADATION; MEMBRANES;

D O I：

10.3390/w15162945

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Glyphosate is an herbicide that is usually used by farmers and is considered harmful to the environment in excess amounts. To address these issues, coffee-husk-biochar-loaded Fe3O4 (CHB- Fe3O4) was used as an adsorbent to remove glyphosate from water. CHB-Fe3O4 characteristics such as pHpzc, FTIR, and SEM were measured to understand the properties of this adsorbent. The best conditions for glyphosate removal by CHB-Fe3O4 were obtained at pH 2.0, where the adsorption capacity and percentage removal are 22.44 mg/g and 99.64%, respectively, after 4 h of adsorption. The Freundlich model provided the best fit for the adsorption isotherm, demonstrating multilayer sorption. The most effective model for characterizing the adsorption kinetics was the pseudo-second-order model with a chemical adsorption mechanism. The desorption studies found that the use of 0.1 M NaOH was the best concentration to effectively desorb glyphosate with a desorption percentage of 69.4%. This indicates that CHB- Fe3O4 is a feasible adsorbent for glyphosate removal from water.

引用

页数：12

共 48 条

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