Wood-derived bio-coating materials incorporating hydrophobic lignin and hierarchically porous biochar for high-efficiency coating slow-release fertilizers

被引：7

作者：

Dong, Hongping ^{[1
,3
,4
]}

Tang, Shifeng ^{[1
,3
,4
]}

Zhang, Lin ^{[1
,3
,4
,5
]}

Tong, Zhaohui ^{[2
,5
]}

Wu, Zhiping ^{[1
,3
,4
]}

Zhan, Peng ^{[1
,3
,4
]}

Shao, Lishu ^{[1
,3
,4
]}

Qing, Yan ^{[1
,3
,4
]}

Liu, Jin ^{[1
,3
,4
]}

机构：

[1] Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Peoples R China

[2] Georgia Inst Technol, Renewable Bioprod Inst, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA

[3] Cent South Univ Forestry & Technol, Minist Forestry Bioethanol Res Ctr, Changsha 410004, Peoples R China

[4] Cent South Univ Forestry & Technol, Hunan Int Joint Lab Woody Biomass Convers, Changsha 410004, Peoples R China

[5] Univ Florida, Inst Food & Agr Sci IFAS, Agr & Biol Engn, Gainesville, FL 32611 USA

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2023年 / 242卷

关键词：

Lignin; Biochar; Bio-coating; Slow -release fertilizer; Rice hydroponics; SOFTWOOD KRAFT LIGNIN; COATED UREA;

D O I：

10.1016/j.ijbiomac.2023.124769

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Coating slow-release fertilizers (CSRFs) have gained significant attention for their potential to improve nutrient utilization efficiency and prevent environmental pollution through mitigating soil and water contamination. This study developed a novel wood waste-derived composition as a bio-coating material for urea slow-release by integrating modified lignin (PCL) and activated biochar (ABC). PCL was prepared by grafting palmitoyl chloride (PC) with hydrophobic groups to the lignin via an esterification reaction. ABC with a high surface area and hierarchically porous structure created rich channels for ion transportation. These results increased the water -retention ability with a reduced absorbing/expelling rate and confer an excellent Cr(VI) adsorption capacity to the PCL and ABC hybrid coating material (PCL/ABC). The as-prepared PCL/ABC-based CSRF (PCL/ABC-CSRF) showed improving fertilizer slow-release properties for real application (nitrogen release persistence for 40 days at soil). The rice (Oryza sativa L.) hydroponics study suggested that such novel PCL/ABC was conducive to the rice growth in micro metallic contaminated hydroponics by eliminating the accumulation of chromium metal in rice roots. Overall, this study provides an attractive platform for developing biodegradable, heavy-metal adsorbable, and high-efficient CSRFs and a feasible and effective way for functionalized utilization of wood waste.

引用

页数：11