Lower-Temperature Pyrolysis to Prepare Biochar from Agricultural Wastes and Adsorption for Pb2+

被引：0

作者：

Zhang, Chunyan ^{[1
,2
]}

He, Chunxia ^{[1
]}

Qiao, Yinhu ^{[2
]}

机构：

[1] Nanjing Agr Univ, Coll Engn, Nanjing 210031, Jiangsu, Peoples R China

[2] Anhui Sci & Technol Univ, Sch Mech Engn, Fengyang 233100, Peoples R China

来源：

BIORESOURCES | 2018年 / 13卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Agricultural wastes; Biochar; Lower-temperature pyrolysis; Partial limited oxygen; Adsorption; ACTIVATED CARBON; PHYSICOCHEMICAL PROPERTIES; AQUEOUS-SOLUTION; REMOVAL; CD(II); PB(II); IONS;

D O I：

暂无

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

Many agricultural activities generate large quantities of biomass wastes. Using these wastes to produce value-added products or energy has become very important in recent years. Heavy metals such as lead are among the most toxic chemical water pollutants from natural or anthropogenic sources. The goals of this work were to prepare three biochars from maize straw (BMS), sunflower straw (BSS), and wheat straw (BWS) under partial limited oxygen condition and to characterize their ability to adsorb Pb2+ from water. The sorption kinetics as well as the influence of solution pH and Pb2+ concentration was investigated. The three biochars had a good performance for Pb2+ adsorption. A greater adsorption efficiency was observed for BMS and BSS than for BWS. The physico-chemical properties of the biochars showed that the adsorption performance was correlated with preparation conditions, raw material types, higher total porosity, and micro-structure.

引用

页码：5543 / 5553

页数：11

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