Enhanced adsorption of cadmium from aqueous solution by amino modification biochar and its adsorption mechanism insight

生物炭 吸附 化学 傅里叶变换红外光谱 水溶液 X射线光电子能谱 吸热过程 朗缪尔吸附模型 核化学 无机化学 化学工程 有机化学 热解 工程类
作者
Fengfeng Ma,Hao Zhao,Xudong Zheng,Baowei Zhao,Jingru Diao,Yufeng Jiang
出处
期刊:Journal of environmental chemical engineering [Elsevier BV]
卷期号:11 (3): 109747-109747 被引量:41
标识
DOI:10.1016/j.jece.2023.109747
摘要

Cadmium (Cd) in industrial wastewater can accumulate in organisms in the aquatic environment, posing a severe threat to human health. Therefore, effective remediation of cadmium-contaminated water is necessary for public health and environmental sustainability. In this study, the amino groups were modified on the corn stalks biochar (CSBC) surface to prepare a highly selective Cd(Ⅱ) adsorbent (NH2-CSBC) by nitrification and reduction. Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analysis demonstrated that amino groups were modified on the surface of CSBC. The adsorption capacity of NH2-CSBC for Cd(Ⅱ) was 4 times that of the original CSBC. The adsorption kinetics results showed that the Cd(Ⅱ) adsorption process by NH2-CSBC can be well described by the pseudo-second-order kinetic model. The maximum adsorption capacity obtained by the Sips model fitting reached 375.58 mg/g. The adsorption thermodynamic results indicated that Cd(Ⅱ) adsorption by NH2-CSBC was a spontaneous endothermic process. The analysis results based on FTIR and XPS before and after Cd(Ⅱ) adsorption showed that the amino functional groups on the surface of NH2-CSBC have strong complexation with Cd(Ⅱ). In summary, it is feasible to modify amino groups on the surface of biochar, and the obtained amino-modified biochar could adsorb Cd(Ⅱ) quickly and efficiently, showing great potential in the treatment of heavy metal wastewater.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
Ren发布了新的文献求助10
刚刚
orixero应助KYpaopao采纳,获得10
刚刚
今后应助黄哈哈采纳,获得10
刚刚
自觉山柏完成签到,获得积分10
1秒前
2秒前
2秒前
3秒前
CipherSage应助平常的紫蓝采纳,获得10
4秒前
5秒前
xixi很困完成签到 ,获得积分10
6秒前
8秒前
zcy发布了新的文献求助10
8秒前
8秒前
香蕉觅云应助云岫采纳,获得10
8秒前
8秒前
9秒前
全若之发布了新的文献求助10
10秒前
爆米花应助谷大喵唔采纳,获得10
11秒前
小马甲应助旺仔Mario采纳,获得10
11秒前
思源应助乘风采纳,获得10
11秒前
PT177245发布了新的文献求助10
12秒前
12秒前
14秒前
15秒前
15秒前
陈某关注了科研通微信公众号
16秒前
zcy完成签到,获得积分10
17秒前
EgoElysia关注了科研通微信公众号
17秒前
天天快乐应助未道采纳,获得10
18秒前
归尘发布了新的文献求助10
18秒前
19秒前
隐形曼青应助科研通管家采纳,获得10
19秒前
猪猪hero应助科研通管家采纳,获得10
19秒前
orixero应助科研通管家采纳,获得10
20秒前
情怀应助科研通管家采纳,获得10
20秒前
pluto应助科研通管家采纳,获得10
20秒前
20秒前
田様应助科研通管家采纳,获得10
20秒前
20秒前
香蕉觅云应助科研通管家采纳,获得10
20秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3988827
求助须知:如何正确求助?哪些是违规求助? 3531197
关于积分的说明 11252739
捐赠科研通 3269830
什么是DOI,文献DOI怎么找? 1804815
邀请新用户注册赠送积分活动 881915
科研通“疑难数据库(出版商)”最低求助积分说明 809028