Understanding water retention behavior and mechanism in bio-char

烧焦 生物炭 化学 微型多孔材料 多孔性 可用水量 化学工程 束缚水 体积热力学 大孔隙 吸附 含水量 土壤水分 热解 有机化学 土壤科学 热力学 堆积密度 分子 环境科学 催化作用 地质学 物理 工程类 岩土工程 介孔材料
作者
Svetlana Bikbulatova,Arash Tahmasebi,Zhiqiang Zhang,Salman Khoshk Rish,Jianglong Yu
出处
期刊:Fuel Processing Technology [Elsevier]
卷期号:169: 101-111 被引量:30
标识
DOI:10.1016/j.fuproc.2017.09.025
摘要

Bio-char has been applied to soil as an amendment to improve soil water holding capacity due to its porous nature. In this study the behavior of water in bio-char was investigated for better understanding mechanisms of water retention by bio-char. Bio-chars with different structures were prepared by partial gasification of peanut shell (PT) and palm kernel shell (PKS). It was observed that the BET surface area and total pore volume of bio-char increased with gasification conversion. Water holding capacity and water adsorption rate showed a direct correlation with micropore volume of bio-char, suggesting that physical structure of bio-char played a key role during interaction with water. These results indicated that partial gasification is a promising method for production of bio-char suitable for soil remediation. Two types of freezable water i.e. freezable free water (FFW) and freezable bound water (FBW) were directly detected in bio-char samples during Differential Scanning Calorimetry (DSC) analysis. The phase transition temperature of freezable bound water correlated well with pore size distribution of bio-chars. The presence of non-freezable (NFW) water in bio-char was also confirmed from the difference between total water content of samples and the sum of FFW and FBW. The amount of FFW showed an indirect correlation with micropore volume of bio-chars, suggesting that FFW is present in macropores. However, an opposite trend was observed for FBW and NFW in bio-chars, indicating that these two types of water were present in micropores. The low-temperature XRD results were used to define the boundary between the freezable and non-freezable water in bio-char samples.
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
大幅提高文件上传限制,最高150M (2024-4-1)

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
日落发布了新的文献求助10
刚刚
董雪发布了新的文献求助10
1秒前
xinlei2023发布了新的文献求助10
1秒前
恩赐解脱发布了新的文献求助10
2秒前
yangling0124完成签到,获得积分10
3秒前
我是老大应助SUIJI采纳,获得10
3秒前
lym发布了新的文献求助20
4秒前
乐乐应助牛马研究生采纳,获得10
4秒前
4秒前
彭于晏应助达利园采纳,获得10
5秒前
5秒前
你猜完成签到,获得积分10
5秒前
顾矜应助末小皮采纳,获得10
6秒前
LDN完成签到,获得积分10
7秒前
关河发布了新的文献求助10
9秒前
徐裘完成签到,获得积分20
9秒前
9秒前
9秒前
璀璨完成签到,获得积分10
9秒前
momo发布了新的文献求助10
9秒前
王讯完成签到,获得积分10
9秒前
迷路毛豆发布了新的文献求助10
10秒前
SUIJI完成签到,获得积分20
10秒前
慕青应助胖楹子采纳,获得10
10秒前
wuwuhu完成签到,获得积分10
11秒前
一区作者发布了新的文献求助10
11秒前
税呆呆发布了新的文献求助10
11秒前
传奇3应助乐乐乐乐乐乐采纳,获得10
11秒前
思源应助乐乐乐乐乐乐采纳,获得10
12秒前
Lucas应助乐乐乐乐乐乐采纳,获得10
12秒前
12秒前
12秒前
脑洞疼应助乐乐乐乐乐乐采纳,获得10
12秒前
酷波er应助大圆饼子采纳,获得10
12秒前
111111111完成签到,获得积分10
13秒前
天天快乐应助IKK采纳,获得10
13秒前
明天更好发布了新的文献求助20
13秒前
aileen9190发布了新的文献求助10
13秒前
13秒前
852应助念心采纳,获得10
13秒前
高分求助中
Sustainability in Tides Chemistry 2800
The Young builders of New china : the visit of the delegation of the WFDY to the Chinese People's Republic 1000
юрские динозавры восточного забайкалья 800
English Wealden Fossils 700
Foreign Policy of the French Second Empire: A Bibliography 500
Chen Hansheng: China’s Last Romantic Revolutionary 500
XAFS for Everyone 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 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 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3143506
求助须知:如何正确求助?哪些是违规求助? 2794865
关于积分的说明 7812588
捐赠科研通 2450967
什么是DOI,文献DOI怎么找? 1304178
科研通“疑难数据库(出版商)”最低求助积分说明 627193
版权声明 601386