Phosphorous Retention and Release by Sludge‐Derived Hydrochar for Potential Use as a Soil Amendment

水热碳化 修正案 生物炭 化学 吸附 污水污泥 环境科学 环境化学 分馏 肥料 热解 资源回收 碳化 环境工程 制浆造纸工业 污水处理 色谱法 废水 有机化学 工程类 法学 政治学
作者
Ying-heng Fei,Dan Zhao,Yulong Cao,Hermine Huot,Yetao Tang,Hongguo Zhang,Tangfu Xiao
出处
期刊:Journal of Environmental Quality [Wiley]
卷期号:48 (2): 502-509 被引量:37
标识
DOI:10.2134/jeq2018.09.0328
摘要

To solve both the problems of P deficiency in arable soil and excessive waste sludge disposal, we evaluated hydrothermal carbonization of sludge with the aim of recycling sludge P resources for soil amendment. In contrast with pyrochars obtained through pyrolysis, hydrochars generated from hydrothermal carbonization often feature variable properties and therefore require detailed characterization. In this study, sludge‐derived hydrochars were evaluated to determine their P content and fractionation, release and availability of P, and P adsorption and desorption behavior. We also assessed changes in P availability after soil was amended with the hydrochars. Our results showed that the chars were rich in total P (up to 25,175 mg kg −1 ), but most of the free fractions were transformed to bound fractions, thereby reducing the available P concentrations. However, available P content was >417 mg kg −1 , which was far higher than soil demand. The hydrochars shifted from releasing to adsorbing P adsorbent when the environmental P concentration increased above 20 mg L −1 . The hydrochars showed a high phosphate adsorption capacity (up to 23,815 mg kg −1 ) and the adsorbed P could be readily released. The addition of 1% P‐laden hydrochar significantly enhanced the soil available P content by 8.93 mg kg −1 . These findings have important implications for further development of hydrochar‐based P carriers as a slow‐releasing fertilizer. Core Ideas Charring transformed P from readily available fractions to moderately available ones. Sludge‐derived hydrochars showed the best performance in long‐term P release. Sludge‐derived hydrochars had better P retention capacity than their feedstock. Applying the sludge‐derived hydrochar improved the available P content of soil.
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
aktuell发布了新的文献求助10
2秒前
王子安应助Stardust采纳,获得10
4秒前
充电宝应助顺利涵菡采纳,获得10
6秒前
7秒前
Buduan完成签到,获得积分10
8秒前
8秒前
Ma关注了科研通微信公众号
10秒前
10秒前
11秒前
畅快城发布了新的文献求助10
11秒前
复成完成签到 ,获得积分10
12秒前
yinle关注了科研通微信公众号
12秒前
aktuell完成签到,获得积分10
12秒前
12秒前
ANG发布了新的文献求助10
12秒前
Lucas应助2116564采纳,获得10
12秒前
量子星尘发布了新的文献求助10
13秒前
清辉夜凝发布了新的文献求助10
13秒前
可爱的函函应助Shrine采纳,获得10
14秒前
recovery应助Aprilapple采纳,获得10
15秒前
baonali发布了新的文献求助10
16秒前
123发布了新的文献求助30
16秒前
小晓发布了新的文献求助10
16秒前
科研通AI2S应助Andema采纳,获得10
16秒前
18秒前
18秒前
21秒前
21秒前
23秒前
李健应助假发君采纳,获得10
24秒前
25秒前
KIORking发布了新的文献求助10
25秒前
落忆发布了新的文献求助10
25秒前
tengfei完成签到 ,获得积分10
25秒前
yinle发布了新的文献求助10
26秒前
26秒前
Ma发布了新的文献求助10
26秒前
26秒前
shensiang完成签到,获得积分10
27秒前
2116564发布了新的文献求助10
27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 3989444
求助须知:如何正确求助?哪些是违规求助? 3531531
关于积分的说明 11254250
捐赠科研通 3270191
什么是DOI,文献DOI怎么找? 1804901
邀请新用户注册赠送积分活动 882105
科研通“疑难数据库(出版商)”最低求助积分说明 809174