Behavior characteristics of phosphorus and capping effect of microbubble flotation to control phosphorus release in the benthic sediment

Author:

Choi Yong-Ho1ORCID,Jeong Yong-Hoon1,Jang Min-Ho1,Kwak Dong-Heui12ORCID

Affiliation:

1. a Department of Bio-Convergence Science, Jeonbuk National University, 567 Baekjedae-ro, Deokjin-gu, Jeonju Jeonbuk 54896, Republic of Korea

2. b Department of Bio-Active Material Science, Jeonbuk National University, 567 Baekjedae-ro, Deokjin-gu, Jeonju Jeonbuk 54896, Republic of Korea

Abstract

Abstract Microbubbles were applied to remove phosphorus (P) and improve environmental water conditions on the surface of the benthic sediment in a eutrophic lake. Microbubble flotation (MF) was used to remove P in a laboratory-scale experiment device from the benthic sediment and overlying water field samples. The results of P tracing observation for MF treatment, which were identified based on the mass balance, showed P accumulated at a higher concentration in the floated scum than in the deposited sludge. Furthermore, while the amount of soluble P separated was insignificant, the removal efficiency of soluble P in the floated scum was higher than total P. As an additional effect, P release was suppressed by the injection of microbubbles, which reduced anaerobicization and improved environmental conditions in the overlying water of the lake. We also confirmed that the sludge that settled after flotation separation caused capping, which restrained P release by forming a layer on the surface of the sediment. The direct P flotation separation, provision of oxygen by injected microbubbles, and capping effect of re-deposited sludge are advantages associated with MF, and our results show that field application studies are warranted.

Funder

National Research Foundation of Korea

Publisher

IWA Publishing

Subject

Water Science and Technology

Reference26 articles.

1. Assessment and Remediation of Contaminated Sediments (ARCS) 1994 program remediation guidance document, Great lakes national program, US EPA (EPA 905-B94-003), Chicago, Illinois.

2. Flotation and Behavior Characteristics Estimation of Phosphorus in Sediments of Lake Using Micro-bubble

3. Principles and applications of dissolved air flotation

4. Diffusion of PAH and PCB from contaminated sediments with and without mineral capping; measurement and modelling

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3