The effectiveness of spent coffee grounds and its biochar on the amelioration of heavy metals-contaminated water and soil using chemical and biological assessments

被引:103
作者
Kim, Min-Suk [1 ]
Min, Hyun-Gi [1 ]
Koo, Namin [2 ]
Park, Jeongsik [3 ]
Lee, Sang-Hwan [4 ]
Bak, Gwan-In [4 ]
Kim, Jeong-Gyu [1 ]
机构
[1] Korea Univ, Coll Life & Environm Sci, Div Environm Sci & Ecol Engn, Seoul 136713, South Korea
[2] Korea Forest Res Inst, Div Forest Soil & Water Conservat, Seoul 130712, South Korea
[3] Korea Testing & Res Inst, Environm Safety Team, Chem Environm Headquarter, Gimpo Si 415873, South Korea
[4] Mine Reclamat Corp, Technol Res Ctr, Cheonan Si 331800, South Korea
关键词
Acid mine drainage; Biochar; Phytotoxicity; Remediation evaluation; Trace elements; BIOMASS; RESIDUES; REMOVAL; WASTE; ACID; ADSORPTION; PYROLYSIS; EMISSIONS; AMENDMENT; PLANTS;
D O I
10.1016/j.jenvman.2014.07.001
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Spent coffee grounds (SCG) and charred spent coffee grounds (SCG-char) have been widely used to adsorb or to amend heavy metals that contaminate water or soil and their success is usually assessed by chemical analysis. In this work, the effects of SCG and SCG-char on metal-contaminated water and soil were evaluated using chemical and biological assessments; a phytotoxicity test using bok choy (Brassica campestris L. ssp. chinensis Jusl.) was conducted for the biological assessment. When SCG and SCG-char were applied to acid mine drainage, the heavy metal concentrations were decreased and the pH was increased. However, for SCG, the phytotoxicity increased because a massive amount of dissolved organic carbon was released from SCG. In contrast, SCG-char did not exhibit this phenomenon because any easily released organic matter was removed during pyrolysis. While the bioavailable heavy metal content decreased in soils treated with SCG or SCG-char, the phytotoxicity only rose after SCG treatment. According to our statistical methodology, bioavailable Pb, Cu and As, as well as the electrical conductivity representing an increase in organic content, affected the phytotoxicity of soil. Therefore, applying SCG during environment remediation requires careful biological assessments and evaluations of the efficiency of this remediation technology. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:124 / 130
页数:7
相关论文
共 48 条
[1]   Heavy metals in the dump of an abandoned mine in Galicia (NW Spain) and in the spontaneously occurring vegetation [J].
Alvarez, E ;
Marcos, MLF ;
Vaamonde, C ;
Fernández-Sanjurjo, MJ .
SCIENCE OF THE TOTAL ENVIRONMENT, 2003, 313 (1-3) :185-197
[2]  
[Anonymous], 2006, OECD guideline for the testing of chemicals. Guideline 201: freshwater Alga and cyanobacteria, growth inhibition test
[3]  
[Anonymous], 2012, BIOGEOSCI DISCUSS, DOI DOI 10.5194/BGD-9-151-2012
[4]  
[Anonymous], 2003, Interaction effects in multiple regression
[5]  
[Anonymous], ECOTIX ENV SAFE
[6]  
[Anonymous], 1995, ISO 11466
[7]   A review of potentially low-cost sorbents for heavy metals [J].
Bailey, SE ;
Olin, TJ ;
Bricka, RM ;
Adrian, DD .
WATER RESEARCH, 1999, 33 (11) :2469-2479
[8]   Removal of heavy metals by adsorbent prepared from pyrolyzed coffee residues and clay [J].
Boonamnuayvitaya, V ;
Chaiya, CY ;
Tanthapanichakoon, W ;
Jarudilokkul, S .
SEPARATION AND PURIFICATION TECHNOLOGY, 2004, 35 (01) :11-22
[10]  
Bremner J., 1996, Part 3-Chemical Methods, P1085