Assessment of phytoremediation potential of native plants during the reclamation of an area affected by sewage sludge
Assessment of phytoremediation potential of native plants during the reclamation of an area affected by sewage sludge
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DOI：
10.1016/j.ecoleng.2014.03.029
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发表时间：
2014-08
影响因子：
3.8
通讯作者：
N. Suchkova;I. Tsiripidis;D. Alifragkis;J. Ganoulis;E. Darakas;T. Sawidis
中科院分区：
文献类型：
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作者：
N. Suchkova;I. Tsiripidis;D. Alifragkis;J. Ganoulis;E. Darakas;T. Sawidis
本文研究了污水污泥沉积物中植物的自然分布及其对营养物的吸收和生物浓缩因子（BCF）对污泥资源化的贡献。主要研究开始于2012年3月，对调查地点第一个生长期（2012年6月）自然生长的植物进行了鉴定和记录。根据它们的发生和覆盖样本从10个种，即白花苋（yamanthus albusL）。,苋属viridisL。, Cardaria draba (l)Desv。土荆芥albumL。、香附子(l)珀耳斯。莎草rotundusL。, Lolium perenneL。, Lycopersicon esculentumMill。,锦葵parvifloraL。,马齿苋oleraceaL。，收集作化学分析。测定了大量元素（Ca、Mg、K、P），微量元素（Mn、Cu、Zn、Fe、Cr、Ni、Pb）和Na。结果表明，植物吸收大量营养物质的速度相对较高，在某些情况下，污泥中过量的营养物质浓度降低了95%。与超积累植物相比，微量元素的去除速率较低，这可能与它们在基质中的生物利用度降低有关，但大多数物种和大多数微量元素的BCF都大于1，表明植物具有植物提取能力。结果表明，所选择的本地植物不仅能耐受恶劣的环境条件，而且通过各种过程对受污泥影响的场地的复垦做出了贡献。
In this research paper the natural establishment of plants and their contribution to the reclamation of sewage sludge deposits through their uptake of nutrients and their bioconcentration factor (BCF) were investigated and assessed. The main research started in March 2012, and the plants growing naturally at the site under investigation during the first growing season (June 2012) were identified and recorded. On the basis of their occurrence and cover samples from ten species, namelyAmaranthus albusL.,Amaranthus viridisL.,Cardaria draba(L.) Desv.,Chenopodium albumL.,Cynodon dactylon(L.) Pers.,Cyperus rotundusL.,Lolium perenneL.,Lycopersicon esculentumMill.,Malva parvifloraL.,Portulaca oleraceaL., were collected for chemical analyses. Macronutrients (Ca, Mg, K, P), trace elements (Mn, Cu, Zn, Fe, Cr, Ni, Pb) and Na were measured. The results showed that plants took up macronutrients at relatively high rates, in some cases reducing their excessive levels of concentration in the sludge by as much as 95%. Trace elements were removed at a lower rate compared to hyperaccumulators, this was possibly affected by their reduced bioavailability in the substrate, but the BCF, which was greater than one for most of the species and for most of the trace elements, indicated that the plants were capable of phytoextraction. It was concluded that selected native plants are not only tolerant to adverse environmental conditions, but also contribute by various processes to the reclamation of sites affected by sewage sludge.