超富集植物研究新进展

综述了超富集植物概念和判断标准的演变过程.在植物修复中，生物学特性、土壤环境和营养状况都影响到超富集植物对重金属的富集效率，还要克服超富集植物的地域性、生物量小等缺点.我国需要发现更多的资源，加强驯化、栽培和育种等方面的工作，才能为污染土壤的植物修复提供有力保障.     

超富集植物研究新进展

综述了超富集植物概念和判断标准的演变过程.在植物修复中,生物学特性、土壤环境和营养状况都影响到超富集植物对重金属的富集效率,还要克服超富集植物的地域性、生物量小等缺点.我国需要发现更多的资源,加强驯化、栽培和育种等方面的工作,才能为污染土壤的植物修复提供有力保障.     

植物修复多氯联苯污染土壤的研究进展

多氯联苯(PCBs)是环境中广泛存在的一类持久性有机污染物,其环境风险不容忽视.本文对PCBs的性质,植物修复PCBs污染的国内外研究现状,植物修复PCBs污染的机理及影响因素进行了综述,同时对该领域的研究方向进行了展望.     

植物修复多氯联苯污染土壤的研究进展

多氯联苯(PCBs)是环境中广泛存在的一类持久性有机污染物,其环境风险不容忽视.本文对PCBs的性质,植物修复PCBs污染的国内外研究现状,植物修复PCBs污染的机理及影响因素进行了综述,同时对该领域的研究方向进行了展望.     

土壤重金属污染及植物修复

论述了土壤重金属污染的现状,从土壤重金属对土壤微生物和土壤酶以及对农作物等方面的危害进行了阐述;对超富集植物的概念与特征和重金属污染土壤的植物修复机理也进行了讨论.     

金属As对土壤的污染及常用修复技术

金属As污染是土壤中重金属污染物之一。金属As对土壤污染的常用修复技术有施加拮剂修复、施加沉淀固化剂修复、植物修复、改变农业耕作管理制度修复、水洗土壤修复、太阳暴光晒修复、多种修复技术结合应用等七种。     

国内土壤重金属污染现状及治理修复

概括了中国土壤重金属污染的现状、土壤重金属污染的治理和修复方法.工业污水、工业废渣、城市垃圾、工业废弃物堆放及大气沉降是土壤重金属污染物的主要来源.目前中国耕地约1/5被重金属污染.随着科学技术的进步和社会经济的发展土壤重金属污染的治理修复技术也越来越先进,方式方法多种多样,主要包括工程物理化学法、土壤农化调控法和生物修复法,前两者是常用的处理方法,生物修复法是目前非常有前景的一种处理方法.尽管治理技术日益先进,预防重金属污染也非常重要,只有防治结合,才有可能从根本上解决土壤重金属污染这一世界性环境问题.     

矿区土壤重金属污染的修复技术研究

重金属污染是当今土壤污染中,污染面积最广、危害最大的环境问题之一。本文介绍了当前治理土壤重金属污染的修复技术,为土壤重金属污染综合治理与修复提出了新的思路。     

Role of soil rhizobacteria in phytoremediation of heavy metal contaminated soils

Heavy metal pollution of soil is a significant environmental problem and has its negative impact on human health and agriculture. Rhizosphere, as an important interface of soil and plant, plays a significant role in phytoremediation of contaminated soil by heavy metals, in which, microbial populations are known to affect heavy metal mobility and availability to the plant through release of chelating agents, acidification, phosphate solubilization and redox changes, and therefore, have potential to enhance phytoremediation processes. Phytoremediation strategies with appropriate heavy metal-adapted rhizobacteria have re-ceived more and more attention. This article paper reviews some recent advances in effect and significance of rhizobacteria in phytoremediation of heavy metal contaminated soils. There is also a need to improve our understanding of the mechanisms in-volved in the transfer and mobilization of heavy metals by rhizobacteria and to conduct research on the selection of microbial isolates from rhizosphere of plants growing on heavy metal contaminated soils for specific restoration programmes.     

Review: Role of soil rhizobacteria in phytoremediation of heavy metal contaminated soils

Heavy metal pollution of soil is a significant environmental problem and has its negative impact on human health and agriculture. Rhizosphere, as an important interface of soil and plant, plays a significant role in phytoremediation of contaminated soil by heavy metals, in which, microbial populations are known to affect heavy metal mobility and availability to the plant through release of chelating agents, acidification, phosphate solubilization and redox changes, and therefore, have potential to enhance phytoremediation processes. Phytoremediation strategies with appropriate heavy metal-adapted rhizobacteria have received more and more attention. This article paper reviews some recent advances in effect and significance of rhizobacteria in phytoremediation of heavy metal contaminated soils. There is also a need to improve our understanding of the mechanisms involved in the transfer and mobilization of heavy metals by rhizobacteria and to conduct research on the selection of microbial isolates from rhizosphere of plants growing on heavy metal contaminated soils for specific restoration programmes.     

微生物修复重金属污染土壤探究

利用微生物对重金属的钝化作用,制备微生物钝化剂并应用于重金属污染土壤的治理。通过研究重金属污染土壤中微生物的性质,筛选出能有效处理土壤中重金属污染的优良菌种CQ7与FQ2;对筛选出的菌株进行表征,并测定其生长曲线,鉴定FQ2为革兰氏阴性杆菌。进一步对筛选出的菌种进行理化条件测定,测定得CQ7与FQ2的最适生长条件均为p H=5、转速180 r/min、温度25℃。经金属耐受和吸附实验,选定FQ2为工程菌,测序确定其为沙雷氏菌属(Serratia marcuscens)。将筛选所得菌种与相应理化条件相结合,制备微生物钝化剂,设计自动化重金属污染土壤修复设备,对其应用前景进行了初步规划。     

地下水及土壤污染的生物修复技术研究简介

利用生物修复技术治理污染的地下水及土壤以其安全、简便、无二次污染的优点而得到人们的广泛关注。本概述了生物修复技术在污染的地下水及土壤的研究及应用状况，并对其发展前景做出展望。     

转基因植物在植物修复中的应用及安全性

植物修复技术的核心是对植物能忍耐和超量积累化学元素的生物学特性的利用,基因工程技术应用于植物修复,为污染土壤植物修复的普遍推广提供了更大的可能。本文综述了转基因植物在植物修复中的作用及研究进展情况,指出了存在的问题和今后的发展方向。     

Mycorrhizoremediation an enhanced form of phytoremediation

Study of plant roots and the diversity of soil micro biota, such as bacteria, fungi and microfauna associated with them, is important for understanding the ecological complexities between diverse plants, microbes, soil and climates and their role in phytoremediation of contaminated soils. The arbuscular mycorrhizal fungi （AMF） are universal and ubiquitous rhizosphere mi- croflora forming symbiosis with plant roots and acting as biofertilizers, bioprotactants, and biodegraders. In addition to AMF, soils also contain various antagonistic and beneficial bacteria such as root pathogens, plant growth promoting rhizobacteria including free-living and symbiotic N-fixers, and mycorrhiza helping bacteria. Their potential role in phytoremediation of heavy metal （HM） contaminated soils and water is becoming evident although there is need to completely understand the ecological complexities of the plant-microbe-soil interactions and their better exploitation as consortia in remediation strategies employed for contaminated soils. These multitrophic root microbial associations deserve multi-disciplinary investigations using molecular, biochemical, and physiological techniques. Ecosystem restoration of heavy metal contaminated soils practices need to incorporate microbial biotechnology research and development. This review highlights the ecological complexity and diversity of plant-microbe-soil combinations, particularly AM and provides an overview on the recent developments in this area. It also discusses the role AMF play in phytorestoration of HM contaminated soils, i.e. mycorrhizoremediation.     

电化学制备高铁酸钾用于强化电动修复苯酚污染

研究电化学方法制备高铁酸钾,通过单因素实验确定最佳工艺条件为:电解液KOH浓度16 mol/L,电解时间为6 h,反应温度为65 ℃,阳极表观电流密度为50 A/m²,制得高铁酸钾的浓度可达5.72 mmol/L。对高铁酸钾强化电动修复技术去除土壤中的苯酚进行初探,结果表明该技术可以大幅度提高苯酚污染的修复效能,在反应120 h后,苯酚的去除率可达到90%以上,而且产生的Fe(OH)₃固体无毒无害,不会对环境造成二次污染。