Results 1 to 10 of about 14,449 (111)
Gongye shui chuli, 2023 环境中重金属主要来源于工业废水的排放，如何经济有效地去除工业废水中的重金属是水处理领域的难点。重金属抗性菌比通常微生物具有更高的重金属抵抗能力，可以在重金属胁迫的情况下生长，这为重金属废水的微生物处理提供了新的思路。但是，目前人们对重金属抗性微生物的特性和应用仍然知之甚少。基于此，综述了重金属抗性菌的发现过程及其分离状况，对重金属抗性菌抗性能力的评价方法进行了介绍，着重分析了重金属抗性菌抗性机制中可作为去除重金属离子理论基础的胞外吸附与胞内累积机制，并以集成电路板生产关键工艺，即化学机械研磨（CMP ...
王小雨, 黄小霞, 高磊
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Gongye shui chuli, 2023 针对燃煤电厂脱硫废水中存在多种重金属离子的水质特点，采用模拟废水研究了层状双金属氢氧化物（LDHs）对重金属的去除效果和去除机理。采用共沉淀法制备了弗里德尔盐（Fs）和钙矾石（Ett）2种LDHs重金属吸附剂，探究了其投加量、废水初始pH和废水中共存离子对重金属去除效果的影响，结合动力学研究，阐释了LDHs对重金属的吸附机理。结果表明：当Ett和Fs投加质量浓度分别为0.15、0.07 g/L时，模拟废水中Zn（Ⅱ）、Cd（Ⅱ）、Pb（Ⅱ）、Cr（Ⅵ）的去除率均可达90%以上；当废水初始pH＞5.0时 ...
刘亚鹏 +8 more
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Gongye shui chuli, 2022 面对水体中威胁人类健康的重金属污染，研制吸附效率高、成本低、绿色无污染且对多种重金属离子具有吸附效果的吸附剂是国内外学者共同努力的一个重要方向。层状双氢氧化物（LDHs）是一类具有较大比表面积和较高阴离子交换容量的层状结构化合物，在重金属废水处理方面具有潜在吸附优势。基于前人的研究，分别综述了部分层状双氢氧化物及其复合材料在处理废水中重金属阳离子、重金属阴离子及类金属离子方面的研究进展；在此基础上，总结了层状双氢氧化物及其复合材料在处理重金属废水过程中的作用机理。对开发研制高效、经济 ...
罗相萍 +4 more
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Gongye shui chuli, 2012 对具有去除重金属和浊度双重功效的高分子重金属絮凝剂近年来的研究进展进行了详细论述,并评述了此类絮凝剂对重金属废水的处理效果。在重金属废水处理中,使用高分子重金属絮凝剂可望实现简化操作单元、节约成本、回收重金属的目的,因而具有广阔的应用前景。
刁静茹
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Scientists’ warning on the global destruction of rock outcrop ecosystems
Conservation Biology, EarlyView.Abstract Rock outcrops are geological formations that harbor a highly specialized biota adapted to harsh environmental conditions that differ from their surrounding landscapes. They are globally distributed, especially in old, highly weathered landscapes, and can function as habitat islands containing high levels of endemism and distinct evolutionary ...
Luiza F. A. de Paula +19 more
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Assessing and strengthening community‐based coastal governance
Conservation Biology, EarlyView.Abstract Community‐based coastal governance is essential for biodiversity conservation and sustainable livelihoods, yet many communities continue to face significant challenges in establishing and sustaining effective governance systems. We sought to improve understanding of the current status of community‐based coastal governance across five countries
Mark Andrachuk +21 more
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Resource Substitution: Local Governments' Issue Attention and Policy Reinvention
Policy Studies Journal, EarlyView.ABSTRACT Research on policy reinvention, where a government modifies rather than replicates policy innovations introduced by other governments, has progressed significantly, but how it is influenced by the government's issue attention has not been thoroughly examined.
Yingxin Zhang, Yixue Yao, Kaifeng Yang
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Gongye shui chuli, 2005 重金属废水的排放带来了长期的环境污染。利用硫酸盐还原菌生物还原硫酸盐的过程中同时可将重金属化学沉淀为难溶金属硫化物而去除。文章对硫酸盐生物还原法去除重金属的原理、特点、影响因素和研究现状进行了阐述,从而说明该法去除重金属是可行和有效的,它对于处理重金属废水具有现实意义。
苏冰琴, 李亚新
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Gongye shui chuli, 2023 微塑料在水环境中能够吸附重金属污染物并作为重金属污染物的载体，在全球淡水系统和海洋系统中广泛传播，对全球水环境造成严重影响。因此，了解微塑料对重金属的吸附行为、机理以及吸附后对环境中生物的毒性影响十分必要。微塑料对重金属的吸附性能取决于微塑料本身的物理化学性质，如塑料类型、比表面积和结晶度等。此外，环境因素如pH、离子强度、溶解性有机质浓度和老化作用也会显著影响微塑料吸附重金属的能力，使得微塑料对重金属的吸附过程十分复杂。基于此，详细综述了微塑料对水环境中重金属吸附行为的最新研究进展 ...
张皓 +5 more
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Tracing change in the public perception of plants: insights from archives and social media in China
PLANTS, PEOPLE, PLANET, Volume 8, Issue 5, Page 1853-1871, September 2026.As urbanization accelerates, historic gardens serve as vital cultural treasures that offer spiritual and cultural support to the public. This study proposes an innovative approach that merges historical records from the Qing Dynasty with contemporary social media data to explore changes in public perceptions of these gardens.
Dong Xu +4 more
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