Synthesis, characterization and application of a novel chemical sand-fixing agent-poly(aspartic acid) and its composites

A novel sand-fixing agent-poly(aspartic acid) and its composites were synthesized to improve sand particles compressive strength and anti-wind erosion properties. The relationship between the concentration of sand-fixing agent and the sand-fixing properties was studied by three kinds of aging tests. Some composites were choose to improve the sand-fixing property and the composition of 40% xanthan gum and 60% ethyl cellulose were chosen to compare sand-fixing property with lignosulfonate. The results showed that the sand-fixing and water-retaining properties of xanthan gum and ethyl cellulose composites were better than that of lignosulfonate. The biodegradability experiment showed that the PASP and its composites were environment-friendly products and the field test showed that the PASP composites could improve wind erosion disturbance.     

Simultaneous adsorption and immobilization of As and Cd by birnessite-loaded biochar in water and soil

Environmental Science and Pollution Research - A novel biochar was prepared by loading birnessite to improve its capability to simultaneously adsorb As(III), As(V), and Cd(II) in water and soil....     

壳聚糖季铵盐的合成及其絮凝性能

对壳聚糖进行季铵化改性制得壳聚糖季铵盐,用于味精废水的絮凝实验证明了其絮凝性能较壳聚糖好,投药量低,ｐＨ值适用范围宽,絮体沉降快且含水率低,是一种具有良好反应活性的高分子絮凝剂。     

Status and trends of terrestrial arthropod abundance and diversity in the North Atlantic region of the Arctic

Ambio - The Circumpolar Biodiversity Monitoring Programme (CBMP) provides an opportunity to improve our knowledge of Arctic arthropod diversity, but initial baseline studies are required to...     

Semi-solid anaerobic co-digestion of source-separated fecal slag and food waste: focusing on methane production,ecological risk assessment,and quality evaluation as fertilizer

Environmental Science and Pollution Research - Toilet revolution is driven by the urgent need for solutions to improve sanitation and access to high-quality organic fertilizer for rural areas,...     

Performance improvement of modified tubular solar still by employing vertical and inclined pin fins and external condenser: an experimental study

Environmental Science and Pollution Research - The current experimental work aims to improve an accumulative yield of tubular solar distillers. This was achieved by utilizing the pin fins and...     

Green manure plants for remediation of soils polluted by metals and metalloids: Ecotoxicity and human bioavailability assessment

Borage, white mustard and phacelia, green manure plants currently used in agriculture to improve soil properties were cultivated for 10 wk on various polluted soils with metal(loid) concentrations representative of urban brownfields or polluted kitchen gardens. Metal(loid) bioavailability and ecotoxicity were measured in relation to soil characteristics before and after treatment. All the plants efficiently grow on the various polluted soils. But borage and mustard only are able to modify the soil characteristics and metal(loid) impact: soil respiration increased while ecotoxicity, bioaccessible lead and total metal(loid) quantities in soils can be decreased respectively by phytostabilization and phytoextraction mechanisms. These two plants could therefore be used for urban polluted soil refunctionalization. However, plant efficiency to improve soil quality strongly depends on soil characteristics.     

Development of nanoemulsion from Vitex negundo L. essential oil and their efficacy of antioxidant,antimicrobial and larvicidal activities (Aedes aegypti L.)

Environmental Science and Pollution Research - It is believed that nanoemulsions were emerged as a promising candidate to improve the qualities of natural essential oil towards antimicrobial and...     

Measurement, Collaborative Learning and Research for Sustainable Use of Ecosystem Services: Landscape Concepts and Europe as Laboratory

Policies at multiple levels pronounce the need to encompass both social and ecological systems in governance and management of natural capital in terms of resources and ecosystems. One approach to knowledge production and learning about landscapes as social–ecological systems is to compare multiple case studies consisting of large spaces and places. We first review the landscape concepts’ biophysical, anthropogenic, and intangible dimensions. Second, we exemplify how the different landscape concepts can be used to derive measurable variables for different sustainability indicators. Third, we review gradients in the three dimensions of the term landscape on the European continent, and propose to use them for the stratification of multiple case studies of social–ecological systems. We stress the benefits of the landscape concepts to measure sustainability, and how this can improve collaborative learning about development toward sustainability in social–ecological systems. Finally, analyses of multiple landscapes improve the understanding of context for governance and management.     

Soil-plant nitrogen isotope composition and nitrogen cycling after biochar applications

Environmental Science and Pollution Research - Biochar has strong potential to improve nitrogen (N) use efficiency in both agricultural and horticultural systems. Biochar is usually co-applied with...     

Does innovation in ocean energy generations-related technologies in G7 countries reduce carbon dioxide emissions? Role of international collaboration in green technology development and commercial and monetary policies

Environmental Science and Pollution Research - Recognizing that innovation in renewable energy generation is an effective way to improve sustainable energy generation, the government and industries...     

Novel environmental factors affecting microbial responses and physicochemical properties by sequentially applied biochar in black soil

Environmental Science and Pollution Research - Biochar was increasingly used in agriculture soil amendment and has received widespread attention due to its potential to improve soil...     

超声波强化给水污泥沉降和脱水性能的研究

就超声波强化给水污泥沉降和脱水性能进行了研究.通过对SV、比阻和滤饼含水率等指标的分析发现,短时间的超声预处理可以明显改善污泥的沉降和脱水性能,且低频(25 kHz)比高频(147.9 kHz)时效果更好.当超声波声密度0.25 W/mL,超声时间3 s时,污泥滤饼含水率比原污泥下降4.7%.最佳超声波声密度0.45 W/mL.短时间超声条件下,超声波与絮凝剂的联用可以进一步降低污泥滤饼含水率,且达到相同滤饼含水率时可减少絮凝剂用量约80%,投资费用大大减小.超声波可以取代絮凝剂促进污泥的沉降性能.     

超声波强化给水污泥沉降和脱水性能的研究

就超声波强化给水污泥沉降和脱水性能进行了研究.通过对SV、比阻和滤饼含水率等指标的分析发现,短时间的超声预处理可以明显改善污泥的沉降和脱水性能,且低频（25 kHz）比高频（147.9 kHz）时效果更好.当超声波声密度0.25 W/mL,超声时间3 s时,污泥滤饼含水率比原污泥下降4.7%.最佳超声波声密度0.45 W/mL.短时间超声条件下,超声波与絮凝剂的联用可以进一步降低污泥滤饼含水率,且达到相同滤饼含水率时可减少絮凝剂用量约80%,投资费用大大减小.超声波可以取代絮凝剂促进污泥的沉降性能.     

Spatio-temporal characteristics of adaptability between crop water requirements for summer maize and rainfall in Henan Province,China

Environmental Science and Pollution Research - It is very important to master the rainfall utilization efficiency and spatial-temporal distribution characteristics in order to improve the...     

Ecological literacy and beyond: Problem-based learning for future professionals

Ecological science contributes to solving a broad range of environmental problems. However, lack of ecological literacy in practice often limits application of this knowledge. In this paper, we highlight a critical but often overlooked demand on ecological literacy: to enable professionals of various careers to apply scientific knowledge when faced with environmental problems. Current university courses on ecology often fail to persuade students that ecological science provides important tools for environmental problem solving. We propose problem-based learning to improve the understanding of ecological science and its usefulness for real-world environmental issues that professionals in careers as diverse as engineering, public health, architecture, social sciences, or management will address. Courses should set clear learning objectives for cognitive skills they expect students to acquire. Thus, professionals in different fields will be enabled to improve environmental decision-making processes and to participate effectively in multidisciplinary work groups charged with tackling environmental issues.     

The role of halophytic nanoparticles towards the remediation of degraded and saline agricultural lands

Environmental Science and Pollution Research - Salinity is one of the major causes of abiotic stress that leads to a reduction in crop yield. One strategy to alleviate and improve crop yield is to...     

Green research and development activities and SO2 intensity: an analysis for China

Environmental Science and Pollution Research - Carrying out domestic research and development (R&D) activities can improve environmental performance. However, extant studies have not...     

Effect of chloride ions on the simultaneous electrodialysis and electrochemical oxidation of mature landfill leachate

Environmental Science and Pollution Research - An attempt has been made to improve the treatment efficiency of mature landfill leachate prior to the existing biological treatment. In this study,...     

Synergetic effect of complex soil amendments to improve soil quality and alleviate toxicity of heavy metal(loid)s in contaminated arable soil: toward securing crop food safety and productivity

Environmental Science and Pollution Research - Globally, various types of soil amendments have been used to improve the fertility and quality of soils in agricultural lands. In heavy metal(loid)...