大气污染对呼吸系统疾病的影响——以河南省A市为例

文章将二氧化硫(SO2)、二氧化氮(NO2)、可吸入颗粒物(PM10)等主要污染物的监测浓度值与呼吸系统疾病(支气管炎、肺炎、哮喘)住院人数进行相关性分析,以探讨A市大气污染对呼吸系统疾病的影响。研究结果表明,二氧化氮(NO2)和可吸入颗粒物(PM10)对支气管炎住院人数有显著影响,可吸入颗粒物(PM10)还与哮喘住院人数有密切的关系,因此A市大气污染可能与呼吸系统疾病的环境病因有关。     

pH和温度对邻苯二甲酸二辛酯生物降解的影响研究

由于邻苯二甲酸酯类化合物的广泛应用,对环境造成了巨大的影响,因此对其的降解性研究刻不容缓。选取邻苯二甲酸酯类中的一种化合物——邻苯二甲酸二辛酯作为受试物,运用好氧生物降解方法,把驯养后的污水处理厂的活性污泥对其进行降解试验,通过对pH值和温度的调节,研究温度在15℃～45℃,pH值在5.0～9.0时邻苯二甲酸二辛酯(DOP)的降解情况,结果表明,好氧生物降解DOP的适宜温度为30℃～35℃,适宜pH值为8.0。     

江苏省生态工业园指标体系研究

文章在分析了国内现有的生态工业园相关指标体系的基础上,结合江苏省工业园区的特点,提出了江苏省生态工业园区指标体系。指标体系包括经济发展、物质减量与循环、污染控制、园区管理四个方面,共27项指标构成的指标体系,其中约束性指标25项,参考性指标2项。这为江苏省级生态工业园区的创建和考核提供了依据。     

Anaerobic digestion and recycling of kitchen waste: a review

About 1.6 billion tons of food are wasted worldwide annually, calling for advanced methods to recycle food waste into energy and materials. Anaerobic digestion of kitchen waste allows the efficient recovery of energy, and induces low-carbon emissions. Nonetheless, digestion stability and biogas production are variables, due to dietary habits and seasonal diet variations that modify the components of kitchen waste. Another challenge is the recycling of the digestate, which could be partly solved by more efficient reactors of anaerobic digestion. Here, we review the bottlenecks of anaerobic digestion treatment of kitchen waste, with focus on components inhibition, and energy recovery from biogas slurry and residue. We provide rules for the optimal treatment of the organic fraction of kitchen waste, and guidelines to upgrade the anaerobic digestion processes. We propose a strategy using an anaerobic dynamic membrane bioreactor to improve anaerobic digestion of kitchen waste, and a model for the complete transformation and recycling of kitchen waste, based on component properties.

     

An investigation on the promoting effect of Pr modification on SO2 resistance over MnOx catalysts for selective reduction of NO with NH3

Environmental Science and Pollution Research - Pr-modified MnOx catalyst was synthesized through a facile co-precipitation process, and the results showed that MnPrOx catalyst exhibited much better...     

The effect and its critical window for ambient temperature and humidity in pregnancy on term low birth weight

Environmental Science and Pollution Research - As common meteorological factors in daily life, there is limited evidence for the effect of ambient temperature and humidity during pregnancy on the...     

Effect of Brown-Rotted Spruce as Lignin-Enriched Filler on the Properties of Reinforced Polyurethane Foam

Journal of Polymers and the Environment - The study investigated the effect of lignocellulosic biomass filler decayed by brown-rot fungi on the preparation and properties of polyurethane (PU) foam....     

碳质材料和溶解性有机质对沉积物中全氟化合物在摇蚊幼虫体内富集的影响

全氟化合物(PFASs)是一类具有疏水基团和亲水基团的新型污染物.目前,在环境条件对PFASs生物富集影响方面已开展了诸多研究,但有关碳质材料(CMs)和溶解性有机质(DOM)共存对PFASs在生物体内富集的影响还未见报道。为探讨这一问题,研究了沉积物-水体系中2种碳质材料木炭(W400)、多壁碳纳米管(MWCNT10)和4种DOM(丹宁酸、富里酸、蛋白胨和腐殖酸)对6种典型PFASs在摇蚊幼虫体内生物富集的影响。结果表明,暴露10 d后(已达到富集平衡状态),无论体系中是否存在CMs,添加1~50 mg C·L-1不同类型的DOM对PFASs在摇蚊幼虫体内生物富集的影响不显著。无论体系中是否存在DOM,添加CMs均能降低摇蚊幼虫体内PFASs的含量,且MWCNT10对PFASs生物富集的降低比例显著高于W400。与对照相比,添加0.4%的MWCNT10对摇蚊幼虫体内PFASs含量的降低比例为21%~56%,而同等添加量的W400对其降低比例均低于20%。这表明,在沉积物-水体系中,当CMs和DOM共存时,CMs是影响PFASs在摇蚊幼虫体内富集的主要因素,而少量DOM的引入对其影响不大。     

耐热石油烃降解混合菌的筛选及其群落结构分析

对克拉玛依采集的部分石油污染土壤进行了筛选,得到了5组石油烃高效降解混合菌,其中混合菌KL9-1在45℃的条件下,通过7 d的降解,稀油的降解率达到43.27%,稠油的降解率达到20.09%。混合菌KL9-1经过多次分离纯化后,获得3株具有石油烃降解能力的优势单菌,3株单菌对稀油的降解率都在30%以上。结合分离单菌株的形态、生理生化特征和16S rDNA基因序列的分析结果,初步鉴定KL9-1-1为Pseudomonas putida,KL9-1-2和KL9-1-3为Pseudomonas sp.。