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Quantification and Characterization of Solid Waste in Alkalakla Administrative Unit, Khartoum State-Sudan 喀土穆州-苏丹阿卡拉行政单位固体废物的量化和表征
Pub Date : 2019-01-01 DOI: 10.35248/2252-5211.19.9.364
A. A. Elzaki, B. Elhassan
Solid waste generation is an outcome of human activities, poor solid waste management lead to serious public health problems. Quantification and characterization of solid waste components consider an important step in solid waste management procedures. A cross-sectional descriptive study was conducted in Alkalakla Administrative Unit to determine solid waste per capita generation rate and identify solid waste compositions. Considering seasonal variations and socio-economic class, World Health Organization (WHO) and California Integrated Waste Management Board (CIWMB) procedures for solid waste survey were adopted in sampling procedure and solid waste segregation. Data were collected and analyzed three times in 2013 (January, May, and August). The average weight of solid waste generated in Alkalakla Administrative Unit, taking into account all three seasons, was 0.401 kg/ capita/day, and accordingly estimated annual amount of solid waste was (36241.6 ton). There was negative moderate correlation between family size and solid waste per capita generation rate (r=-0.449, p value <0.001). Analysis of solid waste component shows that food remains accounts for the largest proportion (37%), followed by earth materials (20.5%) and plastic (13%). 3.77% of solid waste was hazardous materials. Ash and dung represented the lowest percentage (0.31%) and (0.11%) respectively. The average of solid waste per capita generation rate across the seasons and neighborhoods, were similar to the average weight estimated by Eastern Mediterranean Regional Office (EMRO), while it had significant differences from the average estimated by Khartoum State Cleaning Corporation. Statistically there were seasonal variations in solid waste generation; however there were no significant differences between neighborhoods. Study findings have significant economic prospective in solid waste management particular high percentages of organic components and low density of solid waste.
固体废物的产生是人类活动的结果,固体废物管理不善导致严重的公共卫生问题。固体废物成分的量化和表征是固体废物管理程序中的一个重要步骤。在alkakla行政单位进行了横断面描述性研究,以确定人均固体废物产生率和确定固体废物组成。考虑到季节变化和社会经济阶层,在抽样程序和固体废物分类中采用了世界卫生组织(世卫组织)和加州综合废物管理委员会的固体废物调查程序。2013年(1月、5月和8月)进行了三次数据收集和分析。考虑到三个季节,阿克拉克拉行政单元产生的固体废物平均重量为0.401 kg/人均/天,据此估计每年产生的固体废物量为(36241.6吨)。家庭规模与人均固体废物产生率呈负相关(r=-0.449, p值<0.001)。固体废物成分分析显示,食物残渣所占比例最大(37%),其次是土料(20.5%)和塑料(13%)。3.77%的固体废物为有害物质。灰分和粪便所占比例最低,分别为0.31%和0.11%。各个季节和街区的人均固体废物产生率平均值与东地中海区域办事处(EMRO)估计的平均重量相似,而与喀土穆国家清洁公司估计的平均重量有显著差异。在统计上,固体废物产生有季节变化;然而,邻里之间没有显著差异。研究结果在固体废物管理方面具有重要的经济前景,特别是高有机成分百分比和低密度固体废物。
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引用次数: 1
Adsorptive Removal of Synthetic Dye Effluent Using Sago Waste as Low Cost Adsorbent 西米废渣作为低成本吸附剂对合成染料废水的吸附去除
Pub Date : 2018-06-22 DOI: 10.4172/2252-5211.1000344
M. Karthika, M. Vasuki
Agricultural waste (Sago waste) used as low-cost adsorbent for the removal of synthetic dye effluent from aqueous solution by batch adsorption technique. The various parameters that influence in this adsorption process such as contact time, initial dye concentration, adsorbent dosage, temperature, pH, agitation speed and desorption studies. The experimental data were analysed using Langmuir isotherm model. Kinetic data well fitted for pseudosecond order model. Thermodynamic parameters have also been calculated. The sago waste was characterized by SEM and FT-IR studies. The low-cost adsorbent was found to be efficient for the dye removal process.
以农业废弃物(西米废弃物)为低成本吸附剂,采用间歇吸附法去除水中合成染料废水。影响吸附过程的各种参数,如接触时间、初始染料浓度、吸附剂用量、温度、pH、搅拌速度和解吸研究。采用Langmuir等温线模型对实验数据进行了分析。动力学数据很好地拟合了伪二阶模型。热力学参数也进行了计算。利用扫描电镜(SEM)和红外光谱(FT-IR)对西米废弃物进行了表征。这种低成本的吸附剂对染料的去除是有效的。
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引用次数: 7
Responsible Environmental Behaviour: An Observational Study of Packaging of Household Generated Waste for Disposal in Port Harcourt, Nigeria 负责任的环境行为:对尼日利亚哈科特港家庭产生的废物进行包装处理的观察研究
Pub Date : 2018-05-09 DOI: 10.4172/2252-5211.1000339
R. Akpofure
Improper waste disposal by one individual affects the entire citizenry. Government had advocated for the proper packaging of domestic waste at the household levels for the purposes of protecting the waste material being release into the environment especially during transit and for ease of collection of waste material especially at the waste collection centres. This paper assessed the practice of packaging household generated waste for disposal at Government designated waste collection centres. An observational (with non-participation) method was adopted. A total of 854 observations were made within the study period. A score of 100 marks was alloted to correct waste disposal practice and wrong waste disposal practices was given a score of 0 marks. Findings indicate that the behaviour of individuals to always properly package their household generated waste for disposal at designated collection points/centers are low. This study recommended increased awareness in creating positive environmental behaviour amongst citizens.
一个人的不当废物处理会影响到全体公民。政府提倡在家庭一级对家庭废物进行适当包装,以保护废物,特别是在运输过程中排放到环境中的废物,并便于废物收集,特别是在废物收集中心收集废物。本文评估了将家庭产生的废物包装后,交由政府指定的废物收集中心处置的做法。采用观察(不参与)法。在研究期间共进行了854次观察。正确的垃圾处理方式打100分,错误的垃圾处理方式打0分。调查结果显示,很少有个人会妥善包装家居废物,以便在指定的收集点/中心处置。这项研究建议提高市民在创造积极环保行为方面的意识。
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引用次数: 3
Bacteriological Treatment of Waste Water From Paint Industry Using Moringa oleifera Seed 辣木籽对涂料工业废水的细菌处理研究
Pub Date : 2018-05-08 DOI: 10.4172/2252-5211.1000337
Maduabuchi Mn
Wastewater treatments using conventional physical and chemical methods are normally hampered by high cost and causes side effect to human’s health and the environment. Because of these problems, the use of natural coagulants for wastewater treatment has been adopted. However, lack of knowledge on the exact nature and mechanism on how these substances work made them less likely to compete with conventional treatments. In this study, low cost and highly available natural materials was used for the treatment of paint industry effluent, the aim is to use natural product such as Moringa oleifera seed to replace chemical coagulants currently used for wastewater treatment from paint industry. Moringa oleifera seed was grounded into powdered form, the seed samples at different concentration in mg/l (0.2, 0.4, 0.6, 0.8, and 1.0) each was made into a suspension and introduced into 2l each of the paint wastewater. The paint wastewater samples was stirred and allowed to settle and observed after 0 hr, 1 hr, 3 hrs, 24 hrs, 72 hrs, 168 hrs, and 337 hrs. From the results, Moringa oleifera seed tends to purify the paint wastewater at 72 hrs. It can therefore be recommended for the bacteriological treatment of wastewater from paint industry.
采用传统的物理和化学方法处理废水,成本高,对人体健康和环境造成不良影响。由于存在这些问题,人们采用天然混凝剂进行废水处理。然而,由于缺乏对这些物质的确切性质和作用机制的了解,它们不太可能与传统疗法竞争。本研究采用低成本、高可利用性的天然材料处理涂料工业废水,目的是用天然产物如辣木籽代替目前用于涂料工业废水处理的化学混凝剂。将辣木种子磨成粉末,将不同浓度(0.2、0.4、0.6、0.8、1.0)的辣木种子样品制成悬浮液,分别加入到各2l的涂料废水中。将涂料废水样品搅拌,静置0小时、1小时、3小时、24小时、72小时、168小时、337小时后进行观察。结果表明,辣木籽在72 h时对油漆废水有较好的净化作用。因此,它可以推荐用于油漆工业废水的细菌处理。
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引用次数: 3
Evaluation of the Metal Content and Bacteriological Parameters of Selected Borehole Water Sources in Abakaliki, Nigeria 尼日利亚Abakaliki选定钻孔水源金属含量及细菌参数评价
Pub Date : 2018-05-08 DOI: 10.4172/2252-5211.1000338
I. Chidinma, I. Ifeanyichukwu, N. Emmanuel, A. Monique, Ejikeugwu Chika
The quality of potable water is affected by several natural and human activities including but not limited to pollution, natural disasters, climate change, urbanization and mining. Poor water quality adversely affects human health, and it is important to periodically be on the lookout for possible water contamination in our environment. This study investigated the metal content and bacteriological profiles of selected borehole water sources in Abakaliki, Nigeria. A total of 25 borehole water samples of 250 ml each were aseptically collected from selected borehole points (designated as Site A-E) in Abakaliki metropolis, Ebonyi State, Nigeria using pre-sterilized plastic containers; and each of the samples was were bacteriologically analyzed on selective culture media for the isolation and identification of bacteria that are of public health importance using standard microbiology identification techniques. The presence of trace metals was chemically determined in the borehole water samples using the atomic absorption spectrophotometer (AAS) [AA-7000]. The highest bacterial count in this study was 2.4 × 104 cfu/ml while the least bacteria count was 1.0 × 104 cfu/ml. The suspected bacterial organisms isolated and identified from the respective borehole water samples were Escherichia coli, Klebsiella species, Staphylococcus aureus and Pseudomonas aeruginosa. The metal content analysis using AAS showed that some of the borehole water samples contain some trace metals such as zinc (Zn), iron (Fe) and manganese (Mn). Aluminium (Al) and lead (Pb) were not detected in the borehole water samples analyzed in this study; and the trace metals detected were found to be within the accepted limit of trace metals for drinking water as specified by Standard Organization of Nigeria (SON) and World Health Organization (WHO). This study has presumptively reported the presence of some bacterial organisms of public health importance and some trace metals in selected borehole water samples in Abakaliki, Nigeria. The area under study is known for its high deposit of mineral resources especially lead and limestone; however, lead was not detected in the water sample and this shows that there was no infiltration of this metal from the mining site to the water sources in the region. Also, the proliferation of mining sites and their unregulated activities could also be responsible for the presence of some of these metals in the environment at concentrations that are unsafe for human use. Unsafe drinking water portends significant risk to public health over a lifetime of consumption. It is therefore important for the authorities to periodically screen water meant for human use and public consumption for the presence of potential physical, chemical and biologically contaminants that may affect the health of the populace.
饮用水的质量受到多种自然和人类活动的影响,包括但不限于污染、自然灾害、气候变化、城市化和采矿。水质差会对人体健康产生不利影响,因此定期留意环境中可能出现的水污染是很重要的。本研究调查了尼日利亚Abakaliki选定的钻孔水源的金属含量和细菌特征。在尼日利亚埃邦伊州Abakaliki市选定的钻孔点(指定为A- e点),使用预消毒的塑料容器无菌采集了25个钻孔水样,每个水样250毫升;每个样本都在选择性培养基上进行细菌学分析,以便使用标准微生物学鉴定技术分离和鉴定对公共卫生有重要意义的细菌。采用原子吸收分光光度计(AAS) [AA-7000]对钻孔水样中微量金属的存在进行了化学测定。本研究细菌数最高为2.4 × 104 cfu/ml,最低为1.0 × 104 cfu/ml。从钻孔水样中分离鉴定的疑似细菌分别为大肠杆菌、克雷伯氏菌、金黄色葡萄球菌和铜绿假单胞菌。原子吸收光谱分析表明,部分钻孔水样中含有锌(Zn)、铁(Fe)和锰(Mn)等微量金属。本研究分析的钻孔水样未检出铝(Al)和铅(Pb);检测到的微量金属均在尼日利亚标准组织(SON)和世界卫生组织(WHO)规定的饮用水微量金属可接受限量范围内。本研究假定报告了尼日利亚Abakaliki选定的钻孔水样中存在一些对公共卫生具有重要意义的细菌有机体和一些微量金属。所研究的地区以其丰富的矿产资源,特别是铅和石灰岩矿床而闻名;然而,在水样中没有检测到铅,这表明这种金属没有从采矿现场渗透到该地区的水源。此外,采矿地点的扩散及其不受管制的活动也可能导致环境中某些金属的存在,其浓度对人类使用不安全。不安全的饮用水预示着在一生的饮用过程中对公众健康构成重大风险。因此,当局必须定期筛选供人类使用和公众消费的水,以查明是否存在可能影响民众健康的潜在物理、化学和生物污染物。
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引用次数: 1
Impact of Changing Lifestyle on Municipal Solid Waste Generation in Residential Areas: Case Study of Qatar 生活方式改变对居民区城市固体废物产生的影响:以卡塔尔为例
Pub Date : 2018-04-23 DOI: 10.4172/2252-5211.1000335
H. Bello
Qatar currently has one of the highest per capita municipal waste generation in the world. The continuous increase in household wastes, and overfilled landfills threaten available spaces for urban development programmes in the country. Consequently, this study examined the lifestyle factors that have led to high municipal solid waste generation in the country. Data were gathered from both primary and secondary sources. Considering the sociocultural factors in the country, the convenience sampling technique was adopted. Thus, questionnaires were administered via online survey. At the end of the survey, 68 responses were received, and utilized for the study. The analysis of Data used the descriptive and inferential statistical tools via the SPSS 24 software. Descriptive tools used are frequency tables, bar-diagrams, line graphs, pie charts, averages, and relative importance index while Pearson Correlation was used to make inferences. The study observed a direct relationship between the increasing population in Qatar and the high municipal solid waste generation; and that 50% of the respondents have household sizes of between 4-7 persons. Over 90% of the respondents have university education. The RII result of 3.514 out of 5 showed that kitchen waste accounts for over 70% of the household wastes in Qatar. This is followed in rank by nylon wastes while plastic wastes ranked third. Other waste components are paper and cardboard, glass, and wood and furniture. The calculated average daily waste generated per capita is 1.135 kg. The study gathered that the municipalities, at no cost to the residents, mostly collect household wastes and most of the respondents do not sort their household wastes before disposal. With a Pearson Correlation coefficient value of 0.305 at 0.05 significant level, the study indicated a moderate positive relationship between household size and waste generated from the households. Other socio-economic lifestyle variables such as income level, education factor, and age did not prove to have such significant relationship with municipal solid waste in the area. The study recommended that in addition to coordinated sensitization programmes of waste sorting from the source, the government should set a weight limit of 7kg/household per day. Any household whose wastes exceed this set level should be charged for per kilogram on the extra weight at the end of each month.
卡塔尔目前是世界上人均城市垃圾产生量最高的国家之一。家庭废物的持续增加和垃圾填埋场的过度填满威胁到该国城市发展方案的可用空间。因此,本研究调查了导致该国城市固体废物产生量高的生活方式因素。数据从主要和次要来源收集。考虑到我国的社会文化因素,采用方便抽样方法。因此,问卷是通过在线调查的方式进行的。在调查结束时,收到68份回复,并用于研究。数据分析采用描述性和推理性统计工具,采用SPSS 24软件。使用的描述性工具有频率表、条形图、线形图、饼图、平均值和相对重要性指数,而使用Pearson相关性进行推断。这项研究观察到卡塔尔不断增加的人口与大量城市固体废物产生之间的直接关系;50%的受访者家庭规模在4-7人之间。超过90%的受访者接受过大学教育。RII结果为3.514(满分5分),表明餐厨垃圾占卡塔尔生活垃圾的70%以上。尼龙废弃物排在其后,塑料废弃物排在第三位。其他废物包括纸张和纸板、玻璃、木材和家具。计算得出的人均每日产生的废物为1.135公斤。研究发现,市政当局主要收集生活垃圾,不给居民带来任何成本,大多数受访者在处理生活垃圾前不进行分类。Pearson相关系数为0.305,在0.05显著水平上,表明家庭规模与家庭垃圾产生量呈中等正相关。其他社会经济生活方式变量,如收入水平、教育因素和年龄,与该地区的城市固体废物没有如此显著的关系。该研究建议,除了从源头进行废物分类的协调敏化计划外,政府还应设定每户每天7公斤的重量限制。任何家庭的废物超过这一规定的水平,应按每月月底的额外重量按每公斤收费。
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引用次数: 6
Decommissioned Power Battery Recycling and An Analysis of Relevant Urban Minerals Extensibility in China 中国退役动力电池回收及相关城市矿产可拓性分析
Pub Date : 2018-04-23 DOI: 10.4172/2252-5211.1000334
W. Weiping, Lv Zhishan
It is recommended that decommissioned power batteries be categorized as scrap batteries for recycling or batteries with remaining capacity for use in cascade utilization. Leadership from the public sector combined with the power of social participation should see China taking the opportunity to develop the related extensibility research and work on urban minerals, encouraging upstream and downstream enterprises as well as terminal users to implement decommissioned power battery utilization.
建议将退役动力电池分为回收利用的废电池和梯级利用的剩余容量电池。在公共部门的领导下,结合社会参与的力量,中国应借此机会开展城市矿产的相关可扩展性研究和工作,鼓励上下游企业和终端用户实施退役动力电池的利用。
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引用次数: 1
Kachok Dumpsite Characteristics and Its Future – A Third Kenyan City Perspective 卡乔克垃圾场的特点及其未来——第三个肯尼亚城市视角
Pub Date : 2018-04-19 DOI: 10.4172/2252-5211.1000331
K. P. Aguko, Michael O. Oloko, S. Agong’, J. Oloo
47 Counties inclusive of Kisumu were created as regional administrative units by the Kenyan constitution 2010. The County Government immediately redirected Solid Wastes from other county’s townships to be disposed at the existing 2.73 ha Kachok dumpsite. However, the disposal of solid wastes by observation from collection, transportation to dumping has been having challenges. A compelling aim to re-assess the dumpsite arose to determine if it satisfies minimum siting standards, characteristics and potential for the County. Findings show the dump is not properly sited and is at 10% or lower collection rate of the city’s wastes since the 1970’s, it is full beyond capacity/potential and a nuisance. The rate indicates need for improved planning, regulation and enforcement for the city and the county. The average dump composition in the order of plastics, glasses and organic matter is 34.7, 13.8 and 51.8% and weight per volume that varied by depth/age with an estimated volume of 6853 m3. It has high carbon content (>2%) and heavy metals have not found their way into the groundwater system. Presence of NO3 though shows groundwater pollution is taking place. Air quality parameters exhibited similar trends with higher concentrations over the dumpsite, reducing outward with the nearby sensitive receptors impacted. The dumpsite should be relocated with caution and use of its organic contents directed to agriculture. The other possible uses such as extraction of energy and recycling of waste contents may need review as dumps depository potential is outlived.
根据肯尼亚2010年宪法,包括基苏木在内的47个县被设立为区域行政单位。县政府立即将其他县乡的固体废物转移到现有的2.73公顷的卡乔克垃圾场处理。然而,固体废物的处理从收集、运输到倾倒一直面临着挑战。一个令人信服的目标是重新评估垃圾场,以确定它是否满足最低选址标准、特征和该县的潜力。调查结果显示,该垃圾场选址不当,自20世纪70年代以来,城市废物的收集率仅为10%或更低,已完全超出其容量/潜力,令人讨厌。这一比率表明,该市和县需要改进规划、监管和执法。排土场中塑料、玻璃和有机物的平均组成依次为34.7%、13.8%和51.8%,每体积重量随深度/年龄的变化而变化,估计体积为6853 m3。它的含碳量高(>2%),重金属还没有进入地下水系统。NO3的存在表明地下水正在受到污染。垃圾场上空的空气质量参数表现出类似的趋势,浓度越高,附近的敏感受体受到影响,空气质量参数向外降低。垃圾场应该谨慎地重新安置,并将其有机成分用于农业。其他可能的用途,如提取能源和废物内容物的再循环,可能需要审查,因为垃圾场储存的潜力已经过期。
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引用次数: 1
Effect of NOx Elimination on Electricity Price, Fish Production, GDP and Protection of Global Warming 消除氮氧化物对电价、渔业生产、GDP和保护全球变暖的影响
Pub Date : 2018-03-07 DOI: 10.4172/2252-5211.1000328
S. Ozaki
Much NOx is produced when fossil is burned. Many governments set up the law to eliminate NOx, by the reason NOx is pollution gas and not good for health. And also Drainage NP are eliminated. Some other many governments are welcoming NOx as fertilizer for plant and encouraged the use of NOx and Drainage NP for plankton growth and getting many fish. I could find the data that how much NOx is eliminated at 11 countries. The countries who do not do NOx elimination and do not do NP elimination are getting many fish, fixing much CO2 and electricity price is low and producing many product and increasing GDP. The country who do NOx elimination is decreasing fish production and increasing CO2 emission, promoting global warming and electricity price is high and GDP growth rate is low. Therefore NOx elimination and Drainage NP elimination should be stopped for the promotion of CO2 assimilation, for the production of grain and fish, and for the elevation of GDP growth rate.
化石燃烧时会产生大量的氮氧化物。许多政府都制定了法律来消除氮氧化物,因为氮氧化物是污染气体,对健康不利。同时也消除了排水NP。其他一些政府欢迎氮氧化物作为植物肥料,并鼓励使用氮氧化物和排水NP来促进浮游生物的生长和获得许多鱼类。我可以找到11个国家消除氮氧化物的数据。不消除氮氧化物和不消除NP的国家得到了很多鱼,固定了很多二氧化碳,电价低,生产了很多产品,增加了GDP。消除氮氧化物的国家正在减少鱼类产量,增加二氧化碳排放,促进全球变暖,电价高,GDP增长率低。因此,为了促进CO2的同化,为了粮食和鱼类的生产,为了GDP增长率的提高,应该停止NOx的消除和排水NP的消除。
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引用次数: 11
Waste Management in Crude Oil Processing: Crude Oil Dehydration and Desalting 原油加工中的废物管理:原油脱水和脱盐
Pub Date : 2018-02-06 DOI: 10.4172/2252-5211.1000326
H. Abdel-aal, K. Zohdy, Maha Abdelkreem
Some of the techniques that are proposed for waste management would include: modifications in process design or in used process equipment; choosing alternative approaches or routes for a given process; and recycling. Such methods are recommended in order to mitigate waste formation. Our main aim in this paper is to examine in details crude oil treatment, which involves dehydration and desalting in order to unearth and seize opportunities for waste minimization. In addition, some problems that would lead to waste formation are identified, and their solutions are recommended. Some factors that are relevant to waste formation are investigated. They include: desalting temperature, wash water ratio (dilution water), and type of de-emulsifiers.
建议用于废物管理的一些技术包括:修改工艺设计或使用的工艺设备;为给定的过程选择不同的方法或路线;和回收。建议采用这些方法以减少废物的产生。本文的主要目的是详细研究原油处理,其中包括脱水和脱盐,以便发掘和抓住最小化废物的机会。此外,还指出了一些可能导致废物形成的问题,并提出了解决方案。探讨了与废物形成有关的一些因素。它们包括:脱盐温度、洗涤水比(稀释水)和除乳化剂类型。
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引用次数: 7
期刊
International Journal of Waste Resources
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