Characterization of Household Wastes in D.R. Congo, a Case Study of Lubumbashi
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American Journal of Environmental Sciences Original Research Paper Characterization of Household Wastes in D.R. Congo, a Case Study of Lubumbashi 1,2*Martin T. Mpinda, 2Sissou Zakari, 3*Olusegun K. Abass, 2Eric Misilu M. Nsokimieno, 1Guy David Sebagenzi, 1Lydie Linda Basheke, 1Maurice Kesonga, 4Henri de Paul I. Nkomerwa, 5Rodrigue Khonde and 1Patrick Kasangij wa Kasangij 1Department of Natural and Renewables Resources Management, Faculty of Agricultural Sciences, University of Lubumbashi, Lubumbashi B.P: 1825, DR. Congo 2School of Environmental Studies, China University of Geosciences, Wuhan, Hubei 340074, P.R. China 3Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, P.R. China 4Department economy, Faculty of sciences, University of Bukavu, B.P: 285 Bukavu, DR. Congo 5Department of Occupational and Environmental Health of the School of Public Health, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, P.R. China Article history Abstract: The insufficient supervision of household solid waste is a notorious Received: 05-07-2016 problem in DR. Congo cities. Besides, solid waste management in Lubumbashi Revised: 05-05-2017 has been very rudimentary and unsystematic. This study aims to quantify and Accepted: 07-06-2017 characterize the household solid waste in two Lubumbashi municipalities. For more than 50 years after independence from colonialism, the city trailed direct Corresponding Authors: Martin T. Mpinda discharge of waste on exposed site and waterside and sometimes in watercourse Department of Natural and with no soil cover or leachate treatment in place. Almost sixty households from Renewables Resources two Lubumbashi city municipalities were investigated by means of group Management, Faculty of sampling techniques and the obtained data was used to quantify and characterize Agricultural Sciences, University the municipalities’ household solid waste. The composition of the household waste of Lubumbashi, Lubumbashi revealed that 30% of the wastes were recovered by Lubumbashi’s state B.P: 1825, DR. Congo administration and 70% by local residential services termed individuals. However, in Tel: +243852587802 Kamalondo municipality, the household waste recovered by the state, individuals +243978209494 Email: [email protected] and private sectors were 25.9%, 67.5 and 6.7%, respectively. About 90% of the residence did not subscribe for the household system of collection. While each Olusegun K. Abass household generated varying amount and type of wastes, the average value of Institute of Urban biodegradable waste produced in Kamalondo (1.79 kg) was three times higher Environment, than that in Lubumbashi (0.65 kg). Finally, this study highlighted that about USD Chinese Academy of Sciences, 2.00 per household was enough to improve the household waste collection system of Xiamen, 361021, P.R. China 2,000,000 residents in seven municipalities. Email: [email protected] Keywords: Waste Characterization, Household Solid Waste, Waste Generation, Solid Waste Management, Separation of Household Waste Introduction due to lack of efficient management system. Mpinda et al . (2016; Guerrero et al ., 2013), identified that waste People migration from villages to cities owing to plastics, glass and metals in the HDW are major rapid industrialization and population growth in D.R. nuisances, as they pollute environment, compromise Congo has resulted in considerable increase in Municipal amenities, clog drains and cause flooding during rainy Solid Waste (MSW) generation. MSW is sourced from season. Within the HDW constituents, some are the collection and aggregation of individual Household recoverable, reusable and recyclable; thus they can help Domestic Wastes (HDW), which contains various for a better HDW management. constituents including food waste (which is biodegradable Among the major issues confronting HDW or compostable), sand, paper, plastics and metals such as management are inadequate supply of waste containers, aluminum, glass and so on. Therefore, HDW represents longer distance to these containers (which increase the one of the major environment challenges in D.R. Congo probabilities of waste dumping in open areas) and © 2017 Martin T. Mpinda, Sissou Zakari, Olusegun K. Abass, Eric Misilu M. Nsokimieno, Guy David Sebagenzi, Lydie Linda Basheke, Maurice Kesonga, Henri de Paul I. Nkomerwa, Rodrigue Khonde and Patrick Kasangij wa Kasangij. This open access article is distributed under a Creative Commons Attribution (CC-BY) 3.0 license. Martin T. Mpinda et al . / American Journal of Environmental Sciences 2017, 13 (3): 277.288 DOI: 10.3844/ajessp.2017.277.288 unavailability of roadsides waste bins for communal use. management and characterization are increasingly Furthermore, the household’s attitudes towards waste necessary (Gu et al ., 2014). separation is affected by lack of active support for Surprisingly, until recent, less quantitative data is investment in real estate company, community residential available for waste management on the household committee involvement for public participation schemes (Guerrero et al ., 2013) and specifically from (Zhuang et al ., 2008) and fees collection service based on many households in D.R.C municipalities. Therefore, the the waste volume or weight (Schenberg, 2011). knowledge of the qualitative and quantitative composition In another report, Tadesse et al . (2008) analyzed the of HDW is of importance to implement the most factors that influence household waste disposal decision appropriate waste reduction policies and could prove making and conclude that the supply of waste facilities helpful in the choice of an adequate waste management considerably affects waste disposal choice. Consequently, and disposal scenario. This study reflects the actual state household waste characterization is important to of household waste management in Lubumbashi. It aims suggesting a better and efficient HDW management to characterize HDW in ten (10) districts of two system. Furthermore, Pokhrel and Viraraghavan (2005) municipalities in Lubumbashi. The daily total generated observed that insufficient financial resources often limit HDW was first categorized and quantified. Then the the safe disposal of waste in well-equipped and quantitative analysis of each waste type was computed engineered landfills and absence of legislation. within and between districts. Finally, the influences of Household waste characterization involves the social factors on the HDW production were studied. determination of waste properties, which are the very first step of the whole planning and implementation Materials and Methods cycle of HDW management facility (Zurbrügg et al ., 2007). The generated waste characteristics and quantity Study Area affect the technical and management practices. This study was conducted Lubumbashi city (Upper According to Afon (2003), the composition of generated Katanga, D. R. Congo) located between (11 ° 37' 437'' -11 ° waste in an area determines the type of disposal pattern, 42' 52.9’’ and 27 ° 27' 48.9’’-27 ° 32’ 60.6’’) as shown in which is suitable for a specific form of waste. Meanwhile, many failures of waste management Fig. 1. Lubumbashi is an urban agglomeration with a practices, especially disposal techniques, could be population of about 2 million people (Bureau Du Maire, attributed to an improper waste characterization and lack 2017; Brinkhoff, 2010). It is a flat city at an altitude of of understanding of its implication. Thus, the principles about 1200 m, drained by the Kafubu River and its of solid waste management for a particular city or an tributaries and has a humid subtropical wet and dry urban area need to be decided based on parameters that climate (Kottek et al ., 2006). The city is easily accessible are locally specific, as long as the waste characteristics by air, rail and highway. These transportation networks and volume can vary not only from a city to another, but give the city a wide variety of quick access to its mineral also within the same city (Ogunbiyi, 2001). resource and create room for economic development. The quantification of waste is usually studied During the Second Congo War, starting from 1998 to separately; but it is closely associated with waste 2003, D.R.C was severely impacted and an armed characteristics that depend mainly on the source where it conflict continues in parts of the country. Thus, a large is generated. Moreover, the proportion of the waste proportion of the population lives in low-income components depends on various factors (Darmastuti, settlements, including very poor informal settlements. 2000), which are linked to socio-cultural factors and land However, the increasing surge of industries involved in use pattern, such as housing density and eating habits copper smelting, textiles and food processing have led to (Abumere, 1983). On one hand, Abumere (1983) states urban economic growth, as well as environmental that solid waste accumulation is a product of chaotic use degradation (Nsokimieno et al ., 2015). pattern, which he determines according to number of Spatial Distribution of Municipalities and Solid households; however, on the other hand he finds that the Waste Generation eating habit in a house significantly determines the composition of produced waste. According to administrative functions Lubumbashi is In poorly-managed situations, unpredictable and divided into 7 municipalities including: Annexe, harmful consequences of household wastes can occur Kamalondo, Kampemba, Katuba,