Vol. 8 & Issue 1 ; Section D : Environmental Sciences

Date : Nov.2017 to Jan.2018


Analysis of GHG emission reduction options for the Waste sector by 2035 in Togo on the basis of trend data from the time series 1995-2015

BODJONA Bassaï Magnoudéwa; SABI Kokou; TCHEGUENI Sanonka; BAFAI Diyakadola Dihéénane; KOLEDZI Edem; KORIKO Moursalou; TCHANGBEDJI Gado

[DOI: 10.24214/jcbps.D.8.1.00112.]

  • Abstract

    Togo is still struggling to overcome the difficulties associated with its waste management. The real environmental constraints linked to its cities development are reflected in the absence of public space to house transit depots, transfer stations and final waste dumps. The adverse impacts affect population and environment health as a result of greenhouse gas (GHG) emissions. Data collection based on a consultation of all the actors involved in the waste management made it possible to calculate the emissions of the period 1995-2015 according to the IPCC 2006 methodologies shows that in 2013, carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) are emitted at 11.28; 5.10 and 0.23 Gg respectively giving a total of 189.68 Gg CO2-e. These emissions have increased steadily between 1995 and 2015. The trend has led to the baseline for three mitigation scenarios development by 2035, taking into account the means and modes of waste management. The first scenario, which aims at the general collection of waste, their burial and the recovery of part of the biogas for energy purposes, will avoid the emission of 275.33 Gg CO2-e. The second, which avoids 349.48 Gg CO2-e combines the first scenario with the composting of 60% of the fermentable fraction of waste and the recycling of 50% of paper-cartons. The third scenario will avoid 165.36 Gg CO2-e aims to improve domestic wastewater management. These scenarios will contribute not only to GHG emissions reduction but also to the living environment improvement, waste recovery, biogas production and jobs creation.

Contribution of Organic Geochemistry and Palynofacies to the Characterization of Organic Matter of Black Shales in Côte d’Ivoire Sedimentary Basin (Northern Gulf of Guinea)

I. B. Ouattara, F. Y. P. Assalé, Y. N. Coulibaly, L. Atsé, B. Z. Digbehi

[DOI: 10.24214/jcbps.D.8.1.01325.]

  • Abstract

    The organic matter contained in the black shales of Cenomanian-Turonian series of Côte d’Ivoire was characterized from pyrolytic analysis at Rock-Eval 6 and palynofaciologic observations under Electron Microscope in transmitted and fluorescent light. The results indicate that black shales mainly contain organic matter of marine origin (type II), sometimes of lacustrine origin (type I) and rarely of mixed origin (type II / III). These organic matter is immature and very fluorescent (IPF = 5). In these rocks, TOCs reach 5% weight, HI is high and OI is low. The black shales of Cenomanian-Turonian series of Côte d'Ivoire are potential source rocks that oil potential reaches 15 mg HC / g of rock.

Contribution De La Géochimie Organique Et Des Palynofaciès A La Caractérisation De La Matière Organique Des Black Shales Du Bassin Sédimentaire De Côte D’Ivoire, (Golfe De Guinée Septentrional)

I. B. Ouattara, F. Y. P. Assalé, Y. N. Coulibaly, L. Atsé, Z. B. Digbehi

[DOI: 10.24214/jcbps.D.8.1.01325.]

  • Abstract

    La matière organique contenue dans les black shales du Cénomanien-Turonien a été caractérisée à partir d’analyses pyrolytique au Rock-Eval 6 et palynofaciologique au microscope électronique en lumière transmise et fluorescente. Les résultats indiquent que les black shales présentent principalement des matières organiques d’origine marine (type II), parfois d’origine lacustre (type I) et rarement d’origine mixte (type II/III). Ces matières organiques sont immatures et très fluorescentes (IPF=5). Dans ces roches, les COT atteignent 5%poids, les IH sont élevés et les IO faibles. Les black shales du Cénomanien-Turonien de Côte d'Ivoire sont des roches mères potentielles dont les potentiels pétroliers atteignent 15 mg HC/ g de roche.

Effect of Intigrenated Phosphorus Management on Biochemical Properties of Soil under Soybean Crop

V.N. Nale, A. H. Patil, A. V. Kumbhar

[DOI: 10.24214/jcbps.D.8.1.02632.]

  • Abstract

    A field experiment was conducted at PGI, farm of Mahatma Phule Krishi Vidyapeeth, Rahuri, Dist. Ahmednagar (Maharashtra) during kharif season of 2011 using randomized block design with three replication and nine treatments in Vertic Haplustepts Inceptisol soil to study the influence of integrated phosphorus management on microbial population and soil enzyme activities under soybean crop. The treatment application of manures and fertilizers as per STCRC equation (yield target 25 q ha-1) with FYM to soybean recorded significantly highest bacterial (31.03 x 106 cfu g-1 soil), actinomycetes (15.47 x 104 cfu g-1 soil), PSB (22.55 x 104 cfu g-1 soil) and fungi population (13.48 x 105 cfu g-1 soil), respectively with significantly highest (27.94 μg TPF g-1 soil 24 hr-1) DHA at soybean harvest. However, at all critical growth stages of soybean, The treatment application of manures and fertilizers as per STCRC equation (yield target 25 q ha-1) with FYM to soybean was significantly superior over all rest of the treatments in respect of both acid and alkaline phosphatase activity. The value of acid and alkaline phosphatase in these treatment are 17.97, 20.72, 17.85,14.91 and 55.28, 66.48, 57.54 and 34.39 μg PNP g-1soil hr-1 under soybean growth stages viz., 3rd trifoliate, 50% flowering, pod filling and at harvest, respectively. However, the highest DHA, acid and alkaline phosphatase activities in soybean was observed in the same treatment and occurs the highest rate at 50% flowering stage of soybean.

Present status of crossbreed dairy farm in a selective rural area of Bangladesh

Mohammad Ataur Rahman and Kazi Mehetazul Islam

[DOI: 10.24214/jcbps.D.8.1.03341.]

  • Abstract

    To investigate the present status of 50 crossbred dairy farms at nine upazila of Habiganj district of Bangladesh during from July 2016 to June 2017. It was observed that 56% of farm owners taken dairy as a side business and the rest as main business. Highest percentage (52%) of the farmers have secondary school level education followed by 22% farmers have higher secondary school level and nobody were found illiterate. Monthly incomes of farmers were 0 to 4 thousands, 5 to 10 thousands, 11 to 15 thousands and above 15 thousands taka for 24, 44, 26 and 6% respectively. The average dairy milk yield of each crossbred cow was 6.11 liters/day. It was found that 92% of crossbred owners used artificial insemination and rest used both artificial and natural services. To estimate that the rearing cost of crossbred dairy cow was Tk. 163.00/cow/day and return from rearing crossbred dairy cow was Tk. 353.50/cow/day. The net return was Tk. 190.50/cow/day from crossbred dairy cow in the study area and 1:1.17 ratios of cost benefits was done. There was significant correlation between different crossbred dairy cows. Taken together, this study might be valuable regarding development of small scale crossbred dairy farms with the real status regarding breeding, feeding, housing, milking, and marketing of milk, managemental status, productive and reproductive performances of crossbred cow.