Utilization of Abattoir Solid Wastes as Biosorbents for Surface Water Treatment

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Utilization of Abattoir Solid Wastes as Biosorbents for Surface Water Treatment. is a well-researched topic, it is to be used as a guide or framework for your Academic Research

Abstract

Man’s need for proteinaceous foods has led to the generation of abattoir solid waste at elevated quantity. This waste could be well managed using an environmentally friendly and cost-effective waste management practice such as adsorption to mitigate its impact on man and his environment. This study considered the use of chars and modified chars from cattle bone and horn for the treatment of polluted surface
water. Cattle horn was carbonized at 350, 400, and 450 oC while the bone was pyrolyzed at 450 oC. The equal portion of the chars was modified using aluminum and zinc chloride salts separately. Removal efficiencies of the six adsorbents were examined. The biosorbents morphology and composition were analyzed by the SEM-EDX machine.

Best quality horn char was obtained at 400 oC with virtually no odor impact and minimum energy inputted. The removal percentage of adsorbate varied with the contact time, surface water source, and biosorbent involved. The highest removal efficiencies at 6 hrs contact time for As, Zn, NO3, BOD, COD, coliform count, total aerobic and total fungal was 100%, 60%, 65.7%, 50.7%, 52.2%, 97.1%, 98.2% and 99.8% respectively. The study reveals the potential of abattoir non- biodegradable solid wastes as biosorbents for the removal of contaminants in mildly polluted surface waters.

Introduction

Solid waste generation in a most developing nations is on the increase daily with the advent of industrialization and urbanization. Orheruata and Omoyakhi, (2008) noted the trend of population growth as it
influence meat consumption, leading to more solid waste generation. De Hean (1996) projected the world’s meat production by 2020 to be 310 million tonnes/year. This projection will of course lead to more solid waste generation. Presently, a lot of management practices are in place to combat the solid wastes menace. They include incineration, composting, landfilling, etc. Though Raman and Narayanan (2008) considered landfilling as the most common disposal method, this is only feasible in locations with sufficient lands for such activities. In urban centers or other densely populated areas where land is becoming luxury and competitive, such a method may not be practicable. Other measures such as recycling of the waste will be a realistic and applicable alternative. The conversion of solid wastes to biosorbent was considered by some researchers as an alternative solution to agricultural solid wastes management. Solid wastes from Rambutan seed (Norlia et. al., 2011), Corn cob (Tsai et. al.,1998), Marine red algae Gracilaria (Esmaeili et. al., 2008), Coconut shell (Amuda and Ibrahim, 2006), Cattle-manure (Qian et. al., 2007), brewed tea waste (Dizadji et. al., 2011), Cattle bone (Zhu et. al.,
2011), etc. were recently used in the adsorption of heavy metals from water, aqueous solution and air with outstanding results obtained. Adsorption as described by Ansari and Mohammed-Khan (2009) is an effective physical method employed to remove dissolved organic and inorganic pollutant. This method can also be defined as the removal of contaminants from a medium (air/water) by binding or adsorbing it on the surface and within the pores of the adsorbent. Compared with most treatment methods, adsorption is less sophisticated, cheap, non-sludge producing, ecofriendly, and time effective. Esmaeili et. al., (2008) recommended the use of adsorption in surface water treatment due the adulteration of contaminants concentration in most surface waters.
This study was aimed at managing some non-putrescible solid wastes generated from slaughter-house as biosorbents for surface water treatment.

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Additional information

Type

Project Topc and Material

Category

Department: Agricultural Engineering

No of Chapters

5

Reference

Yes

Format

PDF

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