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To Evaluate The Efficiency Of Char And Biochar For Waste Water Treatment

By: Ayesha Rasheed (2014-VA-227) | MS.Saman Saad.
Contributor(s): Dr. Saif Rehman Kashif | Dr.Muhammad Nawaz.
Material type: materialTypeLabelBookPublisher: 2016Description: 87p.Subject(s): Environment SciencesDDC classification: 2749-T Dissertation note: It is essential to treat waste water in Pakistan as Pakistan is confronting a persistent populace blast, jumbled mechanical and industrial advancement, vast parts of populace experiences the health issue because of absence of the quality drinking water and occurrence of harmful contaminants in water used for irrigation.The point of the study is to present a savvy and beneficial procedure in the society and to minimize the direct transfer of valuable waste in the landfills and in water bodies. In current research the char (from refuse derived fuel) and biochar (from rice husk) was produced from pyrolysis and was simultaneously used for waste water treatment of Main Outfall Drain, Lahore. Moreover, different columns of char and biocharwas utilized for water purification and efficiency of Char and Biochar for waste water treatment was compared in terms of pre-analysis and post-analysis of parameters like heavy metals, minerals, biological oxygen demand, carbonates and bicarbonates, pH. Later, the treated waste water was used for irrigation of the ornamental and hyperaccumulater plant Althea rosea for one month. After one month, the plant was harvested and the plants samples roots and shoots was analyzed for heavy metals Pb, Zn, Mn, Ni, Cr, Cu and Fe by using Atomic Absorption Spectrophotometer (AAS) Model Hitachi 8200 and minerals Na, Ca and K by using multi-channel the Flame photometer Model from Biotech UK. It is investigated that use of hyperaccumulator plants uptake the residual contaminants present in waste water so in that way hundred percent efficiency is achieved. In conclusion, it is inferred that biochar application is good and its efficiency for adsorption is higher with respect to char. It was evident from results that biochar is more efficient with respect to char and absorption capacity of char and biochar is quantity, time and feedstocks dependent. It is due to the fact that the efficiency depends on different types of Summary 81 feedstocks as rice husk and refuse derived fuel is totally two different types of solid waste, their nature of the composition is different and that is why their reactivity towards adsorption is different. Furthermore, the pyrolysis temperature is different for both types of feedstocks, the absorption efficiency is also temperature dependent therefore two different types of feedstocks char efficiencies different.
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It is essential to treat waste water in Pakistan as Pakistan is confronting a persistent
populace blast, jumbled mechanical and industrial advancement, vast parts of populace
experiences the health issue because of absence of the quality drinking water and occurrence
of harmful contaminants in water used for irrigation.The point of the study is to present a
savvy and beneficial procedure in the society and to minimize the direct transfer of valuable
waste in the landfills and in water bodies.
In current research the char (from refuse derived fuel) and biochar (from rice husk)
was produced from pyrolysis and was simultaneously used for waste water treatment of Main
Outfall Drain, Lahore. Moreover, different columns of char and biocharwas utilized for water
purification and efficiency of Char and Biochar for waste water treatment was compared in
terms of pre-analysis and post-analysis of parameters like heavy metals, minerals, biological
oxygen demand, carbonates and bicarbonates, pH.
Later, the treated waste water was used for irrigation of the ornamental and
hyperaccumulater plant Althea rosea for one month. After one month, the plant was
harvested and the plants samples roots and shoots was analyzed for heavy metals Pb, Zn, Mn,
Ni, Cr, Cu and Fe by using Atomic Absorption Spectrophotometer (AAS) Model Hitachi
8200 and minerals Na, Ca and K by using multi-channel the Flame photometer Model from
Biotech UK. It is investigated that use of hyperaccumulator plants uptake the residual
contaminants present in waste water so in that way hundred percent efficiency is achieved.
In conclusion, it is inferred that biochar application is good and its efficiency for
adsorption is higher with respect to char. It was evident from results that biochar is more
efficient with respect to char and absorption capacity of char and biochar is quantity, time and
feedstocks dependent. It is due to the fact that the efficiency depends on different types of
Summary
81
feedstocks as rice husk and refuse derived fuel is totally two different types of solid waste,
their nature of the composition is different and that is why their reactivity towards adsorption
is different. Furthermore, the pyrolysis temperature is different for both types of feedstocks,
the absorption efficiency is also temperature dependent therefore two different types of
feedstocks char efficiencies different.

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