Browsing by Author "Harahap, Sampe"

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    The Effectiveness of Zeolite and Activated Charcoal Media in Reducing Pollutants in Tofu Industrial Waste
    (2016-08-28) Harahap, Sampe
    Liquid waste treatment is very important because the untreated liquid waste may pollutes water bodies. To understand the effectiveness of the use of zeolit and active charcoal media to reduce the pollution in the tofu liquid waste, a study has been conducted. There were 5 treatments aplied, namely the 5, 10 and 15 days retention time. Results shown that the wastewater quality parameters of the treated waste were TSS (102.0 mg / L), pH (6.0 mg / L), DO (3.6 mg / L) BOD5 (88.0 mg / L), COD (141.0 mg / L), ammonia (1.4 mg / L), orthophosphate (1.2 mg / L) and nitrate (17.2 mg / L). The most effective treatment is the 10 days retention time and it reduced 73.3% of BOD5, 79.3% of COD and 80.9% of ammonia.
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    Fitoreremediasi Pb Dan Zn Di Sungai Siak Oleh Ceratophyllum demersum
    (2018-03-12) Budijono, Budijono; Hasbi, Muhammad; Purwanto, Eko; Harahap, Sampe
    Ceratophyllum demersum is a type of drowning macrophytics that plays a key role in freshwater ecosystem and is commonly used in phytoremediation of heavy metals in water. This preliminary study focused on assessing the ability of C. demersum in accumulating heavy metals (Pb and Zn) into their body tissues from heavy metals contained in the water of the Siak River. This plant is grown in natural condition (S. Siak) at different water depth (0,5,5,1 m) with aquatic plant floating raft. Measurement of water samples and water retrieval as well as entire plant tissue per depth for calculated heavy metals at different time intervals (6, 12, 18, 24, 30 days). The results show that the Siak River has been contaminated with Pb and Zn and the concentration of Pb> Zn in C. demersum with each Pb of 0 - 1m water depth is 12.641 mg / kg, 15.659 mg / kg and 16.604 mg / kg of initial concentration of 0.158 mg / kg. The average absorption rate and Pb accumulation per depth are 78.86%, 97.92% and 103.89%, respectively. It was concluded that phosemediation of heavy metal Pb in Siak River was effective with C. demersum up to a water depth of 1 m.