Browsing by Author "Iqbal, Muhammad"

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    The Changes of Land Use Pattern Affect to the Availability of Water Resources in Siak Watershed, Riau Province, Indonesia
    (2018-09-04) Sandhyavitri, Ari; Sutikno, Sigit; Iqbal, Muhammad
    Significant shift in the land use within Siak watershed (DAS Siak) affects to its availability of water resources. This also affected to increase fluctuation level of the river flows. Therefore to develop a comprehensive watershed management strategies, it is required a hydrological model which is in capable to represent the hydrological cycle of the watershed. Hydrological model may use the Soil and Water Assessment Tool (SWAT) application software package. The SWAT simulations performed various scenarios for land use changes in the period of 2002, 2007, and 2012 within the Siak watershed. Based on this research study, the optimal determination coefficient (R2) of SWAT output models were = 0.59, with Nash-Sutcliffe Efficiency (NSE) was 0.58. These results have satisfied the research objectives as the findings coefficient > R2 min (0.4), and NES min (>0.36). The level of water resources availability was calculated by comparing the ratio of Qmax and Qmin of the Siak flow during the period of 2002 to 2012. It was revealed that the ratio of water resources (Qmax/Qmin) were as the following order 10.72 (2002), 6.83 (2007) and 12.95(2012) respectively. Should the ratio value Qmax/Qmin was higher, the more critical the condition of Siak water resources will be. Hence, the changes in land use in the Siak watershed affected to suppress the water resources.
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    EFISIENSI PENYISIHAN KANDUNGAN PADATAN LIMBAH CAIR PABRIK SAGU MENGGUNAKAN REAKTOR HIBRID ANAEROB DENGAN VARIABEL LAJU ALIR
    (2013-02-09) Iqbal, Muhammad; Ahmad Adrianto; HS Irdoni
    Increased production of sago starch production increases causing waste in the form of solid waste and liquid waste. Sago starch processing waste liquid 94% -97% and directly channeled into the waters surrounding the treatment process. Sago effluent average yield of dissolved organic compounds, solids and waste acidic concentration through the standard. Solids is one of the parameters to measure water pollution. The concentration of dissolved solids sago factory effluent was 3.76 g/L, while the concentration of the raw quality is 0.1 g/L. This study aims to reduce the solids content in the effluent using sago starch factory wastewater as substrate performed anaerobically using anaerobic hybrid bioreactor mediated by stones. Hybrid anaerobic bioreactor is a combination between the suspended growth and attached growth system using a stone as a medium of cell immobilization. Working volume was 10 L reactor with a variation of the feed flow rate is 2.5 L/day, 3.3 L/day, 5L/day and 10 L/day. Parameters observed in this research is TS, TSS, TVS and VSS were analyzed by gravimetric methods. The results of this study indicate that the efficiency of TSS at a flow rate of 2.5 L / day is 46.87%, 3.3 L /day is 62.49%, 5 L/day is 59.04% and 10 L /day is 44.89%. Optimum flow rate for the provision of wastewater solids sago plant is the flow rate 5 L/hr. These results indicate that the hybrid anaerobic bioreactor mediated by stones can reduce the solids content of sago wastewater plant but did not reach the quality standards specified value.
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    Penerimaan Panelis dan Analisis Usaha Mi Instan Dari Pati Sagu
    (2013-06-11) Iqbal, Muhammad; Pato,Usman; Rifai,Ahmad
    The purpose of this research was to analyze panelist acceptance and business analysis of the best treatment instant noodles from 100% sago starch. Parameters observed were acceptance of panelist and business analysis includes analysis cost of revenues, revenues, benefits, cost of production, business efficiency and break event point. Data obtained were analyzed used the Cochran Q test at 5% level. The results showed that acceptance of sago starch noodles can be accepted by the panelists based on chi square distribution at 5% level. calculated Q value has known by 7 meanwhile the value of the critical point or the table value of chi square is 7.814, it was decided H0 was accepted, and deserves to be developed based on the criteria of business analysis.