Abstract
Ultrasonically Aided Cross-flow Membrane Filtration for Latex Wastewater
Highlights
Wastewater from concentrated latex skim crepe industry contains sulfate which comes from sulfuric acid in the skimming process with its concentration ranges between 644 and 1688 mg l−1 and has the pollutants expressed in term of the 5-day biological oxygen demand (BOD5) at the value of about 7000–15000 mg l−1
Yuan Gao et al improved the system by using a frequency of 20 kHz and a power of 16 W applied to a cross-flow ultrafiltration system to investigate the ultrasonic control of surface-water fouled ceramic membranes.[2]
This result showed that the trends of the flux performance for US enhanced experiments were similar with the trends of the flux performance without US, indicating that US did not alter the basic of UF processes. This finding was similar to the result from Cai et al.[19]. They found that the flux of dextran solution after the US treatment with 28, 45 and 100 kHz frequency had a similar trend with the performance without US treatment
Summary
Wastewater from concentrated latex skim crepe industry contains sulfate which comes from sulfuric acid in the skimming process with its concentration ranges between 644 and 1688 mg l−1 and has the pollutants expressed in term of the 5-day biological oxygen demand (BOD5) at the value of about 7000–15000 mg l−1. Membrane filtration could become a method for isolating value-added product from latex wastewater and discharging minimal amount of effluent, making latex processing an environmental friendly process. This process could achieve “zero discharge” as all the products from the concentration process have commercial value.[3] The retentate can be used as part of latex product’s raw material while the permeate water can be used for rinse purposes. Membrane requires a surface chemistry which prefers binding to water over other materials. This implies that the material must be very hydrophilic. This study will focus on the effect of frequency of the ultrasound waves, water bath temperature and the sonication time
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