Pore Size in the Removal of Phosphorus and Nitrogen from Poultry Slaughterhouse Wastewater Using Polymeric Nanofiltration Membranes

Abstract

Nutrients (nitrogen and phosphorus) are among the water quality parameters that cannot be easily removed from wastewater. Unfortunately, the excessive accumulation of nutrients in water can lead to numerous health issues for humans and the environment in general (including aquatic life). This study looked into the potential use of polymeric nanofiltration membranes to remove total phosphorus, ammonia, nitrate, and nitrite from poultry slaughterhouse wastewater. The wastewater samples were subjected to three different treatment systems determined by pore sizes (0.4, 0.6, and 0.8 nm) as well as an integrated system composed of ultrafiltration and nanofiltration as the main units. The results of the study showed that pore size can significantly affect a nanofiltration system’s overall performance for removing nutrients from poultry slaughterhouse wastewater. The phenomenon was supported by the analysis of variance (ANOVA) results, which showed that the treated effluent’s concentrations of the investigated water quality parameters at different pore sizes produced p-values that were less than 0.01 (statistically significant). According to the results of the removal efficiency analysis, the combination of ammonia and a 0.8 nm pore size demonstrated the lowest removal efficiency, with a removal rate of around 54.57%. However, the combination of nitrate and a 0.4 nm pore size showed the best removal efficiency of about 90.5%. On the other hand, the integrated treatment was observed to be highly effective in the removal of the investigated parameters with a removal efficiency ranging from 97.8 to 99.71%. The study’s findings offer useful information about the potential use of nanofiltration treatment systems for wastewater from poultry slaughterhouses.

Selection of Active Microorganism Strains Isolated from a Naturally Salty Lake for the Investigation of Different Microbial Potentials

“…If there was only a weak correlation between the variables, there was no meaningful association between them. The associations were rated as "bad," "moderate," "strong," and "very strong", which corresponded to the scores 0.3-0.49, 0.5-0.69, and 0.7-1, respectively [27].…”

Study of the removal of nitrate and dissolved iron pollutants from industrial wastewater to become raw water using nanofiltration

“…The study [9] indicated that a high-performance nanofiltration membrane was efficiently able to remove dissolved iron and other heavy metal ions including Fe 2+ , Pb 2+ , Ni 2+ , Mn 2+ , Zn 2+ , Cu 2+ with percentage rejection of 99.88%, 99.61%, 99.51%, 99.31%, 99.11%, 98.72% respectively. The previous study [10] indicated that the nitrate pollutant was efficiently removed with a 90.5% efficiency value by nanofiltration treatment with a pore size of 0.4 nm. This research is related to the processing of wastewater from one of the industrial areas in Indonesia into raw water using nanofiltration on a pilot scale.…”

Comparative Analysis of Donnan Steric Partitioning Pore Model and Dielectric Exclusion Applied to the Fractionation of Aqueous Saline Solutions through Nanofiltration

“…This technology has seen significant development in the last 30 years. Figure 1 illustrates that NF is selective for a range of molecular weights of compounds between 200 and 1000 Daltons, positioning itself between reverse osmosis (RO) and ultrafiltration (UF) [4][5][6]. Depending on the membrane type and operating conditions, NF can fractionate ions based on their electrical charge and molecular weight, as well as organic solutes with relatively low molecular weights [7].…”