Chemical oxygen demand reduction in wastewater by locally isolated Priestia sp. BA01 strain DOI Open Access

Jianfeng Gao,

Murni Halim, Mohd Shamzi Mohamed

et al.

Asia-Pacific Journal of Molecular Biology and Biotechnology, Journal Year: 2024, Volume and Issue: unknown, P. 51 - 64

Published: Dec. 31, 2024

Chemical oxygen demand (COD) refers to the oxidant content consumed by treating water samples with a certain strong under conditions, which is expressed in mg/L. This index widely used world reflect degree of organic pollution water. Using heterotrophic bacteria such as Bacillus sp. reduce COD value wastewater has become common technology. The isolation and study efficient stable strains great significance. In this study, bacterial strain reduction ability was isolated from shallow soil UPM campus. physiological biochemical 16srRNA gene identification were carried out. cultivation application conditions optimized. It confirmed that BA01 belongs Priestia sequence been submitted NCBI GenBank. GenBank number PQ002608. For optimization, OFAT orthogonal test methods used. best are at 8 h, 35 ℃, 250 rpm pH 7.0, biomass reached 2.32×1010 CFU/ml. rotation rate significant. RSM 35.22℃, 7.09, 215.45 rpm. Under these 63.32%, 189.96mg/L. addition, significant whereas pairwise relationships insignificant. Orthogonal experiments both aid systematic analysis experimental results. significantly workload, but they have limitations terms interactions between factors. can capture nonlinear factors, it needs greater tests than experiments.

Language: Английский

Study on Phosphorus Removal Efficiency and Reuse of Chitosan-Based Hydrogel Adsorbent DOI

晓萌 隋

Advances in Environmental Protection, Journal Year: 2025, Volume and Issue: 15(03), P. 346 - 357

Published: Jan. 1, 2025

Language: Английский

Citations

0
Sustainable sorbents for phosphorus and pathogen removal from wastewater and their potential reuse DOI Open Access

Līga Irbe Mikosa,

Kamila Gruškeviča,

Jūlija Karasa

et al.

IOP Conference Series Earth and Environmental Science, Journal Year: 2025, Volume and Issue: 1474(1), P. 012017 - 012017

Published: April 1, 2025

Abstract Excessive phosphorus from agricultural runoff and wastewater discharge is a major contributor to eutrophication in aquatic ecosystems, highlighting the urgent need for effective removal strategies treatment. This study evaluates dual functionality of calcium iron oxide composites (CaFeOxide) removing pathogens wastewater, aiming mitigate environmental pollution promote sustainable reuse spent sorbents. Phosphorus adsorption tests demonstrated that 2 g/L dosage CaFeOxide achieved an average efficiency 84%. The composite also exhibited antimicrobial properties comparable ferric sulphate, reducing Bacillus subtilis spore concentrations. When applied soil, improved pH levels enhanced nutrient availability, underscoring its potential integrated benefits.

Language: Английский

Citations

0
Chemical oxygen demand reduction in wastewater by locally isolated Priestia sp. BA01 strain DOI Open Access

Jianfeng Gao,

Murni Halim, Mohd Shamzi Mohamed

et al.

Asia-Pacific Journal of Molecular Biology and Biotechnology, Journal Year: 2024, Volume and Issue: unknown, P. 51 - 64

Published: Dec. 31, 2024

Chemical oxygen demand (COD) refers to the oxidant content consumed by treating water samples with a certain strong under conditions, which is expressed in mg/L. This index widely used world reflect degree of organic pollution water. Using heterotrophic bacteria such as Bacillus sp. reduce COD value wastewater has become common technology. The isolation and study efficient stable strains great significance. In this study, bacterial strain reduction ability was isolated from shallow soil UPM campus. physiological biochemical 16srRNA gene identification were carried out. cultivation application conditions optimized. It confirmed that BA01 belongs Priestia sequence been submitted NCBI GenBank. GenBank number PQ002608. For optimization, OFAT orthogonal test methods used. best are at 8 h, 35 ℃, 250 rpm pH 7.0, biomass reached 2.32×1010 CFU/ml. rotation rate significant. RSM 35.22℃, 7.09, 215.45 rpm. Under these 63.32%, 189.96mg/L. addition, significant whereas pairwise relationships insignificant. Orthogonal experiments both aid systematic analysis experimental results. significantly workload, but they have limitations terms interactions between factors. can capture nonlinear factors, it needs greater tests than experiments.

Language: Английский

Citations

0