Livestock Wastewater Treatment in Batch and Continuous Photocatalytic Systems: Performance and Economic Analyses

Asha, Raju C.; Vishnuganth, M. A.; Remya, Neelancherry; Selvaraju, N.; Kumar, Mathava

doi:10.1007/s11270-015-2396-4

Cited by 39 publications

(7 citation statements)

References 41 publications

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“…The discharge of livestock sewage will considerably increase the pollutant loads of the receiving water, thereby causing the eutrophication of water bodies and groundwater pollution . In previous works, some conventional biochemical methods have been used to decrease organic matter and suspended solids in livestock sewage, which rarely effectively remove high‐strength inorganic N. Therefore, the rational and economical treatment of livestock wastewater has become an urgent issue worldwide …”

Section: Introductionmentioning

confidence: 99%

Association of robust nitrogen removal with spatiotemporal nitrifying bacterial community dynamics in a new bioreactor for treatment of simulated livestock wastewater with high ammonia content

Zhang

Kong

Hua

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND Different types of nitrogen‐containing wastewater have been treated with dewatered alum sludge (DAS) or neutralized used acid (NUA) or with a combined DAS–NUA biofilter. The connections between the spatiotemporal structures of ammonia‐oxidizing bacteria (AOB) and nitrite‐oxidizing bacteria (NOB) and the nitrogen removal performance of DAS–NUA biofilter have not been fully clarified. To address this issue, AOB and NOB genetic characteristics response to nitrogen conversions in a laboratory‐scale DAS–NUA biofilter were investigated. RESULTS The spatiotemporal distribution of the AOB in DAS was heterogeneous in the bioreactor. The trends observed in its structure were a function of depth along the flowpaths and time. However, AOB in NUA and NOB in both substrates were time and space independent. The spatial and temporal behavior of nitrifying bacteria mainly depended on the pH, followed by dissolved oxygen. The Shannon indexes of AOB and NOB and the relative abundances of Nitrosomonas and Nitrobacter had significantly negative relationships with NH+4–N and total nitrogen concentrations in effluents. CONCLUSIONS The Shannon indexes of AOB and NOB and the relative abundances of Nitrosomonas and Nitrobacter were the key indicators of nitrogen removal and have implications for effective nitrogen attenuation strategies. © 2018 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Association of robust nitrogen removal with spatiotemporal nitrifying bacterial community dynamics in a new bioreactor for treatment of simulated livestock wastewater with high ammonia content

Zhang

Kong

Hua

et al. 2018

J of Chemical Tech & Biotech

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“…This step is crucial to giving a more well-rounded comparison of photocatalytic water treatment with current, well established procedures for NOM removal. Very few publications have evaluated the cost of applying selected photocatalysts for other pollutants, such as immobilised TiO 2 for the treatment of industrial wastewaters [158]. Another important factor to consider is the environmental impact of such photocatalytic treatments, life cycle assessments including a goal and scope definition, inventory analysis, and life cycle impact assessment (LCIA) [159] would need to be done to more properly predict the implications of using these systems on an industrial scale.…”

Section: Conclusion and Considerations For Future Researchmentioning

confidence: 99%

Photocatalytic Oxidation of Natural Organic Matter in Water

Gowland

Robertson

Chatzisymeon

2021

Water

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Increased concentrations of natural organic matter (NOM), a complex mixture of organic substances found in most surface waters, have recently emerged as a substantial environmental issue. NOM has a significant variety of molecular and chemical properties, which in combination with its varying concentrations both geographically and seasonally, introduce the opportunity for an array of interactions with the environment. Due to an observable increase in amounts of NOM in water treatment supply sources, an improved effort to remove naturally-occurring organics from drinking water supplies, as well as from municipal wastewater effluents, is required to continue the development of highly efficient and versatile water treatment technologies. Photocatalysis has received increasing interest from around the world, especially during the last decade, as several investigated processes have been regularly reported to be amongst the best performing water treatment technologies to remove NOM from drinking water supplies and mitigate the formation of disinfection by products. Consequently, this overview highlights recent research and developments on the application of photocatalysis to degrade NOM by means of TiO2-based heterogeneous and homogeneous photocatalysts. Analytical techniques to quantify NOM in water and hybrid photocatalytic processes are also reviewed and discussed.

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“…For example, one emerging technology for decomposing POPs in drinking and waste waters is photocatalysis, which uses light to split water into free radicals that degrade POPs. This technology is significantly cheaper and more efficient at removing POPs than conventional methods (Nguyen et al 2020;Asha et al 2015). Integrating photocatalytic technologies with current water treatment infrastructure in developing nations will increase job opportunities in an environmentally sustainable market.…”

Section: Prescribe Clearer Guidelines On the Environmental Risks Of Popsmentioning

confidence: 99%

Establishing global climate resilience to persistent organic pollutants through the private sector: a call to reform institutional standards of the International Finance Corporation

Tam

Chiang

Huynh

2021

JSPG

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Persistent organic pollutants (POPs) are toxic synthetic chemicals prevalent in the environment that have been linked to serious health effects including various cancers, hypertension, and diabetes. Owing to their unique physicochemical properties, POP accumulation in the environment poses a serious risk to public health. Over the last few decades global climate change (GCC) has exacerbated increasing temperature and extreme weather events, which reduce the storage capacity of POPs in the environment and precipitate their global remobilization. If we remain unprepared to block GCC-associated release of POPs globally, our adaptation and resilience to climate change will be jeopardized. The Stockholm Convention, an international treaty that aims to reduce and eliminate POPs, is not fully enforceable due to a lack of environmental funds for governments of developing countries. One way to circumnavigate these financial hurdles is to create new markets for POP removal through the private sector. We recommend the International Finance Corporation, the private sector arm of the World Bank, reform its institutional regulations to consistently guarantee funding for proactive measures against POPs. We additionally recommend investing in local POP removal infrastructure projects that encourage economic growth.

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Livestock Wastewater Treatment in Batch and Continuous Photocatalytic Systems: Performance and Economic Analyses

Cited by 39 publications

References 41 publications

Association of robust nitrogen removal with spatiotemporal nitrifying bacterial community dynamics in a new bioreactor for treatment of simulated livestock wastewater with high ammonia content

Association of robust nitrogen removal with spatiotemporal nitrifying bacterial community dynamics in a new bioreactor for treatment of simulated livestock wastewater with high ammonia content

Photocatalytic Oxidation of Natural Organic Matter in Water

Establishing global climate resilience to persistent organic pollutants through the private sector: a call to reform institutional standards of the International Finance Corporation

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