Agricultural fertiliser from brewery effluent – the recovery of nutrients from the biomass of activated sludge and high rate algal pond treatment systems

The disposal of waste biomass generated from biological wastewater treatment plants is a costly process and poses environmental threats to the receiving environment. This study aimed to determine the suitability of algae and waste activated sludge (WAS) produced from a brewery effluent treatment sys...

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Autores principales:	Richard P. Taylor, Clifford L. W. Jones, Richard K. Laubscher
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	agriculture anaerobic digestion biosolids brewery effluent high rate algal ponds waste activated sludge (was) Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/699380e2bdf84d7881a8da27856b8d34
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spelling	oai:doaj.org-article:699380e2bdf84d7881a8da27856b8d342021-11-06T07:18:06ZAgricultural fertiliser from brewery effluent – the recovery of nutrients from the biomass of activated sludge and high rate algal pond treatment systems1606-97491607-079810.2166/ws.2020.256https://doaj.org/article/699380e2bdf84d7881a8da27856b8d342021-08-01T00:00:00Zhttp://ws.iwaponline.com/content/21/5/1939https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798The disposal of waste biomass generated from biological wastewater treatment plants is a costly process and poses environmental threats to the receiving environment. This study aimed to determine the suitability of algae and waste activated sludge (WAS) produced from a brewery effluent treatment system as a fertiliser in agriculture. The change in soil characteristics and the growth of a crop fertilised with algae or WAS was compared with a conventional inorganic fertiliser. Swiss chard plants (Beta vulgaris) fertilised with anaerobically digested (AD) algae or WAS had a significantly higher mean biweekly yield (5.08 ± 0.73 kg/m2) when compared with the inorganic fertiliser control (3.45 ± 0.89 kg/m2; p < 0.0001). No difference was observed in the soil's physical fertility when algae or WAS were applied to the soil (p > 0.05). The nitrogen applied to the soil from algae and WAS biomass appeared to leach out of the soil less than the nitrogen supplied by inorganic fertilisers. The application of WAS or algae on soil increased the soil's sodium concentration and sodium absorption ratio from 774.80 ± 13.66 mg/kg to 952.17 ± 34.89 mg/kg and 2.91 ± 0.04 to 3.53 ± 0.13, respectively. Regulations on the application of algae or WAS on agricultural soils should be altered to consider the limit values for sodium. HIGHLIGHTS Swiss chard production was similar when fertilised with fertiliser, waste activated sludge or algae.; Anaerobically digested waste activated sludge and algae can replace inorganic fertiliser.; Waste activated sludge and algae increased the soil's sodium absorption ratio.; Soil application rates of sludge should consider sodium limit values.;Richard P. TaylorClifford L. W. JonesRichard K. LaubscherIWA Publishingarticleagricultureanaerobic digestionbiosolidsbrewery effluenthigh rate algal pondswaste activated sludge (was)Water supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 5, Pp 1939-1952 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	agriculture anaerobic digestion biosolids brewery effluent high rate algal ponds waste activated sludge (was) Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	agriculture anaerobic digestion biosolids brewery effluent high rate algal ponds waste activated sludge (was) Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Richard P. Taylor Clifford L. W. Jones Richard K. Laubscher Agricultural fertiliser from brewery effluent – the recovery of nutrients from the biomass of activated sludge and high rate algal pond treatment systems
description	The disposal of waste biomass generated from biological wastewater treatment plants is a costly process and poses environmental threats to the receiving environment. This study aimed to determine the suitability of algae and waste activated sludge (WAS) produced from a brewery effluent treatment system as a fertiliser in agriculture. The change in soil characteristics and the growth of a crop fertilised with algae or WAS was compared with a conventional inorganic fertiliser. Swiss chard plants (Beta vulgaris) fertilised with anaerobically digested (AD) algae or WAS had a significantly higher mean biweekly yield (5.08 ± 0.73 kg/m2) when compared with the inorganic fertiliser control (3.45 ± 0.89 kg/m2; p < 0.0001). No difference was observed in the soil's physical fertility when algae or WAS were applied to the soil (p > 0.05). The nitrogen applied to the soil from algae and WAS biomass appeared to leach out of the soil less than the nitrogen supplied by inorganic fertilisers. The application of WAS or algae on soil increased the soil's sodium concentration and sodium absorption ratio from 774.80 ± 13.66 mg/kg to 952.17 ± 34.89 mg/kg and 2.91 ± 0.04 to 3.53 ± 0.13, respectively. Regulations on the application of algae or WAS on agricultural soils should be altered to consider the limit values for sodium. HIGHLIGHTS Swiss chard production was similar when fertilised with fertiliser, waste activated sludge or algae.; Anaerobically digested waste activated sludge and algae can replace inorganic fertiliser.; Waste activated sludge and algae increased the soil's sodium absorption ratio.; Soil application rates of sludge should consider sodium limit values.;
format	article
author	Richard P. Taylor Clifford L. W. Jones Richard K. Laubscher
author_facet	Richard P. Taylor Clifford L. W. Jones Richard K. Laubscher
author_sort	Richard P. Taylor
title	Agricultural fertiliser from brewery effluent – the recovery of nutrients from the biomass of activated sludge and high rate algal pond treatment systems
title_short	Agricultural fertiliser from brewery effluent – the recovery of nutrients from the biomass of activated sludge and high rate algal pond treatment systems
title_full	Agricultural fertiliser from brewery effluent – the recovery of nutrients from the biomass of activated sludge and high rate algal pond treatment systems
title_fullStr	Agricultural fertiliser from brewery effluent – the recovery of nutrients from the biomass of activated sludge and high rate algal pond treatment systems
title_full_unstemmed	Agricultural fertiliser from brewery effluent – the recovery of nutrients from the biomass of activated sludge and high rate algal pond treatment systems
title_sort	agricultural fertiliser from brewery effluent – the recovery of nutrients from the biomass of activated sludge and high rate algal pond treatment systems
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/699380e2bdf84d7881a8da27856b8d34
work_keys_str_mv	AT richardptaylor agriculturalfertiliserfrombreweryeffluenttherecoveryofnutrientsfromthebiomassofactivatedsludgeandhighratealgalpondtreatmentsystems AT cliffordlwjones agriculturalfertiliserfrombreweryeffluenttherecoveryofnutrientsfromthebiomassofactivatedsludgeandhighratealgalpondtreatmentsystems AT richardklaubscher agriculturalfertiliserfrombreweryeffluenttherecoveryofnutrientsfromthebiomassofactivatedsludgeandhighratealgalpondtreatmentsystems
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Agricultural fertiliser from brewery effluent – the recovery of nutrients from the biomass of activated sludge and high rate algal pond treatment systems

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