Evaluation of advanced phosphorus removal from slaughterhouse wastewater using industrial waste-based adsorbents

Slaughterhouse wastewater (SWW) contains high concentrations of phosphorus (P) and is considered as a principal industrial contaminant that causes eutrophication. This study developed two kinds of economical P removal adsorbents using flue gas desulfurization gypsum (FGDG) as the main raw material a...

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Autores principales: Shengdan Sun, Chuanping Feng, Shuang Tong, Yan Zhao, Nan Chen, Ming Zhu
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Publicado: IWA Publishing 2021
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spelling oai:doaj.org-article:68f778615de84b86b5b981255bea2f7c2021-11-06T10:52:37ZEvaluation of advanced phosphorus removal from slaughterhouse wastewater using industrial waste-based adsorbents0273-12231996-973210.2166/wst.2021.069https://doaj.org/article/68f778615de84b86b5b981255bea2f7c2021-03-01T00:00:00Zhttp://wst.iwaponline.com/content/83/6/1407https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Slaughterhouse wastewater (SWW) contains high concentrations of phosphorus (P) and is considered as a principal industrial contaminant that causes eutrophication. This study developed two kinds of economical P removal adsorbents using flue gas desulfurization gypsum (FGDG) as the main raw material and bentonite, clay, steel slag and fly ash as the additives. The maximum adsorption capacity of the adsorbent composed of 60% FGDG, 20% steel slag, and 20% fly ash (DSGA2) was found to be 15.85 mg P/g, which was 19 times that of the adsorbent synthesized using 60% FGDG, 30% bentonite, and 10% clay (DSGA1) (0.82 mg P/g). Surface adsorption, internal diffusion, and ionic dissolution co-existed in the P removal process. The adsorption capacity of DSGA2 (2.50 mg P/g) was also evaluated in column experiments. The removal efficiency was determined to be higher than 92% in the first 5 days, while the corresponding effluent concentration was lower than the Chinese upcoming SWW discharge limit of 2 mg P/L. Compared with DSGA1, DSGA2 (synthesized from various industrial wastes) showed obvious advantages in improving adsorption capacity of P. The results showed that DSGA2 is a promising adsorbent for the advanced removal of P from SWW in practical applications. HIGHLIGHTS We developed an efficient granular adsorbent based on industrial waste.; P removal from slaughterhouse wastewater was achieved with reused industrial waste.; Actual treated slaughterhouse wastewater was used in continuous flow experiments.; Surface adsorption, internal diffusion and ionic dissolution played a role in the P removal process.;Shengdan SunChuanping FengShuang TongYan ZhaoNan ChenMing ZhuIWA Publishingarticleadsorptionchemical precipitationindustrial wastesphosphorus removalslaughterhouse wastewaterEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 6, Pp 1407-1417 (2021)
institution DOAJ
collection DOAJ
language EN
topic adsorption
chemical precipitation
industrial wastes
phosphorus removal
slaughterhouse wastewater
Environmental technology. Sanitary engineering
TD1-1066
spellingShingle adsorption
chemical precipitation
industrial wastes
phosphorus removal
slaughterhouse wastewater
Environmental technology. Sanitary engineering
TD1-1066
Shengdan Sun
Chuanping Feng
Shuang Tong
Yan Zhao
Nan Chen
Ming Zhu
Evaluation of advanced phosphorus removal from slaughterhouse wastewater using industrial waste-based adsorbents
description Slaughterhouse wastewater (SWW) contains high concentrations of phosphorus (P) and is considered as a principal industrial contaminant that causes eutrophication. This study developed two kinds of economical P removal adsorbents using flue gas desulfurization gypsum (FGDG) as the main raw material and bentonite, clay, steel slag and fly ash as the additives. The maximum adsorption capacity of the adsorbent composed of 60% FGDG, 20% steel slag, and 20% fly ash (DSGA2) was found to be 15.85 mg P/g, which was 19 times that of the adsorbent synthesized using 60% FGDG, 30% bentonite, and 10% clay (DSGA1) (0.82 mg P/g). Surface adsorption, internal diffusion, and ionic dissolution co-existed in the P removal process. The adsorption capacity of DSGA2 (2.50 mg P/g) was also evaluated in column experiments. The removal efficiency was determined to be higher than 92% in the first 5 days, while the corresponding effluent concentration was lower than the Chinese upcoming SWW discharge limit of 2 mg P/L. Compared with DSGA1, DSGA2 (synthesized from various industrial wastes) showed obvious advantages in improving adsorption capacity of P. The results showed that DSGA2 is a promising adsorbent for the advanced removal of P from SWW in practical applications. HIGHLIGHTS We developed an efficient granular adsorbent based on industrial waste.; P removal from slaughterhouse wastewater was achieved with reused industrial waste.; Actual treated slaughterhouse wastewater was used in continuous flow experiments.; Surface adsorption, internal diffusion and ionic dissolution played a role in the P removal process.;
format article
author Shengdan Sun
Chuanping Feng
Shuang Tong
Yan Zhao
Nan Chen
Ming Zhu
author_facet Shengdan Sun
Chuanping Feng
Shuang Tong
Yan Zhao
Nan Chen
Ming Zhu
author_sort Shengdan Sun
title Evaluation of advanced phosphorus removal from slaughterhouse wastewater using industrial waste-based adsorbents
title_short Evaluation of advanced phosphorus removal from slaughterhouse wastewater using industrial waste-based adsorbents
title_full Evaluation of advanced phosphorus removal from slaughterhouse wastewater using industrial waste-based adsorbents
title_fullStr Evaluation of advanced phosphorus removal from slaughterhouse wastewater using industrial waste-based adsorbents
title_full_unstemmed Evaluation of advanced phosphorus removal from slaughterhouse wastewater using industrial waste-based adsorbents
title_sort evaluation of advanced phosphorus removal from slaughterhouse wastewater using industrial waste-based adsorbents
publisher IWA Publishing
publishDate 2021
url https://doaj.org/article/68f778615de84b86b5b981255bea2f7c
work_keys_str_mv AT shengdansun evaluationofadvancedphosphorusremovalfromslaughterhousewastewaterusingindustrialwastebasedadsorbents
AT chuanpingfeng evaluationofadvancedphosphorusremovalfromslaughterhousewastewaterusingindustrialwastebasedadsorbents
AT shuangtong evaluationofadvancedphosphorusremovalfromslaughterhousewastewaterusingindustrialwastebasedadsorbents
AT yanzhao evaluationofadvancedphosphorusremovalfromslaughterhousewastewaterusingindustrialwastebasedadsorbents
AT nanchen evaluationofadvancedphosphorusremovalfromslaughterhousewastewaterusingindustrialwastebasedadsorbents
AT mingzhu evaluationofadvancedphosphorusremovalfromslaughterhousewastewaterusingindustrialwastebasedadsorbents
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