A novel separation method of the valuable components for activated clay production wastewater

The acidic wastewater produced by the wet production of activated clay contains valuable components such as iron and aluminum. The precipitation method was successfully introduced to separate iron and aluminum from the activated clay production wastewater step by step, which can not only recover the...

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Autores principales:	Zhou Lvshan, Peng Tongjiang, Sun Hongjuan, Fu Dong, Lai Chuan
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	wastewater precipitation mechanism activated clay Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/f574bffebf184acdb1aae772e8fd1ec4
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spelling	oai:doaj.org-article:f574bffebf184acdb1aae772e8fd1ec42021-12-05T14:10:44ZA novel separation method of the valuable components for activated clay production wastewater2391-542010.1515/chem-2021-0052https://doaj.org/article/f574bffebf184acdb1aae772e8fd1ec42021-05-01T00:00:00Zhttps://doi.org/10.1515/chem-2021-0052https://doaj.org/toc/2391-5420The acidic wastewater produced by the wet production of activated clay contains valuable components such as iron and aluminum. The precipitation method was successfully introduced to separate iron and aluminum from the activated clay production wastewater step by step, which can not only recover the valuable components, but also avoid environmental pollution. In the separation process, gypsum, iron aluminum phosphate, alumina, and sodium sulfate were prepared, and the phase compositions of separation products were analyzed by XRD and IR. The main influencing factors in the separation of iron and aluminum components were studied by single factor experiment. The results show that at the optimized conditions, phosphorus/iron molar ratio 6.0, the system pH 3.0, the reaction temperature 343 K, and the reaction time 90 min, the iron(iii) ion in the system can form a sodium-containing aluminum iron phosphate double salt, and the filtrate after separating Fe3+ and part of Al3+ can meet the requirements for forming high-purity Al2O3. During the phosphate precipitation process, the hypothesis should be correct that Al3+ reacts with PO43−{\text{PO}}_{4}^{3-} to form an AlPO4 skeleton, Fe3+ isomorphically replaces Al3+ in the [AlO4] tetrahedron, and adsorption occurs simultaneously, with Na+ occupying the terminal acid sites, P(Al)–OH.Zhou LvshanPeng TongjiangSun HongjuanFu DongLai ChuanDe Gruyterarticlewastewaterprecipitationmechanismactivated clayChemistryQD1-999ENOpen Chemistry, Vol 19, Iss 1, Pp 530-540 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	wastewater precipitation mechanism activated clay Chemistry QD1-999
spellingShingle	wastewater precipitation mechanism activated clay Chemistry QD1-999 Zhou Lvshan Peng Tongjiang Sun Hongjuan Fu Dong Lai Chuan A novel separation method of the valuable components for activated clay production wastewater
description	The acidic wastewater produced by the wet production of activated clay contains valuable components such as iron and aluminum. The precipitation method was successfully introduced to separate iron and aluminum from the activated clay production wastewater step by step, which can not only recover the valuable components, but also avoid environmental pollution. In the separation process, gypsum, iron aluminum phosphate, alumina, and sodium sulfate were prepared, and the phase compositions of separation products were analyzed by XRD and IR. The main influencing factors in the separation of iron and aluminum components were studied by single factor experiment. The results show that at the optimized conditions, phosphorus/iron molar ratio 6.0, the system pH 3.0, the reaction temperature 343 K, and the reaction time 90 min, the iron(iii) ion in the system can form a sodium-containing aluminum iron phosphate double salt, and the filtrate after separating Fe3+ and part of Al3+ can meet the requirements for forming high-purity Al2O3. During the phosphate precipitation process, the hypothesis should be correct that Al3+ reacts with PO43−{\text{PO}}_{4}^{3-} to form an AlPO4 skeleton, Fe3+ isomorphically replaces Al3+ in the [AlO4] tetrahedron, and adsorption occurs simultaneously, with Na+ occupying the terminal acid sites, P(Al)–OH.
format	article
author	Zhou Lvshan Peng Tongjiang Sun Hongjuan Fu Dong Lai Chuan
author_facet	Zhou Lvshan Peng Tongjiang Sun Hongjuan Fu Dong Lai Chuan
author_sort	Zhou Lvshan
title	A novel separation method of the valuable components for activated clay production wastewater
title_short	A novel separation method of the valuable components for activated clay production wastewater
title_full	A novel separation method of the valuable components for activated clay production wastewater
title_fullStr	A novel separation method of the valuable components for activated clay production wastewater
title_full_unstemmed	A novel separation method of the valuable components for activated clay production wastewater
title_sort	novel separation method of the valuable components for activated clay production wastewater
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/f574bffebf184acdb1aae772e8fd1ec4
work_keys_str_mv	AT zhoulvshan anovelseparationmethodofthevaluablecomponentsforactivatedclayproductionwastewater AT pengtongjiang anovelseparationmethodofthevaluablecomponentsforactivatedclayproductionwastewater AT sunhongjuan anovelseparationmethodofthevaluablecomponentsforactivatedclayproductionwastewater AT fudong anovelseparationmethodofthevaluablecomponentsforactivatedclayproductionwastewater AT laichuan anovelseparationmethodofthevaluablecomponentsforactivatedclayproductionwastewater AT zhoulvshan novelseparationmethodofthevaluablecomponentsforactivatedclayproductionwastewater AT pengtongjiang novelseparationmethodofthevaluablecomponentsforactivatedclayproductionwastewater AT sunhongjuan novelseparationmethodofthevaluablecomponentsforactivatedclayproductionwastewater AT fudong novelseparationmethodofthevaluablecomponentsforactivatedclayproductionwastewater AT laichuan novelseparationmethodofthevaluablecomponentsforactivatedclayproductionwastewater
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A novel separation method of the valuable components for activated clay production wastewater

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