Negative rejection of acids and separation of ions by hyperfiltration

E. Hoffer; O. Kedem

doi:10.1016/S0011-9164(00)80211-8

Negative rejection of acids and separation of ions by hyperfiltration

E. Hoffer, O. Kedem

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

A loose charged membrane was prepared by crosslinking albumin in a collodion matrix. High water flow is obtained at relatively low pressures. Hyperfiltration of sulphuric acid and of hydrochloric acid in this membrane gives negative rejection (enrichment) in the concentration range from 10^-3N to 10^-1N; the negative rejection is higher and is observed in a wider range for sulphuric acid. Mixtures of copper sulphate and sulphuric acid and of copper chloride and hydrochloric acid were hyperfiltrated. Positive rejection of copper ions and negative rejection of hydrogen ions were obtained in these mixtures. Thus, a considerable separation was achieved.

Original language	English
Pages (from-to)	167-172
Number of pages	6
Journal	Desalination
Volume	5
Issue number	2
DOIs	https://doi.org/10.1016/S0011-9164(00)80211-8
State	Published - 1 Jan 1968
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
General Materials Science
Water Science and Technology
Mechanical Engineering

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10.1016/S0011-9164(00)80211-8

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title = "Negative rejection of acids and separation of ions by hyperfiltration",

abstract = "A loose charged membrane was prepared by crosslinking albumin in a collodion matrix. High water flow is obtained at relatively low pressures. Hyperfiltration of sulphuric acid and of hydrochloric acid in this membrane gives negative rejection (enrichment) in the concentration range from 10-3N to 10-1N; the negative rejection is higher and is observed in a wider range for sulphuric acid. Mixtures of copper sulphate and sulphuric acid and of copper chloride and hydrochloric acid were hyperfiltrated. Positive rejection of copper ions and negative rejection of hydrogen ions were obtained in these mixtures. Thus, a considerable separation was achieved.",

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AU - Hoffer, E.

AU - Kedem, O.

PY - 1968/1/1

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N2 - A loose charged membrane was prepared by crosslinking albumin in a collodion matrix. High water flow is obtained at relatively low pressures. Hyperfiltration of sulphuric acid and of hydrochloric acid in this membrane gives negative rejection (enrichment) in the concentration range from 10-3N to 10-1N; the negative rejection is higher and is observed in a wider range for sulphuric acid. Mixtures of copper sulphate and sulphuric acid and of copper chloride and hydrochloric acid were hyperfiltrated. Positive rejection of copper ions and negative rejection of hydrogen ions were obtained in these mixtures. Thus, a considerable separation was achieved.

AB - A loose charged membrane was prepared by crosslinking albumin in a collodion matrix. High water flow is obtained at relatively low pressures. Hyperfiltration of sulphuric acid and of hydrochloric acid in this membrane gives negative rejection (enrichment) in the concentration range from 10-3N to 10-1N; the negative rejection is higher and is observed in a wider range for sulphuric acid. Mixtures of copper sulphate and sulphuric acid and of copper chloride and hydrochloric acid were hyperfiltrated. Positive rejection of copper ions and negative rejection of hydrogen ions were obtained in these mixtures. Thus, a considerable separation was achieved.

UR - https://www.scopus.com/pages/publications/0008348227

U2 - 10.1016/S0011-9164(00)80211-8

DO - 10.1016/S0011-9164(00)80211-8

M3 - Article

AN - SCOPUS:0008348227

SN - 0011-9164

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SP - 167

EP - 172

JO - Desalination

JF - Desalination

IS - 2

ER -

Negative rejection of acids and separation of ions by hyperfiltration

Abstract

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